Composition

Abstract

The composition comprises a polymer B and a compound C. The polymer B is an aliphatic polyester, and the content of the compound C is 0.1 parts by mass or more and less than 100 parts by mass per 100 parts by mass of the total of the polymer B and the compound C. The compound C has at least one functional group selected from the group consisting of a heterocyclic group having two or more heteroatoms, a cyclic ether group, an acid anhydride group, an isocyanate group, and a carbodiimide group.

Description

Technical Field

[0001] The present invention relates to compositions. Background Art

[0002] Aliphatic polyester polymers are resins with low environmental load that can be synthesized using renewable resources without using fossil resources, and are resins with excellent molding processability and mechanical properties. Therefore, to date, aliphatic polyester polymers have been added to various packaging materials, various containers such as bottles, food packaging materials, container covers, stationery, daily groceries, fibers for carpets or sofas, automotive interior and exterior materials, electrical / electronic equipment parts, building or residential interior materials, and other building materials, thereby reducing environmental load. In recent years, for these articles, there is often a demand to improve the instability of the extrusion amount or injection amount during melt processing caused by thermal degradation of aliphatic polyester polymers.

[0003] Therefore, as one means for satisfying these requirements, as described in Patent Document 1, a method of blending a known stabilizer mixture such as a phenolic antioxidant, a phosphite or a phosphite, and a sulfur-containing synergist into an aliphatic polyester polymer can be considered.

[0004] Prior art literature

[0005] Patent Literature

[0006] Patent Document 1: Japanese Patent Application No. 2011-526317 Summary of the invention

[0007] Problems to be solved by the invention

[0008] However, the use of known stabilizers such as phenolic antioxidants, phosphites or phosphites, and sulfur-containing synergists cannot suppress the degradation of aliphatic polyester polymers due to long-term heating. Therefore, there is a problem that even if a composition in which a phenolic antioxidant, phosphites or phosphites, and sulfur-containing synergists are blended with aliphatic polyester and a known stabilizer such as phenolic antioxidants, phosphites or phosphites, and sulfur-containing synergists is heated in a cylinder for a certain period of time or longer and then extruded from a die to form molten strands, the uniformity of the thickness of the obtained strands is low.

[0009] The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a composition which, although containing an aliphatic polyester polymer, can improve the uniformity of the thickness of the obtained strands when the composition is heated in a cylinder for a certain period of time or longer and then extruded from a die to form molten strands.

[0010] Means used to solve problems

[0011] [1] A composition comprising a polymer B and a compound C, wherein:

[0012] The polymer B is an aliphatic polyester,

[0013] The content of the compound C is greater than or equal to 0.1 parts by mass and less than 100 parts by mass relative to 100 parts by mass of the total of the polymer B and the compound C,

[0014] The compound C has at least one functional group selected from the group consisting of a heterocyclic group having two or more hetero atoms, a cyclic ether group, an acid anhydride group, an isocyanate group, and a carbodiimide group.

[0015] [2] The composition according to [1], wherein the heterocyclic group has two or more hetero atoms.

[0016] [3] The composition according to [2], wherein the two or more hetero atoms include a nitrogen atom and an oxygen atom.

[0017] [4] The composition according to any one of [1] to [3], wherein the heterocyclic group is Azolyl.

[0018] [5] The composition according to any one of [1] to [4], wherein the cyclic ether group is an epoxy group.

[0019] [6] The composition according to any one of [1] to [5], wherein the compound C is a polymer having a weight average molecular weight Mw of 5000 or more.

[0020] [7] The composition according to any one of [1] to [6], wherein the compound C is a polymer having the functional group in a side chain.

[0021] [8] The composition according to any one of [1] to [7], wherein the polymer B is a poly(3-hydroxyalkanoate) polymer having a melting point of 150° C. or higher.

[0022] [9] The composition according to any one of [1] to [8], further comprising an olefin polymer A.

[0023] Effects of the Invention

[0024] According to the present invention, there is provided a composition comprising an aliphatic polyester-based polymer, wherein when the composition is heated in a cylinder for a certain period of time or longer and then extruded from a die to form molten strands, the strands have high uniformity in thickness. DETAILED DESCRIPTION

[0025] Several embodiments of the present invention are described in detail below, but the present invention is not limited to the following embodiments.

[0026] (Composition)

[0027] The composition I of the embodiment includes the polymer B and the compound C, and may include the olefin polymer A.

[0028] <Polymer B>

[0029] Polymer B is an aliphatic polyester polymer.

[0030] The aliphatic polyester-based polymer has a structure of a polycondensate of an aliphatic polycarboxylic acid component and an aliphatic polyol component, or a polycondensate of an aliphatic hydroxycarboxylic acid, and the main chain of the repeating unit does not contain an aromatic hydrocarbon structure.

[0031] Examples of aliphatic polyester polymers include polymers of hydroxycarboxylic acids or lactones, polycondensates of diols and dicarboxylic acids, and copolymers thereof. When polymer B is a copolymer, the copolymer may be arranged in any of a random copolymer, an alternating copolymer, a block copolymer, a graft copolymer, and the like.

[0032] In addition, at least a part of these polymers may be a polymer cross-linked with a cross-linking agent such as polyisocyanate such as xylylene diisocyanate or 2,4-toluene diisocyanate, or polysaccharides such as cellulose, acetyl cellulose, and ethyl cellulose. In addition, at least a part of these polymers may have any structure such as linear, cyclic, branched, star, or three-dimensional network structures, without any limitation, and may be a copolymer with a polyolefin resin or a graft polymer with a polyolefin resin.

[0033] In addition, the polymer B may be used alone or in combination.

[0034] Examples of the hydroxycarboxylic acid include hydroxycarboxylic acids having 2 to 18 carbon atoms, preferably hydroxycarboxylic acids having 6 or less carbon atoms, and most preferably hydroxycarboxylic acids having 4 carbon atoms. Specifically, examples include glycolic acid, L-lactic acid, D-lactic acid, D,L-lactic acid, 3-hydroxybutyric acid, 3-hydroxyvaleric acid, 3-hydroxypropionic acid, 4-hydroxybutyric acid, 4-hydroxyvaleric acid, 5-hydroxyvaleric acid, 3-hydroxyvaleric acid, 3-hydroxyhexanoic acid, 3-hydroxyheptanoic acid, 3-hydroxyoctanoic acid, 3-hydroxynonanoic acid, and 3-hydroxydecanoic acid.

[0035] Examples of the lactone include propiolactone, butyrolactone, valerolactone, caprolactone, and laurolactone.

