WO2024142844A1 - Cleansing composition - Google Patents

Cleansing composition Download PDF

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Publication number
WO2024142844A1
WO2024142844A1 PCT/JP2023/043975 JP2023043975W WO2024142844A1 WO 2024142844 A1 WO2024142844 A1 WO 2024142844A1 JP 2023043975 W JP2023043975 W JP 2023043975W WO 2024142844 A1 WO2024142844 A1 WO 2024142844A1
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mass
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composition
polymer
fatty acid
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PCT/JP2023/043975
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French (fr)
Japanese (ja)
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理絵 栗延
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株式会社 資生堂
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Publication of WO2024142844A1 publication Critical patent/WO2024142844A1/en

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  • the present invention relates to a cleaning composition.
  • Patent Document 1 discloses a detergent composition that is mild to the skin but has high cleansing properties. More specifically, the detergent composition of Patent Document 1 contains (A) a nonionic surfactant with an HLB of 10 to 18, and (B) a cosurfactant containing at least one selected from the group consisting of alkylglycerols and glycerin fatty acid esters, the cosurfactant being present in an amount of 0.3% by mass or more relative to the mass of the detergent composition, and the total amount of the ionic surfactants being 0.1% by mass or less relative to the mass of the detergent composition.
  • a nonionic surfactant with an HLB of 10 to 18
  • B a cosurfactant containing at least one selected from the group consisting of alkylglycerols and glycerin fatty acid esters, the cosurfactant being present in an amount of 0.3% by mass or more relative to the mass of the detergent composition, and the total amount of the ionic surfactants being 0.1% by mass or less relative to the
  • Patent Document 2 reports a cleansing agent that contains (A) one or more types selected from higher fatty acid salts, (B) a betaine-based amphoteric surfactant, (C) polyethylene glycol with an average degree of polymerization of 200 to 1540, (D) glyceryl monostearate with an HLB of 4 or less (excluding components that fall under component (E)), and (E) a self-emulsifying glyceryl monostearate that contains a fatty acid salt.
  • A one or more types selected from higher fatty acid salts
  • B a betaine-based amphoteric surfactant
  • C polyethylene glycol with an average degree of polymerization of 200 to 1540
  • D glyceryl monostearate with an HLB of 4 or less (excluding components that fall under component (E))
  • E a self-emulsifying glyceryl monostearate that contains a fatty acid salt.
  • solubilized cleansing compositions are known to have problems with poor skin compatibility and poor dirt removal (including makeup removal), and it is considered particularly difficult to achieve both skin compatibility and dirt removal.
  • the first invention aims to improve the above situation, and its purpose is to provide a new cleansing composition that is compatible with the skin and also effectively removes dirt.
  • a second object of the present invention is to provide a novel cleansing composition which is highly soluble in water and leaves skin feeling moisturized after cleansing.
  • the first aspect of the present invention that achieves the above objective is as follows:
  • a cleaning composition comprising: The composition comprises water, a moisturizer, a nonionic surfactant, and a polymer having a structure represented by the following formula (1):
  • R 1 , R 2 and R 3 each independently represent a hydrogen atom or an alkyl group having 1 to 4 carbon atoms
  • A represents an alkylene group having 2 to 4 carbon atoms
  • m and n each independently represent an integer of 1.0 to 50.
  • the number average molecular weight of the polymer is 10,000 or less, and the IOB value of the polymer is 0.4 to 1.8.
  • A is represented by the following formula (2):
  • R 4 is an alkyl group having 1 or 2 carbon atoms.
  • ⁇ Aspect 1-3> The composition according to aspect 1-1 or 1-2, wherein a mass ratio of the moisturizer to the nonionic surfactant (the moisturizer/the nonionic surfactant) is 0.2 or more and 10 or less.
  • ⁇ Aspect 1-4> The composition according to any one of claims 1-1 to 1-3, wherein the HLB value of the nonionic surfactant is 5.0 to 20.0.
  • R 1 , R 2 and R 3 each independently represent a hydrogen atom or an alkyl group having 1 to 4 carbon atoms
  • A represents an alkylene group having 2 to 4 carbon atoms
  • m and n each independently represent an integer of 1.0 to 50.
  • the number average molecular weight of the polymer is 10,000 or less, and the IOB value of the polymer is 0.4 to 1.8. Cleansing composition.
  • A is represented by the following formula (2):
  • R 4 is an alkyl group having 1 or 2 carbon atoms.
  • composition according to aspect 2-1 The composition according to aspect 2-1.
  • ⁇ Aspect 2-3 The composition according to aspect 2-1 or 2-2, wherein the polymer is a random copolymer.
