Heat storage composition

Abstract

This heat storage composition contains a compound L and a polymer 1. The enthalpy of fusion of the heat storage composition is 30 J / g or greater in a range of 10-60℃, the ΔHSP of the polymer 1 and the compound L is 3.5 or less, the enthalpy of fusion of the compound L is 30 J / g or greater in a range of 0-100℃, and (b1) the molecular weight of the compound L is 290-2,000 g / mol and / or (b2) the kinetic activation energy of the compound L is 20 kJ / mol or greater.

Description

heat storage composition

[0001] The present invention relates to a heat storage composition.

[0002] With the recent increase in the demand for comfort, various textile products and building materials using thermal functional materials have been developed.

[0003] As a thermal functional material, a polymer phase transition material (polymer heat storage material) is described in Patent Document 1. Low molecular weight heat storage materials such as paraffin have also been known.

[0004] Special table number 2013-525518

[0005] An object of the present application is to provide a novel heat storage composition in which the low-molecular-weight heat storage material is less likely to bleed (ooze out to the surface).

[0006] The present invention relates to, but is not limited to, the following. [Invention 1] A heat storage composition comprising compound L and polymer 1, wherein the heat storage composition has a melting enthalpy of 30 J / g or more in the range of 10 to 60°C, the ΔHSP of polymer 1 and compound L is 3.5 or less, the melting enthalpy of compound L in the range of 0 to 100°C is 30 J / g or more, (b1) the molecular weight of compound L is 290 to 2000 g / mol, and / or (b2) the kinetic activation energy of compound L is 20 kJ / mol or more. [Invention 2] The heat storage composition according to invention 1, which satisfies requirement (b2). [Invention 3] The heat storage composition according to invention 1, which satisfies requirement (b1). [Invention 4] The heat storage composition according to invention 1, which satisfies both requirements (b1) and (b2). [Invention 5] The heat storage composition according to invention 1, wherein compound L is C １４～３０ The heat storage composition according to any one of Inventions 1 to 4. [Invention 6] The compound L has an alkyl group represented by C １４～３０The heat storage composition according to any one of Inventions 1 to 5, wherein compound L has a linear alkyl group represented by the formula (1). [Invention 7] The heat storage composition according to any one of Inventions 1 to 6, wherein compound L is a saturated fatty acid ester, a saturated ether, or a saturated hydrocarbon. [Invention 8] The heat storage composition according to any one of Inventions 1 to 7, wherein compound L is a saturated fatty acid ester or a saturated ether. [Invention 9] The heat storage composition according to any one of Inventions 1 to 8, wherein polymer 1 has a melting enthalpy of 30 J / g or more in the range of 10 to 60°C. [Invention 10] The heat storage composition according to any one of Inventions 1 to 9, wherein polymer 1 is a polymer having a structural unit B represented by formula (1): In formula (1), R １ represents a hydrogen atom or a methyl group; １１ represents a single bond, —CO—O—, —O—CO—, or —O—; L １２ is a single bond, -CH ２ -, -CH ２ -CH ２ -, -CH ２ -CH ２ -CH ２ -, -CH ２ -CH(OH)-CH ２ - or -CH ２ -CH(CH ２ OH)—, L １３ is a single bond, -CO-O-, -O-CO-, -O-, -CO-NH-, -NH-CO-, -CO-NH-CO-, -NH-CO-NH-, -NH-, or -N(CH ３ )-, L １６ is C １４～３０ represents an alkyl group represented by the formula: １１ , L １２ , and L １３ In each of the horizontally written chemical formulas, the left side corresponds to the upper side of formula (1) (the main chain side of the polymer), and the right side corresponds to the lower side of formula (1) (the terminal side of the side chain of the polymer). [Invention 11] The heat storage composition according to Invention 10, wherein polymer 1 has a structural unit A derived from ethylene. [Invention 12] The heat storage composition according to Invention 10 or 11, having at least one structural unit C selected from the group consisting of a structural unit represented by formula (2) and a structural unit represented by the following formula (3): In formula (2), R ２ represents a hydrogen atom or a methyl group; ２１ represents a single bond, —CO—O—, —O—CO—, or —O—; L ２４ is C １～８ represents an alkylene group represented by the formula: ２５ represents a hydrogen atom, an epoxy group, -CH(OH)-CH ２ OH, a carboxy group, a hydroxy group, an amino group, or C １～４ represents an alkylamino group represented by the formula: １ In each of the horizontally written chemical formulas in the explanation of the chemical structure, the left side corresponds to the upper side of formula (2) (the main chain side of the polymer), and the right side corresponds to the lower side of formula (2) (the terminal side of the side chain of the polymer). [Invention 13] A heat storage composition according to any one of Inventions 10 to 13, wherein the total number of structural units A and structural units B (and, if present, structural unit C) is 90% or more, relative to 100% as the total number of all structural units contained in polymer 1. [Invention 14] A heat storage composition according to any one of Inventions 1 to 13, wherein the phase structure of the polymer component satisfies any one of the following requirements: (d1) does not have an islands-in-a-sea structure; (d2) has an islands-in-a-sea structure in which the volume-average circular equivalent particle diameter of the islands (dispersed phase) is 1.5 μm or less; or (d3) has an islands-in-a-sea structure in which the area ratio of the islands (dispersed phase) is 15% or less. [Invention 15] A heat storage composition according to any one of Inventions 1 to 14, wherein polymer 1 is crosslinked.

[0007] In the heat storage composition of the present invention, the low molecular weight heat storage material is less likely to bleed.

[0008] DEFINITIONS All numbers disclosed herein are approximations, whether or not the word "about" or "approximately" is used in conjunction with them. They may vary by 1 percent, 2 percent, 5 percent, or sometimes 10-20 percent. Lower Limit R Ｌ and upper limit R Ｕ Whenever a range of values ​​with R = R is disclosed, any number falling within the range is specifically disclosed. Specifically, the following numbers within the range are specifically disclosed: R = R Ｌ +k ＊ (R Ｕ -R Ｌ) where k is a variable ranging from 1 percent to 100 percent in 1 percent increments, i.e., k is 1 percent, 2 percent, 3 percent, 4 percent, 5 percent, ..., 50 percent, 51 percent, 52 percent, ..., 95 percent, 96 percent, 97 percent, 98 percent, 99 percent, or 100 percent. Additionally, any numerical range defined by the number of two R's as set forth above is also specifically disclosed.

[0009] The expression "lower limit to upper limit" expressing a numerical range means "greater than or equal to the lower limit, and less than or equal to the upper limit," and the expression "upper limit to lower limit" means "less than or equal to the upper limit, greater than or equal to the lower limit." In other words, these expressions express a numerical range including the lower limit and the upper limit, but in one aspect, one or both of the upper limit and the lower limit may be excluded, that is, "lower limit to upper limit" may express "more than the lower limit and less than the upper limit," "greater than or equal to the lower limit and less than the upper limit," or "more than the lower limit and less than the upper limit." Similarly, "xx or more" may express "more than xx," and "xx or less" may express "less than xx."

[0010] Hereinafter, several embodiments of the present invention will be described in detail, but the present invention is not limited to the following embodiments.

[0011] The heat storage composition of the present invention (hereinafter, sometimes referred to as "heat storage composition E") contains the below-described compound L and the below-described polymer 1. Details will be described later.

[0012] Compound L The melting enthalpy (ΔHm) of Compound L in the range of 0 to 100°C is 30 J / g or more, preferably 100 J / g or more, more preferably 130 J / g or more, and even more preferably 200 J / g or more. In one embodiment, the ΔHm of Compound L in the range of 10 to 60°C is 30 J / g or more, preferably 100 J / g or more, more preferably 130 J / g or more, and even more preferably 200 J / g or more. The ΔHm is measured according to the method described in the Examples.

[0013] Compound L satisfies at least one of the following requirements (b1) and (b2), and preferably satisfies both of them.

[0014] (b1) The molecular weight of compound L is 290 to 2000 g / mol. Compound L may be a compound containing one or more structural units (repeating units) in the molecule, as long as the molecular weight is 2000 or less. The molecular weight of compound L is preferably 290 to 1000, more preferably 290 to 600. Compound L may be a "polymer" such as a dimer.

[0015] (b2) The activation energy of the movement of the compound L is 20 kJ / mol or more.

[0016] In one embodiment, the ease of movement of compound L when bleeding occurs is related to the activation energy of movement in the molten state. The activation energy of movement in the molten state can be measured at a temperature 10°C or more higher than the melting point of compound L. For example, when the melting point of compound L is 58°C, the longitudinal relaxation time T1 can be measured at each of temperatures indicating a molten state, 70°C, 80°C, 90°C, and 100°C, and the obtained T1 can be plotted as an Arrhenius plot to measure the activation energy of movement of compound L in the molten state.

[0017] The activation energy of the kinetics of compound L in a molten state reflects the ease of movement of compound L in the heat storage composition. A larger value indicates less bleeding. When compound L satisfies requirement (b2), it is preferable that the activation energy of the kinetics of compound L is 21 kJ / mol or more. The activation energy of the kinetics is measured according to the method described in the examples.

[0018] The larger the activation energy of the movement of compound L, the less likely compound L is to move. However, if the value is too large, it may be difficult to obtain a uniform composition during kneading. Therefore, the activation energy of compound L is preferably 30 kJ / mol or less, more preferably 28 kJ / mol or less, and even more preferably 26 kJ / mol or less.

[0019] The activation energy of motion reflects the rotational and translational motion of molecules. The activation energy can be increased by using large or branched molecules that are prone to entanglement, which inhibits translational motion. The activation energy can also be controlled by using polar structures, such as hydroxyl groups or ester groups, that facilitate hydrogen bonding.

[0020] In one embodiment, compound L has a melting peak temperature (highest crystalline transition temperature) in the range of 0 to 100°C, and the melting peak temperature is preferably in the range of 10 to 80°C, more preferably 10 to 60°C.

[0021] Examples of compound L include organic low-molecular-weight substances. Examples of organic low-molecular-weight substances include paraffin, long-chain fatty acids, long-chain alcohols, long-chain fatty acid esters, and sugar alcohols. These may be encapsulated in organic microcapsules, fixed with a gelling agent, or encapsulated in a container such as a plastic.

[0022] The compound L is preferably C １４～３０ (having 14 to 30 carbon atoms) alkyl group. １４～３０ The alkyl group of １４～３０ and C １４～３０ Preferably, the branched alkyl group is １４～３０ and more preferably a straight chain alkyl group of C １４～２４ and more preferably C １６～２２ is a straight chain alkyl group.

[0023] Said C １４～３０ Examples of the straight-chain alkyl group include an n-tetradecyl group, an n-pentadecyl group, an n-hexadecyl group, an n-heptadecyl group, an n-octadecyl group, an n-nonadecyl group, an n-eicosyl group, an n-heneicosyl group, an n-docosyl group, an n-tricosyl group, an n-tetracosyl group, an n-pentacosyl group, an n-hexacosyl group, an n-heptacosyl group, an n-octacosyl group, an n-nonacosyl group, and an n-triacontyl group.

[0024] Said C １４～３０ Examples of the branched alkyl group include an isotetradecyl group, an isopentadecyl group, an isohexadecyl group, an isoheptadecyl group, an isooctadecyl group, an isononadecyl group, an isoeicosyl group, an isoheneicosyl group, an isodocosyl group, an isotricosyl group, an isotetracosyl group, an isopentacosyl group, an isohexacosyl group, an isoheptacosyl group, an isooctacosyl group, an isononacosyl group, and an isotriacontyl group.

[0025] Compound L may be at least one heat storage material selected from the group consisting of hydrocarbons, fatty acids, fatty acid salts, fatty acid esters, aliphatic ethers, aliphatic ketones, aliphatic alcohols, and aliphatic amides. Furthermore, compound L may be a mixture of two or more compounds (which may be the same or different) selected from the above compounds.

[0026] The hydrocarbon is preferably a linear saturated hydrocarbon, a linear unsaturated hydrocarbon, a branched saturated hydrocarbon, or a branched unsaturated hydrocarbon, and is particularly preferably a linear saturated hydrocarbon. Examples of linear saturated hydrocarbons include n-tetradecane, n-pentadecane, n-hexadecane, n-heptadecane, n-octadecane, n-nonadecane, n-eicosane, n-henicosane, n-docosane, n-tricosane, n-tetracosane, n-pentacosane, n-hexacosane, n-peptacosane, n-octacosane, n-nonacosane, and n-triacontane. Hydrocarbons also include various paraffin compounds.

[0027] The fatty acid is preferably a linear saturated fatty acid, a linear unsaturated fatty acid, a branched saturated fatty acid, or a branched unsaturated fatty acid, and particularly preferably a linear saturated fatty acid. Examples of linear saturated fatty acids include n-tetradecanoic acid, n-hexadecanoic acid, n-octadecanoic acid, n-eicosanoic acid, n-henicosanoic acid, n-docosanoic acid, n-tricosanoic acid, n-tetracosanoic acid, n-pentacosanoic acid, n-hexacosanoic acid, n-heptacosanoic acid, n-octacosanoic acid, n-nonacosanoic acid, and n-triacontanoic acid.

[0028] Examples of the fatty acid salts include sodium salts, potassium salts, and ammonium salts of the fatty acids.

[0029] The fatty acid ester is preferably a linear saturated fatty acid ester, a linear unsaturated fatty acid ester, a branched saturated fatty acid ester, or a branched unsaturated fatty acid ester, and particularly preferably a linear saturated fatty acid ester. Examples of linear saturated fatty acid esters include the following: tetradecyl n-methanoate, hexadecyl n-methanoate, octadecyl n-methanoate, eicosyl n-methanoate, docosyl n-methanoate, tetracosyl n-methanoate, hexacosyl n-methanoate, octacosyl n-methanoate, triacontyl n-methanoate; tetradecyl n-ethanoate, hexadecyl n-ethanoate, octadecyl n-ethanoate, eicosyl n-ethanoate, docosyl n-ethanoate, tetracosyl n-ethanoate, hexacosyl n-ethanoate, octacosyl n-ethanoate, triacontyl n-ethanoate; Tetradecyl n-propanoate, hexadecyl n-propanoate, octadecyl n-propanoate, eicosyl n-propanoate, docosyl n-propanoate, tetracosyl n-propanoate, hexacosyl n-propanoate, octacosyl n-propanoate, triacontyl n-propanoate; tetradecyl n-butanoate, hexadecyl n-butanoate, octadecyl n-butanoate, eicosyl n-butanoate, docosyl n-butanoate, tetracosyl n-butanoate, hexacosyl n-butanoate, octacosyl n-butanoate, triacontyl n-butanoate; Tetradecyl n-pentanoate, hexadecyl n-pentanoate, octadecyl n-pentanoate, eicosyl n-pentanoate, docosyl n-pentanoate, tetracosyl n-pentanoate, hexacosyl n-pentanoate, octacosyl n-pentanoate, triacontyl n-pentanoate; Tetradecyl n-hexanoate, hexadecyl n-hexanoate, octadecyl n-hexanoate, eicosyl n-hexanoate, docosyl n-hexanoate, tetracosyl n-hexanoate, hexacosyl n-hexanoate, octacosyl n-hexanoate, triacontyl n-hexanoate; Tetradecyl n-heptanoate, hexadecyl n-heptanoate, octadecyl n-heptanoate, eicosyl n-heptanoate, docosyl n-heptanoate, tetracosyl n-heptanoate, hexacosyl n-heptanoate, octacosyl n-heptanoate, triacontyl n-heptanoate;Tetradecyl n-octanoate, hexadecyl n-octanoate, octadecyl n-octanoate, eicosyl n-octanoate, docosyl n-octanoate, tetracosyl n-octanoate, hexacosyl n-octanoate, octacosyl n-octanoate, triacontyl n-octanoate; tetradecyl n-nonanoate, hexadecyl n-nonanoate, octadecyl n-nonanoate, eicosyl n-nonanoate, docosyl n-nonanoate, tetracosyl n-nonanoate, hexacosyl n-nonanoate, octacosyl n-nonanoate, triacontyl n-nonanoate; Tetradecyl n-decanoate, hexadecyl n-decanoate, octadecyl n-decanoate, eicosyl n-decanoate, docosyl n-decanoate, tetracosyl n-decanoate, hexacosyl n-decanoate, octacosyl n-decanoate, triacontyl n-decanoate; tetradecyl n-dodecanoate, hexadecyl n-dodecanoate, octadecyl n-dodecanoate, eicosyl n-dodecanoate, docosyl n-dodecanoate, tetracosyl n-dodecanoate, hexacosyl n-dodecanoate, octacosyl n-dodecanoate, triacontyl n-dodecanoate; Methyl n-tetradecanoate, ethyl n-tetradecanoate, propyl n-tetradecanoate, butyl n-tetradecanoate, pentyl n-tetradecanoate, hexyl n-tetradecanoate, heptyl n-tetradecanoate, octyl n-tetradecanoate, nonyl n-tetradecanoate, decyl n-tetradecanoate, dodecyl n-tetradecanoate, tetradecyl n-hexadecanoate, hexadecyl n-tetradecanoate, octadecyl n-tetradecanoate, eicosyl n-tetradecanoate, docosyl n-tetradecanoate, tetracosyl n-tetradecanoate, hexacosyl n-tetradecanoate, octacosyl n-tetradecanoate, triacontyl n-tetradecanoate;Methyl n-hexadecanoate, ethyl n-hexadecanoate, propyl n-hexadecanoate, butyl n-hexadecanoate, pentyl n-hexadecanoate, hexyl n-hexadecanoate, heptyl n-hexadecanoate, octyl n-hexadecanoate, nonyl n-hexadecanoate, decyl n-hexadecanoate, dodecyl n-hexadecanoate, tetradecyl n-hexadecanoate, hexadecyl n-hexadecanoate, octadecyl n-hexadecanoate, eicosyl n-hexadecanoate, docosyl n-hexadecanoate, tetracosyl n-hexadecanoate, hexacosyl n-hexadecanoate, octacosyl n-hexadecanoate, triacontyl n-hexadecanoate; Methyl n-octadecanoate, ethyl n-octadecanoate, propyl n-octadecanoate, butyl n-octadecanoate, pentyl n-octadecanoate, hexyl n-octadecanoate, heptyl n-octadecanoate, octyl n-octadecanoate, nonyl n-octadecanoate, decyl n-octadecanoate, dodecyl n-octadecanoate, tetradecyl n-octadecanoate, hexadecyl n-octadecanoate, octadecyl n-octadecanoate, eicosyl n-octadecanoate, docosyl n-octadecanoate, tetracosyl n-octadecanoate, hexacosyl n-octadecanoate, octacosyl n-octadecanoate, triacontyl n-octadecanoate; Methyl n-eicosanoate, ethyl n-eicosanoate, propyl n-eicosanoate, butyl n-eicosanoate, pentyl n-eicosanoate, hexyl n-eicosanoate, heptyl n-eicosanoate, octyl n-eicosanoate, nonyl n-eicosanoate, decyl n-eicosanoate, dodecyl n-eicosanoate, tetradecyl n-eicosanoate, hexadecyl n-eicosanoate, octadecyl n-eicosanoate, eicosyl n-eicosanoate, docosyl n-eicosanoate, tetracosyl n-eicosanoate, hexacosyl n-eicosanoate, octacosyl n-eicosanoate, triacontyl n-eicosanoate;Methyl n-docosanoate, ethyl n-docosanoate, propyl n-docosanoate, butyl n-docosanoate, pentyl n-docosanoate, hexyl n-docosanoate, heptyl n-docosanoate, octyl n-docosanoate, nonyl n-docosanoate, decyl n-docosanoate, dodecyl n-docosanoate, tetradecyl n-docosanoate, hexadecyl n-docosanoate, octadecyl n-docosanoate, eicosyl n-docosanoate, docosyl n-docosanoate, tetracosyl n-docosanoate, hexacosyl n-docosanoate, octacosyl n-docosanoate, triacontyl n-docosanoate; Methyl n-tetracosanoate, ethyl n-tetracosanoate, propyl n-tetracosanoate, butyl n-tetracosanoate, pentyl n-tetracosanoate, hexyl n-tetracosanoate, heptyl n-tetracosanoate, octyl n-tetracosanoate, nonyl n-tetracosanoate, decyl n-tetracosanoate, dodecyl n-tetracosanoate, tetradecyl n-tetracosanoate, hexadecyl n-tetracosanoate, octadecyl n-tetracosanoate, eicosyl n-tetracosanoate, docosyl n-tetracosanoate, tetracosyl n-tetracosanoate, hexacosyl n-tetracosanoate, octacosyl n-tetracosanoate, triacontyl n-tetracosanoate; Methyl n-hexacosanoate, ethyl n-hexacosanoate, propyl n-hexacosanoate, butyl n-hexacosanoate, pentyl n-hexacosanoate, hexyl n-hexacosanoate, heptyl n-hexacosanoate, octyl n-hexacosanoate, nonyl n-hexacosanoate, decyl n-hexacosanoate, dodecyl n-hexacosanoate, tetradecyl n-hexacosanoate, hexadecyl n-hexacosanoate, octadecyl n-hexacosanoate, eicosyl n-hexacosanoate, docosyl n-hexacosanoate, tetracosyl n-hexacosanoate, hexacosyl n-hexacosanoate, octacosyl n-hexacosanoate, triacontyl n-hexacosanoate;Methyl n-octacosanoate, ethyl n-octacosanoate, propyl n-octacosanoate, butyl n-octacosanoate, pentyl n-octacosanoate, hexyl n-octacosanoate, heptyl n-octacosanoate, octyl n-octacosanoate, nonyl n-octacosanoate, decyl n-octacosanoate, dodecyl n-octacosanoate, tetradecyl n-octacosanoate, hexadecyl n-octacosanoate, octadecyl n-octacosanoate, eicosyl n-octacosanoate, docosyl n-octacosanoate, tetracosyl n-octacosanoate, hexacosyl n-octacosanoate, octacosyl n-octacosanoate, triacontyl n-octacosanoate; Methyl n-triacontanoate, ethyl n-triacontanoate, propyl n-triacontanoate, butyl n-triacontanoate, pentyl n-triacontanoate, hexyl n-triacontanoate, heptyl n-triacontanoate, octyl n-triacontanoate, nonyl n-triacontanoate, decyl n-triacontanoate, dodecyl n-triacontanoate, tetradecyl n-triacontanoate, hexadecyl n-triacontanoate, octadecyl n-triacontanoate, eicosyl n-triacontanoate, docosyl n-triacontanoate, tetracosyl n-triacontanoate, hexacosyl n-triacontanoate, octacosyl n-triacontanoate, triacontyl n-triacontanoate;

[0030] Furthermore, compounds in which multiple fatty acid esters are bonded, such as triacylglycerol, may also be used.