[0036] As the diol, a diol having 2 to 10 carbon atoms is preferred. Among them, an aliphatic diol having 2 to 4 carbon atoms or an alicyclic diol having 5 to 6 carbon atoms is more preferred. Specifically, ethylene glycol, 1,3-propylene glycol, 1,4-butanediol, 1,2-butanediol, 1,5-pentanediol, 1,6-hexanediol, 1,8-octanediol, 1,10-decanediol, 1,12-dodecanediol, 1,14-tetradecanediol, 1,16-hexadecanediol, 1,18-octadecanediol, 1,2-cyclohexanediol, 1,4-cyclohexanediol, 1,2-cyclohexanedimethanol, 1,4-cyclohexanedimethanol, etc. are mentioned.

[0037] As the dicarboxylic acid, an aliphatic dicarboxylic acid having 2 to 12 carbon atoms is preferred. Among them, an aliphatic dicarboxylic acid having 2 to 6 carbon atoms or an alicyclic dicarboxylic acid having 5 to 6 carbon atoms is more preferred. Specifically, oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, azelaic acid, sebacic acid, undecanedioic acid, dodecanedioic acid, 1,14-tetradecanedioic acid, 1,16-hexadecanedioic acid, 1,18-octadecanediic acid, dimer acid and its hydrogenated product, hexahydrophthalic acid, hexahydroisophthalic acid, hexahydroterephthalic acid, etc. are mentioned. In addition, these dicarboxylic acids may be derivatives such as alkyl esters and anhydrides having 1 to 4 carbon atoms.

[0038] Among the above-mentioned aliphatic polyester polymers, polylactic acid, polybutylene succinate, poly(butylene succinate-co-butylene adipate), polycaprolactone, poly(3-hydroxybutyrate), poly(3-hydroxybutyrate-co-3-hydroxyhexanoate), and polyglycolic acid are preferably used.

[0039] When polylactic acid is used as polymer B, the polylactic acid is preferably one in which the ratio of the L-form in the lactic acid component constituting the polylactic acid is 94 mol % or more. By setting the ratio of the L-form within such a range, a decrease in the melting point can be prevented.

[0040] (Poly(3-hydroxyalkanoate) polymer)

[0041] The polymer B may be a poly(3-hydroxyalkanoate)-based polymer having a melting point of 150° C. or higher.

[0042] The poly(3-hydroxyalkanoate) polymer is a polyhydroxyalkanoate, i.e., a polycondensate (polyester) of hydroxyalkanoic acid, and necessarily contains a repeating unit of a 3-hydroxyalkanoate represented by formula (1). In formula (1), R is a hydrogen atom, a halogen atom, an alkyl group having 1 to 15 carbon atoms, a cyano group, an amino group having 1 to 18 carbon atoms, an alkoxy group having 1 to 11 carbon atoms (alkyloxy group), an amide group having 1 to 20 carbon atoms, an aryl group having 6 to 12 carbon atoms, or a monovalent heterocyclic group having 1 to 9 carbon atoms. These groups may have a substituent. In particular, from the viewpoint of compatibility with components other than polymer B (e.g., polymer A) contained in the composition, R is preferably an alkyl group having 1 to 8 carbon atoms, an amide group having 1 to 20 carbon atoms, or an aryl group having 6 to 8 carbon atoms.

[0043] [-O-CHR-CH2-CO-]……(1)

[0044] Examples of the halogen atom include F, Cl, Br and I.

[0045] The alkyl group having 1 to 15 carbon atoms may be straight-chain or branched. The number of carbon atoms in the alkyl group is preferably 1 to 8, and more preferably 1 to 4. Examples of the alkyl group include methyl, ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl, tert-butyl, pentyl, isopentyl, 2-methylbutyl, 1-methylbutyl, hexyl, isohexyl, 3-methylpentyl, 2-methylpentyl, 1-methylpentyl, heptyl, octyl, isooctyl, 2-ethylhexyl, 3,7-dimethyloctyl, nonyl, decyl, undecyl, dodecyl, tetradecyl, and pentadecyl.

[0046] Examples of the amino group having 1 to 18 carbon atoms include amino, alkylamino, dialkylamino, arylamino, alkylarylamino, benzylamino, and dibenzylamino.

[0047] Examples of the alkylamino group include methylamino, ethylamino, propylamino, butylamino, pentylamino, hexylamino, heptylamino, octylamino, nonylamino, decylamino, dodecylamino, isopropylamino, isobutylamino, isopentylamino, sec-butylamino, tert-butylamino, sec-pentylamino, tert-pentylamino, tert-octylamino, neopentylamino, cyclopropylamino, cyclobutylamino, cyclopentylamino, cyclohexylamino, cycloheptylamino, cyclooctylamino, 1-adamantylamino, and 2-adamantylamino.

[0048] Examples of the dialkylamino group include dimethylamino, diethylamino, dipropylamino, dibutylamino, dipentylamino, diisopropylamino, diisobutylamino, diisopentylamino, methylethylamino, methylpropylamino, methylbutylamino, methylisobutylamino, dicyclopropylamino, 1-pyrrolidinyl, 1-piperidinyl and 1-piperazinyl.

[0049] Examples of the arylamino group include anilino, 1-naphthylamino, 2-naphthylamino, o-toluidinyl, m-toluidinyl, p-toluidinyl, 1-fluorenylamino, 2-fluorenylamino, 2-thiazolylamino, and p-terphenylamino.

[0050] The alkylarylamino group includes N-methylanilino, N-ethylanilino, N-propylanilino, N-butylanilino, N-isopropylanilino and N-pentylanilino.

[0051] Examples of the alkoxy group having 1 to 11 carbon atoms include methoxy, ethoxy, propoxy, isopropoxy, butoxy, isobutoxy, sec-butoxy, tert-butoxy, cyclopropyloxy, cyclobutyloxy, and cyclopentyloxy.

[0052] An "amide group" refers to a group obtained by removing a hydrogen atom bonded to a nitrogen atom from a carboxylic acid amide. Examples of amide groups having 1 to 20 carbon atoms include formamide, acetamide, propionamide, butyramide, benzamide, trifluoroacetamide, pentafluorobenzamide, etc. A A group represented by A is a hydrogen atom or a monovalent organic group); and diformamide, diacetamide, dipropionamide, dibutyramide, dibenzamide, di(trifluoroacetyl)amide, di(pentafluorobenzoyl)amide, etc. are represented by -N(-C(=O)-R A )(-C(=O)-R B ) represented by a group (where R A , R B Each of them is independently a hydrogen atom or a monovalent organic group). The organic group may be an alkyl group which may be substituted by a halogen atom, an alkoxy group which may be substituted by a halogen atom, or an aryl group which may be substituted by a halogen atom. Among them, the amide group is preferably a formamide group, an acetamide group, a propionamide group, a butyramide group, or a benzamide group.

[0053] Examples of the aryl group having 6 to 12 carbon atoms include phenyl, tolyl, xylyl, naphthyl, and biphenylyl. Among them, phenyl, tolyl, and xylyl are more preferred.