  • ⁇ Aspect 2-4> The composition according to any one of aspects 2-1 to 2-3, further comprising at least one polyhydric alcohol.
  • ⁇ Aspect 2-5> The composition according to any one of aspects 2 to 4, wherein the ratio of the total content of the polyhydric alcohol to the content of the polymer (the polyhydric alcohol:the polymer) is from 5:1 to 80:1.
  • ⁇ Aspect 2-7> The composition according to any one of Aspects 2-1 to 2-6, wherein the higher fatty acid is a fatty acid having 12 to 18 carbon atoms.
  • ⁇ Aspect 2-8> The composition according to any one of Aspects 2-1 to 2-7, which is for cleansing the skin.
  • a novel cleansing composition which is compatible with the skin and removes dirt effectively can be provided.
  • the cleansing composition of the first invention (hereinafter, also simply referred to as the "composition of the first invention”) comprises:
  • the composition comprises water, a moisturizer, a nonionic surfactant, and a polymer having a structure represented by the following formula (1):
  • R 1 , R 2 and R 3 each independently represent a hydrogen atom or an alkyl group having 1 to 4 carbon atoms
  • A represents an alkylene group having 2 to 4 carbon atoms
  • m and n each independently represent an integer from 1.0 to 50.
  • the number average molecular weight of the polymer is 10,000 or less, and the IOB value of the polymer is 0.4 to 1.8. It is a composition.
  • the first composition of the present invention is a composition that is compatible with the skin and also removes dirt well, that is, it is a composition that can achieve both compatibility with the skin and the ability to remove dirt. Furthermore, when the formulation of the first composition of the present invention is, for example, a solubilized system, it is possible to obtain a refreshing, non-sticky feel when used.
  • the first polymer of the present invention which has a specific structure, is amphiphilic and tends to dissolve in an aqueous phase, but also has hydrophobic properties, so it is believed to have good affinity with other ingredients contained in the first composition of the present invention (e.g., moisturizers, nonionic surfactants, etc.) and makeup ingredients, as well as good affinity with the skin.
  • other ingredients contained in the first composition of the present invention e.g., moisturizers, nonionic surfactants, etc.
  • makeup ingredients e.g., as well as good affinity with the skin.
  • the composition of the first invention contains water.
  • water water used in cosmetics, quasi-drugs, etc.
  • the water content is not particularly limited, and may be, for example, 60% by mass or more, 62% by mass or more, 65% by mass or more, 68% by mass or more, 70% by mass or more, 72% by mass or more, 75% by mass or more, 78% by mass or more, 80% by mass or more, or 81% by mass or more, or 95% by mass or less, 94% by mass or less, 93% by mass or less, 92% by mass or less, 91% by mass or less, 90% by mass or less, 89% by mass or less, 88% by mass or less, 87% by mass or less, 86% by mass or less, 85% by mass or less, 84% by mass or less, 83% by mass or less, 82% by mass or less, or 81% by mass or less, based on the entire composition.
  • the first composition of the present invention includes a moisturizer.
  • the moisturizer is not particularly limited, and examples thereof include, but are not limited to, polyhydric alcohols, polyhydric alcohol polymers, chondroitin sulfate, hyaluronic acid, mucoitin sulfate, caronic acid, atelocollagen, cholesteryl-12-hydroxystearate, sodium lactate, bile acid salts, dl-pyrrolidone carboxylates, alkylene oxide derivatives, short-chain soluble collagen, diglycerin (EO)PO adducts, Rosa robur extract, Achillea millefolium extract, and Melilot extract.
  • the moisturizer contains a polyhydric alcohol and/or a polyhydric alcohol polymer.
  • the polyhydric alcohol as a moisturizing agent may include, for example, dihydric alcohols such as ethylene glycol, propylene glycol, trimethylene glycol, 1,2-butylene glycol, and 1,3-butylene glycol, as well as trihydric alcohols such as glycerin.
  • dihydric alcohols such as ethylene glycol, propylene glycol, trimethylene glycol, 1,2-butylene glycol, and 1,3-butylene glycol
  • trihydric alcohols such as glycerin.
  • the polyhydric alcohol polymer serving as a moisturizing agent may contain, for example, dipropylene glycol.
  • the moisturizer preferably includes at least one selected from the group consisting of glycerin, dipropylene glycol, propylene glycol, and 1,3-butylene glycol.
