Viscous oily composition

Abstract

To provide a viscous oily composition having proper viscosity and further exhibiting superior stability over time.SOLUTION: A viscous oily composition comprising the following components (A) to (C): (A) an oil-soluble polyurethane, (B) glyceryl behenate / eicosanedioate and / or glyceryl tribehenate / isostearate / eicosanedioate, and (C) a liquid oil.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a viscous oily composition. [Background technology]

[0002] Thickened oily compositions are used in a wide range of fields, including pharmaceuticals, cosmetics, inks, and greases, and many gelling agents, such as waxes and hydroxy fatty acids, have been developed. However, these gelling agents are selective in the oils they can thicken, and have problems such as the sedimentation of waste liquid or gel over time. To solve these problems, a technique for combining multiple oily gelling agents has been disclosed.

[0003] For example, Patent Document 1 proposes an oil-based styling cosmetic containing a higher fatty acid ester and an oligomer ester in order to provide an oil-based styling cosmetic having good long-term storage stability. Furthermore, Patent Document 2 proposes an oil-based detergent containing a dextrin fatty acid ester and an ester compound obtained by esterifying a polyhydric alcohol, a fatty acid and / or a hydroxy fatty acid having 8 to 30 carbon atoms, and a dibasic carboxylic acid having 12 to 30 carbon atoms, in order to provide an oil-based detergent having appropriate viscosity and excellent stability over time at high temperatures. Furthermore, Patent Document 3 proposes a cosmetic transparent gel preparation that contains a specific esterification reaction product, 12-hydroxystearic acid, and an oil component in order to provide a cosmetic transparent gel preparation that maintains excellent hardness over time. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-117691 [Patent Document 2] Japanese Patent Application Laid-Open No. 2012-126664 [Patent Document 3] WO2010 / 029769 Pamphlet Summary of the Invention [Problem to be solved by the invention]

[0005] However, although the techniques of Patent Documents 1 to 3 have developed oily compositions that suppress separation and breakage over time, they are not sufficient in terms of having an appropriate viscosity and excellent stability over time at room temperature.

[0006] Therefore, a main object of the present invention is to provide a viscous oily composition that has an appropriate viscosity and excellent stability over time. [Means for solving the problem]

[0007] In view of the above problems, the present inventors conducted extensive research. First, they focused on oil-soluble polyurethanes having a polyurethane structure as oil-based gelling agents. Although oil-soluble polyurethanes have excellent gelling ability, it was necessary to improve the deterioration of texture over time in oil systems containing a large amount of vegetable oils. Therefore, they conducted research to further improve the texture over time while maintaining good viscosity and stability over time, such as separation and drainage. As a result, they found that a viscous oil-based composition containing an oil-soluble polyurethane and glyceryl behenate / eicosadioate or glyceryl tri(behenate / isostearate / eicosadioate) exhibits significantly excellent thickening properties and stability over time.

[0008] That is, the present invention is as described below. [1] The following components (A) to (C); (A) Oil-soluble polyurethane (B) Glyceryl behenate / eicosanedioate and / or glyceryl tribehenate / isostearate / eicosanedioate (C) Liquid oil The present invention provides a viscous oily composition containing the above. [2] The viscous oily composition according to [1] is provided, wherein the component (A) is a polyurethane having (a1) a hydrophobic portion and (a2) a hydrophilic portion, wherein the (a1) hydrophobic portion contains a structural unit derived from an isocyanate compound, and the (a2) hydrophilic portion contains a structural unit derived from a low-molecular-weight diol. [3] The viscous oily composition according to [2], wherein the isocyanate compound is hexamethylene diisocyanate. [4] The viscous oily composition according to [1] or [2], wherein the mass ratio (A) / (B) of the component (A) to the component (B) is 0.04 to 0.4. [5] The viscous oily composition according to [1] or [2], wherein the content of vegetable oil in the component (C) is 50% by mass or more. [6] The viscous oily composition according to [1] or [2], which has a viscosity of 1,000 to 50,000 mPa·s at 30°C. [7] Provided is a property stabilizer for oil-based compositions, which comprises, as active ingredients, component (A) an oil-soluble polyurethane and component (B) glyceryl (behenate / eicosanedioate) and / or glyceryl tri(behenate / isostearate / eicosanedioate). [Effects of the Invention]

[0009] According to the present invention, a viscous oily composition having excellent thickening properties and stability over time can be provided. DETAILED DESCRIPTION OF THE INVENTION

[0010] Preferred embodiments of the present invention will be described in detail. However, the present invention is not limited to the following preferred embodiments and can be freely modified within the scope of the present invention. In this specification, percentages are expressed by mass unless otherwise specified. In addition, in this specification, when a numerical range is expressed using "to", the range includes both end values. Furthermore, the upper limit (less than or equal to) and the lower limit (more than or equal to) of each numerical range (to) can be arbitrarily combined as desired.