[0054] Examples of heteroatoms in the monovalent heterocyclic group having 1 to 9 carbon atoms include N, O and S. The group may be saturated or unsaturated, and may have one or more heteroatoms, or may have different types of heteroatoms. Examples of such heterocyclic groups include thienyl, pyrrolyl, furanyl, pyridyl, piperidyl, quinolyl, isoquinolyl, pyrimidinyl, triazinyl and thiazolyl.

[0055] The repeating unit of the polymer B may contain only one or more 3-hydroxyalkanoic acid esters represented by the formula (1), or may contain one or more 3-hydroxyalkanoic acid esters represented by the formula (1) and one or more other hydroxyalkanoic acid esters.

[0056] In the polymer B, preferably 50 mol % or more, and more preferably 70 mol % or more, of the repeating units of the 3-hydroxyalkanoate represented by the formula (1) are contained, based on all the repeating units of the hydroxyalkanoate (100 mol %).

[0057] Examples of 3-hydroxyalkanoic acid esters represented by the formula (1) include: R is a hydrogen atom or a C n H 2n+1 The alkyl group represented by the present invention, when n is an integer of 1 to 15, is 3-hydroxybutyrate (hereinafter sometimes described as 3HB) with n=1, 3-hydroxyvalerate (hereinafter sometimes described as 3HV) with n=2, 3-hydroxyhexanoate (hereinafter sometimes described as 3HH) with n=3, 3-hydroxyoctanoate with n=5, 3-hydroxyoctadecanoate with n=15, and 3-hydroxypropionate wherein R is a hydrogen atom.

[0058] Examples of the polymer B having only one type of repeating unit represented by the formula (1) include poly(3-hydroxybutyrate) (hereinafter sometimes referred to as P3HB).

[0059] Examples of the polymer B having only a plurality of repeating units represented by (1) include poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) (hereinafter sometimes referred to as P3HB3HH), poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (hereinafter sometimes referred to as P3HB3HV), and poly(3-hydroxybutyrate-co-3-hydroxypropionate) (hereinafter sometimes referred to as P3HB3HP).

[0060] Examples of other hydroxyalkanoic acid esters other than the 3-hydroxyalkanoic acid ester represented by the formula (1) include a repeating unit represented by the formula (2) (in the formula (2), R 1 A hydrogen atom or a C n H 2n+1 The alkyl group represented by is, wherein n is an integer of 1 to 15, and m is an integer of 2 to 10).

[0061] [-O-CHR 1 -C m H 2m+1 -CO-] …… (2)

[0062] Examples of polymer B comprising repeating units of formula (1) and formula (2) include poly(3-hydroxybutyrate-co-4-hydroxybutyrate) (eg, the following formula (P3HB4HB)).

[0063] From the viewpoint of increasing the melting point, the repeating unit of the polymer B preferably contains at least 3-hydroxybutyrate among the 3-hydroxyalkanoate represented by the formula (1).

[0064] In the polymer B, preferably 50 mol % or more, and more preferably 70 mol % or more, of repeating units of 3-hydroxybutyrate based on all repeating units of hydroxyalkanoate (100 mol %).

[0065] The polymer B may have two or more types of ester repeating units, and may be, for example, a binary polymer having two types of repeating units, a ternary polymer having three types of repeating units, or a tetrapolymer having four types of repeating units as described above.

[0066] For example, examples of the terpolymer include poly(3-hydroxybutyrate-co-3-hydroxyvalerate-co-3-hydroxyhexanoate) (hereinafter, sometimes described as (P3HB3HV3HH)).

[0067] As described above, the polymer B preferably contains 3-hydroxybutyrate in the repeating unit of 3-hydroxyalkanoate represented by formula (1). The ratio XX of the repeating unit of 3-hydroxybutyrate is preferably 90 mol% or more, more preferably 95 mol% or more, and further preferably 98.0 mol% or more, relative to 100 mol of all ester repeating units of hydroxyalkanoate.

[0068] The ratio XX is usually 100 mol % or less, preferably 99.9 mol % or less, and preferably 99.8 mol % or less.

[0069] The arrangement of the copolymer may be any of random copolymer, alternating copolymer, block copolymer, graft copolymer and the like.

[0070] Polymer B may have other ester repeating units other than formula (1) and formula (2), but the main chain of the other ester repeating unit does not contain an aromatic hydrocarbon structure. That is, polymer B is an aliphatic polyester. However, a group having an aromatic hydrocarbon group may be bonded to a carbon of the main chain of the other ester repeating unit.

[0071] The constitutional ratio of the repeating units in the polymer B can be calculated from the results of NMR measurement such as 1H-NMR or 13C-NMR as described in L. Tripathi., MC Factories, 11, 44 (2012).

[0072] In addition, the polymer B may be a mixture of two or more poly(3-hydroxyalkanoate)-based polymers.

[0073] The weight average molecular weight (Mw) of polymer B can be 10,000 to 1,000,000, preferably 20,000 to 800,000, and more preferably 30,000 to 600,000. By adjusting the weight average molecular weight (Mw) to 10,000 or more, a molded body with excellent impact strength and tensile elongation can be obtained. In addition, by adjusting the weight average molecular weight to 500,000 or less, the dispersibility in the olefin polymer A becomes good. The weight average molecular weight can be 400,000 or less, 300,000 or less, 200,000 or less, or 100,000 or less. It should be noted that in this specification, the weight average molecular weight (Mw) is measured by GPC using standard polystyrene as a molecular weight standard substance.

[0074] The polymer B is a thermoplastic resin, and is preferably crystalline.

[0075] The melt mass flow rate (MFR(B)) of polymer B measured under the conditions of a temperature of 190°C or 170°C and a load of 2.16 kgf in accordance with JIS K7210-2014 is preferably 0.1 g / 10 min or more and 200 g / 10 min or less. MFR(B) may be 1 g / 10 min or more, 3 g / 10 min or more, 5 g / 10 min or more, 7 g / 10 min or more, 8 g / 10 min or more, 10 g / 10 min or more, or 20 g / 10 min or more. MFR(B) may be 150 g / 10 min or less, or 100 g / 10 min or less.

[0076] The melting point (Tm) of polymer B is 150°C or higher, and may be 155°C or higher, 160°C or higher, 165°C or higher, 170°C or higher, or 175°C or higher. The melting point (Tm) of polymer B may be 220°C or lower, 200°C or lower, or 190°C or lower.

[0077] The melting point (Tm) of the polymer B is measured from the position of a main peak due to melting of the crystal determined by differential scanning calorimetry (DSC) in accordance with JIS K7121.

[0078] The poly(3-hydroxyalkanoate) polymer may be a poly(3-hydroxyalkanoate) polymer produced by microorganisms, or a poly(3-hydroxyalkanoate) polymer produced from a compound derived from petroleum or plant raw materials (such as cyclic lactones).