  • the mass ratio of the humectant to the anionic surfactant described below may be, for example, 0.2 or more and 10 or less, and more specifically, for example, 0.2 or more, 0.3 or more, 0.4 or more, 0.5 or more, 0.6 or more, 0.7 or more, 0.8 or more, 0.9 or more, 1.0 or more, 2.0 or more, 3.0 or more, 4.0 or more, or 5.0 or more, and may be 10 or less, 9.0 or less, or 8.0 or less.
  • composition of the first invention contains a nonionic surfactant.
  • the nonionic surfactant is not particularly limited, and examples thereof include POE-sorbitan fatty acid esters (e.g., POE-sorbitan monooleate, POE-sorbitan monostearate, POE-sorbitan monooleate, POE-sorbitan tetraoleate, etc.); POE-sorbitol fatty acid esters (e.g., POE-sorbitol monolaurate, POE-sorbitol monooleate, POE-sorbitol pentaoleate, POE-sorbitol monostearate, etc.); POE-glycerin fatty acid esters (e.g., POE-glycerin fatty acid esters).
  • POE-sorbitan fatty acid esters e.g., POE-sorbitan monooleate, POE-sorbitan monostearate, POE-sorbitan monooleate, POE-sorbitan tetraoleate, etc.
  • POE-monooleates such as serine monostearate, POE-glycerin monoisostearate, and POE-glycerin triisostearate
  • POE-fatty acid esters e.g., POE-distearate, POE-monodioleate, and ethylene glycol distearate
  • POE-alkyl ethers e.g., POE-lauryl ether, POE-oleyl ether, POE-stearyl ether, POE-behenyl ether, POE-2-octyldodecyl ether, and POE-cholestanol ether
  • Pluronic types e.g., Pluronic ( registered trademark), etc.
  • POE ⁇ POP-alkyl ethers e.g., POE ⁇ POP-cetyl ether, POE ⁇ POP-2-decyltetradecyl ether, POE ⁇ POP-monobutyl
  • masu oil monopyroglutamic acid monoisostearate diester POE-hydrogenated castor oil maleic acid, etc.
  • POE-beeswax/lanolin derivatives e.g., POE-sorbitol beeswax, etc.
  • alkanolamides e.g., coconut oil fatty acid diethanolamide, lauric acid monoethanolamide, fatty acid isopropanolamide, etc.
  • POE-propylene glycol fatty acid esters POE-alkylamines
  • POE-fatty acid amides sucrose fatty acid esters; alkylethoxydimethylamine oxide; trioleyl phosphate, etc.
  • POE is an abbreviation for polyoxyethylene
  • POP is an abbreviation for polyoxypropylene
  • the number in parentheses after POE or POP indicates the average number of moles of POE or POP groups added in the compound.
  • the HLB (hydrophile-lipophile balance) value of the nonionic surfactant is not particularly limited and may be, for example, 5.0 to 20.0. More specifically, for example, the HLB value of the nonionic surfactant may be 5.0 or more, 6.0 or more, 7.0 or more, 8.0 or more, 9.0 or more, or 10.0 or more, and may be 20.0 or less, 19.0 or less, 18.0 or less, 17.0 or less, 16.0 or less, 15.0 or less, 14.0 or less, 13.0 or less, 12.0 or less, 11.0 or less, 10.0 or less, 9.0 or less, or 8.0 or less.
  • the HLB value of the nonionic surfactant may be 10.0 to 19.0, and preferably 15.0 to 19.0.
  • the HLB value can be defined by the Griffin method.
  • a surfactant having an oxypropylene structure it can be defined by the Kawakami method.
  • nonionic surfactants having different HLB values can be used.
  • the nonionic surfactant may include a first nonionic surfactant and a second nonionic surfactant having a lower HLB value than the first nonionic surfactant. It is also possible to use three or more types of nonionic surfactants in combination.
  • the weighted average HLB value of the multiple nonionic surfactants is preferably 10 or more, and more preferably 12 or more.
  • the weighted average HLB value of the multiple nonionic surfactants is preferably 18 or less, and more preferably 16 or less.
  • the first nonionic surfactant can have an HLB value of 14.0 or more or an HLB value of 15.0 or more.
  • the second nonionic surfactant can have an HLB value of 6.0 to 13.0.
  • the weighted average HLB value is the average HLB value calculated taking into account the mass proportion of the nonionic surfactant.
  • the first nonionic surfactant and the second nonionic surfactant can each be a polyoxyalkylene glycerin fatty acid ester.
  • the first nonionic surfactant for example, PEG-60 glyceryl isostearate with an HLB value of 16.0 can be used.
  • the second nonionic surfactant for example, PEG-20 glyceryl triisostearate with an HLB value of 8.0, PEG-8 glyceryl isostearate with an HLB value of 10.0, PEG-7 glyceryl coconut oil fatty acid with an HLB value of 13.0, PEG-15 glyceryl isostearate with an HLB value of 13.0, etc. can be used.