[0011] The oil-soluble polyurethane (A) used in the present invention can be any polyurethane that is soluble in an oily component, but is preferably one that is soluble in at least 1% of cetyl 2-ethylhexanoate at 30° C. The structure of the oil-soluble polyurethane is not particularly limited, but from the viewpoint of thickening properties, it is preferable that the polyurethane has a hydrophobic portion (a1) and a hydrophilic portion (a2).

[0012] The (a1) hydrophobic portion preferably contains a structural unit derived from an isocyanate compound, such as 1,6-hexamethylene diisocyanate, 1,3-bis(isocyanatomethyl)benzene, 1,3-bis(isocyanatomethyl)cyclohexane, 2,4-toluene diisocyanate, or 2,6-toluene diisocyanate. Of these, 1,6-hexamethylene diisocyanate is preferred from the viewpoint of thickening properties.

[0013] From the viewpoint of thickening properties, the (a1) hydrophobic portion preferably further contains a structural unit derived from a hydrogenated polyolefin polyol. Examples of hydrogenated polyolefin polyols include hydrogenated polybutadiene polyols and hydrogenated polyisoprene polyols, and among these, hydrogenated polybutadiene diols are preferred.

[0014] From the viewpoint of thickening properties, the (a1) hydrophobic portion preferably further contains a structural unit derived from a dimer diol. Examples of dimer diols include dimer dilinoleyl alcohol and dimer dioleyl alcohol, with dimer dilinoleyl alcohol being preferred and hydrogenated dimer dilinoleyl alcohol being particularly preferred.

[0015] From the viewpoint of thickening, the (a2) hydrophilic portion preferably contains a structural unit derived from a low-molecular-weight diol, such as ethylene glycol, propylene glycol, 1,3-butylene glycol, 1,4-butylene glycol, or diethylene glycol, with ethylene glycol and 1,4-butylene glycol being preferred.

[0016] Suitable embodiments of the oil-soluble polyurethane as component (A) include the following (i) and (ii): In this specification, "terminal" means "both terminals". (i) (a) Hydrogenated polybutadiene with isocyanate groups at the ends and (b) HO-R 3 -OH(in the formula, R 3 represents a linear or branched C2-C6 alkylene group which may have an ether bond), (ii) (c) Hydrogenated polybutadiene having terminal hydroxyl groups, (d) Diisocyanate compound, and (b) HO-R 3 -OH(R in the formula 3 represents a linear or branched C2-C6 alkylene group which may have an ether bond),

[0017] (a) is not particularly limited as long as it is a hydrogenated polybutadiene having an isocyanate group at its terminal, for example, a compound represented by the following general formula (1):

[0018] [ka]

[0019] (In the formula, R 1 , R 2 are each independently a C1-C6 alkylene group, n is an integer of 10 to 100, and n1 and n2 each independently represent 0 or 1.

[0020] R 1 , R 2are each independently the same or different and represent a C1 to C6 alkylene group, and the alkylene may be linear or branched. Examples of the C1 to C6 alkylene group include methylene, ethylene, n-propylene, n-butylene, n-pentylene, and n-hexylene. R 1 The alkylene group in R is preferably a C1 to C2 alkylene group. 2 The alkylene group is preferably a C5 to C6 alkylene group. The alkylene group is preferably linear. n represents an integer of 10 to 100, and more preferably, n is in the range of 15 to 55. n1 and n2 are each independently the same or different and represent 0 or 1.

[0021] There are various types of structures of the repeating unit "C4H8" in the hydrogenated polybutadiene portion (general formula (6) below) of general formula (1), as shown in the following general formulas (7a) to (7d).