[0079] The poly(3-hydroxyalkanoate)-based polymer may be one in which each repeating unit of hydroxyalkanoate is composed of only D-form (R-form) as in the case of a poly(3-hydroxyalkanoate)-based polymer produced by a microorganism, or one in which the repeating unit of hydroxyalkanoate contains both D-form (R-form) and L-form (S-form) as in the case of a poly(3-hydroxyalkanoate)-based polymer derived from a mixture of D-form (R-form) and L-form (S-form).

[0080] In the poly(3-hydroxyalkanoate)-based polymer produced by microorganisms, the repeating unit of formula (1) can be represented by the following formula: In formula (BI-1), n ​​represents the degree of polymerization.

[0081]

[0082] Furthermore, for example, poly(3-hydroxybutyrate) produced by a microorganism has the following structure. In formula (BI-2), n represents the degree of polymerization.

[0083]

[0084] In addition, poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) produced by a microorganism has the following structure. In formula (BI-3), m and n represent the degree of polymerization.

[0085]

[0086] In addition, poly(3-hydroxybutyrate-co-4-hydroxybutyrate) produced by a microorganism has the following structure: In formula (BI-4), m and n represent the degree of polymerization.

[0087]

[0088] Polymer B may be biodegradable.

[0089] For example, poly(3-hydroxyalkanoate) polymers can be produced by using microorganisms such as Alcaligenes eutrophus AC32 strain (international deposit based on the Budapest Treaty, international depositary unit: Patent Organism Depository of the National Institute of Advanced Industrial Science and Technology (1-1-1, Central 6, Tsukuba-shi, Ibaraki, Japan), original deposit date: August 12, 1996, transferred on August 7, 1997, deposit number FERMBP-6038 (transferred from original deposit FERMP-15786)) (J. Bacteriol., 179, 4821 (1997)) obtained by introducing a PHA synthase gene derived from Aeromonas caviae into Alcaligenes eutrophus.

[0090] (Compound C)

[0091] Compound C has at least one functional group selected from the group consisting of a heterocyclic group having two or more hetero atoms, a cyclic ether group, an acid anhydride group, an isocyanate group, and a carbodiimide group in the molecule.

[0092] Compound C may be a low molecular weight compound, but is preferably a polymer having a weight average molecular weight Mw of 5000 or more. When compound C is a polymer, the functional group may be located in any of the main chain, side chain and terminal, but is preferably located in the side chain. The polymer may be a block, graft or random copolymer.

[0093] Compound C may have a functional group other than the above-mentioned functional groups. Compound C may be a mixture of two or more compounds.

[0094] Preferred functional groups are heterocyclic groups having two or more hetero atoms or cyclic ether groups.

[0095] (Compound C containing a heterocyclic group having two or more heteroatoms)

[0096] Examples of heteroatoms include N, O, S and P. The heterocyclic group may be saturated or unsaturated, but is preferably unsaturated. The total number of carbon atoms and heteroatoms constituting the ring may be 3 to 9.

[0097] The heterocyclic group preferably has two or more hetero atoms. Examples of the combination of two hetero atoms include a combination of O and N.

[0098] The heterocyclic group is preferably Among them, preferably 2- Azolyl. 2- The oxazolyl group is represented by the following formula: 1 ~R 4 Each independently represents a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms, preferably 1 to 10 carbon atoms. * represents a bonding site. When compound C is a polymer, The azole group may be bonded directly to the carbon atom constituting the main chain or via other functional groups. Examples of other functional groups include alkyl groups having 1 to 12 carbon atoms, alkyl groups having 1 to 12 carbon atoms having an oxygen atom, and alkyl groups having 1 to 12 carbon atoms containing a sulfur atom.

[0099]

[0100] Compound C may contain Homopolymers of monomers containing azole groups may also be Monomers containing azole groups and those containing no Copolymers of azole-based monomers.

[0101] About containing Examples of azole monomers include vinyl Azolines {e.g., vinyl Oxazoline (2-vinyl-2- oxazoline, etc.), vinyl having a substituent Oxazoline [e.g., alkyl-vinyl Oxazoline (e.g., 2-vinyl-4-methyl-2- Oxazoline, 2-vinyl-4,4-dimethyl-2- Oxazoline, 2-vinyl-4-ethyl-2- Oxazoline, 2-vinyl-4-propyl-2- Oxazoline, 2-vinyl-4-butyl-2- Oxazoline, 2-vinyl-5-methyl-2- Oxazoline, 2-vinyl-5-ethyl-2- Oxazoline, 2-vinyl-5-propyl-2- Oxazoline, 2-vinyl-5-butyl-2- Oxazoline and other C1-20 alkyl-vinyl Oxazoline, preferably C1-10 alkyl-vinyl Oxazoline, more preferably mono- or di-C1-4 alkyl-vinyl oxazoline) etc.] etc.}; isopropenyl Azolines {e.g., isopropenyl Oxazoline (2-isopropenyl-2- oxazoline, etc.), isopropenyl having a substituent Oxazoline [e.g., alkyl-isopropenyl Oxazoline (e.g., 2-isopropenyl-4-methyl-2- Oxazoline, 2-isopropenyl-4,4-dimethyl-2- Oxazoline, 2-isopropenyl-4-ethyl-2- Oxazoline, 2-isopropenyl-4-propyl-2- Oxazoline, 2-isopropenyl-4-butyl-2- Oxazoline, 2-isopropenyl-5-methyl-2- Oxazoline, 2-isopropenyl-5-ethyl-2- Oxazoline, 2-isopropenyl-5-propyl-2- Oxazoline, 2-isopropenyl-5-butyl-2- Oxazoline and other C1-20 alkyl-isopropenyl Oxazoline, preferably C1-10 alkyl-isopropenyl Oxazoline, more preferably mono- or di-C1-4 alkyl-isopropenyl oxazoline) etc.] etc.}; and their corresponding allyl Oxazolines, etc.

[0102] Among them, isopropenyl Oxazolines, particularly preferably 2-isopropenyl-2- In this case, compound C has 4,5-dihydro-2-(1-methylvinyl)- The structural unit of the azole group.

[0103] contain The azole group-containing monomers may be used alone or in combination of two or more.

[0104] Compound C contains The ratio of the monomeric structural unit of the azole group is not particularly limited, and may be, for example, 1% by mass or more (eg, 5% by mass or more), preferably 10% by mass or more, and more preferably 15% by mass or more, relative to the entire compound C.

[0105] In particular, relative to the entire compound C, based on the The ratio of the structural unit of the azole group monomer may be 20% by mass or more, preferably 30% by mass or more, more preferably 40% by mass or more (eg 45% by mass or more), or 50% by mass or more (eg 60% by mass or more, preferably 70% by mass or more).