[0031] The aliphatic ether is preferably a linear saturated aliphatic ether, a linear unsaturated aliphatic ether, a branched saturated aliphatic ether or a branched unsaturated aliphatic ether, and particularly preferably a linear saturated aliphatic ether. Examples of linear saturated aliphatic ethers include n-tetradecyl methyl ether, n-tetradecyl ethyl ether, n-tetradecyl propyl ether, n-tetradecyl butyl ether, n-tetradecyl pentyl ether, n-tetradecyl hexyl ether, n-tetradecyl heptyl ether, n-tetradecyl octyl ether, n-tetradecyl nonyl ether, n-tetradecyl decyl ether, n-tetradecyl dodecyl ether, n-ditetradecyl ether, n-tetradecyl hexadecyl ether, n-tetradecyl octadecyl ether, n-tetradecyl eicosyl ether, n-tetradecyl docosyl ether, n-tetradecyl tetracosyl ether, n-tetradecyl hexacosyl ether, n-tetradecyl octacosyl ether, and n-tetradecyl triacontyl ether;n-Hexadecyl methyl ether, n-hexadecyl ethyl ether, n-hexadecyl propyl ether, n-hexadecyl butyl ether, n-hexadecyl pentyl ether, n-hexadecyl hexyl ether, n-hexadecyl heptyl ether, n-hexadecyl octyl ether, n-hexadecyl nonyl ether, n-hexadecyl decyl ether, n-hexadecyl dodecyl ether, n-dihexadecyl ether, n-hexadecyl octadecyl ether, n-hexadecyl eicosyl ether, n-hexadecyl docosyl ether, n-hexadecyl tetracosyl ether, n-hexadecyl hexacosyl ether, n-hexadecyl octacosyl ether, n-hexadecyl triacontyl ether: n-Octadecyl methyl ether, n-octadecyl ethyl ether, n-octadecyl propyl ether, n-octadecyl butyl ether, n-octadecyl pentyl ether, n-octadecyl hexyl ether, n-octadecyl heptyl ether, n-octadecyl octyl ether, n-octadecyl nonyl ether, n-octadecyl decyl ether, n-octadecyl dodecyl ether, n-dioctadecyl ether, n-octadecyl eicosyl ether, n-octadecyl docosyl ether, n-octadecyl tetracosyl ether, n-octadecyl hexacosyl ether, n-octadecyl octacosyl ether, n-octadecyl triacontyl ether; n-eicosyl methyl ether, n-eicosyl ethyl ether, n-eicosyl propyl ether, n-eicosyl butyl ether, n-eicosyl pentyl ether, n-eicosyl hexyl ether, n-eicosyl heptyl ether, n-eicosyl octyl ether, n-eicosyl nonyl ether, n-eicosyl decyl ether, n-eicosyl dodecyl ether, n-dieicosyl ether, n-eicosyl docosyl ether, n-eicosyl tetracosyl ether, n-eicosyl hexacosyl ether, n-eicosyl octacosyl ether, n-eicosyl triacontyl ether;n-docosyl methyl ether, n-docosyl ethyl ether, n-docosyl propyl ether, n-docosyl butyl ether, n-docosyl pentyl ether, n-docosyl hexyl ether, n-docosyl heptyl ether, n-docosyl octyl ether, n-docosyl nonyl ether, n-docosyl decyl ether, n-docosyl dodecyl ether, n-didocosyl ether, n-docosyl tetracosyl ether, n-docosyl hexacosyl ether, n-docosyl octacosyl ether, n-docosyl triacontyl ether; n-tetracosyl methyl ether, n-tetracosyl ethyl ether, n-tetracosyl propyl ether, n-tetracosyl butyl ether, n-tetracosyl pentyl ether, n-tetracosyl hexyl ether, n-tetracosyl heptyl ether, n-tetracosyl octyl ether, n-tetracosyl nonyl ether, n-tetracosyl decyl ether, n-tetracosyl dodecyl ether, n-ditetracosyl ether, n-tetracosyl hexacosyl ether, n-tetracosyl octacosyl ether, n-tetracosyl triacontyl ether; n-hexacosyl methyl ether, n-hexacosyl ethyl ether, n-hexacosyl propyl ether, n-hexacosyl butyl ether, n-hexacosyl pentyl ether, n-hexacosyl hexyl ether, n-hexacosyl heptyl ether, n-hexacosyl octyl ether, n-hexacosyl nonyl ether, n-hexacosyl decyl ether, n-hexacosyl dodecyl ether, n-dihexacosyl ether, n-hexacosyl octacosyl ether, n-hexacosyl triacontyl ether; n-octacosyl methyl ether, n-octacosyl ethyl ether, n-octacosyl propyl ether, n-octacosyl butyl ether, n-octacosyl pentyl ether, n-octacosyl hexyl ether, n-octacosyl heptyl ether, n-octacosyl octyl ether, n-octacosyl nonyl ether, n-octacosyl decyl ether, n-octacosyl dodecyl ether, n-dioctacosyl ether, n-octacosyl triacontyl ether;n-triacontyl methyl ether, n-triacontyl ethyl ether, n-triacontyl propyl ether, n-triacontyl butyl ether, n-triacontyl pentyl ether, n-triacontyl hexyl ether, n-triacontyl heptyl ether, n-triacontyl octyl ether, n-triacontyl nonyl ether, n-triacontyl decyl ether, n-triacontyl dodecyl ether, n-ditriacontyl ether;

[0032] The aliphatic ketone is preferably a linear saturated aliphatic ketone, a linear unsaturated aliphatic ketone, a branched saturated aliphatic ketone, or a branched unsaturated aliphatic ketone, and particularly preferably a linear saturated aliphatic ketone. Examples of linear saturated aliphatic ketones include n-tetradecyl methyl ketone, n-tetradecyl ethyl ketone, n-tetradecyl propyl ketone, n-tetradecyl butyl ketone, n-tetradecyl pentyl ketone, n-tetradecyl hexyl ketone, n-tetradecyl heptyl ketone, n-tetradecyl octyl ketone, n-tetradecyl nonyl ketone, n-tetradecyl decyl ketone, n-tetradecyl dodecyl ketone, n-ditetradecyl ketone, n-tetradecyl hexadecyl ketone, n-tetradecyl octadecyl ketone, n-tetradecyl eicosyl ketone, n-tetradecyl docosyl ketone, n-tetradecyl tetracosyl ketone, n-tetradecyl hexacosyl ketone, n-tetradecyl octacosyl ketone, and n-tetradecyl triacontyl ketone; n-hexadecyl methyl ketone, n-hexadecyl ethyl ketone, n-hexadecyl propyl ketone, n-hexadecyl butyl ketone, n-hexadecyl pentyl ketone, n-hexadecyl hexyl ketone, n-hexadecyl heptyl ketone, n-hexadecyl octyl ketone, n-hexadecyl nonyl ketone, n-hexadecyl decyl ketone, n-hexadecyl dodecyl ketone, n-dihexadecyl ketone, n-hexadecyl octadecyl ketone, n-hexadecyl eicosyl ketone, n-hexadecyl docosyl ketone, n-hexadecyl tetracosyl ketone, n-hexadecyl hexacosyl ketone, n-hexadecyl octacosyl ketone, n-hexadecyl triacontyl ketone;n-Octadecyl methyl ketone, n-octadecyl ethyl ketone, n-octadecyl propyl ketone, n-octadecyl butyl ketone, n-octadecyl pentyl ketone, n-octadecyl hexyl ketone, n-octadecyl heptyl ketone, n-octadecyl octyl ketone, n-octadecyl nonyl ketone, n-octadecyl decyl ketone, n-octadecyl dodecyl ketone, n-dioctadecyl ketone, n-octadecyl eicosyl ketone, n-octadecyl docosyl ketone, n-octadecyl tetracosyl ketone, n-octadecyl hexacosyl ketone, n-octadecyl octacosyl ketone, n-octadecyl triacontyl ketone; n-eicosyl methyl ketone, n-eicosyl ethyl ketone, n-eicosyl propyl ketone, n-eicosyl butyl ketone, n-eicosyl pentyl ketone, n-eicosyl hexyl ketone, n-eicosyl heptyl ketone, n-eicosyl octyl ketone, n-eicosyl nonyl ketone, n-eicosyl decyl ketone, n-eicosyl dodecyl ketone, n-dieicosyl ketone, n-eicosyl docosyl ketone, n-eicosyl tetracosyl ketone, n-eicosyl hexacosyl ketone, n-eicosyl octacosyl ketone, n-eicosyl triacontyl ketone; n-docosyl methyl ketone, n-docosyl ethyl ketone, n-docosyl propyl ketone, n-docosyl butyl ketone, n-docosyl pentyl ketone, n-docosyl hexyl ketone, n-docosyl heptyl ketone, n-docosyl octyl ketone, n-docosyl nonyl ketone, n-docosyl decyl ketone, n-docosyl dodecyl ketone, n-didocosyl ketone, n-docosyl tetracosyl ketone, n-docosyl hexacosyl ketone, n-docosyl octacosyl ketone, n-docosyl triacontyl ketone;n-tetracosyl methyl ketone, n-tetracosyl ethyl ketone, n-tetracosyl propyl ketone, n-tetracosyl butyl ketone, n-tetracosyl pentyl ketone, n-tetracosyl hexyl ketone, n-tetracosyl heptyl ketone, n-tetracosyl octyl ketone, n-tetracosyl nonyl ketone, n-tetracosyl decyl ketone, n-tetracosyl dodecyl ketone, n-ditetracosyl ketone, n-tetracosyl hexacosyl ketone, n-tetracosyl octacosyl ketone, n-tetracosyl triacontyl ketone; n-hexacosyl methyl ketone, n-hexacosyl ethyl ketone, n-hexacosyl propyl ketone, n-hexacosyl butyl ketone, n-hexacosyl pentyl ketone, n-hexacosyl hexyl ketone, n-hexacosyl heptyl ketone, n-hexacosyl octyl ketone, n-hexacosyl nonyl ketone, n-hexacosyl decyl ketone, n-hexacosyl dodecyl ketone, n-dihexacosyl ketone, n-hexacosyl octacosyl ketone, n-hexacosyl triacontyl ketone; n-octacosyl methyl ketone, n-octacosyl ethyl ketone, n-octacosyl propyl ketone, n-octacosyl butyl ketone, n-octacosyl pentyl ketone, n-octacosyl hexyl ketone, n-octacosyl heptyl ketone, n-octacosyl octyl ketone, n-octacosyl nonyl ketone, n-octacosyl decyl ketone, n-octacosyl dodecyl ketone, n-dioctacosyl ketone, n-octacosyl triacontyl ketone; n-triacontyl methyl ketone, n-triacontyl ethyl ketone, n-triacontyl propyl ketone, n-triacontyl butyl ketone, n-triacontyl pentyl ketone, n-triacontyl hexyl ketone, n-triacontyl heptyl ketone, n-triacontyl octyl ketone, n-triacontyl nonyl ketone, n-triacontyl decyl ketone, n-triacontyl dodecyl ketone, n-ditriacontyl ketone;

[0033] The aliphatic alcohol is preferably a linear saturated aliphatic alcohol, a linear unsaturated aliphatic alcohol, a branched saturated aliphatic alcohol, or a branched unsaturated aliphatic alcohol, and particularly preferably a linear saturated aliphatic alcohol. Examples of linear saturated aliphatic alcohols include n-tetradecyl alcohol, n-pentadecyl alcohol, n-hexadecyl alcohol, n-heptadecyl alcohol, n-octadecyl alcohol, n-nonadecyl alcohol, n-eicosyl alcohol, n-heneicosyl alcohol, n-docosyl alcohol, n-tricosyl alcohol, n-tetracosyl alcohol, n-pentacosyl alcohol, n-hexacosyl alcohol, n-heptacosyl alcohol, n-octacosyl alcohol, n-nonacosyl alcohol, and n-triacontyl alcohol.

[0034] The aliphatic amide is preferably a linear saturated aliphatic amide, a linear unsaturated aliphatic amide, a branched saturated aliphatic amide, or a branched unsaturated aliphatic amide, and particularly preferably a linear saturated aliphatic amide. Examples of linear saturated aliphatic amides include n-tetradecylamine, n-pentadecylamine, n-hexadecylamine, n-heptadecylamine, n-octadecylamine, n-nonadecylamine, n-eicosylamine, n-heneicosylamine, n-docosylamine, n-tricosylamine, n-tetracosylamine, n-pentacosylamine, n-hexacosylamine, n-heptacosylamine, n-octacosylamine, n-nonacosylamine, and n-triacontylamine.

[0035] The thermal storage composition E may contain two or more compounds L.

[0036] In one embodiment, in order to further suppress bleeding of compound L, compound L may be contained in heat storage composition E in a form encapsulated in microcapsules, or may be contained in heat storage composition E in a form filled in porous microparticles.

[0037] In one aspect, the microcapsules containing compound L encapsulate compound L and have a coating containing a resin as an outer shell. Examples of materials for forming the coating include thermoplastic resins and thermosetting resins. Specific examples of resins for forming the coating include melamine resins, acrylic resins, urethane resins, nylon resins, and olefin resins. The material for forming the coating is preferably a resin that is not destroyed when producing the thermal storage composition E containing microcapsules containing compound L and polymer 1, or when producing a molded article containing the thermal storage composition E. In one aspect, the average primary particle diameter of the microcapsules containing compound L (hereinafter sometimes referred to as primary particles) is preferably 0.2 to about 1000 μm, more preferably 0.2 to 500 μm. In another aspect, the microcapsules having an average primary particle diameter of 0.2 to 50 μm, more preferably 0.2 to 10 μm, aggregate to form secondary particles, and the average particle diameter (average secondary particle diameter) of the secondary particles is preferably 10 to about 1000 μm, more preferably 50 to 500 μm. Examples of microcapsules containing paraffins as compound L include Micronal 5001 X (manufactured by BASF) and Rikenresin PMCD-25SP (manufactured by Miki Riken Kogyo Co., Ltd.).

[0038] As used herein, "porous microparticles" refers to microparticles containing an inorganic or organic substance and having pores penetrating from the surface to the interior. The porous microparticles may be hollow microparticles having internal cavities, or may be microparticles without cavities. Examples of porous microparticles containing inorganic substances include those containing metal oxides such as silica and alumina, silicates such as calcium silicate and magnesium silicate, carbonates such as calcium carbonate and magnesium carbonate, and phosphates such as magnesium phosphate and apatite. Examples of porous microparticles containing organic substances include foams containing various resins such as polyethylene and polyurethane, and expanded graphite. From the viewpoints of mechanical strength and chemical stability, porous microparticles containing inorganic substances are preferred. Furthermore, porous silica is more preferred because many microparticles with uniform particle sizes are commercially available and easily available. The particle size of the porous microparticles is preferably 0.2 μm to 500 μm, more preferably 0.2 μm to 300 μm.

[0039] When the porous fine particles contain an inorganic substance, the surfaces of the porous fine particles may be coated with a resin layer, for example, reactive resins such as melamine resin, acrylic resin, and urethane resin, and thermoplastic resins such as nylon resin and polyolefin resin.

[0040] The porous microparticles filled with compound L may be those in which a component that acts as a capture substance for compound L has been introduced into the porous microparticles, and the capture substance captures compound L. For example, when compound L is paraffin and the porous microparticles are silica, examples of the capture substance include substances having affinity for paraffin, such as oligomers or polymers of polyisobutylene, polyoxypropylene, polyacrylate, polyether polyol, and polymethacrylate, to which reactive silyl groups that have affinity and reactivity with silica and are reactive groups that bond to each other are bonded.

[0041] Polymer 1 As described above, polymer 1 is a polymer in which, in relation to compound L, the ΔHSP between polymer 1 and compound L is 3.5 or less.

[0042] Preferably, polymer 1 has a molecular weight greater than 2000.

[0043] The melting enthalpy ΔHm of polymer 1 (one type of polymer 1 or a mixture of multiple polymers 1) or polymer W described below in the range of 10 to 60°C is preferably 30 J / g or more, more preferably 40 J / g or more, even more preferably 50 J / g or more, and still more preferably 60 J / g or more. The ΔHm is usually 200 J / g or less. The ΔHm is measured according to the method described in the Examples.

[0044] For example, the number of structural units B described later in polymer 1 and the L ６ By adjusting the number of carbon atoms in the compound, ΔHm can be adjusted to the above range, and as a result, the heat storage performance of the heat storage composition can be adjusted.

[0045] Preferably, polymer 1 (one type of polymer 1 or a mixture of multiple polymers 1) or polymer W has a melting peak temperature Tm in the range of 10 to 60°C, more preferably 10 to 50°C, and even more preferably 10 to 40°C.

[0046] The melting peak temperature is the temperature at the apex of the melting peak obtained by analyzing the melting curve, and can be obtained by the procedure described in the Examples. When there are multiple melting peaks, the temperature at the apex of the melting peak with the largest amount of melting endotherm is taken as the melting peak temperature.

[0047] For example, the number of structural units B described later in polymer 1 and the L ６ By adjusting the number of carbon atoms, it is possible to adjust the melting peak temperature of Polymer 1. As a result, it is possible to adjust the heat storage performance of the heat storage composition containing Polymer 1.

[0048] Activation energy E of flow of polymer 1 (one type of polymer 1 or a mixture of multiple polymers 1) or polymer W ａFrom the viewpoint of further reducing the extrusion load during molding, the E is preferably 40 kJ / mol or more, more preferably 50 kJ / mol or more, and even more preferably 60 kJ / mol or more. In addition, in order to ensure a good appearance of the molded article obtained by extrusion molding, the E is preferably 100 kJ / mol or less, more preferably 90 kJ / mol or less, and even more preferably 80 kJ / mol or less. ａ The magnitude of E depends mainly on the number of long chain branches in the polymer. Polymers with more long chain branches have a higher E ａ is higher.

[0049] Activation energy of flow E ａ is determined by the following method. First, the melt complex viscosity-angular frequency curve of polymer 1 is measured at each temperature T (unit: °C) for three or more temperatures including 170°C from among temperatures of 90°C, 110°C, 130°C, 150°C, and 170°C. The melt complex viscosity-angular frequency curve is a double logarithmic curve with the logarithm of the melt complex viscosity (unit: Pa sec) on the vertical axis and the logarithm of the angular frequency (unit: rad / sec) on the horizontal axis. Next, for each of the melt complex viscosity-angular frequency curves measured at temperatures other than 170°C, the angular frequency is adjusted to a Ｔ times, the melt complex viscosity is 1 / a Ｔ Double. a Ｔ is a value that is appropriately determined so that the melt complex viscosity-angular frequency curve measured at each temperature other than 170°C overlaps with the melt complex viscosity-angular frequency curve at 170°C.

[0050] a Ｔ is generally called a shift factor, and is a value that varies depending on the measurement temperature of the melt complex viscosity-angular frequency curve.

[0051] Next, at each temperature T, Ｔ ) and [1 / (T+273.16)] are calculated, and [ln(a Ｔ ) and [1 / (T+273.16)] are approximated by the least squares method using the following formula (ii), and the slope m of the straight line representing formula (ii) is determined. ａ Find ln(a Ｔ)=m(1 / (T+273.16))+n (ii) E ａ =|0.008314×m| (iii) a Ｔ : Shift factor E ａ : Activation energy of flow (unit: kJ / mol) T: Temperature (unit: °C)

[0052] The above calculation may be performed using commercially available calculation software, such as Ochestrator manufactured by TA Instruments.

[0053] The above method is based on the following principle. It is known that melt complex viscosity-angular frequency curves (double logarithmic curves) measured at different temperatures can be superimposed on a single parent curve (sometimes referred to as a master curve) by horizontally shifting each temperature curve by a predetermined amount, and this is called the "temperature-time superposition principle." The amount of horizontal shift is called a shift factor, and the shift factor is a value that depends on temperature. It is known that the temperature dependence of the shift factor is expressed by equations (ii) and (iii), and equations (ii) and (iii) are called Arrhenius equations.

[0054] [ln(a Ｔ ) and [1 / (T+273.16)] are approximated by the least squares method using the above formula (ii) so that the correlation coefficient is 0.9 or more.

[0055] The melt complex viscosity-angular frequency curve is measured using a viscoelasticity measuring device (e.g., ARES manufactured by TA Instruments) under the following conditions: geometry: parallel plate, plate diameter: 25 mm, plate spacing: 1.2 to 2 mm, strain: 5%, and angular frequency: 0.1 to 100 rad / sec. The measurement is carried out in a nitrogen atmosphere. It is also preferable to preliminarily blend an appropriate amount of antioxidant (e.g., 1000 ppm by weight) into the measurement sample.

[0056] The extensional viscosity nonlinear index k, which represents the strength of strain hardening of polymer 1, is preferably 0.85 or more, more preferably 0.90 or more, and even more preferably 0.95 or more, from the viewpoint of excellent moldability, such as small neck-in during T-die film processing, small thickness unevenness of the resulting film, and resistance to foam breakage during foam molding. Strain hardening of a polymer means that when strain is applied to the polymer, the extensional viscosity increases rapidly above a certain strain amount. Furthermore, from the viewpoint of ease of molding polymer 1 or the heat storage composition of the present invention containing polymer 1 into a desired shape, index k is preferably 2.00 or less, more preferably 1.50 or less, even more preferably 1.40 or less, even more preferably 1.30 or less, and particularly preferably 1.20 or less.

[0057] The extensional viscosity nonlinearity index k is determined by the following method: －１ Viscosity η at the extension time t when a polymer is uniaxially extended at a strain rate of Ｅ 1(t), a temperature of 110°C and 0.1 seconds －１ Viscosity η at the extension time t when the polymer is uniaxially stretched at a strain rate of Ｅ 0.1(t). The η Ｅ 1(t) and the η Ｅ Substitute 0.1(t) into the following formula to find α(t): α(t) = η Ｅ 1(t) / η Ｅ 0.1(t) The logarithm of α(t) (ln(α(t))) is plotted against the extension time t, and ln(α(t)) and t are approximated by the least squares method using the following formula when t is in the range of 2.0 to 2.5 seconds. The value of the slope of the line representing the following formula is k: ln(α(t)) = kt When the correlation function r2 used for the least squares approximation using the above formula is 0.9 or greater, k is adopted.

[0058] The viscosity when stretched uniaxially is measured using a viscoelasticity measuring device (for example, ARES manufactured by TA Instruments) in a nitrogen atmosphere.

[0059] In the extensional viscosity measurement, polymers with long chain branches have a property that the extensional viscosity deviates from the linear region and increases sharply in the high strain region, that is, they have a so-called strain hardening property. In the case of a polymer with strain hardening, the logarithm of α(t) (ln(α(t))) is expressed as ln(l / l ０ ) (where l ０ and l are the lengths of the sample at extension times 0 and t, respectively) [Reference: Koyama Kiyoto, Ishizuka Osamu; Sen'i Gakkaishi Journal, 37, T-258 (1981)]. In the case of a polymer that does not have strain hardening, α(t) is 1 for any extension time, and the slope k of the line obtained by plotting the logarithm of α(t) (ln(α(t))) against extension time is 0. In the case of a polymer that has strain hardening, the slope k of the line plot does not become 0, particularly in the high strain region. In the present invention, the slope k of the line obtained by plotting the logarithm of the nonlinear parameter α(t) (ln(α(t))) against extension time is defined as k, as a parameter representing the degree of strain hardening.

[0060] When the polystyrene-equivalent weight average molecular weight Mw of the polymer 1 according to the present invention is measured by gel permeation chromatography (GPC), the mobile phase is usually orthodichlorobenzene and the measurement temperature is 140°C.

[0061] Polymer 1 preferably contains structural unit A derived from ethylene so that it has good moldability.

[0062] With respect to Polymer 1, the ratio A defined by the following formula (i) is preferably 0.95 or less, more preferably 0.90 or less, and even more preferably 0.80 or less. １ / α ０ (i) In formula (i), α １is obtained by measuring the absolute molecular weight and intrinsic viscosity of a polymer by gel permeation chromatography using an apparatus equipped with a light scattering detector and a viscosity detector, plotting the measured data with the logarithm of the absolute molecular weight on the horizontal axis and the logarithm of the intrinsic viscosity on the vertical axis, and performing least squares approximation of the logarithm of the absolute molecular weight and the logarithm of the intrinsic viscosity using equation (i-1) in the range where the horizontal axis is equal to or greater than the logarithm of the weight average molecular weight of the polymer and equal to or less than the logarithm of the z-average molecular weight, and determining the value α of the slope of the straight line represented by equation (i-1). １ This is the value obtained by calculating log [η １ ]=α １ log M １ +logK １ (i-1) In formula (i-1), [η １ ] represents the intrinsic viscosity of the polymer (unit: dl / g), and M １ represents the absolute molecular weight of the polymer, and K １ is a constant. α ０ is obtained by measuring the absolute molecular weight and intrinsic viscosity of polyethylene standard substance 1475a (manufactured by the National Institute of Standards and Technology) by gel permeation chromatography using an apparatus equipped with a light scattering detector and a viscosity detector, plotting the measured data with the logarithm of the absolute molecular weight on the horizontal axis and the logarithm of the intrinsic viscosity on the vertical axis, and performing least squares approximation of the logarithm of the absolute molecular weight and the logarithm of the intrinsic viscosity using equation (i-2) within a range where the horizontal axis is equal to or greater than the logarithm of the weight-average molecular weight of the polyethylene standard substance 1475a and equal to or less than the logarithm of the z-average molecular weight, and determining the value α of the slope of the straight line expressed by equation (i-2). ０ This is the value obtained by calculating log [η ０ ]=α ０ log M ０ +logK ０ (i-2) In formula (i-2), [η ０ ] represents the intrinsic viscosity (unit: dl / g) of polyethylene standard material 1475a, and M ０ represents the absolute molecular weight of polyethylene standard 1475a, and K ０ is a constant.