[0022] [ka]

[0023] [ka]

[0024] The hydrogenated polybutadiene portion in the hydrogenated polybutadiene having an isocyanate group at its terminal may consist of only one type of repeating unit as exemplified above, or may contain two or more types of repeating units arranged regularly or randomly. The three-dimensional structures of the repeating units "C4H8" constituting the hydrogenated polybutadiene portion (general formula (6) above) of general formula (1) may be the same or different, and all structures of the hydrogenated polybutadiene portion represented by general formula (6) are encompassed by the present invention. An example of the hydrogenated polybutadiene having an isocyanate group at its terminal, represented by general formula (1), is a compound represented by the following general formula (2).

[0025] [ka]

[0026] (wherein, in the formula (2), n represents an integer of 10 to 100). The compound of general formula (2) is a hydrogenated polybutadiene having an isocyanate group at the end of the general formula (1), 1 is an ethylene group, R 2 corresponds to the case where n1=n2=1, where n1 is a hexamethylene group.

[0027] (b) HO-R 3 -OH(in the formula, R 3 represents a linear or branched C2 to C6 alkylene group which may have an ether bond), examples of the glycol represented by the formula (1) include ethylene glycol (HOCH2CH2OH), propylene glycol (HOCH2CH(OH)CH3), 1,3-butylene glycol (HOCH2CH2CH(OH)CH3), 1,4-butylene glycol (HOCH2CH2CH2CH2OH), and diethylene glycol (HOCH2CH2OCH2CH2OH, general formula (5) below).

[0028] [ka]

[0029] (c) Hydrogenated polybutadiene having terminal hydroxyl groups is not particularly limited, but examples thereof include compounds represented by the following general formula (3).

[0030] [ka]

[0031] (wherein n represents an integer of 10 to 100)

[0032] In the general formula (3), the hydrogenated polybutadiene moiety (general formula (6)) has the same meaning as above.

[0033] (d) Examples of diisocyanate compounds include 1,6-hexamethylene diisocyanate, 1,3-bis(isocyanatomethyl)benzene, 1,3-bis(isocyanatomethyl)cyclohexane, 2,4-toluene diisocyanate, and 2,6-toluene diisocyanate. Among these, 1,6-hexamethylene diisocyanate represented by the following general formula (4) is preferred.

[0034] [ka]

[0035] (i): When producing a polyurethane by polyaddition of (a) a hydrogenated polybutadiene having an isocyanate group at its terminal with (b) a glycol represented by HO-R3-OH (where R3 represents a linear or branched C2-C6 alkylene group optionally having an ether bond), the molar ratio of (a):(b) is preferably 1:4 to 4:1, more preferably 2:3 to 3:2, even more preferably 4:5 to 4:3, and still more preferably 9:10 to 10:9. In this case, the weight-average molecular weight (Mw) of (a) is preferably 1,000 to 3,000.

[0036] (ii) When a polyurethane is produced by reacting (c) a hydrogenated polybutadiene having terminal hydroxyl groups, (d) a diisocyanate compound, and (b) a glycol represented by HO-R3-OH (wherein R3 represents a linear or branched C2-C6 alkylene group which may have an ether bond), the molar ratio of (c):(b) is preferably 1:4 to 4:1, more preferably 2:3 to 3:2, even more preferably 4:5 to 4:3, and still more preferably 9:10 to 10:9.

[0037] The weight average molecular weight (Mw) of the polyurethane obtained in (i) or (ii) is preferably 10,000 to 150,000, more preferably 15,000 to 130,000, and even more preferably 20,000 to 110,000.

[0038] Specific examples of component (A) include polyurethane-79, (HDI / trimethylolhexyl lactone) crosspolymer, (hydrogenated polybutadiene / glycol / HDI) copolymer, and the like.

[0039] Examples of commercially available products of component (A) include Oilkemia 5S polymer (manufactured by Rubrizol, INCI name: tri(caprylic / capric)glyceryl, polyurethane-79) and Oilkemia 5S CC polymer (manufactured by Rubrizol, INCI name: tri(caprylic / capric)glyceryl, hydrogenated polyolefin (C6-20), (HDI / trimethylolhexyllactone) crosspolymer).