  • the content of the nonionic surfactant is not particularly limited, and may be, for example, 0.1 mass% or more, 0.2 mass% or more, 0.5 mass% or more, 0.8 mass% or more, 1.0 mass% or more, 1.2 mass% or more, 1.5 mass% or more, 1.8 mass% or more, or 2.0 mass% or more, and may be 10 mass% or less, 9.0 mass% or less, 8.0 mass% or less, 7.0 mass% or less, 6.0 mass% or less, 5.0 mass% or less, 4.0 mass% or less, or 3.0 mass% or less, relative to the entire composition.
  • the content of the first nonionic surfactant may be, for example, 0.1 mass% or more, 0.5 mass% or more, 0.8 mass% or more, 1 mass% or more, 1.2 mass% or more, or 1.5 mass% or more, and may be 5.0 mass% or less, 4.5 mass% or less, 3.5 mass% or less, or 3.0 mass% or less, relative to the entire composition.
  • the content of the second nonionic surfactant may be, for example, 0.02 mass% or more, 0.05 mass% or more, 0.1 mass% or more, or 0.2 mass% or more, and may be 3.0 mass% or less, 2.5 mass% or less, 2.0 mass% or less, 1.5 mass% or less, 1.0 mass% or less, 0.8 mass% or less, or 0.5 mass% or less, relative to the entire composition.
  • the first polymer of the present invention has a structure represented by the following formula (1):
  • R 1 , R 2 and R 3 are each independently a hydrogen atom or an alkyl group having 1 to 4 carbon atoms.
  • examples of the alkyl group having 1 to 4 carbon atoms include a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, a sec-butyl group and a tert-butyl group.
  • these alkyl groups may further have a substituent.
  • the substituent is not particularly limited, and examples thereof include a halogeno group.
  • R 1 , R 2 and R 3 may each independently be a hydrogen atom, a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, a sec-butyl group, or a tert-butyl group.
  • R 1 is preferably a hydrogen atom, a methyl group, or an ethyl group.
  • m is 2 or more, that is, when a plurality of R 1 are present, each R 1 may be the same or different, and it is particularly preferable that at least a part of R 1 is a methyl group.
  • at least a part of R 1 is a methyl group, it is preferable from the viewpoint of improving the feeling of use of the composition of the first invention, for example.
  • R 1 may be in a state where hydrogen atoms and alkyl groups having 1 to 4 carbon atoms are mixed. That is, a part of R 1 may be a hydrogen atom, and another part may be an alkyl group having 1 to 4 carbon atoms. Preferably, a part of R 1 is a hydrogen atom, and another part is a methyl group.
  • R2 is preferably a hydrogen atom, a methyl group, or an ethyl group, and more preferably a methyl group.
  • R2 may be a mixture of hydrogen atoms and alkyl groups having 1 to 4 carbon atoms. That is, a portion of R2 may be a hydrogen atom, and another portion may be an alkyl group having 1 to 4 carbon atoms. Preferably, a portion of R2 is a hydrogen atom, and another portion is a methyl group.
  • R 3 is preferably a hydrogen atom, a methyl group, or an ethyl group, and more preferably a methyl group.
  • At least one of R2 and R3 is preferably a methyl group.
  • R4 is an alkyl group having 1 or 2 carbon atoms. More specifically, R4 may be a methyl group or an ethyl group.
  • m and n represent the average number of moles added of each structural unit.
  • m and n are each independently 1.0 to 50, and more specifically may be 1.0 or more, 1.5 or more, 2.0 or more, 3.0 or more, 4.0 or more, 5.0 or more, 6.0 or more, 7.0 or more, 8.0 or more, 9.0 or more, or 10 or more, or may be 50 or less, 45 or less, 40 or less, 35 or less, 34 or less, 32 or less, 30 or less, 28 or less, 26 or less, 25 or less, 24 or less, 22 or less, 20 or less, 18 or less, 16 or less, 15 or less, 14 or less, 12 or less, 10 or less, or 5.0 or less.
  • m is preferably 1.0 or more and 14 or less, and more preferably 2.0 or more and 5.0 or less.
  • n is preferably 2.0 or more and 34 or less, and more preferably 6.0 or more and 12 or less.
  • m+n may be 4.0 or more, 4.5 or more, 5.0 or more, 6.0 or more, 7.0 or more, 8.0 or more, 9.0 or more, 10 or more, 11 or more, 12 or more, 13 or more, 14 or more, or 15 or more, and may be 50 or less, 45 or less, 40 or less, 35 or less, 30 or less, 25 or less, 20 or less, 15 or less, or 12 or less.