[0063] In measuring the absolute molecular weight and intrinsic viscosity of the polymer and polyethylene standard substance 1475a by gel permeation chromatography, the mobile phase is orthodichlorobenzene and the measurement temperature is 155°C.

[0064] The absolute molecular weight is determined from the data obtained by the light scattering detector, and the intrinsic viscosity ([η]) is determined by the viscosity detector. Malvern's data processing software OmniSEC (registered trademark) (version 4.7) is used, and calculations are performed based on the literature "Size Exclusion Chromatography, Springer (1999)."

[0065] The polyethylene standard 1475a (manufactured by the National Institute of Standards and Technology) is a non-branched high density polyethylene.

[0066] The formula (i-1) and formula (i-2) are called the Mark-Hauwink-Sakurada formulas, which represent the correlation between the intrinsic viscosity and molecular weight of a polymer, and α １ The smaller the α, the greater the number of entanglements of polymer chains due to the branched structure. Since the polyethylene reference material 1475a does not form a branched structure, entanglements of polymer chains due to the branched structure do not occur. ０ α for １ The smaller the ratio A, the greater the amount of long chain branched structures formed by the structural unit A described below in the polymer.

[0067] The weight average molecular weight of Polymer 1, as measured by gel permeation chromatography using an apparatus equipped with a light scattering detector, is preferably 10,000 to 1,000,000, more preferably 50,000 to 750,000, and even more preferably 100,000 to 500,000.

[0068] In measuring the weight average molecular weight of Polymer 1 by gel permeation chromatography, the mobile phase was orthodichlorobenzene and the measurement temperature was 155°C.

[0069] Examples of polymer 1 include polymers having a long-chain alkyl group or a long-chain ether group on the side chain, which may be branched and optionally substituted with a functional group. The polymer is not particularly limited, but examples include polymers whose main component is a (meth)acrylate having a long-chain alkyl group or a long-chain ether group on the side chain, which may be branched and optionally substituted with a functional group; polymers whose main component is a vinyl ester main chain having a long-chain alkyl group or a long-chain ether group on the side chain, which may be branched and optionally substituted with a functional group; polymers whose main component is a vinyl ether main chain having a long-chain alkyl group or a long-chain ether group on the side chain, which may be branched and optionally substituted with a functional group; and polymers whose main component is a polyolefin main chain having a long-chain alkyl group or a long-chain ether group on the side chain, which may be branched and optionally substituted with a functional group. The side chain is preferably a long-chain alkyl group which may be branched and optionally substituted with a functional group, and polymers whose main component is a (meth)acrylate or polyolefin main chain are preferred. Examples of polymer 1 include polymers described in JP-A-2015-091903, WO2016 / 098674, and WO2017 / 217419.

[0070] Two or more types of the polymer 1 may be used in combination. The heat storage composition E and the composite of the present invention described below may contain a sensible heat storage material. Examples of the sensible heat storage material include concrete, crushed stone, iron, copper, steel, and polyethylene.

[0071] As an embodiment of the polymer 1, C １４～３０ Examples of suitable polymers include those containing structural units having an alkyl group such as the above.

[0072] It is preferable that polymer 1 has a structural unit represented by the following formula (1) (sometimes referred to as structural unit B). In formula (1), R １ represents a hydrogen atom or a methyl group; １１ represents a single bond, —CO—O—, —O—CO—, or —O—; L １２ is a single bond, -CH ２ -, -CH ２ -CH ２ -, -CH ２ -CH ２-CH ２ -, -CH ２ -CH(OH)-CH ２ - or -CH ２ -CH(CH ２ OH)—, L １３ is a single bond, -CO-O-, -O-CO-, -O-, -CO-NH-, -NH-CO-, -CO-NH-CO-, -NH-CO-NH-, -NH-, or -N(CH ３ )-, L １６ is C １４～３０ It should be noted that L １１ , L １２ , and L １３ In each of the horizontally written chemical formulas, the left side corresponds to the upper side of formula (1) (the main chain side of the polymer), and the right side corresponds to the lower side of formula (1) (the terminal side of the side chain of the polymer).

[0073] R １ is preferably a hydrogen atom.

[0074] L １１ is preferably —CO—O—, —O—CO—, or —O—, more preferably —CO—O— or —O—CO—, and even more preferably —CO—O—.

[0075] L １２ is preferably a single bond, —CH ２ -, -CH ２ -CH ２ - or -CH ２ -CH ２ -CH ２ -, and more preferably a single bond.

[0076] L １３ is preferably a single bond, —O—CO—, —O—, —NH—, or —N(CH ３ )-, and more preferably a single bond.

[0077] L in formula (1) １６ is C so that the composition containing polymer 1 has good moldability. １４～３０ is an alkyl group of the formula: １４～３０ The alkyl group of １４～３０ and C １４～３０Examples of branched alkyl groups include: ６ is preferably C １４～３０ and more preferably a straight chain alkyl group of C １４～２４ and more preferably C １６～２２ is a straight chain alkyl group.

[0078] Said C １４～３０ Examples of the straight-chain alkyl group include an n-tetradecyl group, an n-pentadecyl group, an n-hexadecyl group, an n-heptadecyl group, an n-octadecyl group, an n-nonadecyl group, an n-eicosyl group, an n-heneicosyl group, an n-docosyl group, an n-tricosyl group, an n-tetracosyl group, an n-pentacosyl group, an n-hexacosyl group, an n-heptacosyl group, an n-octacosyl group, an n-nonacosyl group, and an n-triacontyl group.

[0079] Said C １４～３０ Examples of the branched alkyl group include an isotetradecyl group, an isopentadecyl group, an isohexadecyl group, an isoheptadecyl group, an isooctadecyl group, an isononadecyl group, an isoeicosyl group, an isoheneicosyl group, an isodocosyl group, an isotricosyl group, an isotetracosyl group, an isopentacosyl group, an isohexacosyl group, an isoheptacosyl group, an isooctacosyl group, an isononacosyl group, and an isotriacontyl group.

[0080] R in formula (1) １ , L １１ , L １２ , L １３ Examples of the combination include the following:

[0081] R in formula (1) １ , L １１ , L １２ , L １３ The combination is preferably:

[0082] R in formula (1) １ , L １１ , L １２ , L １３ The following combinations are also preferred: １ is a hydrogen atom, and L １１ , L １２ , and L １３ is a single bond, and L １６ is C １４～３０ and R １ is a hydrogen atom or a methyl group, and L １１ is —CO—O—, and L ２ and L ３ is a single bond, and L １６ is C １４～３０ A combination of alkyl groups.

[0083] R in formula (1) １ , L １１ , L １２ , and L １３ The combination is more preferably:

[0084] R in formula (1) １ , L １１ , L １２ , and L １３ The combinations are more preferably as follows:

[0085] The structural unit B is preferably n-hexadecene, n-octadecene, n-eicosene, n-docosene, n-tetracosene, n-hexacosene, n-octacosene, n-triacontene, n-dotriacontene, n-tetradecyl acrylate, n-pentadecyl acrylate, n-hexadecyl acrylate, n-heptadecyl acrylate, n-octadecyl acrylate, n-nonadecyl acrylate, or n-eicosene. acrylate, n-heneicosyl acrylate, n-docosyl acrylate, n-tricosyl acrylate, n-tetracosyl acrylate, n-pentacosyl acrylate, n-hexacosyl acrylate, n-heptacosyl acrylate, n-octacosyl acrylate, n-nonacosyl acrylate, n-triacontyl acrylate, n-tetradecyl methacrylate, n-pentadecyl methacrylate, n-hexacosyl acrylate, n-Triacontyl methacrylate, n-vinyl hexadecyl methacrylate, n-vinyl octadecyl methacrylate, n-vinyl eicosylate, n-vinyl docosylate, n-tetradecyl vinyl ether, n-hexadecyl vinyl ether, n-octadecyl vinyl ether, n-tricosyl vinyl ether, n-pentacosyl vinyl ether, n-hexacosyl vinyl methacrylate, n-heptacosyl vinyl ether, n-octacosyl vinyl ether, n-nonacosyl methacrylate, n-triacontyl methacrylate, n-vinyl tetradecylate, n-vinyl hexadecylate, n-vinyl octadecylate, n-vinyl eicosylate, n-vinyl docosylate, n-tetradecyl vinyl ether, n-hexadecyl vinyl ether, n-octadecyl vinyl ether, n-eicosyl vinyl ether, or n-docosyl vinyl ether.

[0086] Polymer 1 may have two or more types of the structural unit B, and may be, for example, a polymer having a structural unit derived from n-hexadecyl acrylate and a structural unit derived from n-octadecyl acrylate.

[0087] Polymer 1 is preferably a polymer having a structural unit derived from ethylene (sometimes referred to as structural unit A) so that a molded article containing a composition containing polymer 1 has good shape retention at or above the melting peak temperature of polymer 1, and the composition containing polymer 1 has good moldability. The structural unit A is a structural unit obtained by polymerizing ethylene, and the structural unit A may form a branched structure in the polymer.

[0088] The polymer 1 is preferably a polymer having a structural unit B represented by formula (1) and a structural unit A derived from ethylene.

[0089] Polymer 1 may have at least one structural unit (sometimes referred to as structural unit C) selected from the group consisting of structural units represented by the following formula (2) and structural units represented by the following formula (3): In formula (2), R ２ represents a hydrogen atom or a methyl group; ２１ represents a single bond, —CO—O—, —O—CO—, or —O—; L ２４ is C １～８ represents an alkylene group represented by the formula: ２５ represents a hydrogen atom, an epoxy group, -CH(OH)-CH ２ OH, a carboxy group, a hydroxy group, an amino group, or C １～４ It is to be noted that L represents an alkylamino group represented by the formula: １ In each of the horizontally written chemical formulas in the explanation of the chemical structure, the left side corresponds to the upper side of formula (2) (the main chain side of the polymer), and the right side corresponds to the lower side of formula (2) (the terminal side of the side chain of the polymer).

[0090] In formula (2), R ２ is preferably a hydrogen atom.

[0091] In formula (2), L ２１ is preferably —CO—O—, —O—CO—, or —O—, more preferably —CO—O— or —O—CO—, and even more preferably —CO—O—.

[0092] In formula (2), L ２４ C as １～８Examples of the alkylene group include a methylene group, an ethylene group, an n-propylene group, a 1-methylethylene group, an n-butylene group, a 1,2-dimethylethylene group, a 1,1-dimethylethylene group, a 2,2-dimethylethylene group, an n-pentylene group, an n-hexylene group, an n-heptalene group, an n-octylene group, and a 2-ethyl-n-hexylene group.

[0093] In formula (2), L ２４ is preferably a methylene group, an ethylene group, or an n-propylene group, more preferably a methylene group.

[0094] In formula (2), L ２５ C as １～４ Examples of the alkylamino group include a methylamino group, an ethylamino group, a propylamino group, a butylamino group, a dimethylamino group, and a diethylamino group.

[0095] In formula (2), L ２５ is preferably a hydrogen atom, an epoxy group, or CH(OH)—CH ２ It is OH, and more preferably a hydrogen atom.

[0096] R in formula (2) ２ , L ２１ , L ２４ , L ２５ Examples of the combination include the following:

[0097] R in formula (2) ２ , L ２１ , L ２４ , L ２５ The combination is preferably:

[0098] R in formula (2) ２ , L ２１ , L ２４ , L ２５ The combination is more preferably:

[0099] R in formula (2) ２ , L ２１ , L ２４ , L ２５ The combinations are more preferably as follows:

[0100] Examples of the structural unit represented by formula (2) include propylene, butene, 1-pentene, 1-hexene, 1-heptene, 1-octene, acrylic acid, methacrylic acid, vinyl alcohol, methyl acrylate, ethyl acrylate, n-propyl acrylate, isopropyl acrylate, n-butyl acrylate, isobutyl acrylate, sec-butyl acrylate, tert-butyl acrylate, methyl methacrylate, ethyl methacrylate, n-propyl methacrylate, isopropyl methacrylate, n-butyl methacrylate, isobutyl methacrylate, sec-butyl methacrylate, and tert-butyl methacrylate. Examples of the alkyl esters derived from vinyl ethers include vinyl formate, vinyl acetate, vinyl propionate, vinyl(n-butyrate), vinyl(isobutyrate), methyl vinyl ether, ethyl vinyl ether, n-propyl vinyl ether, isopropyl vinyl ether, n-butyl vinyl ether, isobutyl vinyl ether, sec-butyl vinyl ether, tert-butyl vinyl ether, glycidyl acrylate, glycidyl methacrylate, 2,3-dihydroxypropyl acrylate, 2,3-dihydroxypropyl methacrylate, 3-(dimethylamino)propyl acrylate, and 3-(dimethylamino)propyl methacrylate.

[0101] When polymer 1 contains structural unit C, and structural unit C is represented by formula (3), the structural unit may be derived from maleic anhydride. Furthermore, structural unit C may be formed by a condensation reaction of two structural units that may be selected in combination from structural unit B and structural unit C represented by formula 2.

[0102] Polymer 1 may have two or more types of the structural unit C, and may be, for example, a polymer having a structural unit derived from methyl acrylate, a structural unit derived from ethyl acrylate, and a structural unit derived from glycidyl methacrylate.

[0103] Polymer 1 is preferably a polymer having a structural unit B represented by formula (1). Examples of polymer 1 having structural unit B represented by formula (1) include: polymer 1 consisting of structural unit B, polymer 1 having structural unit B and structural unit A, polymer 1 having structural unit B and structural unit C, and polymer 1 having structural unit B, structural unit A, and structural unit C.

[0104] Examples of the "polymer 1 composed of structural unit B" include the following: １ is a hydrogen atom or a methyl group, and L １１ , L １２ , and L １３ is a single bond, and L １６ is C １４～３０ A polymer comprising a structural unit B represented by formula (1), which is an alkyl group represented by R １ is a hydrogen atom or a methyl group, and L １１ -CO-O-, L １２ and L １３ is a single bond, L １６ is C １４～３０ A polymer comprising a structural unit B represented by formula (1), which is an alkyl group represented by the formula (1).

[0105] Examples of the "polymer 1 having the structural unit B and the structural unit A" include the following: １ is a hydrogen atom or a methyl group, and L １１ , L １２ , and L １３ is a single bond, and L １６ is C １４～３０ A polymer having a structural unit B represented by formula (1), which is an alkyl group, and the structural unit A. In this case, it is preferable that the total number of the structural units A and B is 90% or more, relative to 100% of the total number of all structural units contained in the polymer.

[0106] Examples of the "polymer 1 having the structural unit B, the structural unit A, and the structural unit C" include the following: １ is a hydrogen atom or a methyl group, and L １ is —CO—O—, and L １２ and L １３ is a single bond, and L １６ is C １４～３０ A structural unit B represented by formula (1) which is an alkyl group represented by formula (1), a structural unit A, and R ２ is a hydrogen atom or a methyl group, and L ２１ is —CO—O—, and L ２４ is a methylene group, and L ２５ is a hydrogen atom, and a structural unit C represented by formula (2). In this case, the total number of the structural units A, B, and C is 90% or more relative to 100% of the total number of all structural units contained in the polymer.

[0107] From the viewpoint of increasing ΔHm, polymer 1 is preferably a polymer in which the number of the structural units B is 50 to 80% relative to 100% in total number of the structural units B and A contained in the polymer.

[0108] From the viewpoint of moldability, polymer 1 is preferably a polymer in which the number of the structural units B is 10 to 50% relative to 100% in total of the structural units B and A contained in the polymer.

[0109] Examples of the "polymer 1 having structural units B and C" include the following: １ is a hydrogen atom or a methyl group, and L １1 is —CO—O—, and L １２ and L １３ is a single bond, and L １６ is C １４～３０ A structural unit B represented by formula (1) which is an alkyl group, and R ２ is a hydrogen atom or a methyl group, and L ２１ is —CO—O—, and L ２４ is a methylene group, and L ２５is a hydrogen atom. In this case, it is preferable that the number of structural units B is 80% or more relative to 100% of the total number of structural units B and C contained in the polymer.

[0110] In one embodiment of polymer 1, relative to 100% of the total number of structural units A, B, and C, the number of structural units A is typically 0 to 99%, and the total number of structural units B and C is typically 1 to 100%. Relative to 100% of the total number of structural units B and C, the number of structural units B is typically 1 to 100%, and the number of structural units C is typically 0 to 99%.

[0111] In one embodiment, the number of structural units A in polymer 1 is 1 to 99% relative to the total number of structural units A, B, and C (100%), and is preferably 70 to 99%, more preferably 80 to 97.5%, and even more preferably 85 to 92.5%, so that the shape retention of a molded article containing the heat storage composition of the present invention is good. The total number of structural units B and C in polymer 1 is preferably 1 to 30%, more preferably 2.5 to 20%, and even more preferably 7.5 to 15%, relative to the total number of structural units A, B, and C (100%), so that the shape retention of a molded article containing the heat storage composition of the present invention is good.

[0112] In one embodiment, the number of structural units B in polymer 1 is typically 1 to 100%, relative to 100% (the total number of structural units B and C). In order to ensure that a composition containing polymer 1 has good heat storage performance, the number is preferably 60 to 100%, and more preferably 80 to 100%.

[0113] In one embodiment, the number of structural units C in polymer 1 is typically 0 to 99%, relative to 100% (the total number of structural units B and C). In order to ensure that a composition containing polymer 1 has good heat storage performance, the number is preferably 0 to 40%, and more preferably 0 to 20%.

[0114] The number of structural units A, the number of structural units B, and the number of structural units C were measured by a known method. １３ C nuclear magnetic resonance spectrum (hereinafter, １３C-NMR spectrum) or １ H nuclear magnetic resonance spectrum (hereinafter, １ It is determined from the integral value of the signals assigned to each structural unit (H-NMR spectrum).

[0115] When polymer 1 is produced by a method of reacting a precursor polymer P described below with a compound α described below, the number of structural units A, the number of structural units B, and the number of structural units C can be determined, for example, by the following method.

[0116] <Constituent unit A derived from ethylene when precursor polymer P is ethylene-methyl acrylate copolymer> １ and structural unit C derived from methyl acrylate １ When the precursor polymer P contains a structural unit A derived from ethylene, first, the number of structural units A contained in the precursor polymer P is １ and structural unit C １ Find the number of. １３ When determining from a C-NMR spectrum, for example, １ , b １ , c １ , d １ , and e １ The integral value in the range is determined, and the number of dyads (AA, AC, CC) of structural unit A and structural unit C is determined from the following formula, and the number of structural units A and C is determined by substituting this into the following formula. Here, AA is a structural unit A-structural unit A dyad, AC is a structural unit A-structural unit C dyad, and CC is a structural unit C-structural unit C dyad.

[0117] a １ :29.0-31.0ppmb １ :32.5-33.2ppmc １ :42.0-42.3ppmd １ :43.5-44.5ppm e １ :45.5-46.5ppm

[0118] AA = a １ / 4+b １ / 2 AC = e １ CC = c １ +d １

[0119] <Structural Unit C Derived from Methyl Acrylate １ The conversion rate X of the structural unit B represented by formula (1) Ｂ > (unit: %) The structural unit C contained in the precursor polymer P reacts with the compound α described below to form the structural unit B in the polymer 1. １ The conversion rate X of the structural unit B Ｂ is calculated by the following method.

[0120] Signals (within the range f １ ) and the signal (range g １ ) into the formula below to calculate the conversion rate.

[0121] f １ :50.5-51.2ppm g １ :63.9-64.8ppm

[0122] Conversion rate (X Ｂ )=100×g1 / (f1+g1)

[0123] <Number of Structural Units A Derived from Ethylene, Structural Units B Represented by Formula (1), and Structural Units C Derived from Methyl Acrylate Contained in Polymer 1> (unit: %) In the reaction between Precursor Polymer P and Compound α described below, the structural units A contained in Precursor Polymer P do not change. Therefore, the number of structural units A contained in Polymer 1 and the number of structural units A contained in Precursor Polymer P are １ The number of structural units A is the same (number of structural units A = number of structural units A １ The number of structural units B contained in polymer 1 is the number of structural units C contained in precursor polymer P. １ Number and conversion rate X Ｂ (Number of structural units B = Number of structural units C １ Number of × Conversion Rate X Ｂ The number of structural units C contained in polymer 1 is the same as that of structural units C contained in precursor polymer P. １ and the number of structural units B contained in polymer 1 (the number of structural units C = the number of structural units C １(number of units - number of structural units B).

[0124] The contents (% by weight) of the structural unit A, the structural unit B, and the structural unit C contained in the polymer 1 according to the present invention can be calculated using the following formulas.

[0125] Weight % of structural unit A = (number of structural units A × molecular weight of structural unit A) / (number of structural units A × molecular weight of structural unit A + number of structural units B × molecular weight of structural unit B + number of structural units C × molecular weight of structural unit C).

[0126] Weight % of structural unit B=(Number of structural units B×Molecular weight of structural unit B) / (Number of structural units A×Molecular weight of structural unit A+Number of structural units B×Molecular weight of structural unit B+Number of structural units C×Molecular weight of structural unit C).

[0127] Weight % of structural unit C=(number of structural units C×molecular weight of structural unit C) / (number of structural units A×molecular weight of structural unit A+number of structural units B×molecular weight of structural unit B+number of structural units C×molecular weight of structural unit C).

[0128] In one example, the precursor polymer P is a polymer having at least one structural unit C selected from the group consisting of structural units represented by the above formula (2) and structural units represented by the above formula (3) (wherein, in formula (2), L ２１ may be —CO—O—, —O—CO—, or —O—.

[0129] Compound α The compound (sometimes referred to as compound α) that reacts with the structural unit C in the precursor polymer P to form the structural unit B is at least one compound selected from the group consisting of: １４～３０ Alcohols having an alkyl group of the formula C １４～３０ an amine having an alkyl group represented by the formula C １４～３０ alkyl halides having an alkyl group represented by the formula C １４～３０ a carboxylic acid having an alkyl group represented by the formula C １４～３０ Carboxylic acid amides having an alkyl group represented by the formula C １４～３０ a carboxylic acid halide having an alkyl group represented by the formula C １４～３０ Carbamic acids having an alkyl group of the formula C １４～３０ and alkyl ureas having an alkyl group of C１４～３０ Isocyanates having alkyl groups of the formula:

[0130] Examples of methods for producing polymer 1 include a method of reacting precursor polymer P with compound α and a method of polymerizing each monomer corresponding to a structural unit of polymer 1. The alkyl group of compound α may be, for example, a linear alkyl group or a branched alkyl group, but a linear alkyl group is preferred.

[0131] The precursor polymer P is a raw material for producing polymer 1, and the precursor polymer P does not substantially contain the structural unit B represented by formula (1). The precursor polymer P may contain a structural unit that does not fall under any of structural units A, B, and C.

[0132] The precursor polymer P is preferably a polymer in which the number of structural units A is 0 to 99% and the total number of structural units C is 1 to 100%, relative to 100% in total of the structural units A and C, and more preferably a polymer in which the number of structural units A is 70 to 99% and the total number of structural units C is 1 to 30%.

[0133] Examples of methods for forming the structural unit B in the polymer 1 include reacting the structural unit C contained in the precursor polymer P with a compound α, polymerizing a monomer that serves as a raw material for the structural unit B, or copolymerizing ethylene with a monomer that serves as a raw material for the structural unit B. The alkyl group of the compound α is preferably a linear alkyl group. Note that a polymerization initiator such as an azo compound may be used in the method of polymerizing the monomer. Examples of the azo compound include azobisisobutyronitrile.