[0040] The component (A) used in the present invention is not particularly limited, but from the viewpoint of thickening properties, a (HDI / trimethylolhexyllactone) crosspolymer or a (hydrogenated polybutadiene / glycol / HDI) copolymer is preferred, and a (HDI / trimethylolhexyllactone) crosspolymer is more preferred.

[0041] The content of component (A) used in the present invention is not particularly limited, but the lower limit, calculated as a pure content, of the total amount of the viscous oily composition is preferably 0.04 mass% (hereinafter referred to as %) or more, more preferably 0.08% or more, and even more preferably 0.12% or more. The upper limit is preferably 0.4% or less, more preferably 0.3% or less, and even more preferably 0.2% or less. The range is preferably 0.04 to 0.4%, more preferably 0.08 to 0.3%, and even more preferably 0.12 to 0.2%. This range is more preferable in terms of thickening properties.

[0042] Component (B) used in the present invention is glyceryl (behenate / eicosandioate) and / or glyceryl tri(behenate / isostearate / eicosandioate). Glyceryl behenate / eicosandioate is an ester of glycerin and a mixed fatty acid consisting of behenic acid and eicosandioic acid, while glyceryl tri(behenate / isostearate / eicosandioate) is a triester of glycerin and a mixture of behenic acid, isostearic acid, and eicosandioic acid. Commercially available products include Nomcort HK-G as glyceryl (behenate / eicosandioate) and Nomcort SG as glyceryl tri(behenate / isostearate / eicosandioate) (both manufactured by Nisshin Oillio Group, Ltd.). Component (B) used in the present invention is not particularly limited, but glyceryl (behenate / eicosandioate) is preferred from the viewpoint of stability over time.

[0043] The content of component (B) used in the present invention is not particularly limited, but the lower limit is preferably 0.3% or more, more preferably 0.5% or more, and even more preferably 1% or more, based on the total amount of the viscous oily composition. The upper limit is preferably 4% or less, more preferably 2% or less, and even more preferably 1.5% or less. The range is preferably 0.3 to 4%, more preferably 0.5 to 2%, and even more preferably 1 to 1.5%. This range is more preferable in terms of stability over time.

[0044] In the present invention, the mass ratio (A) / (B) of the component (A) to the component (B) is not particularly limited, but the lower limit is preferably 0.04 or more, more preferably 0.08 or more, and even more preferably 0.12 or more. The upper limit is preferably 0.4 or less, more preferably 0.25 or less, and even more preferably 0.2 or less. The range is preferably 0.04 to 0.4, more preferably 0.08 to 0.25, and even more preferably 0.12 to 0.2. This range is preferable in terms of thickening properties and stability over time.

[0045] In the present invention, the total content of the components (A) and (B), (A) + (B), is not particularly limited, but the lower limit is preferably 1% or more, more preferably 1.1% or more, and even more preferably 1.2% or more, relative to the total amount of the viscous oily composition. The upper limit is preferably 2.5% or less, more preferably 2.2% or less, and even more preferably 2% or less. The range is preferably 1 to 2.5%, more preferably 1.1 to 2.2%, and even more preferably 1.2 to 2%. This range is preferred in terms of thickening properties and stability over time.

[0046] The liquid oil (component (C)) used in the present invention refers to an oil agent that has fluidity at 25° C., and is not particularly limited. Examples include hydrocarbons, fats and oils, ester oils, higher alcohols, silicone oils, fluorine-containing oils, lanolin derivatives, and the like, regardless of whether they are volatile or non-volatile and whether they are derived from animal oils, vegetable oils, synthetic oils, or the like.