  • m:n may be 1:10 to 10:1.
  • the number average molecular weight of the first polymer of the present invention is 10,000 or less. More specifically, the number average molecular weight of the first polymer of the present invention may be, for example, 10,000 or less, 5,000 or less, 3,500 or less, 3,000 or less, 2,500 or less, 2,000 or less, 1,500 or less, 1,400 or less, 1,300 or less, 1,200 or less, 1,100 or less, 1,000 or less, 900 or less, 800 or less, 700 or less, or 600 or less, or may be 130 or more, 150 or more, 200 or more, 250 or more, 300 or more, 350 or more, 400 or more, 450 or more, or 500 or more.
  • the number average molecular weight of the first polymer of the present invention is preferably 300 or more and 3,500 or less, and more preferably 500 or more and 1,200 or less.
  • the IOB value of the first polymer of the present invention is 0.4 to 1.8. More specifically, the IOB value of the first polymer of the present invention may be, for example, 0.4 or more, 0.5 or more, 0.6 or more, or 0.7 or more, and may be 1.8 or less, 1.6 or less, 1.4 or less, or 1.2 or less. The IOB value of the first polymer of the present invention is preferably 0.7 or more and 1.2 or less.
  • the IOB value is an abbreviation for Inorganic/Organic Balance, which is a value that indicates the ratio of inorganic value to organic value, and is an index showing the degree of polarity of an organic compound.
  • IOB value inorganic value / organic value.
  • the IOB value of an organic compound can be calculated by accumulating the "inorganic value” and “organic value” of all atoms and functional groups in the organic compound (for example, see “Organic Concept Diagram - Basics and Applications” by Yoshio Koda, pp. 11-17, Sankyo Publishing, 1984). For a method for determining the IOB value, see the method described in the Examples.
  • the first polymer of the present invention may be a block copolymer or a random copolymer, but is preferably a random copolymer.
  • the method for producing the first polymer of the present invention is not particularly limited, and may be carried out, for example, by addition polymerization of epoxides corresponding to each structural unit.
  • the addition polymerization may be block polymerization or random polymerization, but random polymerization is preferred.
  • the first method for producing a polymer of the present invention may further include reacting the polymer obtained by the above-mentioned addition polymerization with an alkyl halide. Through the reaction with the alkyl halide, the hydroxyl groups in the obtained polymer molecule are blocked with alkyl groups, and as a result, the hydrophobicity of the entire polymer can be adjusted as desired.
  • the blocking rate of hydroxyl groups by alkyl groups in the polymer molecule may be, for example, 30% or more, 35% or more, 40% or more, 45% or more, 50% or more, or 55% or more, and may be 60% or less, 59% or less, 58% or less, 57% or less, 56% or less, or 55% or less.
  • the blocking rate of hydroxyl groups by alkyl groups can be determined by the method described in the Examples.
  • One of the characteristics of the first polymer of the present invention is that it has both high water solubility and high lipid solubility.
  • the solubility of the first polymer of the present invention in water can be, for example, 10% by mass or more, 20% by mass or more, 30% by mass or more, 40% by mass or more, or 50% by mass or more.
  • composition of the first invention may further contain other components as long as the effects of the present invention are not impaired.
  • the composition of the first invention may further include a cosurfactant (also called a "surfactant assistant").
  • a cosurfactant is a substance that cannot form an association in a solvent by itself, but can form an interfacial film together with a nonionic surfactant and change the properties of the interfacial film of the nonionic surfactant.
  • the cosurfactant contributes to the formation of a sponge phase by the nonionic surfactant.
  • the cosurfactant may be, for example, at least one component selected from the group consisting of alkyl glycerols and glycerin fatty acid esters.
  • alkyl glycerol is ethylhexyl glycerin.
  • the glycerin fatty acid ester may also include polyglycerin fatty acid esters. Examples of the glycerin fatty acid esters include polyglyceryl-2 laurate and polyglyceryl-2 caprate.
  • the content is not particularly limited, and may be, for example, 0.05 mass% or more, 0.1 mass% or more, 0.2 mass% or more, 0.3 mass% or more, or 0.4 mass% or more, and may be 10.0 mass% or less, 5.0 mass% or less, 1.0 mass% or less, or 0.5 mass% or less, relative to the entire composition.
  • the mass ratio of the cosurfactant to the nonionic surfactant may be, for example, 0.1 parts by mass or more, 0.3 parts by mass or more, or 0.5 parts by mass or more per 1.0 part by mass of the nonionic surfactant (total amount), and may be 0.9 parts by mass or less, or 0.7 parts by mass or less.