[0134] Examples of the precursor polymer P include the following: acrylic acid polymers, methacrylic acid polymers, vinyl alcohol polymers, methyl acrylate polymers, ethyl acrylate polymers, n-propyl acrylate polymers, n-butyl acrylate polymers, methyl methacrylate polymers, ethyl methacrylate polymers, n-propyl methacrylate polymers, n-butyl methacrylate polymers, vinyl formate polymers, vinyl acetate polymers, vinyl propionate polymers, vinyl (n-butylate) polymers, methyl vinyl ether polymers, ethyl vinyl ether polymers, n-propyl vinyl ether polymers, n-butyl vinyl ether polymers, maleic anhydride polymers, glycidyl acrylate polymers, glycidyl methacrylate polymers, 3-(dimethylamino)propyl acrylate polymers, 3-(dimethylamino)propyl methacrylate polymers, ethylene-acrylic acid copolymers, ethylene-methacrylic acid copolymers, ethylene-vinyl alcohol copolymers, ethylene-methyl acrylate copolymers, ethylene- ethyl acrylate copolymer, ethylene-n-propyl acrylate copolymer, ethylene-n-butyl acrylate copolymer, ethylene-methyl methacrylate copolymer, ethylene-ethyl methacrylate copolymer, ethylene-n-propyl methacrylate copolymer, ethylene-n-butyl methacrylate copolymer, ethylene-vinyl formate copolymer, ethylene-vinyl acetate copolymer, ethylene-vinyl propionate copolymer, ethylene-vinyl (n-butylate) copolymer, ethylene-methyl vinyl ether copolymer, ethylene-ethyl vinyl ether copolymer, ethylene-n-propyl vinyl ether copolymer, ethylene-n-butyl vinyl ether copolymer, ethylene-maleic anhydride copolymer, ethylene-glycidyl acrylate copolymer, ethylene-glycidyl methacrylate copolymer, ethylene-3-(dimethylamino)propyl acrylate copolymer, and ethylene-3-(dimethylamino)propyl methacrylate copolymer.

[0135] Said C １４～３０Examples of alcohols having a straight-chain alkyl group include n-tetradecyl alcohol, n-pentadecyl alcohol, n-hexadecyl alcohol, n-heptadecyl alcohol, n-octadecyl alcohol, n-nonadecyl alcohol, n-eicosyl alcohol, n-heneicosyl alcohol, n-docosyl alcohol, n-tricosyl alcohol, n-tetracosyl alcohol, n-pentacosyl alcohol, n-hexacosyl alcohol, n-heptacosyl alcohol, n-octacosyl alcohol, n-nonacosyl alcohol, and n-triacontyl alcohol.

[0136] Said C １４～３０ Examples of alcohols having a branched alkyl group include isotetradecyl alcohol, isopentadecyl alcohol, isohexadecyl alcohol, isoheptadecyl alcohol, isooctadecyl alcohol, isononadecyl alcohol, isoeicosyl alcohol, isoheneicosyl alcohol, isodocosyl alcohol, isotricosyl alcohol, isotetracosyl alcohol, isopentacosyl alcohol, isohexacosyl alcohol, isoheptacosyl alcohol, isooctacosyl alcohol, isononacosyl alcohol, and isotriacontyl alcohol.

[0137] Said C １４～３０ Examples of amines having a linear alkyl group include n-tetradecylamine, n-pentadecylamine, n-hexadecylamine, n-heptadecylamine, n-octadecylamine, n-nonadecylamine, n-eicosylamine, n-heneicosylamine, n-docosylamine, n-tricosylamine, n-tetracosylamine, n-pentacosylamine, n-hexacosylamine, n-heptacosylamine, n-octacosylamine, n-nonacosylamine, and n-triacontylamine.

[0138] Said C １４～３０Examples of amines having a branched alkyl group include isotetradecylamine, isopentadecylamine, isohexadecylamine, isoheptadecylamine, isooctadecylamine, isononadecylamine, isoeicosylamine, isoheneicosylamine, isodocosylamine, isotricosylamine, isotetracosylamine, isopentacosylamine, isohexacosylamine, isoheptacosylamine, isooctacosylamine, isononacosylamine, and isotriacontylamine.

[0139] Said C １４～３０ Examples of alkyl halides having a straight-chain alkyl group include n-tetradecyl iodide, n-pentadecyl iodide, n-hexadecyl iodide, n-heptadecyl iodide, n-octadecyl iodide, n-nonadecyl iodide, n-eicosyl iodide, n-heneicosyl iodide, n-docosyl iodide, n-tricosyl iodide, n-tetracosyl iodide, n-pentacosyl iodide, n-hexacosyl iodide, n-heptacosyl iodide, n-octacosyl iodide, n-nonacosyl iodide, and n-triacontyl iodide.

[0140] Said C １４～３０ Examples of alkyl halides having a branched alkyl group include isotetradecyl iodide, isopentadecyl iodide, isohexadecyl iodide, isoheptadecyl iodide, isooctadecyl iodide, isononadecyl iodide, isoeicosyl iodide, isoheneicosyl iodide, isodocosyl iodide, isotricosyl iodide, isotetracosyl iodide, isopentacosyl iodide, isohexacosyl iodide, isoheptacosyl iodide, isooctacosyl iodide, isononacosyl iodide, and isotriacontyl iodide.

[0141] Said C １４～３０Examples of carboxylic acids having a linear alkyl group include n-tetradecanoic acid, n-pentadecanoic acid, n-hexadecanoic acid, n-heptadecanoic acid, n-octadecanoic acid, n-nonadecanoic acid, n-eicosanoic acid, n-heneicosanoic acid, n-docosanoic acid, n-tricosanoic acid, n-tetracosanoic acid, n-pentacosanoic acid, n-hexacosanoic acid, n-heptacosanoic acid, n-octacosanoic acid, n-nonacosanoic acid, and n-triacontanoic acid.

[0142] Said C １４～３０ Examples of carboxylic acids having a branched alkyl group include isotetradecanoic acid, isopentadecanoic acid, isohexadecanoic acid, isoheptadecanoic acid, isooctadecanoic acid, isononadecanoic acid, isoeicosanoic acid, isoheneicosanoic acid, isodocosanoic acid, isotricosanoic acid, isotetracosanoic acid, isopentacosanoic acid, isohexacosanoic acid, isoheptacosanoic acid, isooctacosanoic acid, isononacosanoic acid, and isotriacontanoic acid.

[0143] Said C １４～３０ Examples of carboxylic acid amides having a linear alkyl group include n-tetradecanoic acid amide, n-pentadecanoic acid amide, n-hexadecanoic acid amide, n-heptadecanoic acid amide, n-octadecanoic acid amide, n-nonadecanoic acid amide, n-eicosanoic acid amide, n-heneicosanoic acid amide, n-docosanoic acid amide, n-tricosanoic acid amide, n-tetracosanoic acid amide, n-pentacosanoic acid amide, n-hexacosanoic acid amide, n-heptacosanoic acid amide, n-octacosanoic acid amide, n-nonacosanoic acid amide, and n-triacontanoic acid amide.

[0144] Said C １４～３０Examples of carboxylic acid amides having a branched alkyl group include isotetradecanoic acid amide, isopentadecanoic acid amide, isohexadecanoic acid amide, isoheptadecanoic acid amide, isooctadecanoic acid amide, isononadecanoic acid amide, isoeicosanoic acid amide, isoheneicosanoic acid amide, isodocosanoic acid amide, isotricosanoic acid amide, isotetracosanoic acid amide, isopentacosanoic acid amide, isohexacosanoic acid amide, isoheptacosanoic acid amide, isooctacosanoic acid amide, isononacosanoic acid amide, and isotriacontanoic acid amide.

[0145] Said C １４～３０ Examples of carboxylic acid halides having a linear alkyl group include n-tetradecanoic acid chloride, n-pentadecanoic acid chloride, n-hexadecanoic acid chloride, n-heptadecanoic acid chloride, n-octadecanoic acid chloride, n-nonadecanoic acid chloride, n-eicosanoic acid chloride, n-heneicosanoic acid chloride, n-docosanoic acid chloride, n-tricosanoic acid chloride, n-tetracosanoic acid chloride, n-pentacosanoic acid chloride, n-hexacosanoic acid chloride, n-heptacosanoic acid chloride, n-octacosanoic acid chloride, n-nonacosanoic acid chloride, and n-triacontanoic acid chloride.

[0146] Said C １４～３０ Examples of carboxylic acid halides having a branched alkyl group include isotetradecanoic acid chloride, isopentadecanoic acid chloride, isohexadecanoic acid chloride, isoheptadecanoic acid chloride, isooctadecanoic acid chloride, isononadecanoic acid chloride, isoeicosanoic acid chloride, isoheneicosanoic acid chloride, isodocosanoic acid chloride, isotricosanoic acid chloride, isotetracosanoic acid chloride, isopentacosanoic acid chloride, isohexacosanoic acid chloride, isoheptacosanoic acid chloride, isooctacosanoic acid chloride, isononacosanoic acid chloride, and isotriacontanoic acid chloride.

[0147] Said C １４～３０Examples of carbamic acids having a straight-chain alkyl group include n-tetradecylcarbamic acid, n-pentadecylcarbamic acid, n-hexadecylcarbamic acid, n-heptadecylcarbamic acid, n-octadecylcarbamic acid, n-nonadecylcarbamic acid, n-eicosylcarbamic acid, n-heneicosylcarbamic acid, n-docosylcarbamic acid, n-tricosylcarbamic acid, n-tetracosylcarbamic acid, n-pentacosylcarbamic acid, n-hexacosylcarbamic acid, n-heptacosylcarbamic acid, n-octacosylcarbamic acid, n-nonacosylcarbamic acid, and n-triacontylcarbamic acid.

[0148] Said C １４～３０ Examples of carbamic acids having a branched alkyl group include isotetradecylcarbamic acid, isopentadecylcarbamic acid, isohexadecylcarbamic acid, isoheptadecylcarbamic acid, isooctadecylcarbamic acid, isononadecylcarbamic acid, isoeicosylcarbamic acid, isoheneicosylcarbamic acid, isodocosylcarbamic acid, isotricosylcarbamic acid, isotetracosylcarbamic acid, isopentacosylcarbamic acid, isohexacosylcarbamic acid, isoheptacosylcarbamic acid, isooctacosylcarbamic acid, isononacosylcarbamic acid, and isotriacontylcarbamic acid.

[0149] Said C １４～３０ Examples of alkyl ureas having a straight-chain alkyl group include n-tetradecyl urea, n-pentadecyl urea, n-hexadecyl urea, n-heptadecyl urea, n-octadecyl urea, n-nonadecyl urea, n-eicosyl urea, n-heneicosyl urea, n-docosyl urea, n-tricosyl urea, n-tetracosyl urea, n-pentacosyl urea, n-hexacosyl urea, n-heptacosyl urea, n-octacosyl urea, n-nonacosyl urea, and n-triacontyl urea.

[0150] Said C １４～３０Examples of alkyl ureas having a branched alkyl group include isotetradecyl urea, isopentadecyl urea, isohexadecyl urea, isoheptadecyl urea, isooctadecyl urea, isononadecyl urea, isoeicosyl urea, isoheneicosyl urea, isodocosyl urea, isotricosyl urea, isotetracosyl urea, isopentacosyl urea, isohexacosyl urea, isoheptacosyl urea, isooctacosyl urea, isononacosyl urea, and isotriacontyl urea.

[0151] Said C １４～３０ Examples of isocyanates having a linear alkyl group include n-tetradecyl isocyanate, n-pentadecyl isocyanate, n-hexadecyl isocyanate, n-heptadecyl isocyanate, n-octadecyl isocyanate, n-nonadecyl isocyanate, n-eicosyl isocyanate, n-heneicosyl isocyanate, n-docosyl isocyanate, n-tricosyl isocyanate, n-tetracosyl isocyanate, n-pentacosyl isocyanate, n-hexacosyl isocyanate, n-heptacosyl isocyanate, n-octacosyl isocyanate, n-nonacosyl isocyanate, and n-triacontyl isocyanate.

[0152] Said C １４～３０ Examples of isocyanates having a branched alkyl group include isotetradecyl isocyanate, isopentadecyl isocyanate, isohexadecyl isocyanate, isoheptadecyl isocyanate, isooctadecyl isocyanate, isononadecyl isocyanate, isoeicosyl isocyanate, isoheneicosyl isocyanate, isodocosyl isocyanate, isotricosyl isocyanate, isotetracosyl isocyanate, isopentacosyl isocyanate, isohexacosyl isocyanate, isoheptacosyl isocyanate, isooctacosyl isocyanate, isononacosyl isocyanate, and isotriacontyl isocyanate.

[0153] When the precursor polymer P contains a structural unit A derived from ethylene, the product of the reactivity ratios r1×r2, where r1 is the reactivity ratio of ethylene used as a raw material in the production of the precursor polymer P and r2 is the reactivity ratio of the monomer that forms the structural unit C, is preferably 0.5 to 5.0, and more preferably 0.5 to 3.0, so that a molded article containing the polymer 1 derived from the precursor polymer P has good shape retention.

[0154] The reactivity ratio r1 of ethylene is a value defined as r1 = k11 / k12, where k11 is the reaction rate at which ethylene bonds to a polymer having a terminal structural unit A, and k12 is the reaction rate at which a monomer forming structural unit C bonds to a polymer having a terminal structural unit A, during copolymerization of ethylene with a monomer forming structural unit C. This reactivity ratio r1 is an index that represents whether a polymer having a terminal structural unit A reacts more readily with ethylene or with the monomer forming structural unit C, during copolymerization of ethylene with a monomer forming structural unit C. The larger r1 is, the more easily a polymer having a terminal structural unit A reacts with ethylene, and therefore the more easily a chain of structural unit A is formed.

[0155] The reactivity ratio r2 of the monomer that forms the structural unit C is a value defined as r2 = k22 / k21, where k21 is the reaction rate at which ethylene bonds to a polymer that has the structural unit C at its terminal, and k22 is the reaction rate at which the monomer that forms the structural unit C bonds to a polymer that has the structural unit C at its terminal, during copolymerization of ethylene with the monomer that forms the structural unit C. This reactivity ratio r2 is an index that represents whether a polymer that has the structural unit C at its terminal reacts more readily with ethylene or the monomer that forms the structural unit C during copolymerization of ethylene with the monomer that forms the structural unit C. The larger r2 is, the more easily a polymer that has the structural unit C at its terminal reacts with the monomer that forms the structural unit C, and therefore the more easily a chain of structural units C is formed.

[0156] The product of the reactivity ratios r1 × r2 is calculated by the method described in the literature "Kakugo, M.; Naito, Y.; Mizunuma, K.; Miyatake, T. Macromolecules, 1982, 15, 1150." In the present invention, the product of the reactivity ratios r1 × r2 is calculated by the method described in the literature "Kakugo, M.; Naito, Y.; Mizunuma, K.; Miyatake, T. Macromolecules, 1982, 15, 1150."１３ The ratio r1×r2 can be obtained by substituting the fractions of each of the diads AA, AC, and CC of the structural unit A and the structural unit C calculated from the C nuclear magnetic resonance spectrum into the following formula: r1×r2=AA[CC / (AC / 2)] ２ ]

[0157] The product of reactivity ratios r1 × r2 is an index representing the monomer sequence distribution of a copolymer. The closer the product of reactivity ratios r1 × r2 is to 1, the more random the monomer sequence distribution of the copolymer. The closer the product of reactivity ratios r1 × r2 is to 0, the more alternating the monomer sequence distribution of the copolymer. The greater the product of reactivity ratios r1 × r2 is to 1, the more block the monomer sequence distribution of the copolymer.

[0158] The melt flow rate (MFR) of the precursor polymer P, measured in accordance with JIS K7210 at a temperature of 190°C and a load of 21 N, is preferably 0.1 to 500 g / 10 min or less, more preferably 1 to 100 g / 10 min or less, and even more preferably 5 to 50 g / 10 min or less.

[0159] Examples of methods for producing the precursor polymer P include coordination polymerization, cationic polymerization, anionic polymerization, and radical polymerization, with radical polymerization being preferred, and radical polymerization under high pressure being more preferred.

[0160] The temperature at which the precursor polymer P and the compound α are reacted is usually 40 to 250°C. This reaction may be carried out in the presence of a solvent. Examples of solvents include hexane, heptane, octane, nonane, decane, toluene, and xylene. If by-products are produced in this reaction, the reaction may be carried out while distilling off the by-products under reduced pressure in order to promote the reaction. Alternatively, the by-products may be azeotroped with the solvent, the vaporized by-products and the solvent may be cooled, the distillate containing the by-products and the solvent may be separated into a by-product layer and a solvent layer, and only the recovered solvent layer may be returned to the reaction system as a reflux liquid.

[0161] Furthermore, the reaction of the precursor polymer P with the compound α may be carried out while melt-kneading the precursor polymer P with the compound α. If by-products are generated when the precursor polymer P and the compound α are reacted while melt-kneading, the reaction may be carried out while distilling off the by-products under reduced pressure in order to promote the reaction. Examples of melt-kneading devices used for melt-kneading include single-screw extruders, twin-screw extruders, and Banbury mixers. The temperature of the melt-kneading device is preferably 100 to 250°C.

[0162] When reacting the precursor polymer P with the compound α, a catalyst may be added to promote the reaction. Examples of the catalyst include alkali metal salts and Group 4 metal complexes. Examples of alkali metal salts include alkali metal hydroxides such as lithium hydroxide, sodium hydroxide, and potassium hydroxide, and alkali metal alkoxides such as lithium methoxide and sodium methoxide. Examples of Group 4 metal complexes include tetra(isopropyl) orthotitanate, tetra(n-butyl) orthotitanate, and tetraoctadecyl orthotitanate. The amount of catalyst added is preferably 0.01 to 50 parts by weight, and more preferably 0.01 to 5 parts by weight, per 100 parts by weight of the total amount of the precursor polymer P and the compound α used in the reaction.

[0163] Polymer 1 preferably contains a structural unit A derived from ethylene so that the shape retention of the molded article of the present invention at a temperature equal to or higher than the peak melting temperature of Polymer 1 and the molding processability of a composition containing Polymer 1 are good.

[0164] Polymer 1 may form a mixture with unreacted compound α or a catalyst added to promote the reaction. The content of unreacted compound α in the mixture is preferably 3 parts by weight or less based on 100 parts by weight of the polymer.

[0165] Polymer 1 may be a crosslinked polymer or a non-crosslinked polymer.

[0166] In one embodiment, polymer 1 is a non-crosslinked polymer (hereinafter sometimes referred to as polymer α).

[0167] In one embodiment, the gel fraction of the polymer α is 5% by weight or more.

[0168] Polymer α is a polymer in which the total number of the structural units A, B, and C is preferably 90% or more, more preferably 95% or more, and even more preferably 100%, relative to the total number of all structural units contained in the polymer (100%).

[0169] In one embodiment, polymer 1 and / or polymer 2 described below are crosslinked. That is, at least a portion of the molecules of polymer 1 and polymer 2 are linked intermolecularly by a covalent bond. Note that "polymer 1 is crosslinked" refers to either or both of the following: polymer 1 molecules are linked intermolecularly by a covalent bond; and polymer 1 and a polymer different from polymer 1 (which may be polymer 2 or a polymer other than polymers 1 and 2) are linked intermolecularly by a covalent bond.

[0170] Examples of methods for crosslinking a polymer include a method of crosslinking by irradiation with ionizing radiation and a method of crosslinking by using an organic peroxide.

[0171] When a polymer is irradiated with ionizing radiation to crosslink it, the polymer α, which has been previously molded into a desired shape, is usually irradiated with ionizing radiation. Known methods are used for molding, with extrusion molding, injection molding, and press molding being preferred. The molded article to be irradiated with ionizing radiation may be a molded article containing only polymer 1 as the polymer component, or may be a molded article of a composition containing polymer 1 and a different polymer. In the latter case, the polymer different from polymer 1 may be polymer 2 (sometimes referred to as base resin) described below. When the molded article contains the uncrosslinked polymer of the present invention and a base resin, the content of the uncrosslinked polymer of the present invention is preferably 1 to 99% by weight, with the total amount of the uncrosslinked polymer of the present invention and the base resin being 100% by weight.

[0172] Examples of ionizing radiation include α-rays, β-rays, γ-rays, electron beams, neutron beams, and X-rays, and cobalt-60 γ-rays or electron beams are preferred. When the polymer-containing molded article is in the form of a sheet, the ionizing radiation may be irradiated from at least one surface of the sheet-shaped molded article.

[0173] The irradiation with ionizing radiation is carried out using an ionizing radiation irradiation device, and the irradiation dose is usually 5 to 300 kGy, preferably 10 to 150 kGy. Polymer 1 can be obtained with a lower irradiation dose than usual to obtain a polymer with a high degree of crosslinking.

[0174] When obtaining a polymer 1 crosslinked by irradiation with ionizing radiation, a crosslinked polymer 1 with a higher degree of crosslinking can be obtained by including a crosslinking aid in the molded article irradiated with ionizing radiation. The crosslinking aid increases the degree of crosslinking of the polymer 1 and improves its mechanical properties, and a compound having multiple double bonds in the molecule is preferably used. Examples of crosslinking aids include N,N'-m-phenylene bismaleimide, toluylene bismaleimide, triallyl isocyanurate, triallyl cyanurate, p-quinone dioxime, nitrobenzene, diphenyl guanidine, divinylbenzene, ethylene glycol dimethacrylate, polyethylene glycol dimethacrylate, trimethylolpropane trimethacrylate, trimethylolpropane triacrylate, and allyl methacrylate. Furthermore, a combination of these crosslinking aids may be used.

[0175] The amount of the crosslinking aid added is preferably 0.01 to 4.0 parts by weight, more preferably 0.05 to 2.0 parts by weight, per 100 parts by weight of the total weight of the polymers contained in the molded article to be irradiated with ionizing radiation.

[0176] Examples of the crosslinking method using an organic peroxide include a method in which a composition containing the polymer α, polymer 2, and an organic peroxide is subjected to a known molding method involving heating to crosslink the polymer α. Known molding methods involving heating include extrusion molding, injection molding, and press molding.

[0177] When crosslinking is performed using an organic peroxide, an organic peroxide having a decomposition temperature equal to or higher than the flow initiation temperature of the resin component contained in the heat storage composition E is preferably used. Preferred organic peroxides include, for example, dicumyl peroxide, 2,5-dimethyl-2,5-di-tert-butylperoxyhexane, 2,5-dimethyl-2,5-di-tert-butylperoxyhexyne, α,α-di-tert-butylperoxyisopropylbenzene, and tert-butylperoxy-2-ethylhexyl carbonate.

[0178] Heat Storage Composition E As mentioned above, heat storage composition E comprises compound L and polymer 1.

[0179] Furthermore, the fusion enthalpy ΔHm of the heat storage composition E in the range of 10 to 60° C. is 30 J / g or more.

[0180] "Melting enthalpy ΔHm (J / g)" means the heat of fusion within a given temperature range in a melting curve. The melting enthalpy is measured according to the method described in the Examples.

[0181] Preferably, the ΔHm is 40 J / g or more, more preferably 50 J / g or more.

[0182] In one embodiment of the heat storage composition E, the ΔHSP calculated from the Hansen solubility parameters of the compound of polymer 1 and compound L is 3.5 or less.

[0183] ΔHSP is defined as in formula (H). where δ Ｄ１ , δ Ｐ１ and δ Ｈ１ are the components of the Hansen solubility parameter of polymer 1, δ Ｄ２ , δ Ｐ２ and δ Ｈ２ respectively represent the components of the Hansen solubility parameter of compound L. These parameters and ΔHSP are calculated according to the procedures described in the Examples.

[0184] A small ΔHSP means that polymer 1 and compound L are more likely to be compatible with each other, and ΔHSP is preferably 3.5 or less, more preferably 3.2 or less, and particularly preferably 3.0 or less.

[0185] If ΔHSP is extremely small, an amorphous structure is likely to be formed. If an amorphous structure is formed, there is a risk that the heat storage performance will decrease. Therefore, ΔHSP is more preferably 0.5 or more, even more preferably 1 or more, and particularly preferably 2 or more.