[0047] Specific examples of the component (C) liquid oil include hydrocarbon oils such as isododecane, isohexadecane, light liquid isoparaffin, liquid paraffin, heavy liquid isoparaffin, α-olefin oligomer, squalane, polyisobutylene, and polybutene; vegetable oils such as olive oil, castor oil, mink oil, macadamia nut oil, avocado oil, medusa oil, and rice bran oil;Jojoba oil, diisobutyl adipate, 2-hexyldecyl adipate, di-2-heptylundecyl adipate, alkyl glycol monoisostearate, isocetyl isostearate, trimethylolpropane triisostearate, ethylene glycol di-2-ethylhexanoate, neopentyl glycol di-2-ethylhexanoate, trimethylolpropane tri-2-ethylhexanoate, pentaerythritol tetra-2-ethylhexanoate, cetyl 2-ethylhexanoate, oleyl oleate, octyldodecyl oleate oleate, decyl oleate, neopentyl glycol dicaprate, propylene glycol dicaprate, triethyl citrate, 2-ethylhexyl succinate, isocetyl stearate, butyl stearate, diisopropyl sebacate, di-2-ethylhexyl sebacate, cetyl lactate, myristyl lactate, isopropyl palmitate, 2-ethylhexyl palmitate, 2-hexyldecyl palmitate, 2-heptylundecyl palmitate, dipentaerythritol fatty acid esters, isononyl isononanoate, isotope isononanoate Decyl myristate, isopropyl myristate, isopropyl palmitate, 2-octyldodecyl myristate, 2-hexyldecyl myristate, myristyl myristate, hexyldecyl dimethyloctanoate, ethyl laurate, hexyl laurate, 2-ethylhexyl methoxycinnamate, diisostearyl malate, glyceryl tri-2-ethylhexanoate, glyceryl tri(caprylate / caprate), glyceryl tricaprate, glyceryl triisostearate, diglyceryl diisostearate, diglyceryl triisostearate Ester oils such as ceryl, diglyceryl tetraisostearate, decaglyceryl decaisostearate, glyceryl triisopalmitate, glyceryl trimyristate, diglyceryl myristate isostearate, tritridecyl trimellitate, N-lauroyl-L-glutamic acid-2-octyldodecyl ester, and N-lauroyl-L-glutamic acid di(phytostearyl-2-octyldodecyl)ester; higher alcohols such as oleyl alcohol, isostearyl alcohol, octyldodecanol, and decyltetradecanol;Examples of the oil include silicone oils such as low-polymerization dimethylpolysiloxane, high-polymerization dimethylpolysiloxane, methylphenylpolysiloxane, decamethylcyclopentasiloxane, octamethylcyclotetrasiloxane, and fluorine-modified organopolysiloxane; fluorine-based oils such as perfluorodecane, perfluorooctane, and perfluoropolyether; and lanolin derivatives such as lanolin acetate, lanolin fatty acid isopropyl, and lanolin alcohol. Component (C) can be used by appropriately selecting one or more of these.

[0048] Component (C) used in the present invention is not particularly limited, but because of the significant effect on stability over time, particularly stability over time with respect to texture, it preferably contains at least vegetable oil, more preferably vegetable oil and hydrocarbon oil, and even more preferably vegetable oil, hydrocarbon oil, and ester oil (excluding vegetable oil). In the present invention, the vegetable oil content in component (C) is preferably 50% or more, more preferably 70% or more.

[0049] The content of component (C) used in the present invention, based on the total amount of the viscous oily composition, is preferably 50% or more, more preferably 70% or more, and even more preferably 90% or more. The upper limit is preferably 99.5% or less, more preferably 99% or less. The range is preferably 50 to 99.5%, more preferably 70 to 99%, and even more preferably 90 to 99%. This range is more preferable in terms of thickening properties and stability over time.

[0050] The viscous oily composition of the present invention has a continuous phase of an oil component and does not contain water, or if it does contain water, the amount is less than 1%. The viscous oily composition of the present invention is preferably in an anhydrous form, and may contain, in addition to the above-mentioned components (A) to (C), an oily component, powder, surfactants for powder dispersion and texture adjustment, UV absorbers, moisturizers, anti-fading agents, antioxidants, anti-foaming agents, cosmetic ingredients, preservatives, fragrances, etc., as appropriate, within the range that does not impair the effects of the present invention.

[0051] Oily components that can be contained in the viscous oily composition of the present invention include, regardless of their origin, animal oil, vegetable oil, synthetic oil, etc., solid oils and semi-solid oils such as higher alcohols, fluorine-based oils, and oily gelling agents. Specific examples include higher alcohols such as stearyl alcohol, cetyl alcohol, lauryl alcohol, oleyl alcohol, isostearyl alcohol, and behenyl alcohol, silicones such as decamethylcyclopentasiloxane and fluorine-modified organopolysiloxane, fluorine-based oils such as perfluorodecane, perfluorooctane, and perfluoropolyether, and oily gelling agents such as starch fatty acid esters, 12-hydroxystearic acid, and calcium stearate.