  • the first composition of the present invention may further include a preservative.
  • a preservative for example, phenoxyethanol may be used as the preservative.
  • this phenoxyethanol is usually poorly soluble or insoluble in water, but it can be dissolved in water in the specific formulation of the first composition of the present invention. That is, even when the first composition of the present invention contains phenoxyethanol, it can be homogenized by interaction with a nonionic surfactant, that is, it can be prepared into a solubilized system. In this case, the first composition of the present invention may be transparent.
  • the content is not particularly limited, and may be, for example, 0.05 mass% or more, 0.1 mass% or more, 0.2 mass% or more, 0.3 mass% or more, or 0.4 mass% or more, and may be 10.0 mass% or less, 5.0 mass% or less, 1.0 mass% or less, or 0.5 mass% or less, relative to the entire composition.
  • the composition of the first invention may further contain an oily component.
  • the oily component is preferably 1.0% by mass or less, more preferably 0.5% by mass or less, based on the total mass of the composition, and is preferably substantially not contained in the composition of the first invention.
  • the first composition of the present invention may further contain an ionic surfactant.
  • the ionic surfactant include an anionic surfactant, a cationic surfactant, and an amphoteric surfactant.
  • the ionic surfactant is preferably 0.1 mass% or less, more preferably 0.05 mass% or less, even more preferably 0.01 mass% or less, and even more preferably less than 0.005 mass%, and particularly preferably is not substantially contained in the composition of the present invention.
  • composition of the first invention may contain, as optional components, appropriate amounts as needed, such as water-soluble alcohols, alkylene oxide derivatives, water-soluble polymers, thickeners, film-forming agents, UV absorbers, sequestering agents, amino acids, organic amines, polymer emulsions, pH adjusters, skin nutrients, vitamins, antioxidants, antioxidant assistants, fragrances, and the like.
  • composition of the first invention may have a sponge phase containing a nonionic surfactant as a component.
  • the sponge phase refers to a state in which surfactants are infinitely associated in water to form a continuous mass, with water held between the hydrophilic groups of the continuous mass.
  • the shape of the water is random and has no regularity.
  • the lipophilic groups of one surfactant are arranged opposite the lipophilic groups of other surfactants. Therefore, the sponge phase can be said to be a state in which a bilayer membrane of the surfactant separates the water, forming tiny water domains.
  • the sponge phase can be confirmed, for example, by using the method disclosed in Patent Document 1 as appropriate.
  • a cleansing composition having a sponge phase has high cleansing power even if it does not contain an oily component.
  • the appearance of a cleansing composition having a sponge phase is transparent (including translucent).
  • the formulation of the first composition of the present invention is not particularly limited, but it is preferably a solubilized system from the viewpoint of improving the refreshing and non-sticky feel when used.
  • the composition of the present invention can be applied to skin cleansing products.
  • the first composition of the present invention can be used to remove makeup.
  • the first composition of the present invention can be applied to remove waterproof cosmetics applied to the skin.
  • the first composition of the present invention can be used to remove dirt by wiping.
  • the method for producing the composition of the first invention is not particularly limited, and it can be produced, for example, by mixing the above-mentioned components.
  • the second composition of the present invention is highly soluble in water and has good moisturizing properties after washing.
  • the second composition of the present invention has good foaming properties because of its high solubility in water.
  • the second polymer of the present invention which has a specific structure, is amphiphilic and tends to dissolve in an aqueous phase, but also has hydrophobic properties, so it is believed to have good affinity with the higher fatty acids and/or salts thereof and other ingredients (e.g., moisturizers, nonionic surfactants, etc.) contained in the second composition of the present invention, as well as with makeup ingredients, and to have good affinity with the skin.
  • ingredients e.g., moisturizers, nonionic surfactants, etc.
  • a compound having a polyethylene glycol skeleton is used to improve the water solubility of a cleansing composition.
  • the polymer of the second invention of the present invention in which A in the above formula (1) is represented by the following formula (2), does not have a polyethylene glycol skeleton, but the composition of the second invention containing such a polymer of the second invention is excellent in water solubility and moisturizing effect after washing.
  • R4 is an alkyl group having 1 or 2 carbon atoms
  • the water used is not particularly limited, but may be the same as that used in cosmetics, quasi-drugs, etc., such as purified water, ion-exchanged water, tap water, etc.