[0186] In one embodiment, the phase structure of the polymer component in the heat storage composition E satisfies any one of the following requirements: (d1) does not have an islands-in-a-sea structure; (d2) has an islands-in-a-sea structure in which the islands (dispersed phase) have a volume-average circular particle diameter Dv of 1.5 μm or less; or (d3) has an islands-in-a-sea structure in which the area ratio of the islands (dispersed phase) is 15% or less. The circular equivalent particle diameter Di (μm) and volume-average circular equivalent particle diameter Dv (μm) of the dispersed phase (islands in the islands-in-a-sea structure) contained in the polymer component in the heat storage composition E can be obtained according to the procedures described in the Examples.

[0187] When the polymer component in the heat storage composition E has an island-sea structure, the islands (dispersed phase) preferably have a volume-average circular particle diameter Dv of 1.5 μm or less and an area ratio of the islands (dispersed phase) of 15% or less. When the polymer component in the heat storage composition E has an island-sea structure, the islands (dispersed phase) have a higher content of polymer 1 than the sea (continuous phase). Dv is preferably 1.3 μm or less, more preferably 1.0 μm or less. When multiple types of dispersed phases are present, preferably at least one type of dispersed phase satisfies the above, and more preferably Dv calculated without distinguishing all types of dispersed phase satisfies the above.

[0188] When the polymer component in the heat storage composition E has an island-sea structure, the area ratio of the islands (dispersed phase) in the cross section of the polymer component in the heat storage composition E is preferably 15% or less, more preferably 13% or less, and even more preferably 10% or less. When multiple types of dispersed phases are present, it is preferable that at least one type of dispersed phase satisfies the above, and more preferably the total area calculated without distinguishing all types of dispersed phase satisfies the above.

[0189] When the heat storage composition E contains multiple polymers, it is preferable that polymer 1 is the most abundant among the polymers, and it is more preferable that polymer 1 is 50% by weight or more relative to 100% by weight of the total amount of polymers. Furthermore, the heat storage composition E may contain multiple types of polymer 1, and the above-mentioned "polymer 1 is the most abundant" and / or "polymer 1 is 50% by weight or more" may be satisfied for one type of polymer 1, or may be satisfied for the total amount of multiple polymers 1. Furthermore, examples of polymers contained other than polymer 1 include polymer 2, which will be described later. Note that when the polymers contained in the heat storage composition E are described in detail as a whole, they may also be referred to as polymer W.

[0190] The contents of compound L and polymer W in the heat storage composition E are preferably such that the content of compound L is 5 to 80 wt % and the content of polymer W is 20 to 95 wt %, where the total amount of compound L (when multiple compounds are present, all of them) and polymer W is 100 wt %. More preferably, the content of compound L is 5 to 50 wt %, and the content of polymer W is 50 to 95 wt %. Even more preferably, the content of compound L is 5 to 30 wt %, and the content of polymer W is 70 to 95 wt %. When the heat storage composition E is mainly composed of polymers, it is sometimes referred to as a "resin composition". The heat storage composition E is also sometimes referred to as a "heat storage material" or "heat storage material".

[0191] From the viewpoint of shape retention, the gel fraction of the thermal storage composition E is preferably 15% by weight or more, more preferably 20% by weight or more, even more preferably 40% by weight or more, and even more preferably 60% by weight or more. The gel fraction is calculated based on the total weight of the thermal storage composition E being 100% by weight. The gel fraction indicates the degree of crosslinking of the crosslinked polymer, and a high gel fraction means that the polymer contained in the composition or fiber has a more crosslinked structure and a stronger network structure is formed. A high gel fraction means that the composition or fiber has high shape retention and is less likely to deform. The gel fraction (% by weight) can be obtained by the procedure described in the examples.

[0192] From the viewpoint of suppressing bleeding, the gel fraction of the heat storage composition E is preferably 5% by weight or more, more preferably 10% by weight or more.

[0193] On the other hand, from the viewpoint of spinnability, the gel fraction of the heat storage composition E is preferably 15 wt % or less, more preferably 12 wt % or less, and even more preferably 10 wt % or less. When the gel fraction is low, the composition or fiber tends to have high spinnability.

[0194] Polymer 2 The heat storage composition E may contain a polymer other than Polymer 1, for example, Polymer 2, which will be described later.

[0195] In one embodiment, the melting peak temperature or glass transition temperature of polymer 2 is 60 to 120°C, preferably 70 to 110°C.

[0196] In one embodiment, polymer 2 may have the properties of polymer 1.

[0197] The heat storage composition E may contain two or more types of polymers 2.

[0198] Examples of polymer 2 having a melting peak temperature in the range of 60 to 120°C include high-pressure low-density polyethylene (LDPE), ethylene-α-olefin copolymer, ethylene-methyl methacrylate copolymer (EMMA), and ethylene-vinyl acetate copolymer (EVA).

[0199] Examples of the polymer 2 having a glass transition temperature in the range of 4060 to 120°C include cyclic olefin polymer (COP), cyclic olefin copolymer (COC), polystyrene (PS), polyvinyl chloride (PVC), acrylonitrile-styrene copolymer (AS), acrylonitrile-butadiene-styrene copolymer (ABS), polymethyl methacrylate (PMMA), polyvinyl alcohol (PVA), polyethylene terephthalate (PET), polyacrylonitrile (PAN), polyamide 6 (PA6), polyamide 66 (PA66), polycarbonate (PC), polyphenylene sulfide (PPS), and polyether ether ketone (PEEK).

[0200] The ethylene-α-olefin copolymer as polymer 2 is a copolymer having structural units derived from ethylene and structural units derived from an α-olefin. Examples of the α-olefin include propylene, 1-butene, 1-pentene, 1-hexene, 1-heptene, 1-octene, 4-methyl-1-pentene, and 4-methyl-1-hexene, and these may be used alone or in combination of two or more. The α-olefin is preferably C ４～８ and more preferably 1-butene, 1-hexene, or 1-octene.

[0201] The density of the high-pressure low-density polyethylene (LDPE) and ethylene-α-olefin copolymer as polymer 2 is 860 to 960 kg / m ３ is.

[0202] In one embodiment, polymer 2 has structural units A and C, where structural units A and C are as described for polymer 1. Polymer 2 is preferably a polymer in which the number of structural units A is 0 to 99% and the total number of structural units C is 1 to 100%, relative to 100% in total of structural units A and structural units C, and more preferably a polymer in which the number of structural units A is 70 to 99% and the total number of structural units C is 1 to 30%.

[0203] Examples of polymer 2 include the following: acrylic acid polymers, methacrylic acid polymers, vinyl alcohol polymers, methyl acrylate polymers, ethyl acrylate polymers, n-propyl acrylate polymers, n-butyl acrylate polymers, methyl methacrylate polymers, ethyl methacrylate polymers, n-propyl methacrylate polymers, n-butyl methacrylate polymers, vinyl formate polymers, vinyl acetate polymers, vinyl propionate polymers, vinyl (n-butylate) polymers, methyl vinyl ether polymers, ethyl vinyl ether polymers, n-propyl vinyl ether polymers, n-butyl vinyl ether polymers, maleic anhydride polymers, glycidyl acrylate polymers, glycidyl methacrylate polymers, 3-(dimethylamino)propyl acrylate polymers, 3-(dimethylamino)propyl methacrylate polymers, ethylene-acrylic acid copolymers, ethylene-methacrylic acid copolymers, ethylene-vinyl alcohol copolymers, ethylene-methyl acrylate copolymers, ethylene- ethyl acrylate copolymer, ethylene-n-propyl acrylate copolymer, ethylene-n-butyl acrylate copolymer, ethylene-methyl methacrylate copolymer, ethylene-ethyl methacrylate copolymer, ethylene-n-propyl methacrylate copolymer, ethylene-n-butyl methacrylate copolymer, ethylene-vinyl formate copolymer, ethylene-vinyl acetate copolymer, ethylene-vinyl propionate copolymer, ethylene-vinyl (n-butylate) copolymer, ethylene-methyl vinyl ether copolymer, ethylene-ethyl vinyl ether copolymer, ethylene-n-propyl vinyl ether copolymer, ethylene-n-butyl vinyl ether copolymer, ethylene-maleic anhydride copolymer, ethylene-glycidyl acrylate copolymer, ethylene-glycidyl methacrylate copolymer, ethylene-3-(dimethylamino)propyl acrylate copolymer, and ethylene-3-(dimethylamino)propyl methacrylate copolymer. Preferably, polymer 2 is an ethylene-based copolymer.Examples of ethylene copolymers include ethylene-unsaturated carboxylic acid copolymers, ethylene-vinyl alcohol copolymers, ethylene-unsaturated carboxylic acid ester copolymers, ethylene-vinyl carboxylate copolymers, and ethylene-alkyl vinyl ether copolymers. Examples of ethylene-unsaturated carboxylic acid copolymers include ethylene-acrylic acid copolymers, ethylene-methacrylic acid copolymers, and ethylene-maleic anhydride copolymers. Examples of ethylene-unsaturated carboxylic acid ester copolymers include ethylene-methyl acrylate copolymers, ethylene-ethyl acrylate copolymers, ethylene-n-propyl acrylate copolymers, ethylene-n-butyl acrylate copolymers, ethylene-methyl methacrylate copolymers, ethylene-ethyl methacrylate copolymers, ethylene-n-propyl methacrylate copolymers, ethylene-n-butyl methacrylate copolymers, ethylene-glycidyl acrylate copolymers, ethylene-glycidyl methacrylate copolymers, ethylene-3-(dimethylamino)propyl acrylate copolymers, and ethylene-3-(dimethylamino)propyl methacrylate copolymers. Examples of ethylene-vinyl carboxylate copolymers include ethylene-vinyl formate copolymer, ethylene-vinyl acetate copolymer, ethylene-vinyl propionate copolymer, and ethylene-vinyl (n-butylate) copolymer.

[0204] Polymer 2 is more preferably an ethylene-unsaturated carboxylic acid copolymer or an ethylene-unsaturated carboxylic acid ester copolymer, and even more preferably an ethylene-acrylic acid copolymer, an ethylene-methacrylic acid copolymer, an ethylene-vinyl alcohol copolymer, an ethylene-methyl acrylate copolymer, an ethylene-ethyl acrylate copolymer, an ethylene-n-propyl acrylate copolymer, an ethylene-n-butyl acrylate copolymer, an ethylene-methyl methacrylate copolymer, an ethylene-ethyl methacrylate copolymer, an ethylene-n-propyl methacrylate copolymer, or an ethylene-n-butyl methacrylate copolymer.

[0205] From the viewpoint of moldability, the polymer 2 preferably has a melt flow rate (MFR) of 0.1 to 100 g / 10 min, more preferably 0.1 to 30 g / 10 min, as measured in accordance with JIS K7210 at a temperature of 190°C and a load of 21 N.

[0206] The amount of ethylene structural units in the ethylene copolymer resin is preferably 50 to 99% by weight.

[0207] The heat storage composition E and the composite of the present invention described below may contain known additives as needed. Examples of such additives include inorganic fillers, organic fillers, flame retardants, antioxidants, weather resistance agents, ultraviolet absorbers, heat stabilizers, light stabilizers, lubricants, antiblocking agents, antistatic agents, antifogging agents, anti-dripping agents, crystal nucleating agents, pigments, dyes, adsorbents, metal chlorides, hydrotalcites, aluminates, silicone compounds, antibacterial agents, deodorizers, light-absorbing heat-generating materials, moisture-absorbing heat-generating materials, and far-infrared heat-generating materials.

[0208] In one embodiment, the temperature difference between the melting peak temperature of compound L contained in heat storage composition E and the melting peak temperature of polymer 1 is preferably 50°C or less, more preferably 30°C or less, even more preferably 20°C or less, and even more preferably 15°C or less.

[0209] When the heat storage composition E contains an additive, the additive may be blended in advance with one or more raw materials used in the manufacturing process of the heat storage composition E, or may be blended after manufacturing the heat storage composition E. When the manufacturing process includes a crosslinking step of a polymer, the additive may be blended with the polymer before crosslinking, or may be blended after crosslinking. When blending an additive into the heat storage composition E after manufacturing the heat storage composition E, the additive can be blended while melt-kneading the heat storage composition E.

[0210] The amount of these additives to be added is preferably 0.001 to 10 parts by weight, more preferably 0.005 to 5 parts by weight, and even more preferably 0.01 to 1 part by weight, per 100 parts by weight of the heat storage composition E.

[0211] Inorganic fillers include, for example, talc, calcium carbonate, and calcined kaolin.

[0212] Organic fillers include, for example, fibers, wood flour, and cellulose powder.

[0213] Examples of antioxidants include phenol-based antioxidants, sulfur-based antioxidants, phosphorus-based antioxidants, lactone-based antioxidants, and vitamin-based antioxidants.

[0214] Examples of the ultraviolet absorber include benzotriazole-based ultraviolet absorbers, tridiamine-based ultraviolet absorbers, anilide-based ultraviolet absorbers, and benzophenone-based ultraviolet absorbers.

[0215] Examples of the light stabilizer include hindered amine light stabilizers and benzoate light stabilizers.

[0216] Examples of pigments include titanium dioxide and carbon black.

[0217] Adsorbents include, for example, metal oxides such as zinc oxide and magnesium oxide.

[0218] Metal chlorides include, for example, iron chloride and calcium chloride.

[0219] Lubricants include, for example, fatty acids, higher alcohols, fatty amides, and fatty esters.

[0220] The heat storage composition E may be produced by first melt-kneading compound L and polymer 1, and, if necessary, other additives, etc., to prepare a high-concentration master batch, and then adding compound L and / or polymer 1 and melt-kneading the mixture to produce the composition.

[0221] The heat storage composition E may be produced by simply mixing compound L and polymer 1, and, if necessary, other additives, etc.; it may be produced by dissolving compound L in a solvent and then mixing polymer 1 and, if necessary, other additives, etc.; it may be produced by dissolving polymer 1 in a solvent and then mixing compound L and, if necessary, other additives, etc.; it may be produced by mixing compound L and polymer 1 with a solvent or a solution in which, if necessary, other additives, etc. are dissolved in a solvent; or it may be produced by mixing a solution in which compound L is dissolved in a solvent with a solution in which polymer 1 and, if necessary, other additives, etc. are dissolved in a solvent.

[0222] The heat storage composition E may be produced by first simply mixing compound L and polymer 1 with, if necessary, other additives, or dissolving them in a solvent and then mixing them to prepare a high-concentration master batch, and then adding compound L or polymer 1 as is or after dissolving it in a solvent if necessary, and mixing the mixture.

[0223] The heat storage composition E may be produced by mixing a monomer or prepolymer of polymer 1 with other additives as necessary, and then polymerizing the mixture. Examples of the polymerization method include bulk polymerization, cast polymerization, solution polymerization, suspension polymerization, and emulsion polymerization.

[0224] The heat storage composition E obtained by the above method can be used as a raw material to produce a polymer and a molded article.

[0225] Molded Article By molding the heat storage composition E, a molded article containing the composition can be produced.

[0226] The thermal storage composition E may be formed into any shape.

[0227] The method for molding the heat storage composition E is not particularly limited, and examples thereof include injection molding, extrusion molding, vacuum molding, pressure molding, press molding, transfer molding, cast molding, compression molding, laminate molding, inflation molding, calendar molding, blow molding, hollow molding, two-color molding, foam molding, insert molding, in-mold coating molding, rotational molding, hand lay-up molding, spray-up molding, matched die molding, vacuum injection molding, filament winding molding, centrifugal molding, and pultrusion molding.

[0228] Examples of the molded article of the present invention include injection molded articles, extrusion molded articles, vacuum molded articles, pressure molded articles, press molded articles, transfer molded articles, cast molded articles, compression molded articles, laminate molded articles, inflation molded articles, calendar molded articles, blow molded articles, hollow molded articles, two-color molded articles, foam molded articles, insert molded articles, in-mold coating molded articles, rotational molded articles, hand lay-up molded articles, spray-up molded articles, matched die molded articles, vacuum injection molded articles, filament winding molded articles, centrifugal molded articles, pultrusion molded articles, sheets, films, etc. The molded article may have a single layer structure or a multilayer structure.

[0229] When the heat storage composition E is extrusion molded, injection molded, vacuum molded, blow molded, or roll molded, from the viewpoint of molding processability, it is preferable that the melt flow rate (MFR) of the heat storage composition E measured in accordance with JIS K7210 at 230°C under a load of 2.16 kgf is 0.1 to 30 g / 10 min.

[0230] When the heat storage composition E is spun into fibers as described below, the melt flow rate (MFR) of the heat storage composition E measured in accordance with JIS K7210 at 230°C under a load of 2.16 kgf is preferably 0.1 to 1000 g / 10 min, more preferably 10 to 500 g / 10 min, and even more preferably 20 to 100 g / 10 min.

[0231] When the heat storage composition E is spun into fibers as described below, the composition is measured by a capillary rheometer at 270°C and a shear rate of 1.216 x 10 3 sec -1The shear viscosity η at 100 Pa·s is preferably 3 to 100 Pa·s, more preferably 4 to 80 Pa·s, and even more preferably 5 to 60 Pa·s.

[0232] The molded article of the present invention may be a multilayer structure comprising a layer of the composition of the present invention and a layer other than the layer. Examples of materials constituting the layer other than the layer of the composition of the present invention include resins, metals, paper, leather, etc. other than the composition of the present invention. The multilayer structure can be produced by laminating a layer of the composition of the present invention and a layer other than the layer.

[0233] Since the heat storage composition E has excellent moldability and shape retention, it can be in any shape, such as a spherical, angular (cubic), bead-like, cylindrical (pellet-like), powder, rod-like (stick-like), needle-like, fibrous (fiber-like), strand-like, thread-like, string-like, rope-like, cord-like, plate-like, sheet-like, membrane-like (film-like), woven fabric-like, nonwoven fabric-like, box-like (capsule-like), foam-like, and any three-dimensional shape, and the shape can be selected depending on the purpose of use.

[0234] Furthermore, when the thermal storage composition E is in the form of a sphere, a cube, a bead, a cylinder (pellet), or a powder, the thermal storage composition E may form a core-shell structure in which the thermal storage composition E is covered with a material different from the thermal storage composition E (hereinafter, sometimes referred to as "material D"), or a core-shell structure in which material D is covered with the thermal storage composition E. Note that material D is, for example, an organic compound, a polymer, a metal, or an inorganic compound other than a metal. Material D may also be a thermal functional material, which will be described later.

[0235] Furthermore, when the heat storage composition E is rod-shaped (stick-shaped), needle-shaped, fibrous (fiber-shaped), strand-shaped, thread-shaped, string-shaped, rope-shaped, or cord-shaped, it may form a core-sheath structure in which the heat storage composition E is covered with material D, or a core-sheath structure in which material D is covered with the heat storage composition E.

[0236] Furthermore, when the heat storage composition E is in the form of a plate, sheet, membrane (film), woven fabric, nonwoven fabric, box, or capsule, it may form a laminated structure in which the heat storage composition E is covered on both sides or one side with material D, or a laminated structure in which material D is covered on both sides or one side with heat storage composition E.

[0237] The foam-like molded article and the molded article having a shape different from the foam-like shape, or material D, may form a core-shell structure, a core-sheath structure, or a laminated structure.

[0238] The thermal storage composition E may be spun. The thermal storage composition E may be formed into, for example, fiber parts, fibers, filaments, threads, fabrics, nonwoven fabrics, batting, or building materials.

[0239] In one embodiment, the heat storage composition E is a heat storage material (fiber, building material, etc.). The cross-sectional shape of the heat storage material (fiber, building material, etc.) may be circular, irregular such as polygonal or multi-lobed, or hollow.

[0240] In one embodiment, the heat storage composition E is fibrous, and the single fiber fineness of the fiber is not particularly limited, but is preferably 1 dtex or more from the viewpoint of ease of fiberization, and is preferably 20 dtex or less from the viewpoint of fiber flexibility.

[0241] Examples of methods for producing such fibers include dry spinning, wet spinning, and melt spinning, with melt spinning being preferred. General spinning methods use chips containing a thermal storage composition as the raw material and mainly include two steps: a spinning step and a drawing step. Examples of spinning methods that are suitable for producing fibers containing the thermal storage composition E include a continuous polymerization spinning method in which the thermal storage composition E is spun continuously from the thermal storage composition production step without being chipped, a direct spinning and drawing method (spin draw method) in which the spinning and drawing steps are performed in one step, a high-speed spinning method that does not require a drawing step, a POY-DTY method in which a drawn yarn (DTY) is obtained through a false twisting step via a semi-drawn yarn (POY), and a spunbond method. These methods are more streamlined than the general spinning methods.

[0242] In one embodiment, the fiber containing the heat storage composition E may be a composite fiber. A composite fiber is a fiber formed by bonding two or more types of fibers made of different components together within a single yarn. Examples of composite fibers include core-sheath composite fibers, bonded composite fibers, splittable composite fibers, and islands-in-the-sea composite fibers.

[0243] The single fiber fineness of the composite fiber containing the heat storage composition E is not particularly limited, but is preferably 1 dtex or more from the viewpoint of ease of fiberization, and is preferably 20 dtex or less from the viewpoint of fiber flexibility.

[0244] Examples of the structure of the core-sheath type composite fiber include a core-sheath structure in which the heat storage composition E is covered with the material D, or a core-sheath structure in which the material D is covered with the heat storage composition E, and preferably a core-sheath structure in which the heat storage composition E is covered with the material D. The material D is preferably polymer 2, and more preferably polypropylene (PP), polyethylene terephthalate (PET), polytrimethylene terephthalate (PTT), polybutylene terephthalate (PBT), polyamide 6 (PA6), or polyamide 66 (PA66).

[0245] As a composite fiber having a core-sheath structure in which the thermal storage composition E is covered with the material D, a composite fiber having an area ratio of the core in the cross section in the fiber diameter direction of 10 to 90% is preferred. From the viewpoint of temperature regulating function, the area ratio of the core is preferably 10% or more, and from the viewpoint of fiber strength, the area ratio of the core is preferably 90% or less. When the core contains polypropylene, from the viewpoint of dyeability of the entire fiber, the area ratio of the core is preferably 20 to 60%.

[0246] Bonded composite fibers generally crimp due to differences in shrinkage rates, etc., but when the composite fiber is crimped spirally, the heat storage composition E may be on the inside of the spiral, or the material D may be on the inside of the spiral, and preferably the bonded composite fiber has the heat storage composition E on the inside of the spiral. Material D is preferably polymer 2, and more preferably polypropylene (PP), polyethylene terephthalate (PET), polytrimethylene terephthalate (PTT), polybutylene terephthalate (PBT), polyamide 6 (PA6), or polyamide 66 (PA66).

[0247] As for the structure of the splittable conjugate fiber, when the splittable conjugate fiber is composed of a central radial fiber and multiple surrounding wedge-shaped fibers, the heat storage composition E may be the central radial fiber, or the material D may be the central radial fiber, and preferably the splittable conjugate fiber is the central radial fiber of the heat storage composition E. Material D is preferably polymer 2, more preferably polypropylene (PP), polyethylene terephthalate (PET), polytrimethylene terephthalate (PTT), polybutylene terephthalate (PBT), polyamide 6 (PA6), or polyamide 66 (PA66). The splittable conjugate fiber may be split and opened by chemical treatment to obtain ultrafine fibers.

[0248] As for the structure of the islands-in-sea type composite fiber, the heat storage composition E may be the sea fiber, or the material D may be the sea fiber, and preferably the islands-in-sea type composite fiber is the sea fiber of the material D. Material D is preferably polymer 2, and more preferably polypropylene (PP), polyethylene terephthalate (PET), polytrimethylene terephthalate (PTT), polybutylene terephthalate (PBT), polyamide 6 (PA6), or polyamide 66 (PA66). In the islands-in-sea type composite fiber, the sea fiber may be removed by chemical treatment to obtain ultrafine fibers composed of a plurality of island fibers.