[0052] The powder that can be contained in the viscous oily composition of the present invention is not particularly limited by its shape (e.g., spherical, plate-like, spindle-like, needle-like, etc.), its particle size (e.g., fine particles, pigment-grade, etc.), its particle structure (e.g., porous, non-porous, etc.), and includes inorganic powders, organic powders, composite powders, etc., and one or more of these can be used. Furthermore, one or more of these powders may be used as composites, or they may be surface-treated by a known method using a triethoxyalkylsilane treatment agent, an organic titanate treatment agent, a silicone treatment agent, a metal soap, a surfactant, an oil, a hydrocarbon, etc.

[0053] The surfactant that can be contained in the viscous oily composition of the present invention is not particularly limited and includes nonionic surfactants, anionic surfactants, cationic surfactants, amphoteric surfactants, etc.

[0054] Examples of ultraviolet absorbers that can be contained in the viscous oily composition of the present invention include ethylhexyl methoxycinnamate, ethylhexyl salicylate, dimethyldiethylbenzalmalonate, diethylaminohydroxybenzoylhexylbenzoate, methylenebisbenzotriazolyltetramethylbutylphenol, 2,4-bis{[4-(2-ethylhexyloxy)-2-hydroxy]-phenyl}-6-(4-methoxyphenyl)-1,3,5-triazine, 2,4,6-tris[4-(2-ethylhexyloxycarbonyl)anilino]-1,3,5 -triazine, octocrylene, 4-tert-butyl-4'-methoxydibenzoylmethane, etc.; moisturizing agents such as polyhydric alcohols, proteins, mucopolysaccharides, collagen, elastin, keratin, etc.; antioxidants such as α-tocopherol, ascorbic acid, etc.; cosmetic ingredients such as vitamins, anti-inflammatory agents, herbal medicines, etc.; preservatives such as parahydroxybenzoic acid esters, phenoxyethanol, 1,2-pentanediol, 1,2-hexanediol, 1,2-octanediol, ethylhexylglycerin, etc.

[0055] The viscous oily composition of the present invention can be produced by a conventional method and can be in the form of a gel, a multi-layered composition, or the like. Depending on the combination with a container, it can also be in the form of a mist, a foam aerosol, or the like. Specifically, from the viewpoint of stability over time, a gel composition is preferred.

[0056] The viscosity of the viscous oil composition of the present invention was measured using a Brookfield rotational viscometer after storing the prepared viscous oil composition for one day at 30° C. There are no particular limitations on the viscosity of the viscous oil composition of the present invention, but a viscosity of 1,000 to 50,000 mPa s at 30° C. is preferred in terms of excellent thickening properties.

[0057] The viscous oily composition of the present invention can be used as cosmetics, topical skin preparations, pharmaceuticals, food and beverages, industrial products, etc. Furthermore, the viscous oily composition of the present invention can be used to produce cosmetics, topical skin preparations, pharmaceuticals, food and beverages, industrial products, etc. Furthermore, it is possible to provide cosmetics, topical skin preparations, pharmaceuticals, food and beverages, industrial products, etc. that contain the viscous oily composition of the present invention.

[0058] Furthermore, by using component (A) oil-soluble polyurethane and component (B) glyceryl (behenate / eicosadioate) and / or glyceryl tri(behenate / isostearate / eicosadioate) of the present invention, it is possible to improve the stability over time of a viscous oil-based composition containing liquid oil, and the composition can be used as a property stabilizer for oil-based compositions containing component (A) oil-soluble polyurethane and component (B) glyceryl (behenate / eicosadioate) and / or glyceryl tri(behenate / isostearate / eicosadioate) as active ingredients.