[0106] Not included Examples of monomers containing azole groups can be The use of the azole-based polymer is appropriately selected without particular limitation, and examples thereof include: styrene monomers or aromatic vinyl monomers, for example, styrene, α-alkylstyrene (for example, α-C1-4 alkylstyrene such as α-methylstyrene), alkylstyrene (for example, C1-4 alkylstyrene such as vinyltoluene), halogenated styrene (for example, chlorostyrene, etc.), etc.]; vinyl esters (for example, vinyl acetate, vinyl propionate, etc.); unsaturated nitriles (for example, acrylonitrile, methacrylonitrile, etc.); vinyl ethers (for example, alkyl vinyl ethers such as methyl vinyl ether and ethyl vinyl ether, etc.); amide-containing [e.g., (meth)acrylamide, N-substituted (meth)acrylamide (e.g., N-alkyl (meth)acrylamide such as N-methyl (meth)acrylamide)]; [e.g., olefin monomers (e.g., olefins (e.g., C2-10 olefins such as ethylene, propylene, 1-butene, isobutylene, 1-octene)]; [e.g., halogen-containing monomers (e.g., halogenated C2-10 olefins such as vinyl chloride, vinylidene chloride, vinyl fluoride); [e.g., (meth)acrylic acid, alkyl (meth)acrylates [e.g., methyl (meth)acrylate, ethyl (meth)acrylate, (meth)acrylates such as n-propyl (meth)acrylate, isopropyl (meth)acrylate, n-butyl (meth)acrylate, isobutyl (meth)acrylate, sec-butyl (meth)acrylate, tert-butyl (meth)acrylate, pentyl (meth)acrylate, n-hexyl (meth)acrylate, 2-ethylhexyl (meth)acrylate and the like (meth)acrylate C1-20 alkyl esters, etc.], cycloalkyl (meth)acrylates [e.g., cyclohexyl (meth)acrylate and the like (meth)acrylate C3-20 cycloalkyl esters, etc.], aryl (meth)acrylates [e.g., phenyl (meth)acrylate and the like (meth)acrylate C6-20 aryl esters], (meth)acrylates having a hydroxyl group [e.g., hydroxyalkyl (meth)acrylates (e.g., hydroxy C2-10 alkyl (meth)acrylates such as 2-hydroxyethyl (meth)acrylate)], (meth)acrylates having an alkoxy group [e.g., alkoxyalkyl (meth)acrylates (e.g., C1-10 alkoxy C2-10 alkyl (meth)acrylates such as 2-methoxyethyl (meth)acrylate)], glycidyl (meth)acrylate, etc.], etc.

[0107] Not included The azole group-containing monomers may be used alone or in combination of two or more.

[0108] These do not contain Among the monomers containing an azole group, styrene-based monomers can be used particularly preferably.

[0109] In not containing When the monomer containing an azole group includes a styrene monomer, the structural unit derived from the styrene monomer is relative to the structural unit derived from the monomer containing no styrene monomer. The ratio of the structural unit of the azole-based monomer can be, for example, 5% by mass or more (for example, 10% by mass or more), preferably 20% by mass or more (for example, 30% by mass or more), further preferably 40% by mass or more (for example, 50% by mass or more), particularly preferably 60% by mass or more (for example, 70% by mass or more), and can also be 80% by mass or more (for example, 90% by mass or more).

[0110] When using In the case of azole-based monomers, the monomers are derived from The structural unit of the monomer containing azole group is derived from The ratio of the structural units of the monomer of the azole group can be, for example, the former / the latter (mass ratio) = about 99 / 1 to about 5 / 95 (for example, about 98 / 2 to about 10 / 90), preferably about 97 / 3 to about 12 / 88 (for example, about 96 / 4 to about 15 / 85), more preferably about 95 / 5 to about 18 / 82 (for example, about 93 / 7 to about 20 / 80), and usually can be 99 / 1 to 25 / 75 (for example, 98 / 2 to 30 / 70, preferably 95 / 5 to 40 / 60, more preferably 90 / 10 to 45 / 55).

[0111] contain The azole-based compound may be a low molecular weight compound instead of a high molecular weight compound. Examples of low molecular weight compounds include: oxazoline), 2,2'-m-phenylenebis(2- oxazoline), 2,2'-p-phenylenebis(2- oxazoline), 2,2'-p-phenylenebis(4-methyl-2- oxazoline), 2,2'-m-phenylenebis(4-methyl-2- oxazoline), 2,2'-p-phenylenebis(4,4'-dimethyl-2- oxazoline), 2,2'-m-phenylenebis(4,4'-dimethyl-2- oxazoline), 2,2'-ethylenebis(2- oxazoline), 2,2'-tetramethylenebis(2- oxazoline), 2,2'-hexamethylenebis(2- oxazoline), 2,2'-octamethylenebis(2- oxazoline), 2,2'-ethylenebis(4-methyl-2- oxazoline) or 2,2'-biphenylenebis(2- A compound having a divalent group as a structural unit obtained by removing two hydrogen atoms from each of oxazoline and oxazoline.

[0112] (Compound C having a cyclic ether group)

[0113] The cyclic ether group refers to a group in which one or two -CH2- in a cycloalkyl group are substituted with -O-. The number of atoms constituting the ring may be 10 or less.

[0114] Examples of cyclic ether groups include epoxy groups (groups obtained by removing one hydrogen atom from oxirane (oxirane)), oxetane groups (groups obtained by removing one hydrogen atom from oxetane), and tetrahydrofuran groups (groups obtained by removing one hydrogen atom from tetrahydrofuran). Among the compounds C having a cyclic ether group, compounds having an epoxy group are preferred. In addition, the compound C having a cyclic ether group is preferably a polymer.

[0115] Compound C may be a homopolymer of a cyclic ether group-containing monomer, or a copolymer of a cyclic ether group-containing monomer and a non-cyclic ether group-containing monomer.

[0116] When the cyclic ether group is an epoxy group, compound C may be any of a glycidyl ether compound, a glycidyl ester compound, a glycidyl amine compound, a glycidyl imide compound, and an alicyclic epoxy compound. Among them, copolymers of cyclic ether group-containing monomers such as glycidyl ester monomers and ethylene are particularly preferred.

[0117] Examples of the cyclic ether group-containing monomer include epoxy group-containing monomers and oxetane group-containing monomers. The cyclic ether group-containing monomers may be used alone or in combination of two or more.

[0118] Examples of epoxy-containing monomers include glycidyl ether monomers (e.g., α,β-unsaturated glycidyl esters) such as 4-hydroxybutyl glycidyl acrylate; glycidyl ester monomers such as glycidyl acrylate and glycidyl methacrylate; glycidyl amine monomers and glycidyl imide monomers; and alicyclic epoxy monomers such as 3,4-epoxycyclohexylmethyl acrylate and 3,4-epoxycyclohexylmethyl methacrylate, which can be used alone or in combination.