[0249] Examples of the form of the fiber containing the heat storage composition E include long fibers (multifilament, monofilament) and short fibers (staple). The long fibers (multifilament, monofilament) may be used as they are, or may be false-twisted to form a false-twisted yarn, or may be air-blended to form a blended yarn. The short fibers (staple) may be used as they are, or may be spun to form a spun yarn, or may be blended to form a blended yarn. They may be core-spun yarns in which long fibers are combined with short fibers, or may be twisted to form a doubled-twisted yarn, a twisted yarn, or a covered yarn.

[0250] The fiber containing the heat storage composition E may contain additives such as antioxidants, pigments, dyes, antibacterial agents, deodorizers, antistatic agents, flame retardants, inert fine particles, light-absorbing heat generating agents, moisture-absorbing heat generating agents, far-infrared heat generating agents, ultraviolet absorbers, ultraviolet scattering agents, infrared shielding agents, lubricants, oils, sizing agents, and other additives. The additives can be added during or after spinning.

[0251] The fabric or cloth containing the fibers containing the heat storage composition E may be any of woven fabrics, knitted fabrics, and nonwoven fabrics. Examples of weaves include plain weave, twill weave, satin weave, and variations thereof, dobby weave, jacquard weave, etc. Examples of knitting structures include weft knitting, warp knitting, and variations thereof.

[0252] The fabric or nonwoven fabric containing the fibers containing the heat storage composition E is not particularly limited in terms of basis weight, gauge, etc.

[0253] The woven fabric or nonwoven fabric containing the fiber containing the thermal storage composition E may consist solely of the fiber containing the thermal storage composition E, or may be woven or knitted with other fibers. Examples of other fibers include inorganic fibers such as carbon fiber, inorganic fiber, and metal fiber, purified fibers such as lyocell, regenerated fibers such as rayon, cupra, and polynosic, semi-synthetic fibers such as acetate, triacetate, and promix, synthetic fibers such as acrylic, acrylic fibers, vinylon, vinylidene, polyvinyl chloride, polyethylene, polychlor, aramid, polybutylene terephthalate (PBT), polytrimethylene terephthalate (PTT), polyamide 66 (PA66), and urethane, plant fibers such as cotton, cellulosic fibers, and hemp (flax, ramie, hemp, and jute), natural fibers such as wool, sheep's wool, animal hair (angora, cashmere, mohair, alpaca, camel, and the like), and silk, and feathers such as down and feathers. The proportion of the fibers containing the heat storage composition E used is not particularly limited, but is preferably 20 to 100% by weight.

[0254] A nonwoven fabric containing fibers containing the heat storage composition E may contain a heat-fusible binder fiber. The heat-fusible binder fiber is preferably a core-sheath or laminated composite fiber containing the heat storage composition E and a material having a melting point different from that of the heat storage composition E. The material having a melting point different from that of the heat storage composition E is preferably the polymer 2, and more preferably polypropylene (PP), polyethylene terephthalate (PET), polytrimethylene terephthalate (PTT), polybutylene terephthalate (PBT), polyamide 6 (PA6), or polyamide 66 (PA66).

[0255] When the heat-fusible binder fiber is used, its content is preferably 5 to 20% by weight of the total fibers of the nonwoven fabric.

[0256] The method for producing a nonwoven fabric containing fibers containing the heat storage composition E usually includes a web-forming step and a web-bonding step. Examples of the web-forming step include a dry method, a wet method, a spunbonding method, a meltblown method, and an airlaid method, and examples of the web-bonding step include a chemical bonding method, a thermal bonding method, a needle punching method, and a hydroentanglement method.

[0257] The fabrics and materials containing the fibers containing the heat storage composition E have a temperature regulating function, and therefore the fabrics and materials can be made smaller in basis weight and thinner, making them light and soft to the touch without impairing the fashionability of the clothing.

[0258] Thermofunctional materials include cool-to-the-touch materials, moisture-absorbing heat-generating materials, light-absorbing heat-generating materials, far-infrared radiation materials, heat-retaining materials, heat-shielding materials, water-absorbing and quick-drying materials, etc. Thermofunctional materials can be, for example, a part of fiber, fiber, filament, yarn, fabric (cloth / textile), nonwoven fabric, padding, or building material.

[0259] Examples of the cool-to-the-touch material include materials containing inorganic fillers, fibers with high thermal conductivity, and materials that quickly absorb and diffuse moisture to remove heat of vaporization. The type of fiber that exhibits a cool-to-the-touch feeling is not particularly limited, and examples thereof include refined fibers such as lyocell, regenerated fibers such as rayon, cupra, and polynosic, semi-synthetic fibers such as acetate, triacetate, and promix, synthetic fibers such as acrylic, acrylic fibers, vinylon, vinylidene, polyvinyl chloride, polyethylene, polychlor, aramid, polybutylene terephthalate (PBT), polytrimethylene terephthalate (PTT), polyamide 66 (PA66), and urethane, plant fibers such as cotton, cellulose fibers, and hemp (flax, ramie, hemp, and jute), natural fibers such as wool, sheep's wool, animal hair (angora, cashmere, mohair, alpaca, camel, and the like), and silk, and feathers such as down and feathers. Preferably, when made into a fabric, the cool touch evaluation value Qmax = 0.2 W / cm ２ The above-mentioned Qmax is measured using a Thermo Lab Tester KES-F7-11 manufactured by Kato Tech Co., Ltd. The hot plate of the tester, which has been heated to an ambient temperature +10°C (or 20°C), is placed on the fabric, and the maximum amount of heat transferred from the hot plate to the fabric is measured.

[0260] The inorganic filler is not particularly limited, and examples thereof include calcium carbonate such as light calcium carbonate and heavy calcium carbonate, barium carbonate, magnesium carbonate such as basic magnesium carbonate, calcium sulfate, barium sulfate, titanium dioxide, iron oxide, tin oxide, titanium oxide, zinc oxide, magnesium oxide, ferrite powder, zinc sulfide, zinc carbonate, aluminum nitride, silicon nitride, boron nitride, satin white, diatomaceous earth such as calcined diatomaceous earth, calcium silicate, aluminum silicate, magnesium silicate, amorphous silica, amorphous synthetic silica, silica such as colloidal silica, colloidal alumina, pseudoboehmite, aluminum hydroxide, magnesium hydroxide, alumina, alumina hydrate, lithopone, zeolite, hydrated halloysite, clay, hydrotalcite, aluminosilicate, talc, pyrophyllite, and saponite. smectites such as hectorite, sauconite, stevensite, montmorillonite, beidellite, and nontronite; micas such as vermiculite, phlogopite, biotite, zinnwaldite, muscovite, paragonite, celadonite, and glauconite; kaolins such as clinochlore, chamosite, nimite, pennantite, sudoite, donbassite, clintite, margarite, sulite, antigorite, lizardite, chrysotile, mesite, cronsteadite, berthierite, greenalite, garnierite, kaolinite, dickite, nacrite, and halloysite; mineral pigments such as delaminated kaolin, calcined kaolin, sepiolite, palygorskite, imogolite, allophane, hisingerite, penwithite, activated clay, bentonite, sericite, graphite, and carbon fiber. These may be used alone or in combination of two or more.

[0261] The shape of the inorganic filler is not particularly limited, but examples thereof include regular shapes such as spheres, needles, and plates, or irregular shapes.

[0262] Examples of the high thermal conductivity fibers include highly oriented polyethylene fibers and highly oriented polybenzoxazole fibers whose thermal conductivity has been increased by stretching and orientation.

[0263] The moisture-absorbing heat-generating material utilizes the exothermic reaction (heat of condensation) in which kinetic energy is converted into thermal energy. The moisture-absorbing heat-generating material generates heat upon absorbing moisture and releases moisture in low-humidity environments, thereby controlling temperature and humidity. The types of fibers that exhibit moisture absorption and heat generation are not particularly limited, but include, for example, refined fibers such as lyocell, regenerated fibers such as rayon, cupra, and polynosic, semi-synthetic fibers such as acetate, triacetate, and promix, synthetic fibers such as acrylic, acrylic fibers, vinylon, vinylidene, polyvinyl chloride, polyethylene, polychlor, aramid, polybutylene terephthalate (PBT), polytrimethylene terephthalate (PTT), polyamide 66 (PA66), and urethane, plant fibers such as cotton, cellulose fibers, and hemp (flax, ramie, hemp, and jute), natural fibers such as wool, sheep's wool, animal hair (angora, cashmere, mohair, alpaca, camel, and the like), and silk, and feathers such as down and feathers.

[0264] The light-absorbing and heat-generating material is a material that absorbs sunlight and converts it into thermal energy. Examples of light-absorbing and heat-generating fibers containing a light-absorbing and heat-generating material include fibers having a light-absorbing and heat-generating material, such as zirconium carbide or organic dyes, fixed to the interior or surface of the fiber, which are highly efficient at absorbing specific wavelengths of sunlight and converting them into thermal energy. Specific examples include, but are not limited to, refined fibers such as lyocell; regenerated fibers such as rayon, cupra, and polynosic; semi-synthetic fibers such as acetate, triacetate, and promix; synthetic fibers such as acrylic, acrylic fibers, vinylon, vinylidene, polyvinyl chloride, polyethylene, polychlar, aramid, polybutylene terephthalate (PBT), polytrimethylene terephthalate (PTT), polyamide 66 (PA66), and urethane; plant fibers such as cotton, cellulosic fibers, and hemp (flax, ramie, hemp, and jute); natural fibers such as wool, sheep's wool, animal hair (angora, cashmere, mohair, alpaca, camel, and the like), and silk; and feathers such as down and feathers.

[0265] The far-infrared emitting material is a material that radiates far-infrared rays when heated. Examples of far-infrared processed fibers containing a far-infrared emitting material include fibers having ceramics or the like with high far-infrared emitting properties fixed to the interior or surface of the fiber, and more specifically, although not particularly limited to, refined fibers such as lyocell, regenerated fibers such as rayon, cupra, and polynosic, semi-synthetic fibers such as acetate, triacetate, and promix, synthetic fibers such as acrylic, acrylic fibers, vinylon, vinylidene, polyvinyl chloride, polyethylene, polychlor, aramid, polybutylene terephthalate (PBT), polytrimethylene terephthalate (PTT), polyamide 66 (PA66), and urethane, plant fibers such as cotton, cellulose fibers, and hemp (flax, ramie, hemp, and jute), natural fibers such as wool, sheep's wool, animal hair (angora, cashmere, mohair, alpaca, camel, and the like), and silk, and feathers such as down and feathers.

[0266] The heat-retaining material is a material that traps a large amount of air with low thermal conductivity within the fabric and prevents the warm air from escaping. Examples of fibers that exhibit heat-retaining properties include, but are not limited to, hollow fibers and feathers. More specifically, examples include refined fibers such as lyocell, regenerated fibers such as rayon, cupra, and polynosic, semi-synthetic fibers such as acetate, triacetate, and promix, synthetic fibers such as acrylic, acrylic fibers, vinylon, vinylidene, polyvinyl chloride, polyethylene, polychlor, aramid, polybutylene terephthalate (PBT), polytrimethylene terephthalate (PTT), polyamide 66 (PA66), and urethane, plant fibers such as cotton, cellulosic fibers, and hemp (flax, ramie, hemp, and jute), natural fibers such as wool, sheep's wool, animal hair (angora, cashmere, mohair, alpaca, camel, and the like), and silk, as well as down and feathers. Preferably, feathers such as down and feathers are used.

[0267] The heat-shielding material is a material that blocks sunlight. The type of fiber that exhibits heat-shielding properties is not particularly limited, but examples include fibers kneaded with inorganic fine particles, and fibers and fabrics that reflect or scatter sunlight by making the fiber or fabric layered or hollow. More specific examples include refined fibers such as lyocell, regenerated fibers such as rayon, cupra, and polynosic, semi-synthetic fibers such as acetate, triacetate, and promix, synthetic fibers such as acrylic, acrylic fibers, vinylon, vinylidene, polyvinyl chloride, polyethylene, polychlar, aramid, polybutylene terephthalate (PBT), polytrimethylene terephthalate (PTT), polyamide 66 (PA66), and urethane, plant fibers such as cotton, cellulose fibers, and hemp (flax, ramie, hemp, jute), natural fibers such as wool, sheep's wool, animal hair (angora, cashmere, mohair, alpaca, camel, etc.), and silk, and feathers such as down and feathers.

[0268] The moisture-absorbing and quick-drying material is a material that quickly absorbs and dries sweat, keeping the inside of clothing dry and comfortable. The types of fibers that exhibit moisture-absorbing and quick-drying properties are not particularly limited, but include ultrafine fibers that utilize capillary action, fibers with a specially designed shape to increase the surface area, fibers that combine hydrophilic and hydrophobic properties, and fabrics that utilize changes in the crimp state of fibers due to humidity. More specifically, refined fibers such as lyocell, regenerated fibers such as rayon, cupra, and polynosic, semi-synthetic fibers such as acetate, triacetate, and promix, acrylic, acrylic fibers, vinylon ... Examples of suitable fibers include synthetic fibers such as urethane, polyvinyl chloride, polyethylene, polychlor, aramid, polybutylene terephthalate (PBT), polytrimethylene terephthalate (PTT), polyamide 66 (PA66), and urethane; plant fibers such as cotton, cellulose fibers, and hemp (flax, ramie, hemp, and jute); natural animal fibers such as wool, sheep's wool, animal hair (angora, cashmere, mohair, alpaca, camel, and the like), and silk; and feathers such as down and feathers.

[0269] The cross-sectional shape of the fibers containing the thermal functional material may be a circular cross-section, a modified cross-section such as a polygonal or multi-lobed cross-section, or a hollow cross-section.

[0270] The single yarn fineness of the fiber containing the thermal functional material is not particularly limited, but is preferably 1 dtex or more from the viewpoint of ease of fiberization, and is preferably 20 dtex or less from the viewpoint of fiber flexibility.

[0271] The fiber containing the thermal functional material may be a composite fiber. A composite fiber is a fiber formed by bonding two or more types of fibers made of different components within a single yarn. Examples of composite fibers include core-sheath composite fibers, bonded composite fibers, splittable composite fibers, and islands-in-the-sea composite fibers.

[0272] The single yarn fineness of the fiber containing the thermal functional material is not particularly limited, but is preferably 1 dtex or more from the viewpoint of ease of fiberization, and is preferably 20 dtex or less from the viewpoint of fiber flexibility.

[0273] Examples of the form of the fiber containing the thermal functional material include long fibers (multifilament, monofilament) and short fibers (staple). The long fibers (multifilament, monofilament) may be used as they are, or may be false-twisted to form a false-twisted yarn, or may be air-blended to form a blended yarn. The short fibers (staple) may be used as they are, or may be spun to form a spun yarn, or may be blended to form a blended yarn. They may be core-spun yarns in which long fibers are combined with short fibers, or may be twisted to form a doubled-twisted yarn, a twisted yarn, or a covered yarn.

[0274] The fiber containing the thermofunctional material may contain additives such as antioxidants, pigments, dyes, antibacterial agents, deodorizers, antistatic agents, flame retardants, inert fine particles, light-absorbing heat-generating materials, moisture-absorbing heat-generating materials, far-infrared heat-generating materials, ultraviolet absorbers, lubricants, ultraviolet scattering agents, infrared shielding agents, oils, sizing agents, and other additives. The additives can be added during or after spinning.

[0275] The composite of the present invention contains the heat storage composition E. It may further contain the thermal functional material. The composite may be formed into any shape, for example, a composite fiber, a filament, a thread, a fabric, a nonwoven fabric, or a filling.

[0276] The composite of the present invention may be a composite fiber. The composite fiber refers to a fiber formed by bonding two or more types of fibers made of different components together within a single yarn. Examples of the composite fiber include core-sheath composite fibers, bonded composite fibers, splittable composite fibers, and islands-in-sea composite fibers.

[0277] The single filament fineness of the composite fiber is not particularly limited, but is preferably 1 dtex or more from the viewpoint of ease of fiberization, and is preferably 20 dtex or less from the viewpoint of fiber flexibility.

[0278] Examples of the structure of the core-sheath type composite fiber include a core-sheath structure in which the heat storage composition E is covered with a thermal functional material, or a core-sheath structure in which the thermal functional material is covered with the heat storage composition E, and preferably a core-sheath structure in which the heat storage composition E is covered with the thermal functional material.

[0279] As the composite fiber having a core-sheath structure in which the heat storage composition E is covered with a thermal function material, a composite fiber having a core area ratio of 10 to 90% in the cross section in the fiber diameter direction is preferred. From the viewpoint of the durability of the thermal function, the core area ratio is preferably 10% or more, and from the viewpoint of fiber strength, the core area ratio is preferably 90% or less.

[0280] Bonded composite fibers generally crimp due to differences in shrinkage rates, etc., but when the composite fibers crimp in a spiral shape, the heat storage composition E may be on the inside of the spiral, or the thermal functional material may be on the inside of the spiral, and preferably, the bonded composite fibers have the heat storage composition E on the inside of the spiral.

[0281] As for the structure of the splittable conjugate fiber, when the splittable conjugate fiber is composed of a central radial fiber and a plurality of surrounding wedge-shaped fibers, the central radial fiber may be the heat storage composition E, or the thermal functional material may be the thermal functional material, and preferably the splittable conjugate fiber is the central radial fiber of the heat storage composition E. The splittable conjugate fiber may be split and opened by chemical treatment to form ultrafine fibers.

[0282] As for the structure of the islands-in-sea type composite fiber, the heat storage composition E may be the sea fiber, or the thermal functional material may be the sea fiber.

[0283] Examples of the form of the composite fiber containing (is) the composite of the present invention include long fibers (multifilament, monofilament) and short fibers (staple). The long fibers (multifilament, monofilament) may be used as they are, or may be false-twisted to form a false-twisted yarn, or may be air-blended to form a blended yarn. The short fibers (staple) may be used as they are, or may be spun to form a spun yarn, or may be blended to form a blended yarn. They may be core-spun yarns in which long fibers are combined with short fibers, or may be twisted to form a doubled-twisted yarn, a twisted yarn, or a covered yarn.

[0284] The composite of the present invention may contain additives such as antioxidants, pigments, dyes, antibacterial agents, deodorants, antistatic agents, flame retardants, inert fine particles, light-absorbing heat-generating materials, moisture-absorbing heat-generating materials, far-infrared heat-generating materials, ultraviolet absorbers, ultraviolet scattering agents, infrared shielding agents, lubricants, oils, sizing agents, and other additives. The additives can be added during or after spinning.

[0285] The fabrics and nonwoven fabrics spun from the composite fibers containing (are) the composite of the present invention may be woven fabrics, knitted fabrics, or nonwoven fabrics. Examples of weaves include plain weave, twill weave, satin weave, and variations thereof, dobby weave, jacquard weave, etc. Examples of knitted structures include weft knitting, warp knitting, and variations thereof.

[0286] The fabric or nonwoven fabric containing (is) the composite of the present invention may be used by blending, interweaving, interknitting, or intertwisting the fibers of the thermal storage composition E with the fibers of the thermal functional material.Furthermore, it may be used by interweaving or interknitting with other fibers. Other fibers include inorganic fibers such as carbon fiber, inorganic fiber, and metal fiber; refined fibers such as lyocell; regenerated fibers such as rayon, cupra, and polynosic; semi-synthetic fibers such as acetate, triacetate, and promix; synthetic fibers such as acrylic, acrylic fibers, vinylon, vinylidene, polyvinyl chloride, polyethylene, polychlor, aramid, polybutylene terephthalate (PBT), polytrimethylene terephthalate (PTT), polyamide 66 (PA66), and urethane; plant fibers such as cotton, cellulosic fibers, and hemp (flax, ramie, hemp, and jute); natural animal fibers such as wool, sheep's wool, animal hair (angora, cashmere, mohair, alpaca, camel, and the like), and silk; and feathers such as down and feathers. Weaves include plain weave, twill weave, satin weave, and variations thereof, dobby weave, and jacquard weave. The knitting structure may be a weft knitting, a warp knitting, or a variation thereof. The weaving structure or knitting structure may bias the heat storage material to one side so that the heat storage effect is more effective.

[0287] The fabric or material, which is a woven fabric or nonwoven fabric containing (or is) the composite of the present invention, is not particularly limited in terms of basis weight, gauge, etc.

[0288] Fabrics or nonwoven fabrics containing (are) the composite of the present invention may be laminated. One type of fabric or nonwoven fabric containing the heat storage composition E may be laminated, or two or more types of such fabrics or nonwoven fabrics may be laminated, or such fabrics or nonwoven fabrics may be laminated together with fabrics or nonwoven fabrics containing a thermal functional material. The lamination method and number of layers are not particularly limited. When laminated with a cooling-touch material, it is preferable that the cooling-touch material be on the skin side. When laminated with a heat-retaining material, it is preferable that the heat storage composition E be the intermediate layer or on the skin side.

[0289] The nonwoven fabric containing (is) the composite of the present invention may contain a heat-fusible binder fiber. The heat-fusible binder fiber is preferably a core-sheath or bonded composite fiber composed of the heat storage composition E and a material having a melting point different from that of the heat storage composition E. The material having a melting point different from that of the heat storage composition E is preferably the polymer 2, more preferably polypropylene (PP), polyethylene terephthalate (PET), polytrimethylene terephthalate (PTT), polybutylene terephthalate (PBT), polyamide 6 (PA6), or polyamide 66 (PA66).

[0290] When the heat-fusible binder fiber is used, its content is preferably 5 to 20% by weight of the total fibers of the nonwoven fabric.

[0291] The method for producing a nonwoven fabric containing (is) the composite of the present invention typically includes a web-forming step and a web-bonding step. The web-forming step includes a dry method, a wet method, a spunbonding method, a meltblown method, an airlaid method, etc., and the web-bonding step includes a chemical bonding method, a thermal bonding method, a needle punching method, a hydroentanglement method, etc.

[0292] When producing a filling containing (is) the composite of the present invention, fibers containing the thermal storage composition E may be mixed with fibers containing a thermal functional material. Other fibers may also be mixed. Examples of other fibers include inorganic fibers such as carbon fiber, inorganic fibers, and metal fibers; refined fibers such as lyocell; recycled fibers such as rayon, cupra, and polynosic; semi-synthetic fibers such as acetate, triacetate, and promix; synthetic fibers such as acrylic, acrylic fibers, vinylon, vinylidene, polyvinyl chloride, polyethylene, polychlor, aramid, polybutylene terephthalate (PBT), polytrimethylene terephthalate (PTT), polyamide 66 (PA66), and urethane; plant fibers such as cotton, cellulosic fibers, and hemp (flax, ramie, hemp, and jute); natural fibers such as wool, sheep's wool, animal hair (angora, cashmere, mohair, alpaca, camel, and the like), and silk; and feathers such as down and feathers. Furthermore, a filling containing a thermal functional material may be laminated with a woven or nonwoven fabric containing the heat storage composition E. The filling containing the composite of the present invention is a product in which the composite is filled inside a bag-shaped exterior body.

[0293] Since the fabric or cloth containing the composite of the present invention has a temperature regulating function, the fabric or cloth can have a smaller basis weight and a thinner thickness, so that it is light and soft to the touch and does not impair the fashionability of the clothing.

[0294] In one embodiment, the heat storage composition E has excellent heat storage performance, moldability, shape retention, and moisture permeability, and therefore can be suitably used, for example, as a product or component thereof that directly or indirectly requires heat or cold insulation performance. Note that the composition of the present invention, which has excellent heat storage performance, may also be used for an article that does not require heat storage performance.

[0295] Examples of products or components thereof that directly or indirectly require heat / cold insulation performance include building materials, furniture, interior goods, bedding, bathroom materials, vehicles, air conditioning equipment, electrical appliances, heat-insulating containers, clothing, daily necessities, agricultural materials, fermentation systems, thermoelectric conversion systems, and heat transfer media.

[0296] Examples of building materials include flooring, wall materials, wallpaper, ceiling materials, roofing materials, underfloor heating systems, tatami mats, doors, sliding doors, shutters, shoji screens, windows, and window frames.