[0059] The present invention can also employ the following configuration. [1] The following components (A) to (C): (A) Oil-soluble polyurethane (B) Glyceryl behenate / eicosanedioate and / or glyceryl tribehenate / isostearate / eicosanedioate (C) Liquid oil The viscous oily composition contains: [2] The viscous oily composition according to [1], wherein the component (A) is a polyurethane having (a1) a hydrophobic portion and (a2) a hydrophilic portion, wherein the (a1) hydrophobic portion contains a structural unit derived from an isocyanate compound, and the (a2) hydrophilic portion contains a structural unit derived from a low-molecular-weight diol. [3] The viscous oily composition according to [2], wherein the isocyanate compound is hexamethylene diisocyanate. [4] The viscous oily composition according to any one of [1] to [3], wherein the mass ratio (A) / (B) of the component (A) to the component (B) is 0.04 to 0.4. [5] The viscous oily composition according to any one of [1] to [4], wherein the content of vegetable oil in the component (C) is 50% by mass or more. [6] The viscous oily composition according to any one of [1] to [5] above, which has a viscosity at 30°C of 1,000 to 50,000 mPa·s. [7] This is a property stabilizer for oil-based compositions, containing as active ingredients component (A) an oil-soluble polyurethane and component (B) glyceryl (behenate / eicosanedioate) and / or glyceryl tri(behenate / isostearate / eicosanedioate). [Example]

[0060] The present invention will be described in detail below with reference to examples, but the present invention is not limited to these examples. Examples 1 to 9 and Comparative Examples 1 to 6: Gel-type hair oil (viscous oil composition) Gel-type hair oils were prepared according to the formulations shown in Table 1 below, and their thickening properties and stability over time were evaluated using the methods described below. The results are also shown in Table 1.

[0061] [Table 1] *The pure amount is stated in the examples. (Note 1) OILKEMIA 5S CC POLYMER (purity 5%, manufactured by Rubrizol) (Note 2) Nomcoat HK-G (manufactured by Nisshin Oillio Group) (Note 3) Nomcoat SG (manufactured by Nisshin Oillio Group)

[0062] (Manufacturing method) A. Dissolve ingredients (1) to (11) uniformly at 90°C. The BA was cooled with stirring and filled into a container to obtain a viscous oily composition.

[0063] (Evaluation method) The following evaluation items were evaluated by the following methods. (Evaluation item) Thickening The sample was filled into a No. 8 standard bottle and left to stand at 25°C for 24 hours before evaluating its properties. <Evaluation criteria> (Judgment): (Evaluation) ◎: Viscous and flows slowly when the bottle is tilted ○: Viscous and flows rather quickly when the bottle is tilted △: Viscous but flows quickly ×: No viscosity or no fluidity, and does not flow even when the bottle is tilted.

[0064] (Evaluation item) Stability over time The samples were stored in No. 8 standard bottles at 5°C for one month, and the changes in properties were evaluated. <Evaluation criteria>: Stability over time (Judgment): (Evaluation) ◎: No change from the beginning ○: Waste liquid, gel sedimentation, and poor texture are observed, but are very minor △: Waste liquid, gel sedimentation, and poor texture are observed ×: Sedimentation of waste liquid and gel, and poor texture are observed

[0065] As is clear from the results in Table 1, the gel-type hair oils of Examples 1 to 9 of the present invention were superior in thickening ability and stability over time compared to the gel-type hair oils of Comparative Examples 1 to 6. Furthermore, the viscosity of all of the gel-type hair oils of Examples 1 to 9 was 2,000 to 30,000 mPa s. On the other hand, in Comparative Example 1, which did not contain (B) glyceryl (behenate / eicosandioate) and / or glyceryl tri(behenate / isostearate / eicosandioate), and in Comparative Example 2, which did not contain (A) oil-soluble polyurethane, and in Comparative Example 3, which used hydroxystearic acid instead of (B) glyceryl (behenate / eicosandioate) and / or glyceryl tri(behenate / isostearate / eicosandioate), satisfactory stability over time was not obtained, and in Comparative Examples 4 to 6, which used other oil-based gelling agents, satisfactory thickening properties and stability over time were not obtained.

[0066] Example 10: Gel cosmetic oil Ingredients (%) 1. Glyceryl (behenate / eicosanoate) (Note 2) 0.8 2. (HDI / trimethylolhexyl lactone) crosspolymer (Note 1) 0.1 3. Remaining amount of rice bran oil 4. Olive Fruit Oil 10 5. Jojoba seed oil 10 6. Triethylhexanoin 10 7. Squalane 5 8. Isopropyl myristate 1 9. Ascorbyl tetrahexyldecanoate 1 10. Ceramide NG 0.01 11. Astaxanthin 0.01 12. Tocopherol 0.05 13.Cyclohexane-1,4-dicarboxylic acid bisethoxydiglycol 1 14. BHT 0.05 15.Fragrance 0.2

[0067] (Manufacturing method) A: Heat ingredients (1) to (14) to 90°C and dissolve uniformly. B: Cool A and add ingredient (15) and mix evenly. C: B was filled into a bottle container to obtain a gel-type cosmetic oil.