[0119] Examples of the oxetanyl group-containing monomer include 3-oxetanylmethyl (meth)acrylate, 3-methyl-3-oxetanylmethyl (meth)acrylate, 3-ethyl-3-oxetanylmethyl (meth)acrylate, 3-butyl-3-oxetanylmethyl (meth)acrylate, and 3-hexyl-3-oxetanylmethyl (meth)acrylate, and these may be used alone or in combination.

[0120] There is no particular limitation on the monomer not containing an epoxy group, and the above-mentioned monomer not containing an epoxy group can be appropriately used. The substances exemplified in the monomers of the azole group include ethylene, vinyl acetate, methyl acrylate and the like.

[0121] In particular, compound C is preferably a copolymer of ethylene and α,β-unsaturated glycidyl ester. Examples of α,β-unsaturated glycidyl ester include glycidyl acrylate, glycidyl methacrylate, glycidyl ethacrylate, glycidyl itaconate, etc. Two or more of these substances may be used. Among them, glycidyl methacrylate is preferably used.

[0122] The ratio of the structural unit derived from the cyclic ether group-containing monomer is not particularly limited, and may be, for example, 1% by mass or more (eg, 5% by mass or more), preferably 10% by mass or more, and more preferably 15% by mass or more, relative to the entire compound C.

[0123] In particular, the ratio of the structural unit derived from the cyclic ether group-containing monomer to the entire compound C can be set to 20 mass % or more, preferably 30 mass % or more, further preferably 40 mass % or more (for example, 45 mass % or more), and can also be set to 50 mass % or more (for example, 60 mass % or more, preferably 70 mass % or more).

[0124] When a cyclic ether group-containing monomer is used, the ratio of the structural unit derived from the cyclic ether group-containing monomer to the structural unit derived from the non-cyclic ether group-containing monomer may be, for example, the former / the latter (mass ratio) = about 99 / 1 to about 5 / 95 (e.g., about 98 / 2 to about 10 / 90), preferably about 97 / 3 to about 12 / 88 (e.g., about 96 / 4 to about 15 / 85), more preferably about 95 / 5 to about 18 / 82 (e.g., about 93 / 7 to about 20 / 80), and typically 99 / 1 to 25 / 75 (e.g., 98 / 2 to 30 / 70, preferably 95 / 5 to 40 / 60, more preferably 90 / 10 to 45 / 55).

[0125] The acid anhydride group is a monovalent substituent containing *-CO-O-CO-* (* indicates a bonding position).

[0126] Examples of the acid anhydride group include: 20 -CO-O-CO-R 20 (In the above formula, R 20 independently represent an organic group, R 20 A group formed by removing one hydrogen atom from a group consisting of two or more groups (which can be bonded to each other to form a ring).

[0127] Examples of the acid anhydride group include a group obtained by removing one hydrogen atom from succinic anhydride, a group obtained by removing one hydrogen atom from maleic anhydride, a group obtained by removing one hydrogen atom from glutaric anhydride, a group obtained by removing one hydrogen atom from phthalic anhydride, and a group obtained by removing one hydrogen atom from a carboxylic anhydride.

[0128] Examples of the compound having an acid anhydride group include polymers having at least one of these acid anhydride groups, such as maleic anhydride-modified polypropylene.

[0129] The isocyanate group is represented by -N=C=O. Examples of the compound C having an isocyanate group include polyisocyanates.

[0130] The carbodiimide group is a group represented by -N=C=N-. Examples of the compound having a carbodiimide group may include diisopropylcarbodiimide, 1-ethyl-3-[3-(dimethylamino)propyl]carbodiimide, or a cyclic compound.

[0131] <Olefin polymer A>

[0132] The olefin polymer A is a polymer containing 50% by mass or more of a structural unit derived from an olefin having a carbon number of 2 or more and 10 or less (wherein the total amount of the olefin polymer is 100% by mass). Examples of the olefin having a carbon number of 2 or more and 10 or less include ethylene, propylene, 1-butene, 4-methyl-1-pentene, 1-hexene, 1-octene, and 1-decene.

[0133] The olefin polymer A may contain a structural unit derived from a monomer other than an olefin having a carbon number of 2 or more and 10 or less. Examples of monomers other than an olefin having a carbon number of 2 or more and 10 or less include aromatic vinyl monomers such as styrene; unsaturated carboxylic acids such as acrylic acid and methacrylic acid; unsaturated carboxylic acid esters such as methyl acrylate, ethyl acrylate, butyl acrylate, methyl methacrylate, and ethyl methacrylate; vinyl ester compounds such as vinyl acetate; conjugated dienes such as 1,3-butadiene and 2-methyl-1,3-butadiene (isoprene); and non-conjugated dienes such as dicyclopentadiene and 5-ethylidene-2-norbornene.

[0134] The olefin polymer A may be at least one selected from the group consisting of ethylene polymers, propylene polymers, and butene polymers, or a combination of any two or more thereof.

[0135] Ethylene copolymers are polymers containing 50% by mass or more of structural units derived from ethylene, and examples thereof include ethylene homopolymers, ethylene-1-butene copolymers, ethylene-1-hexene copolymers, ethylene-1-octene copolymers, and ethylene-1-butene-1-hexene copolymers. The ethylene copolymer may be a combination of two or more ethylene copolymers.

[0136] The propylene copolymer is a polymer containing more than 50% by mass of structural units derived from propylene, and examples thereof include propylene homopolymers, propylene-ethylene copolymers, propylene-1-butene copolymers, propylene-1-hexene copolymers, propylene-1-octene copolymers, propylene-ethylene-1-butene copolymers, propylene-ethylene-1-hexene copolymers, and propylene-ethylene-1-octene copolymers. The propylene copolymer can be a combination of more than two propylene copolymers. The olefin polymer A is preferably a propylene copolymer.

[0137] The butene copolymer is a polymer containing 50% by mass or more of a structural unit derived from 1-butene, and examples thereof include 1-butene homopolymer, 1-butene-ethylene copolymer, 1-butene-propylene copolymer, 1-butene-1-hexene copolymer, 1-butene-1-octene copolymer, 1-butene-ethylene-propylene copolymer, 1-butene-ethylene-1-hexene copolymer, 1-butene-ethylene-1-octene copolymer, 1-butene-propylene-1-hexene copolymer, and 1-butene-propylene-1-octene copolymer. The butene copolymer may be a combination of two or more butene copolymers.

[0138] The olefin polymer A can be produced by a known polymerization method using a known polymerization catalyst.

[0139] The melt mass flow rate (MFR) of the olefin polymer A measured under the conditions of a temperature of 230° C. or 190° C. and a load of 2.16 kgf in accordance with JIS K7210-2014 is preferably 0.1 g / 10 min or more and 200 g / 10 min or less.