[0297] When used as a flooring material, wall material, ceiling material, or roofing material, a laminate having, for example, a plate-shaped, sheet-shaped, or foam-shaped heat storage composition E and an insulating material containing material D and / or a heat shielding material containing material D can be suitably used in order to maintain a more constant indoor space temperature against fluctuations in the external environmental temperature.

[0298] Examples of the heat insulating material include polystyrene foam, polyurethane foam, acrylic resin foam, phenolic resin foam, polyethylene resin foam, foamed rubber, glass wool, rock wool, cellulose fiber, foamed ceramic, vacuum heat insulating material, and composites thereof.

[0299] Examples of the heat shielding material include aluminum plates, aluminum foils, aluminum powder-containing paints, ceramic powder paints, and composites thereof.

[0300] When used as a wall material, ceiling material, or roof material, in order to impart fire resistance, it is preferable to use, for example, a plate-shaped, sheet-shaped, or foam-shaped laminate of the heat storage composition E and a flame-retardant, semi-non-flammable, or non-flammable fire-resistant material containing the material D.

[0301] Examples of the fireproofing material include concrete, gypsum, wood-based cement, calcium silicate, glass, metal, intumescent fireproofing material, material containing a flame retardant, and composites thereof.

[0302] When used as a component of a floor heating system, a laminate having, for example, a plate-shaped, sheet-shaped, or foam-shaped heat storage composition E, an insulating material containing material D, and a sensible heat storage material containing material D can be suitably used in order to efficiently utilize the heat generated from heating elements such as heating cables, surface heaters, and hot water pipes to maintain room temperature.

[0303] Examples of the sensible heat storage material include concrete, mortar, concrete slab, and composites thereof.

[0304] When used as a tatami component, in order to maintain a more constant indoor temperature despite fluctuations in the external environmental temperature, it is possible to suitably use, for example, a laminate having a plate-shaped, sheet-shaped, or foam-shaped heat storage composition E, an insulating material containing material D, a tatami board containing material D, and a tatami facing containing material D. Furthermore, when used as a tatami board material, it is possible to suitably use a heat storage tatami board containing a mixture of heat storage composition E and wood fibers, and when used as a tatami facing material, it is possible to suitably use a heat storage tatami facing containing heat storage fibers that form a core-sheath structure with fibrous (fiber-like) or strand-like heat storage composition E and a tatami facing material containing material D.

[0305] When used as a door component, a sliding door component, or a storm shutter component, a laminate having, for example, a plate-, sheet-, or foam-shaped heat storage composition E, an insulating material containing material D, and a surface material containing material D can be suitably used in order to maintain a more constant room temperature in a room separated by the door, sliding door, or storm shutter.

[0306] When used as a component for a shoji screen, in order to maintain a more constant room temperature in the room separated by the shoji screen and to provide a certain degree of light transmittance, it is preferable to use, for example, a foamed or nonwoven heat storage composition E, or a laminate having shoji paper containing a foamed or nonwoven heat storage composition E and material D.

[0307] When used as a window component, in order to maintain a more constant indoor space temperature against fluctuations in the external environmental temperature and to provide a certain degree of light transmittance, it is preferable to use, for example, a laminate containing the foamed or nonwoven heat storage composition E and glass, polycarbonate, or polymethyl methacrylate.

[0308] When used as a window frame component, a laminate having, for example, a plate-shaped, sheet-shaped, or foam-shaped heat storage composition E and a metal window frame or a window frame made of a polymer other than polymer 1 can be suitably used in order to maintain a more constant indoor space temperature against fluctuations in the external environmental temperature, and to reduce the temperature difference between the room temperature and the window frame to prevent condensation.

[0309] Examples of furniture, interior items, and bedding include partition boards, blinds, curtains, carpets, futons, and mattresses.

[0310] When used as a component of a partition board, in order to maintain a more constant room temperature in a room separated by the partition board, it is preferable to use, for example, a laminate having a plate-shaped, sheet-shaped, or foam-shaped heat storage composition E, an insulating material containing material D, and a surface material containing material D.

[0311] When used as a blind component, in order to maintain a more constant indoor temperature against fluctuations in the external environmental temperature and to impart light-shielding performance, it is preferable to use, for example, a laminate having a plate- or sheet-shaped heat-shielding material containing the heat storage composition E and material D. For example, when the blind blade material is composed of a heat-shielding surface and a heat-storing surface as described above, it can be used with the heat-shielding surface facing outward in the summer and with the heat-storing surface facing outward during the day in the winter and inward at night, thereby controlling the amount of solar heat that flows into the building depending on the season and time of day, and reducing the power consumption of the air-conditioning equipment.

[0312] When used as curtains, carpets, or futons, in order to impart any desired texture or feel, it is possible to suitably use a heat storage woven fabric or heat storage nonwoven fabric containing, for example, a heat storage fiber that forms a core-sheath structure with a fibrous (fiber-like) or strand-like heat storage composition E and a fiber material containing material D.

[0313] When used as a carpet, a laminate having, for example, a plate-shaped, sheet-shaped, or foam-shaped heat storage composition E and a woven or nonwoven fabric containing fibers containing material D can be suitably used to impart any texture or feel.

[0314] When used as a mattress, for example, a foam-like heat storage composition E can be suitably used to impart flexibility.

[0315] Examples of bathroom materials include bathtub materials, bathtub lid materials, bathroom floor materials, bathroom wall materials, and bathroom ceiling materials.

[0316] When used as a bathtub material or bath cover material, in order to maintain a more constant temperature of the water in the bathtub despite fluctuations in the temperature in the bathroom, it is preferable to use, for example, a laminate having a plate-shaped, sheet-shaped, or foam-shaped heat storage composition E, an insulating material containing material D, and a surface material containing material D.

[0317] When used as a bathroom flooring material, bathroom wall material, or bathroom ceiling material, a laminate having, for example, a plate-shaped, sheet-shaped, or foam-shaped heat storage composition E, an insulating material containing material D, and a heat-shielding material containing material D can be suitably used in order to maintain a more constant bathroom temperature against fluctuations in the external environmental temperature.

[0318] Examples of vehicle components include engine warm-up systems, gasoline evaporation loss prevention devices (canisters), vehicle air conditioning, interior materials, components for containers of refrigerated vehicles, and components for containers of heated vehicles.

[0319] Examples of components for air conditioning equipment include heat storage materials for building thermal storage air conditioning systems, components for heat storage tanks for water thermal storage air conditioning systems, components for heat storage tanks for ice thermal storage air conditioning systems, heat transfer medium piping materials or their insulation materials, refrigerant piping materials or their insulation materials, and duct materials for heat exchange ventilation systems.

[0320] Examples of electrical appliances include: electronic devices such as televisions, Blu-ray recorder players, DVD recorder players, monitors, displays, projectors, rear projection televisions, component stereos, radio cassette players, digital cameras, digital video cameras, mobile phones, smartphones, laptop computers, desktop computers, tablet PCs, PDAs, printers, 3D printers, scanners, home game consoles, portable game consoles, electronic device storage batteries, and electronic device transformers; heated household appliances such as electric stoves, fan heaters, dehumidifiers, humidifiers, heated carpets, kotatsu tables, electric blankets, electric lap blankets, electric foot warmers, heated toilet seats, heated toilet seats with a washing function, irons, trouser presses, futon dryers, clothes dryers, hair dryers, hair irons, thermal massagers, thermal therapy devices, dishwashers, dish dryers, and dry-type food waste disposal machines; Heating cooking appliances such as induction cooking heaters, hot plates, microwave ovens, oven ranges, rice cookers, rice cake makers, bread makers, toasters, electronic proofers, electric pots, electric kettles, coffee makers, etc.; cooking appliances that generate frictional heat such as mixers, food processors, and rice polishers; and refrigerators and freezers, constant temperature and humidity refrigerators, milk refrigerators, brown rice refrigerators, vegetable refrigerators, refrigerated rice bins, refrigerated and freezer showcases, prefabricated refrigerators, prefabricated refrigerated showcases, hot and cold food delivery carts, wine cellars, food vending machines, bento warming cabinets, etc.

[0321] When used as a member of an electronic device, for example, a plate- or sheet-like heat storage composition E can be suitably used to protect the electronic components constituting the electronic device from heat generated by the electronic components. In particular, in the case of highly integrated electronic components and the like that generate a large amount of local heat, for example, a laminate having a plate- or sheet-like heat storage composition E and a high thermal conductivity material containing material D can be suitably used to efficiently absorb the heat generated from the heat generating element into the plate- or sheet-like heat storage composition E.

[0322] Examples of the highly thermally conductive material include carbon nanotubes, boron nitride nanotubes, graphite, copper, aluminum, boron nitride, aluminum nitride, aluminum oxide, magnesium oxide, and composites thereof.

[0323] When used as a component of an electronic device that is used in contact with the human body, a laminate having, for example, a plate- or sheet-shaped heat storage composition E and the housing material can be suitably used to prevent heat generated from the electronic components that make up the electronic device from being conducted to the human body through the housing that makes up the electronic device.

[0324] When used as a component of a heating-type household appliance, the heat storage composition E can be suitably used, for example, in the form of a plate or sheet, to protect other components of the heating-type household appliance from the heat generated by the heating device that constitutes the heating-type household appliance. Furthermore, in order to improve heat retention performance and reduce power consumption, for example, a laminate having the heat storage composition E in the form of a plate, sheet, or foam and an insulating material containing the material D can be suitably used.

[0325] When used as a component of a heating-type cooking appliance, the heat storage composition E can be suitably used, for example, in the form of a plate or sheet, to protect other components of the heating-type cooking appliance from the heat generated by the heating device that constitutes the heating-type cooking appliance. Furthermore, in order to improve heat retention performance and reduce power consumption, for example, a laminate having the heat storage composition E in the form of a plate, sheet, or foam and an insulating material containing the material D can be suitably used.

[0326] When used as a component of a cooking appliance that generates frictional heat, a laminate having, for example, a plate- or sheet-shaped heat storage composition E and a high thermal conductor containing material D can be suitably used to protect food from frictional heat.

[0327] When used as a component of a powered thermal insulation refrigerator, a laminate having, for example, a plate-shaped, sheet-shaped, or foam-shaped heat storage composition E and an insulating material containing material D and / or a heat-shielding material containing material D can be suitably used in order to maintain a more constant internal temperature against fluctuations in the external environmental temperature.

[0328] Examples of heat and cold insulation containers include heat and cold insulation containers for transporting and storing specimens and organs, heat and cold insulation containers for transporting and storing medicines and chemical substances, and heat and cold insulation containers for transporting and storing food. When used as a component of a heat and cold insulation container, a laminate having, for example, a plate-like, sheet-like, or foam-like heat storage composition E and a heat insulating material containing material D and / or a heat shielding material containing material D can be suitably used in order to maintain a more constant internal temperature against fluctuations in the external environmental temperature.

[0329] Examples of clothing include sleepwear, winter clothing, gloves, socks, sportswear, wetsuits, drysuits, heat-resistant protective clothing, and fire-resistant protective clothing. When used in clothing, in order to maintain a constant body temperature and impart a desired tactile feel, a heat-storing woven fabric or heat-storing nonwoven fabric containing heat-storing fibers that form a core-sheath structure with a fibrous (fiber-like) or strand-like fibrous material containing the heat-storing composition E and material D can be suitably used.

[0330] When used in wetsuits or drysuits, a laminate having, for example, the heat storage composition E in the form of a plate or sheet, the heat storage woven fabric or the heat storage nonwoven fabric, and an insulating material containing material D can be suitably used in order to keep body temperature more constant against cold water.

[0331] When used in heat-resistant protective clothing or fire-resistant protective clothing, in order to keep body temperature more constant against heat-generating elements and flames, it is preferable to use, for example, a laminate having the heat storage composition E in a plate or sheet form, the heat storage woven fabric or the heat storage nonwoven fabric, a heat insulating material containing material D, and a heat shielding material containing material D.

[0332] Examples of everyday items include tableware, lunch boxes, water bottles, thermoses, pocket warmers, hot water bottles, ice packs, and microwave-heatable heat packs.

[0333] When used as a component of tableware or lunch boxes, the heat storage composition E may be used as a laminate having, for example, a plate-shaped, sheet-shaped, or foam-shaped heat storage composition E and an insulating material containing material D in order to maintain the food temperature more constant relative to the external environmental temperature.

[0334] Examples of fermentation systems that ferment organic waste such as commercial or household food waste, sludge, livestock manure, or livestock and fishery residues, as well as plants and trees, to produce compost or biogas include bio-type food waste processors, fermenters for producing compost, and fermenters for producing biogas. When used as the fermentation system, a laminate having, for example, a plate-, sheet-, or foam-shaped heat storage composition E and an insulating material containing material D can be suitably used in order to maintain the temperature inside the tank constant at a temperature suitable for fermentation despite fluctuations in the external environmental temperature.

[0335] Examples of agricultural materials include films for greenhouses, agricultural heat-retaining sheets, hoses and pipes for irrigation, and agricultural electric mats for raising seedlings. When used as agricultural materials, a laminate having, for example, a plate-like, sheet-like, or foam-like heat storage composition E and an insulating material containing material D can be suitably used in order to maintain the temperature around agricultural crops at a constant temperature suitable for the growth of the crops despite fluctuations in the external environmental temperature.

[0336] The present invention will be described in more detail below with reference to examples and comparative examples, but the present invention is not limited to these examples.

[0337] [I] Amounts (number [mol %] and weight [wt %]) of structural unit A derived from ethylene and structural unit C derived from methyl acrylate contained in precursor polymer (ethylene-methyl acrylate copolymer) Nuclear magnetic resonance spectrum (hereinafter referred to as NMR spectrum) was measured using a nuclear magnetic resonance spectrometer (NMR) under the measurement conditions shown below. Next, the amounts (number [mol %] and weight [wt %]) of structural unit A and structural unit C were determined.

[0338] <Carbon Nuclear Magnetic Resonance (13C-NMR) Measurement Conditions> Apparatus: AVANCE III 600HD manufactured by Bruker Biospin Co., Ltd. Measurement probe: 10 mm cryoprobe Measurement solvent: mixed solution of 1,2-dichlorobenzene / 1,1,2,2-tetrachloroethane-d2 = 85 / 15 (volume ratio) Sample concentration: 100 mg / mL Measurement temperature: 135°C Measurement method: proton decoupling method Number of accumulations: 256 times Pulse width: 45 degrees Pulse repetition time: 4 seconds Measurement standard: tetramethylsilane

[0339] [II] Unreacted C １４～３０ The product obtained in the Reference Example is a mixture of polymer 1 and unreacted C １４～３０ The unreacted C contained in the product is a mixture of a compound having an alkyl group of １４～３０ The content of the compound having an alkyl group of the formula (I) was measured by gas chromatography (GC) by the following method. The content of the unreacted compound is a value when the total weight of Polymer 1 and the unreacted compound is taken as 100% by weight. [GC measurement conditions] GC apparatus: Shimadzu GC2014 Column: DB-5MS (60 m, 0.25 mmφ, 1.0 μm) Column temperature: The column kept at 40°C was heated to 300°C at a rate of 10°C / min, and then kept at 300°C for 40 minutes. Vaporization chamber / detector temperature: 300°C / 300°C (FID) Carrier gas: Helium Pressure: 220 kPa Total flow rate: 17.0 mL / min Column flow rate: 1.99 mL / min Purge flow rate: 3.0 mL / min Linear velocity: 31.8 cm / sec Injection method / split ratio: Split injection / 6:1 Injection volume: 1 μL Sample preparation method: 8 mg / mL (o-dichlorobenzene solution)

[0340] (II-1) Preparation of a calibration curve [Solution preparation] 5 mg of the standard sample was weighed into a 9 mL vial, and 100 mg of n-tridecane was weighed therein as an internal standard. 6 mL of o-dichlorobenzene was then added as a solvent to completely dissolve the sample, yielding a standard solution for preparing a calibration curve. Two more standard solutions were prepared in the same manner as above, except that the amounts of the standard were changed to 25 mg and 50 mg. [GC measurement] The standard solution for preparing a calibration curve was measured under the GC measurement conditions described in the previous section, and a calibration curve was prepared with the GC area ratio of the standard sample to the internal standard sample on the vertical axis and the weight ratio of the standard sample to the internal standard sample on the horizontal axis. The slope a of the calibration curve was determined.

[0341] (II-2) Measurement target (unreacted C) in the sample (product) １４～３０Measurement of the content of (compound having an alkyl group of the formula (I)) [Solution preparation] 50 mg of sample and 100 mg of n-tridecane were weighed into a 9 mL vial, and 6 mL of o-dichlorobenzene was added and the sample was completely dissolved at 80°C to obtain a sample solution. [GC measurement] The sample solution was measured under the GC measurement conditions described above, and the content PS of the analyte in the sample was calculated according to the following formula: PS: content (wt%) of the analyte in the sample WS: weight (mg) of the sample WIS: weight (mg) of the internal standard (IS) AS: peak area count of the analyte AIS: peak area count of the internal standard (IS) a: slope of the calibration curve of the analyte

[0342] [III] Method for evaluating physical properties of heat storage composition (III-1) Melting peak temperature (Tm, unit: ° C), glass transition temperature (Tg, unit: ° C), and fusion enthalpy (ΔHm, unit: J / g) observed within a temperature range of 10 to 60° C. Using a differential scanning calorimeter (manufactured by TA Instruments, DSC Q100), an aluminum pan containing a sample was measured under a nitrogen atmosphere under any of the following measurement conditions.

[0343] Measurement condition 1: An aluminum pan containing approximately 10 mg of sample is (1) held at 150°C for 5 minutes, then (2) cooled from 150°C to -80°C at a rate of 5°C / min, then (3) held at -80°C for 10 minutes, and then (4) heated from -80°C to approximately 150°C at a rate of 5°C / min.

[0344] Measurement condition 2: An aluminum pan containing approximately 5 mg of sample is (1) held at 150°C for 5 minutes, then (2) cooled from 150°C to -80°C at a rate of 5°C / min, then (3) held at -80°C for 10 minutes, and then (4) heated from -80°C to approximately 150°C at a rate of 5°C / min.

[0345] Measurement condition 3: An aluminum pan containing approximately 5 mg of sample is (1) held at 80°C for 5 minutes, then (2) cooled from 80°C to -80°C at a rate of 5°C / min, then (3) held at -80°C for 10 minutes, and then (4) heated from -80°C to approximately 80°C at a rate of 5°C / min.

[0346] Measurement condition 4: An aluminum pan containing approximately 5 mg of sample is (1) held at 150°C for 5 minutes, then (2) cooled from 150°C to -50°C at a rate of 5°C / min, then (3) held at -50°C for 5 minutes, and then (4) heated from -50°C to approximately 150°C at a rate of 5°C / min.

[0347] Measurement condition 5: An aluminum pan containing approximately 10 mg of sample is (1) held at 200°C for 5 minutes, then (2) cooled from 200°C to -80°C at a rate of 5°C / min, then (3) held at -80°C for 5 minutes, and then (4) heated from -80°C to approximately 200°C at a rate of 5°C / min.

[0348] The differential scanning calorimetry curve obtained by the calorimetry in step (4) under each measurement condition is taken as the melting curve. The melting curve is analyzed by a method in accordance with JIS K7121-1987 to obtain the melting peak temperature at which the melting endotherm is maximum. The glass transition temperature (midpoint glass transition temperature) is obtained by analyzing the melting curve measured according to the differential scanning calorimetry method described above by a method in accordance with JIS K7121-1987. The enthalpy of fusion ΔHm (J / g) is obtained by analyzing the portion of the melting curve within the temperature range of 10 to 60°C by a method in accordance with JIS K7122-1987.

[0349] (III-2) Melt flow rate (g / 10 min) The melt flow rate (MFR) is measured according to the method specified in JIS-K-7210. Unless otherwise specified, the measurement is carried out at a temperature of 230°C and a load of 2.16 kgf.

[0350] (III-3) Gel Fraction The gel fraction (wt%) is obtained by the following procedure. Approximately 500 mg of a measurement sample and an empty wire basket made of wire mesh (opening: 400 mesh) are weighed. The wire basket containing the measurement sample and 50 mL of xylene (in this example, special-grade xylene (a mixture of o-, m-, p-xylene and ethylbenzene, with a total weight of o-, m-, and p-xylene of 85 wt% or more) manufactured by Kanto Chemical Co., Inc.) are introduced into a 100 mL test tube, and extraction is performed by heating at 110°C for 6 hours. After extraction, the wire basket containing the extraction residue is removed from the test tube and dried under reduced pressure at 80°C for 3 hours in a vacuum dryer. The dried wire basket containing the extraction residue is weighed. The gel weight is calculated from the weight difference between the dried wire basket containing the extraction residue and the empty wire basket. The gel fraction (wt%) is calculated according to the following formula: Gel fraction = (gel weight / measurement sample weight) x 100

[0351] (III-4) Volume-average equivalent circular particle diameter and area ratio of the dispersed phase The volume-average equivalent circular particle diameter Dv (μm) and area ratio (%) of the dispersed phase contained in the composition of the present invention can be obtained by the following procedure. Polymer W, which is the composition of the present invention, is cut using a microtome at -70°C, stained with ruthenium tetroxide vapor at room temperature for about 3 days, and then ultrathin sections with a thickness of approximately 1,300 angstroms are prepared using a diamond knife at -70°C. The ultrathin sections are observed at a magnification of 15,000x using a transmission electron microscope (JEM-2100F manufactured by JEOL Ltd. was used in the examples). The observed surface was any surface of the kneaded material. Digital images (72 DPI) taken with a CCD camera at a magnification of 15,000x are imported into a computer, and the island phases are identified by visual judgment from the shade of the stain using image analysis software (A-zo-kun manufactured by Asahi Engineering Co., Ltd. was used in the examples). The analysis area of ​​one field of view is approximately 58 to 73 μm at 15,000x magnification. ２ Since the shape of the dispersed phase is irregular, the diameter of the circle (equivalent circle particle diameter Di (μm)) is determined, and the volume average equivalent circle particle diameter Dv (μm) is calculated using the following formula. In the formula, i is an integer from 1 to n, and Di is the circle-equivalent particle diameter of each particle (each dispersed phase).

[0352] The area ratio (%) of the dispersed phase is calculated based on the following formula: Area ratio (%) = (total area of ​​dispersed phase / analyzed area) × 100. When multiple types of dispersed phases with different dyeing densities are present, Di, Dv, and the area ratio are calculated without distinguishing between the dispersed phases.

[0353] (III-5) Activation energy of motion in a molten state The activation energy of motion was measured using an mq20 manufactured by Bruker. The longitudinal relaxation time T1 was measured at a temperature 10°C or more higher than the melting point. T1 was analyzed assuming one component and calculated by the least squares method. The obtained T1 was plotted as an Arrhenius plot to calculate the activation energy of motion. Apparatus: mq20 manufactured by Bruker Pulse sequence: inversion recovery method

[0354] (III-6) ΔHSP δ in the above formula (H) Ｄ , δ Ｐ , δ Ｈ The calculation was performed using commonly available commercial software (Hansen Solubility Parameter in Practice (HSPiP)) developed by Charles Hansen et al. ΔHSP can be adjusted to a preferred value by appropriately combining atomic groups contained in the compound, utilizing the knowledge described in HANSEN SOLUBILY PARAMETERS A User's Handbook (Charles M. Hansen, CRC Press).