[0068] The gel cosmetic oil of Example 10 had excellent thickening properties and stability over time. The viscosity of the gel cosmetic oil of Example 10 was 6,400 mPa·s.

[0069] Example 11: Gel cleansing oil Ingredients (%) 1. Glyceryl (behenate / eicosanoate) (Note 2) 1 2. (HDI / trimethylolhexyl lactone) crosspolymer (Note 1) 0.13 3. Remaining amount of rice bran oil 4. Mineral oil 10 5. Cetyl ethylhexanoate 10 6. Triethylhexanoin 10 7. Isopropyl myristate 5 8. PG Dicaprylate 5 9. PEG-8 glyceryl isostearate (Note 4) 18 10.Fragrance 0.1 (Note 4) EMALEX GWIS-108 (manufactured by Nippon Emulsion Co., Ltd.)

[0070] (Manufacturing method) A: Heat ingredients (1) to (9) to 90°C and dissolve uniformly. B: Cool A and add ingredient (10) and mix evenly. C: B was filled into a bottle to obtain a gel-like cleansing oil.

[0071] The gel-type cleansing oil of Example 11 had excellent thickening properties and stability over time. The viscosity of the gel-type cleansing oil of Example 11 was 12,500 mPa·s.

[0072] Example 12: Ointment Ingredients (%) 1. Glyceryl (behenate / eicosanoate) (Note 2) 1 2. (HDI / trimethylolhexyl lactone) crosspolymer (Note 1) 0.12 3. Remaining amount of rice bran oil 4. Mineral oil 30 5. Vaseline 10 6. l-menthol 0.3 7. Tocopheryl acetate 0.6

[0073] (Manufacturing method) A: Heat ingredients (1) to (7) to 90°C and dissolve uniformly. B: A was cooled while being mixed, and filled into a bottle to obtain an ointment.

[0074] The ointment of Example 12 was excellent in thickening properties and stability over time, and had a viscosity of 11,400 mPa·s.

[0075] Example 13: Grease Ingredients (%) 1. Glyceryl (behenate / eicosanoate) (Note 2) 0.5 2. (HDI / trimethylolhexyl lactone) crosspolymer (Note 1) 0.2 3. Remaining liquid paraffin 4. Dimethicone (10CS) 10 5. BHT 0.2

[0076] (Manufacturing method) A: Heat ingredients (1) to (5) to 90°C and dissolve uniformly. B: A was cooled while being mixed, and then filled into a bottle to obtain a grease.

[0077] The grease of Example 13 was excellent in thickening properties and stability over time. The viscosity of the grease of Example 13 was 3,200 mPa·s.

Claims

1. The following components (A) to (C): (A) Oil-soluble polyurethane (B) Glyceryl behenate / eicosanedioate and / or glyceryl tribehenate / isostearate / eicosanedioate (C) Liquid oil A viscous oily composition comprising:

2. The viscous oily composition according to claim 1, wherein the component (A) is a polyurethane having a hydrophobic portion (a1) and a hydrophilic portion (a2), wherein the hydrophobic portion (a1) contains a structural unit derived from an isocyanate compound, and the hydrophilic portion (a2) contains a structural unit derived from a low-molecular-weight diol.

3. 3. The viscous oily composition according to claim 2, wherein the isocyanate compound is hexamethylene diisocyanate.

4. 3. The viscous oily composition according to claim 1, wherein the mass ratio (A) / (B) of the component (A) to the component (B) is 0.04 to 0.

4.

5. The viscous oily composition according to claim 1 or 2, wherein the vegetable oil content in component (C) is 50% by mass or more.

6. 3. The viscous oily composition according to claim 1, which has a viscosity at 30°C of 1,000 to 50,000 mPa·s.

7. A property stabilizer for oily compositions, comprising component (A) an oil-soluble polyurethane and component (B) glyceryl (behenate / eicosanedioate) and / or glyceryl tri(behenate / isostearate / eicosanedioate) as active ingredients.

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