  • the water content is not particularly limited and can be adjusted as appropriate depending on, for example, the content of components other than water. More specifically, the water content may be, for example, 5.0% by mass or more, 10% by mass or more, 15% by mass or more, 20% by mass or more, 25% by mass or more, or 30% by mass or more relative to the entire composition, and may be 80% by mass or less, 70% by mass or less, 60% by mass or less, 50% by mass or less, 40% by mass or less, or 35% by mass or less.
  • the composition of the second invention contains a higher fatty acid and/or a salt thereof. That is, the composition of the second invention may contain a higher fatty acid, may contain a higher fatty acid salt, or may contain a mixture of a higher fatty acid and a higher fatty acid salt.
  • Higher fatty acids refer to chain monocarboxylic acids having 6 or more carbon atoms.
  • any of saturated, unsaturated, straight-chain, and branched fatty acids can be used as higher fatty acids, but fatty acids having 12 to 18 carbon atoms are preferred.
  • higher fatty acids that can be included in the composition of the second invention may include, for example, one or a combination of two or more of lauric acid, myristic acid, palmitic acid, stearic acid, palmitoleic acid, oleic acid, isomyristic acid, isopalmitic acid, and isostearic acid.
  • the higher fatty acid salt can be obtained, for example, by neutralizing the higher fatty acid with a neutralizing agent when preparing the composition. Generally, it is not completely neutralized, and the product also contains unreacted higher fatty acid.
  • the neutralization rate of the higher fatty acid is not particularly limited, but is preferably 60 to 90 mol%, more preferably 70 to 85 mol%. Therefore, the cleansing agent according to the second invention contains preferably 60 to 90 mol%, more preferably 70 to 85 mol% of the higher fatty acid salt and preferably 10 to 40 mol%, more preferably 15 to 30 mol% of the higher fatty acid.
  • the content of the neutralizing agent is not particularly limited, and can be appropriately adjusted to achieve the above neutralization rate.
  • one or more selected from sodium hydroxide, potassium hydroxide, calcium hydroxide, magnesium hydroxide, aluminum hydroxide, ammonia water, monoethanolamine, diethanolamine, and triethanolamine are preferred, one or more selected from sodium hydroxide, potassium hydroxide, ammonia water, monoethanolamine, diethanolamine, and triethanolamine are more preferred, and one or two selected from sodium hydroxide and potassium hydroxide are preferred.
  • the second inventive polymer is similar to the "first inventive polymer," and therefore a detailed description thereof will be omitted here.
  • the content of the polymer of the second invention is not particularly limited, and may be, for example, 0.001 mass% or more, 0.005 mass% or more, 0.01 mass% or more, 0.05 mass% or more, 0.1 mass% or more, 0.5 mass% or more, 1.0 mass% or more, 2.0 mass% or more, 3.0 mass% or more, or 4.0 mass% or more, and may be 10.0 mass% or less, 9.0 mass% or less, 8.0 mass% or less, 7.0 mass% or less, 6.0 mass% or less, 5.0 mass% or less, 4.0 mass% or less, 3.0 mass% or less, 2.0 mass% or less, or 1.0 mass% or less.
  • composition of the second invention preferably further contains at least one polyhydric alcohol. This is because the polyhydric alcohol can impart moisturizing properties after washing. Therefore, the polyhydric alcohol can also be called a moisturizing agent in some cases (depending on the type).
  • a polyhydric alcohol is an alcohol having two or more hydroxyl groups in the molecule.
  • the polyhydric alcohol is not particularly limited, and examples thereof include 1,2-propanediol, 1,3-propanediol, 1,2-butanediol, 1,3-butanediol, 1,4-butanediol, dipropylene glycol, glycerin, diglycerin, sorbitan, sorbitol, maltitol, glucose, and sucrose.
  • the polyhydric alcohol includes at least one selected from the group consisting of dipropylene glycol, glycerin, and sorbitol.
  • its content is not particularly limited, and may be, for example, 1.0 mass% or more, 2.0 mass% or more, 3.0 mass% or more, 4.0 mass% or more, 5.0 mass% or more, 6.0 mass% or more, 7.0 mass% or more, 8.0 mass% or more, 9.0 mass% or more, 10 mass% or more, 11 mass% or more, 12 mass% or more, 13 mass% or more, or more than 15 mass%.
  • % or more 14% or more, 15% or more, 16% or more, 17% or more, 18% or more, 19% or more, 20% or more, 21% or more, 22% or more, 23% or more, 24% or more, 25% or more, or 30% or more by mass, and may be 60% or less, 55% or less, 50% or less, 45% or less, 40% or less, 35% or less, 30% or less, or 25% or less by mass.