[0355] The Hansen solubility parameters of polymer 1 were calculated using the solubility parameters of polyethylene, polymethyl acrylate, and polystearyl acrylate, respectively, using software developed by Charles Hansen et al. (Hansen Solubility Parameter in Practice (HSPiP)). Since the molar volume ratios of the ethylene unit, methyl acrylate unit, and hexadecyl acrylate unit in polymer 1 in the following example were 38:3:59, respectively, the Hansen solubility parameters of the homopolymers of each unit obtained by the above calculation were divided proportionally by the molar volume ratio (Equation 3-1, Equation 3-2, Equation 3-3). δ Ｄ１= 0.38 × δ Ｄポリエチレン + 0.03 × δD polymethyl acrylate + 0.59 × δD polyhexadecyl acrylate (3-1) δ Ｐ１ = 0.38 × δ Ｐポリエチレン +0.03×δP polymethyl acrylate +0.59×δP polyhexadecyl acrylate (3-2) δ Ｈ１ = 0.38 × δ Ｈポリエチレン + 0.03 × δH polymethyl acrylate + 0.59 × δH polyhexadecyl acrylate (3-3)

[0356] As a result, (δ Ｄ１ , δ Ｐ１ , δ Ｈ１ ) = (17.2, 1.1, 1.3).

[0357] Each Hansen solubility parameter δ of compound L Ｄ２ , δ Ｐ２ and δ Ｈ２ was also obtained using the above software.

[0358] Next, the Hansen solubility parameters of Polymer 1 and Compound L were substituted into formula (H) to obtain ΔHSP.

[0359] (III-7) Bleeding rate (a) Preparation of test specimens The heat storage composition was press-molded at 180 ° C to prepare three 50 cm square 1.5 mm thick specimens. A 6 mm diameter punched hole was drilled near the corner of the prepared test specimen, and a polypropylene cable tie was passed through the hole to form a ring shape. The test specimen could be hung in the thermo-hygrostat by clipping this ring-shaped portion to the top plate of the thermo-hygrostat described below.

[0360] (b) Evaluation of Bleeding Rate Temperature Control Conditions: The test specimen was hung in a constant temperature and humidity chamber (KHYV-40HP, manufactured by Satake Chemical Machinery Co., Ltd.), and the following temperature control conditions from step 1 to step 4 were repeated. Step 1: Maintained at 60°C for 2 hours. Step 2: Temperature changed from 60°C to 0°C over 1 hour. Step 3: Maintained at 0°C for 2 hours. Step 4: Temperature changed from 0°C to 60°C over 1 hour.

[0361] Weighing: The weight of the test piece before the start of the test and the weight of the test piece exposed to the above temperature conditions were measured over time. Before measuring the weight over time, the test piece was exposed to ethanol for 5 seconds, and the surface was lightly wiped with a pulp cloth. The ethanol on the surface was completely removed in a draft chamber to remove any bleeding components.

[0362] Calculation method for bleeding rate: The bleeding rate (wt%) was calculated based on the following formula. The weight of compound L before the test was calculated by multiplying the weight of the test piece before the test by the composition ratio of compound L (weight ratio when the total is taken as 1). The weight of bled compound L was calculated by subtracting the weight of the test piece after the test from the weight of the test piece before the test. Each value was the average value of three test pieces. However, Example A12 is data for only one specimen. Bleeding rate = (weight of bled compound L / weight of compound L before the test) x 100

[0363] In this example, the bleeding rate was calculated under any of the following test conditions. Test condition 1: Weight measurements were taken 32 times during the test, and the bleeding rate was calculated from the value obtained at the weighing time of 1087 hours. Test condition 2: Weight measurements were taken 27 times during the test, and the bleeding rate was calculated from the value obtained at the weighing time of 1009 hours. Test condition 3: Weight measurements were taken 20 times during the test, and the bleeding rate was calculated from the value obtained at the weighing time of 1008 hours. Test condition 4: Weight measurements were taken 7 times during the test, and the bleeding rate was calculated from the value obtained at the weighing time of 1008 hours. Test condition 5: Weight measurements were taken 17 times during the test, and the bleeding rate was calculated from the value obtained at the weighing time of 1032 hours.

[0364] In all test conditions, the measurement was terminated when the bleeding rate exceeded 90%. Furthermore, the concentration of Compound L on the surface of the test piece was reduced by cleaning during weighing, making bleeding more likely. In other words, the more frequently the weight was measured during the test, the higher the bleeding rate.

[0365] [IV] Raw Materials <Production of Precursor Polymers cf1-1 and cf1-2 (Reference Example 1)> Ethylene-methyl acrylate copolymers cf1-1 and cf1-2 were produced as follows. In an autoclave reactor, ethylene and methyl acrylate were copolymerized at a reaction temperature of 195°C and a reaction pressure of 160 MPa using tert-butyl peroxypivalate as a radical polymerization initiator to obtain ethylene-methyl acrylate copolymers cf1-1 and cf1-2. The compositions and MFRs of the resulting copolymers cf1-1 and cf1-2 were as follows. (cf1-1) Number of structural units derived from ethylene: 84.1 mol% Number of structural units derived from methyl acrylate: 15.9 mol% MFR (measured in accordance with JIS K7210 at a temperature of 190°C and a load of 21 N): 34 g / 10 min (cf1-2) Number of structural units derived from ethylene: 84.2 mol% Number of structural units derived from methyl acrylate: 15.8 mol% MFR (measured in accordance with JIS K7210 at a temperature of 190°C and a load of 21 N): 29 g / 10 min

[0366] <C １４～３０ Compounds having an alkyl group of the above formula: B-1: GINOL-16 (1-hexadecanol) [manufactured by GODREJ] B-2: GINOL-18 (1-octadecanol) [manufactured by GODREJ]

[0367] <Catalyst> C-1: tetraisopropyl orthotitanate [manufactured by Nippon Soda Co., Ltd.]

[0368] <Production of Polymer 1 (Reference Example 2)> After replacing the inside of a reactor equipped with a stirrer with nitrogen, 90 parts by weight of B-1 and 0.60 parts by weight of C-1 were added to 100 parts by weight of cf1-1, and the mixture was heated and stirred at an internal temperature of 145°C to 150°C for 3 hours at a minimum pressure of 0.3 kPa to obtain Polymer A-1 (ethylene-n-hexadecyl acrylate-methyl acrylate copolymer) (corresponding to Polymer 1 of the present invention). The melting peak temperature Tm (°C), melting enthalpy ΔHm between 10 and 60°C, and unreacted C １４～３０The content (mol %) of the compound having an alkyl group of the formula (I) was as follows: Structural unit A: 84.1 mol % Structural unit B: 13.3 mol % Structural unit C: 2.6 mol % Melting peak temperature Tm: 23°C (measurement condition 1) Melting enthalpy ΔHm between 10 and 60°C: 65 J / g (measurement condition 1) Unreacted C １４～３０ Content of compound having alkyl group: 0.9% by weight

[0369] <Production of Polymer 1 (Reference Example 4)> After replacing the inside of a reactor equipped with a stirrer with nitrogen, 97 parts by weight of B-2 and 0.60 parts by weight of C-1 were added to 100 parts by weight of cf1-1, and the mixture was heated and stirred at an internal temperature of 145°C to 150°C for 4 hours at a minimum pressure of 0.1 kPa to obtain Polymer A-2 (ethylene-n-octadecyl acrylate-methyl acrylate copolymer) (corresponding to Polymer 1 of the present invention). The melting peak temperature Tm (°C), melting enthalpy ΔHm between 10 and 60°C, and unreacted C １４～３０ The content (mol %) of the compound having an alkyl group of the formula (I) was as follows: Structural unit A: 84.1 mol % Structural unit B: 13.4 mol % Structural unit C: 2.5 mol % Melting peak temperature Tm: 36°C (measurement condition 1) Melting enthalpy ΔHm between 10 and 60°C: 83 J / g (measurement condition 1) Unreacted C １４～３０ Content of compound having alkyl group: 1.0% by weight

[0370] <Production of Polymer 1 (Reference Example 6)> After the inside of a reactor equipped with a stirrer was purged with nitrogen, 174 L of toluene, 4.6 L of a toluene solution prepared so that triisobutylaluminum was 2 wt %, and 119 L of a toluene solution prepared so that Linearene 18 ((α-olefin having 18 carbon atoms) (manufactured by Idemitsu Kosan Co., Ltd.) was 50 wt % were added. The reactor was heated to 60°C, and then ethylene was added so that its partial pressure became 0.5 MPa to stabilize the system. To this, a solution of 0.1 kg of triisobutylaluminum and 4.8 kg of toluene was added. Next, 2.2 kg of dimethylanilinium tetrakis(pentafluorophenyl)borate and diethylsilylene(tetramethylcyclopentadienyl)(3 Polymerization was initiated by adding 0.44 kg of (5-methyl-5-tert-butyl-phenoxy)titanium dichloride, and ethylene gas was fed to maintain a constant total pressure. After 120 minutes, ethanol was added to terminate the polymerization. After termination of the polymerization, the toluene solution containing the polymer was added to acetone to precipitate an olefin polymer, and the olefin polymer was separated by filtration and further washed with acetone. The resulting olefin polymer was vacuum dried to obtain Polymer A-4 (ethylene-octadecene copolymer) (corresponding to Polymer 1 of the present invention). The melting peak temperature Tm (°C) and melting enthalpy ΔHm between 10 and 60°C of the resulting Polymer A-4 were as follows: Structural unit A: 82.2 mol% Structural unit B: 17.8 mol% Melting peak temperature Tm: 21°C (Measurement condition 4) Melting enthalpy ΔHm between 10 and 60°C: 75 J / g (Measurement condition 4).

[0371] <Other polymers> D-1: Acryft WH206-F (ethylene-methyl methacrylate copolymer, melting peak temperature 84°C, melting enthalpy ΔHm between 10 and 60°C: 32 J / g, DSC measurement condition 1) [manufactured by Sumitomo Chemical Co., Ltd.] D-2: ENGAGE 8100 (ethylene-octene copolymer, melting peak temperature 60°C, melting enthalpy ΔHm between 10 and 60°C: 32 J / g, DSC measurement condition 1) [manufactured by The Dow Chemical Company]

[0372] <Organic Peroxide> E-1: CH-12 (a mixture containing 8% by weight of 2,5-dimethyl-2,5-di(tert-butylperoxy)hexane and 92% by weight of polypropylene) (1-minute half-life temperature: 180°C) [manufactured by NOF Corporation]

[0373] <Crosslinking aid> F-1: Hicross MS50 (a mixture of 50% by weight of trimethylolpropane trimethacrylate and 50% by weight of amorphous silicon dioxide) [manufactured by Seiko Chemical Co., Ltd.]

[0374] <Antioxidant> G-1: SONGNOX 1010 (pentaerythritol tetrakis[3-(3',5'-di-tert-butyl-4'-hydroxyphenyl)propionate]) [manufactured by SONGWON]

[0375] <Processing heat stabilizer> H-1: IRGAFOS168 (tris(2,4-di-tert-butylphenyl)phosphite) [manufactured by BASF]

[0376] <Lubricant> I-1: Alflow AD-281F (ethylene bis(oleic acid amide)) [manufactured by NOF Corporation]

[0377] <Packaging materials> J-1: Excellen VL VL700 (linear low-density polyethylene, peak melting temperature 90°C) [manufactured by Sumitomo Chemical Co., Ltd.]

[0378] <Compound L> K-1: Exepal BS (butyl stearate) [manufactured by Kao Corporation] K-2: hexadecyl palmitate [manufactured by Tokyo Chemical Industry Co., Ltd.] K-3: dihexadecyl ether [manufactured by Tokyo Chemical Industry Co., Ltd.] K-4: tripalmitin [manufactured by Tokyo Chemical Industry Co., Ltd.] K-5: stearyl stearate [manufactured by Fujifilm Wako Pure Chemical Industries Co., Ltd.] K-6: Exepal EH-S (2-ethylhexyl palmitate) [manufactured by Kao Corporation] K-7: octadecyl acetate [manufactured by Tokyo Chemical Industry Co., Ltd.] K-8: methyl stearate [manufactured by Tokyo Chemical Industry Co., Ltd.] K-9: methyl palmitate [manufactured by Tokyo Chemical Industry Co., Ltd.] K-10: octadecane [manufactured by Tokyo Chemical Industry Co., Ltd.] K-11: 1-tetradecanol [manufactured by Tokyo Chemical Industry Co., Ltd.] K-12: Sperm acetyl (hexadecyl myristate) [NOF Corporation] The physical properties of Compound L are shown in the table below. DSC measurements were carried out under measurement condition 2 for K-2, K-3, K-4, K-5, K-7, K-8, K-9, K-10, and K-12, and under measurement condition 3 for K-1, K-6, and K-11.

[0379] <Kneading device> Twin-screw extruder M1: Screw diameter D = 75 mm; Effective screw length L / screw diameter D = 40; Single-screw extruder M2: Screw diameter D = 20 mm; Labo Plastomill M3 (Labo Plastomill 4C150, manufactured by Toyo Seiki Co., Ltd.); Small kneader M4 (Xplore, manufactured by DSM)

[0380] <Production of a composition containing polymer 1 (Reference Example 3)> 82.9 parts by weight of the polymer A-1 obtained in Reference Example 2, 10.9 parts by weight of D-1, 4.9 parts by weight of E-1, 0.1 parts by weight of G-1, 0.1 parts by weight of H-1, and 0.1 parts by weight of I-1 were fed to a twin-screw extruder M1, and melt-kneaded at a screw rotation speed of 350 rpm, a discharge rate of 150 kg / hr, and a maximum barrel temperature of 220 ° C. to produce a resin composition 1' containing polymer 1 (polymer A-1). Furthermore, J-1 was fed to a single-screw extruder M2, and melt-kneaded at a screw rotation speed of 74.0 Hz, a discharge rate of 9 kg / hr, and a maximum barrel temperature of 240 ° C. to produce a sheet-shaped J-1. Next, using a multilayer sheet molding machine equipped with a multilayer die, resin composition 1' and J-1 were multilayer extruded at a die temperature of 230°C so that the outer layer / inner layer / outer layer ratio was J-1 / resin composition 1' / J-1 and the weight ratio of outer layer / inner layer / outer layer was 4.5 / 150 / 4.5, to produce pellets of packaged heat storage composition 1 containing polymer 1 (polymer A-1). After melt-kneading and homogenizing the pellets, DSC measurement was performed under measurement condition 2, and the melting peak temperature Tm was 23°C, and the melting enthalpy ΔHm between 10 and 60°C was 58 J / g.

[0381] <Production of a composition containing polymer 1 (Reference Example 7)> 82.9 parts by weight of the polymer A-2 obtained in Reference Example 4, 10.9 parts by weight of D-1, 4.9 parts by weight of E-1, 0.1 parts by weight of G-1, 0.1 parts by weight of H-1, and 0.1 parts by weight of I-1 were fed to a twin-screw extruder M1, and melt-kneaded at a screw rotation speed of 350 rpm, a discharge rate of 150 kg / hr, and a maximum barrel temperature of 220 ° C. to produce a resin composition 2' containing polymer 1 (polymer A-2). Furthermore, J-1 was fed to a single-screw extruder M2, and melt-kneaded at a screw rotation speed of 74.0 Hz, a discharge rate of 9 kg / hr, and a maximum barrel temperature of 240 ° C. to produce a sheet-shaped J-1. Next, using a multilayer sheet molding machine equipped with a multilayer die, resin composition 2' and J-1 were multilayer extruded at a die temperature of 230 ° C. so that the outer layer / inner layer / outer layer ratio was J-1 / resin composition 2' / J-1 and the weight ratio of outer layer / inner layer / outer layer was 4.5 / 150 / 4.5, to produce pellets of packaged heat storage composition 2 containing polymer 1 (polymer A-2). After melt-kneading and homogenizing the pellets, DSC measurement was performed under measurement condition 5, and the melting peak temperature Tm was 33 ° C., and the melting enthalpy ΔHm between 10 and 60 ° C. was 78 J / g.

[0382] <Production of a composition containing polymer 1 (Reference Example 8)> 70 parts by weight of polymer A-4 obtained in Reference Example 6 and 30 parts by weight of D-2 were supplied to a small kneader M4 and kneaded for 5 minutes at a barrel temperature of 200°C and a rotation speed of 100 rpm to produce heat storage composition 3 containing polymer 1 (polymer A-4). When DSC measurement was carried out under measurement condition 1, the melting peak temperature Tm was 19°C and the melting enthalpy ΔHm between 10 and 60°C was 60 J / g.

[0383] [V] Preparation and evaluation of the heat storage composition of the present invention

[0384] Example A1: 90 parts by weight of heat storage composition 1 and 10 parts by weight of K-1 were fed to a Labo Plastomill M3 and kneaded for 5 minutes at a barrel temperature of 190°C and a rotor rotation speed of 80 rpm to obtain the target heat storage composition A1. Heat storage composition A1 was evaluated for the items described in [III] Method for evaluating physical properties of heat storage compositions. DSC measurement was performed under measurement condition 2, and the bleeding rate was evaluated under test condition 1.

[0385] Example A2: The target heat storage composition A2 was obtained in the same manner as in Example A1, except that K-2 was used instead of K-1. DSC measurement was performed under measurement condition 2, and the bleeding rate was evaluated under test condition 3.

[0386] Example A3: The target heat storage composition A3 was obtained in the same manner as in Example A1, except that K-3 was used instead of K-1. DSC measurement was performed under measurement condition 2, and the bleeding rate was evaluated under test condition 3.

[0387] Example A4: The target heat storage composition A4 was obtained in the same manner as in Example A1 except that K-4 was used instead of K-1. DSC measurement was performed under measurement condition 2, and the bleeding rate was evaluated under test condition 3.

[0388] Example A5: The target heat storage composition A5 was obtained in the same manner as in Example A1, except that K-5 was used instead of K-1. DSC measurement was performed under measurement condition 2, and the bleeding rate was evaluated under test condition 3.

[0389] Example A6: The target heat storage composition A6 was obtained in the same manner as in Example A1, except that K-6 was used instead of K-1. DSC measurement was performed under measurement condition 2, and the bleeding rate was evaluated under test condition 2.

[0390] Example A7: The target heat storage composition A7 was obtained in the same manner as in Example A1, except that K-7 was used instead of K-1. DSC measurement was performed under measurement condition 2, and the bleeding rate was evaluated under test condition 2.

[0391] Example A8: The target heat storage composition A8 was obtained in the same manner as in Example A1, except that K-8 was used instead of K-1. DSC measurement was performed under measurement condition 2, and the bleeding rate was evaluated under test condition 3.

[0392] Example A9: The target heat storage composition A9 was obtained in the same manner as in Example A1, except that the heat storage composition 1 was 80 parts by weight and the K-1 was 20 parts by weight. DSC measurement was performed under measurement condition 2, and the bleeding rate was evaluated under test condition 4.

[0393] Example A10: The target heat storage composition A10 was obtained in the same manner as in Example A1, except that the heat storage composition 2 was 90 parts by weight and the K-2 was 10 parts by weight. DSC measurement was performed under measurement condition 2, and the bleeding rate was evaluated under test condition 5.

[0394] Example A11: The target heat storage composition A11 was obtained in the same manner as in Example A1, except that the heat storage composition 2 was 90 parts by weight and the K-12 was 10 parts by weight. DSC measurement was performed under measurement condition 2, and the bleeding rate was evaluated under test condition 4.

[0395] Example A12: The target heat storage composition A12 was obtained in the same manner as in Example A1, except that the amounts of the heat storage composition 3 and K-12 were 90 parts by weight and 10 parts by weight, respectively. DSC measurement was performed under measurement condition 2, and the bleeding rate was evaluated under test condition 4.

[0396] Example A13: The target heat storage composition A13 was obtained in the same manner as in Example A1, except that D-1: 90 parts by weight and K-12: 10 parts by weight were used. DSC measurement was performed under measurement condition 2, and the bleeding rate evaluation was performed under test condition 4.

[0397] Comparative Example B2: The target heat storage composition B2 was obtained in the same manner as in Example A1, except that K-9 was used instead of K-1. DSC measurement was performed under measurement condition 2, and the bleeding rate was evaluated under test condition 3.

[0398] Comparative Example B3: The target heat storage composition B3 was obtained in the same manner as in Example A1, except that K-10 was used instead of K-1. DSC measurement was performed under measurement condition 2, and the bleeding rate was evaluated under test condition 2.

[0399] Comparative Example B4: The target heat storage composition B4 was obtained in the same manner as in Example A1, except that K-11 was used instead of K-1. DSC measurement was performed under measurement condition 2, and the bleeding rate was evaluated under test condition 1.

[0400]

Claims

1. A heat storage composition comprising compound L and polymer 1, The heat storage composition has a melting enthalpy of 30 J / g or more in the range of 10 to 60 ° C., The ΔHSP of the polymer 1 and the compound L is 3.5 or less, Compound L has a melting enthalpy of 30 J / g or more in the range of 0 to 100°C; (b1) the molecular weight of compound L is 290 to 2000 g / mol; and / or (b2) the kinetic activation energy of compound L is 20 kJ / mol or more; Heat storage composition.

2. The heat storage composition according to claim 1 , which satisfies the requirement (b2).

3. The heat storage composition according to claim 1 , which satisfies the requirement (b1).

4. The heat storage composition according to claim 1 , which satisfies both requirements (b1) and (b2).

5. Compound L is C １４～３０ The heat storage composition according to claim 1 or 2, having an alkyl group of the formula:

6. Compound L is C １４～３０ The heat storage composition according to claim 1 or 2, having a linear alkyl group of the formula:

7. 3. The heat storage composition according to claim 1, wherein compound L is a saturated fatty acid ester, a saturated ether, or a saturated hydrocarbon.

8. 3. The heat storage composition according to claim 1, wherein compound L is a saturated fatty acid ester or a saturated ether.

9. The heat storage composition according to claim 1 or 2, wherein the melting enthalpy of polymer 1 in the range of 10 to 60° C. is 30 J / g or more.

10. The heat storage composition according to claim 1 or 2, wherein the polymer 1 is a polymer having a structural unit B represented by formula (1): 【Chemistry 1】 In formula (1), R １ represents a hydrogen atom or a methyl group, L １１ represents a single bond, —CO—O—, —O—CO—, or —O—; L １２ is a single bond, -CH ２ --, --CH ２ -CH ２ --, --CH ２ -CH ２ -CH ２ --, --CH ２ -CH(OH)-CH ２ - or -CH ２ -CH(CH ２ OH)—, L １３ is a single bond, -CO-O-, -O-CO-, -O-, -CO-NH-, -NH-CO-, -CO-NH-CO-, -NH-CO-NH-, -NH-, or -N(CH ３ )-represents L １６ is C １４～３０ represents an alkyl group represented by the formula: In addition, L １１ , L １２ , and L １３ In each of the horizontally written chemical formulas, the left side corresponds to the upper side of formula (1) (the main chain side of the polymer), and the right side corresponds to the lower side of formula (1) (the terminal side of the side chain of the polymer).

11. The heat storage composition according to claim 10, wherein the polymer 1 has a structural unit A derived from ethylene.

12. The thermal storage composition according to claim 10, having at least one structural unit C selected from the group consisting of a structural unit represented by formula (2) and a structural unit represented by the following formula (3): 【Chemistry 2】 【Chemistry 3】 In formula (2), R ２ represents a hydrogen atom or a methyl group, L ２１ represents a single bond, —CO—O—, —O—CO—, or —O—; L ２４ is C １～８ represents an alkylene group represented by the formula: L ２５ represents a hydrogen atom, an epoxy group, -CH(OH)-CH ２ OH, a carboxy group, a hydroxy group, an amino group, or C １～４ represents an alkylamino group represented by the formula: In addition, L １ In each of the horizontally written chemical formulas in the explanation of the chemical structure, the left side corresponds to the upper side of formula (2) (the main chain side of the polymer), and the right side corresponds to the lower side of formula (2) (the terminal side of the side chain of the polymer).

13. The heat storage composition according to claim 10, wherein the total number of the structural units A and B (and, if present, the structural unit C) is 90% or more relative to the total number of all structural units contained in the polymer 1 (100%).

14. The heat storage composition according to claim 1 or 2, wherein the phase structure of the polymer component satisfies any one of the following requirements: (d1) does not have an island-sea structure; (d2) has a sea-island structure in which the volume-average circular particle diameter of the islands (dispersed phase) is 1.5 μm or less; or (d3) It has a sea-island structure in which the area ratio of islands (dispersed phase) is 15% or less.

15. 3. The heat storage composition according to claim 1 or 2, wherein the polymer 1 is crosslinked.

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