[0140] (additive)

[0141] The composition may contain additives as required. The additives may be at least one selected from the group consisting of stabilizers, antibacterial agents, mildew-proof agents, dispersants, plasticizers, flame retardants, tackifiers, colorants, metal powders, organic powders, inorganic fibers, organic fibers, organic and inorganic composite fibers, inorganic whiskers, and fillers.

[0142] Examples of stabilizers include at least one selected from the group consisting of lubricants, anti-aging agents, heat stabilizers, light stabilizers, weathering agents, metal deactivators, ultraviolet absorbers, light stabilizers, and copper inhibitors. Examples of light stabilizers include hindered amine light stabilizers.

[0143] Examples of the colorant include at least one selected from the group consisting of titanium oxide, carbon black, and organic pigments. Examples of the metal powder include ferrite.

[0144] Examples of organic powders include proteins. Examples of inorganic fibers include glass fibers and metal fibers. Examples of organic fibers include carbon fibers and aramid fibers. Examples of inorganic whiskers include potassium titanate whiskers.

[0145] Examples of the filler include at least one selected from the group consisting of glass beads, glass hollow microspheres, glass flakes, asbestos, mica, calcium carbonate, talc, silica, calcium silicate, hydrotalcite, kaolin, diatomaceous earth, graphite, pumice, hard rubber powder, cotton wool, cork powder, barium sulfate, fluorine-containing resin, cellulose powder and wood powder.

[0146] The composition may contain only one type of the above additives, or may contain a combination of two or more types.

[0147] <Composition of the composition>

[0148] The content of compound C is 0.1 to 100 parts by mass relative to 100 parts by mass of the total of polymer B and compound C. The content of compound C may be 0.2 parts by mass or more, 0.5 parts by mass or more, 1 part by mass or more, 2 parts by mass or more, 5 parts by mass or more, 10 parts by mass or more, 12 parts by mass or more, or 15 parts by mass or more, and may be 90 parts by mass or less, 80 parts by mass or less, or 70 parts by mass or less.

[0149] The ratio of polymer B to compound C in the overall composition can be 0.1 mass % or more, 0.2 mass % or more, 0.5 mass % or more, 1 mass % or more, 2 mass % or more, 3 mass % or more, can be 100 mass %, can be 90 mass % or less, 80 mass % or less, or 70 mass % or more.

[0150] The composition may include an olefinic polymer A. The amount of the olefinic polymer A relative to 100 parts by mass of the polymer B may be 1 part by mass to 2000 parts by mass.

[0151] According to the composition of this embodiment, by including the compound C, although the aliphatic polyester polymer B is included, when it is desired to heat the material in a barrel for a certain period of time or more and then extrude the melt from a die to form a strand, the fluctuation of the outer diameter of the molten strand can be suppressed and the uniformity of the thickness of the strand can be improved.

[0152] The reason for this is not clear, but it is considered that the compound C has a specific functional group and therefore adsorbs the decomposition by-products of the polymer B, thereby suppressing the decomposition of the polymer B caused by the decomposition by-products of the polymer B.

[0153] In addition, in compound C having In the case of a heterocyclic group having two or more hetero atoms such as an oxazolyl group, the generation of odor after melting can also be suppressed.

[0154] (Method for producing composition)

[0155] The composition I can be obtained by melt-kneading the raw material components. The composition can be obtained by melt-kneading the polymer B, the compound C, and additives added as needed, the olefin polymer A, and the like.

[0156] The kneading temperature (set temperature of the kneading machine) is preferably set to 150° C. to 300° C., and more preferably set to 170° C. to 280° C. The kneading temperature may be 210° C. or higher.

[0157] When the composition contains an olefin polymer, the olefin polymer A, polymer B, compound C and additives added as needed may be melt-kneaded all at once to produce the composition, or a part of the materials may be melt-kneaded first, and then the remaining materials may be added and melt-kneaded.

[0158] (Method for producing molded article of composition)

[0159] A molded body of the composition having a desired shape can be obtained by using a known resin molding method such as injection molding, extrusion molding, vacuum molding, compressed air molding, press molding, foam molding, blow molding, rotational molding, or the like.

[0160] It is particularly preferred to extrude the molten composition from a die to form a strand.

[0161] The diameter of the die head can be set to 5 mm to 200 mm. The melt temperature during extrusion can be set to 150°C to 300°C.

[0162] Furthermore, the above composition can be laminated with other materials such as other resins, metals, paper, leather, etc. to obtain a multilayer structure.

[0163] The surface of the molded article of the composition of the present invention may be subjected to a surface treatment. Examples of the surface treatment method include embossing treatment, corona discharge treatment, flame treatment, plasma treatment, and ozone treatment.

[0164] The above composition can be widely used as a resin material.

[0165] Examples of uses of the resin composition of the present invention include fiber materials, exterior structural members, furniture and interior decoration members, home appliance members, toy members, gardening members, automobile parts, and packaging materials. Examples of the fiber material include clothing fabric members, interior fabric members, and industrial fiber members. Examples of the exterior structural members include garage members, fence members, door leaf members, door post members, column members, bicycle shed members, deck members, sunroom members, roof members, terrace members, handrail members, shading members, and canopy members. Examples of furniture and interior decoration members include sofa members, table members, chair members, bed members, wardrobe members, cabinet members, and dressing table members. Examples of home appliance members include watch members, mobile phone members, and white appliance members. Examples of toy members include plastic model members, three-dimensional model members, and video game console members. Examples of gardening members include flower trough members, vase members, and flower pot members. Examples of automobile members include bumper members, instrument panel members, and airbag cover members. Examples of packaging materials include food packaging materials, fiber packaging materials, and sundries packaging materials. In addition, examples of other uses include monitor parts, office automation (OA) equipment parts, medical parts, drain pans, toilet parts, bottles, containers, snow removal parts, and various building parts.

[0166] Example

[0167] The present invention will be described below using Examples and Comparative Examples. The olefin polymer A, aliphatic polyester polymer B, and compound C used in the Examples and Comparative Examples are shown below.

[0168] (1) Polymer A

[0169] (A-1) Propylene homopolymer

[0170] MFR (230°C, 2.16kg load): 7g / 10min

[0171] Melting point (Tm): 163°C

[0172] (2) Polymer B

[0173] (B-1) Poly(3-hydroxybutyrate-co-3-hydroxyhexanoate)

[0174] Structural formula: Formula (BI-3)

[0175] Content of comonomer (3HH) component (mol %): 0.4 mol %

[0176] Weight average molecular weight (Mw): 397800

[0177] MFR (190°C, 2.16kg load): 8g / 10min

[0178] MFR (210°C, 2.16kg load): 171g / 10min

[0179] Melting point (Tm): 175°C

[0180] (3) Compound C

[0181] (C-1) contains Azolyl polystyrene

[0182] (Trade name) EPOCROS RPS-1005: Made by Nippon Shokubai Co., Ltd.

[0183] MFR (230°C, 2.16kg load): 27.3g / 10min

[0184] Molecular weight (Mw): 157780

[0185] Functional groups contained: Azolyl

[0186]

[0187] (C-2) Ethylene-glycidyl methacrylate (E-GMA) copolymer

[0188] (Trade name) BONDFAST BF-E: manufactured by Sumitomo Chemical Co., Ltd.

[0189] MFR (190°C, 2.16kg load): 3g / 10min

[0190] Molecular weight (Mw): 210000

[0191]

[0192] (C-3) Styrene-ethylene-butadiene-styrene copolymer

[0193] (Trade name) Tuftec H1052: Made by Asahi Kasei Corporation

[0194] MFR (230°C, 2.16kg load): 13g / 10min

[0195] Molecular weight (Mw): 104040

[0196] The physical properties of each polymer and composition were measured by the methods shown below.

[0197] (1) Melt flow rate (MFR, unit: g / 10 minutes)

[0198] The measurement was performed according to the method specified in JIS K7210-2014. The measurement temperature was set at 230° C., 210° C., or 190° C., and the load was set at 2.16 kg. The cylinder for melt kneading was made of metal, and the resin was not irradiated with light.

[0199] (2) Weight average molecular weight (Mw)

[0200] The weight average molecular weight (Mw) was calculated based on the measurement results of gel permeation chromatography (GPC). In the GPC measurement, GPC-150C manufactured by Waters was used as a measurement device, an o-dichlorobenzene solution with a polymer concentration of 0.05 wt %, a mixed polystyrene gel column (PSKgelGMH6-HT manufactured by Tosoh Corporation) was used as a column, and the measurement temperature was set to 135°C.

[0201] (3) Melting point of polymer (Tm)

[0202] The measurement was performed according to the method specified in JIS K7121. The measurement was performed under the conditions of a measurement temperature of -50°C to 200°C or -50°C to 250°C and a temperature increase rate of 10°C / min.

[0203] (4) Content of comonomer component of polymer B

[0204] The content of the comonomer component is the molar ratio of repeating units other than 3-hydroxybutyrate (3-hydroxyhexanoate (3HH) or 4-hydroxybutyrate (4HB)) relative to the total number of ester repeating units of hydroxyalkanoate in the polymer B.

[0205] The content of the comonomer component was determined by a method using 1H-NMR spectroscopy described in L. Tripathi., MC Factories, 11, 44 (2012).

[0206] [Measurement conditions]

[0207] Model: Bruker AVANCE600

[0208] Probe: 10mm low temperature probe

[0209] Measuring temperature: 135℃

[0210] Pulse repetition time: 1 second

[0211] Pulse width: 45°

[0212] Cumulative times: 700 times

[0213] Magnetic field strength: 600 MHz

[0214] (5) Volatility

[0215] Using Capilograph 1B manufactured by Toyo Seiki Seisaku-sho, the composition was retained in a barrel at 230°C for 7 minutes, and then a molten strand was constantly extruded from an orifice diameter of 1 mm at 10 mm / min. The strand diameter was evaluated every 0.5 seconds for 50 seconds, and the standard deviation of the strand diameter was evaluated based on the obtained results. The standard deviation of the strand diameter is the fluctuation, and the lower the fluctuation, the higher the stability of the strand diameter.

[0216] (6) Evaluation of odor

[0217] The strands were evaluated for odor. Specifically, using Capilograph 1B manufactured by Toyo Seiki Seisaku-sho, the composition was retained in a barrel at 230°C for 7 minutes, and then the molten strands were constantly extruded from an orifice diameter of 1 mm at 10 mm / min. After the extruded molten strands were solidified, the odor of the molten strands was sensory evaluated in an odorless indoor environment at 23°C. The number of subjects was 3, and when no odor was felt, the evaluation was 1 point, when a weak odor was felt, the evaluation was 2 points, and when a strong odor was felt, the evaluation was 3 points. The odor was evaluated, and the scores of the evaluation results of the 3 subjects were averaged. The lower the score, the weaker the odor.

[0218] (Example 1)

[0219] 94.0% by mass of polymer (A-1), 5% by mass of polymer (B-1) and 1% by mass of component (C-1) were mixed and melt-kneaded using a 15 mm twin-screw extruder KZW15-45MG (manufactured by TECHNOVEL) at a barrel setting temperature of 215° C., a screw speed of 500 rpm and an extrusion rate of about 4 kg / hour to obtain a composition. The volatility of the composition was evaluated.

[0220] (Example 2)

[0221] The same procedure as in Example 1 was carried out except that 85.0% by mass of the polymer (A-1), 5% by mass of the polymer (B-1), and 10% by mass of the component (C-1) were mixed.

[0222] (Example 3)

[0223] The same procedure as in Example 1 was carried out except that 94.0% by mass of the polymer (A-1), 5% by mass of the polymer (B-1), and 1% by mass of the component (C-2) were mixed.

[0224] (Comparative Example 1)

[0225] The same procedure as in Example 1 was carried out except that 94.0% by mass of the polymer (A-1), 5% by mass of the polymer (B-1), and 1% by mass of the component (C-3) were mixed.

[0226] Table 1 shows the final composition and evaluation results of each composition.

[0227] [Table 1]

[0228]

Claims

1. A composition comprising a polymer B and a compound C, wherein: The polymer B is an aliphatic polyester, The content of the compound C is greater than or equal to 0.1 parts by mass and less than 100 parts by mass relative to 100 parts by mass of the total of the polymer B and the compound C, The compound C has at least one functional group selected from the group consisting of a heterocyclic group having two or more hetero atoms, a cyclic ether group, an acid anhydride group, an isocyanate group, and a carbodiimide group.

2. The composition according to claim 1, wherein The heterocyclic group has two or more hetero atoms.

3. The composition according to claim 2, wherein The two or more hetero atoms include a nitrogen atom and an oxygen atom.

4. The composition according to any one of claims 1 to 3, wherein The heterocyclic group is Azolyl.

5. The composition according to any one of claims 1 to 4, wherein The cyclic ether group is an epoxy group.

6. The composition according to any one of claims 1 to 5, wherein The compound C is a polymer having a weight average molecular weight Mw of 5000 or more.

7. The composition according to any one of claims 1 to 6, wherein The compound C is a polymer having the functional group in a side chain.

8. The composition according to any one of claims 1 to 7, wherein The polymer B is a poly(3-hydroxyalkanoate) polymer having a melting point of 150° C. or higher.

9. The composition according to any one of claims 1 to 8, wherein The composition further comprises an olefinic polymer A.

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