  • the ratio of the total content of the polyhydric alcohol to the content of the polymer of the second invention is not particularly limited, and may be, for example, 5:1 to 80:1, and more specifically, may be 5:1 or more, 6:1 or more, 7:1 or more, 8:1 or more, 9:1 or more, 10:1 or more, 15:1 or more, or 20:1 or more, and may be 80:1 or less, 75:1 or less, 70:1 or less, 65:1 or less, 60:1 or less, 55:1 or less, 50:1 or less, 45:1 or less, 40:1 or less, 35:1 or less, 30:1 or less, 25:1 or less, or 20:1 or less.
  • the composition of the second invention preferably further comprises a surfactant.
  • the surfactant is not particularly limited, but for example, from the viewpoint of improving foam quality and foam retention, it is preferable to use a nonionic surfactant, and from the viewpoint of improving foamability, it is preferable to use an amphoteric surfactant.
  • the composition of the second invention preferably uses a nonionic surfactant and an amphoteric surfactant in combination.
  • Nonionic surfactants are not particularly limited, and examples thereof include polyoxyethylene alkyl ethers such as polyoxyethylene lauryl ether, polyoxyethylene cetyl ether, and polyoxyethylene stearyl ether; polyoxyethylene polyoxypropylene lauryl ether, polyoxyethylene polyoxypropylene cetyl ether, polyoxyethylene polyoxypropylene stearyl ether, and polyoxyethylene polyoxypropylene decyl tetradecyl ether; polyoxyethylene alkyl phenyl ethers such as polyoxyethylene octyl phenyl ether and polyoxyethylene nonyl phenyl ether; sorbitan fatty acid esters such as sorbitan monolaurate, sorbitan monostearate, and sorbitan monooleate; polyoxyethylene sorbitan monolaurate, polyoxyethylene sorbitan monostearate, and polyoxyethylene sorbitan trioleate; Examples of the fatty acid esters include polyoxyethylene sorb
  • amphoteric surfactant is not particularly limited, and examples thereof include glycine type amphoteric surfactants, aminopropionic acid type amphoteric surfactants, amidopropyl betaine type amphoteric surfactants, aminoacetic acid betaine type amphoteric surfactants, and sulfobetaine type amphoteric surfactants.
  • amphoteric surfactants include alkyl diaminoethyl glycine hydrochloride, sodium lauryl diaminoethyl glycine, lauryl betaine, 2-alkyl-N-carboxymethyl-N-hydroxyethyl imidazolium betaine (also called “sodium cocoamphoacetate"), sodium lauryl aminopropionate, triethanolamine lauryl aminopropionate, sodium lauryl aminodipropionate, coconut oil fatty acid acyl-N-carboxyethyl-N-hydroxyethyl ethylenediamine sodium, coconut oil fatty acid acyl-N-carboxyethoxyethyl-N-carboxyethyl ethylenediamine sodium, and the like.
  • Examples of such compounds include disodium amine, coconut oil fatty acid amidopropyl betaine, palm oil fatty acid amidopropyl betaine, lauric acid amidopropyl betaine, ricinoleic acid amidopropyl betaine, lauryl dimethylaminoacetic acid betaine, coconut oil alkyl dimethylaminoacetic acid betaine, stearyl dimethylaminoacetic acid betaine, stearyl dihydroxyethyl betaine, lauric acid amidopropyl acetate betaine, lauryl hydroxysulfobetaine, lauric acid amidopropyl hydroxysulfobetaine, myristic acid amidopropyl hydroxysulfobetaine, and coconut oil fatty acid amidopropyl hydroxysulfobetaine.
  • an amphoteric surfactant when contained, its content is not particularly limited, and may be, for example, 0.1 mass% or more, 0.5 mass% or more, 1.0 mass% or more, 1.5 mass% or more, 2.0 mass% or more, 2.5 mass% or more, 3.0 mass% or more, 3.5 mass% or more, or 4.0 mass% or more, and may be 10 mass% or less, 9.0 mass% or less, 8.0 mass% or less, 7.0 mass% or less, 6.0 mass% or less, 5.0 mass% or less, 4.0 mass% or less, 3.0 mass% or less, or 2.0 mass% or less, relative to the entire composition.
  • composition of the second invention may contain any components that can be added to skin cleansers in general, as long as they do not impair the effects of the second invention.
  • Such components include, but are not limited to, buffers (e.g., citric acid, sodium citrate, etc.), chelating agents (e.g., EDTA, etc.), colorants, fragrances, etc.
  • composition of the second invention is not particularly limited, and can be carried out, for example, by mixing the above-mentioned essential components with other components that are added optionally. Furthermore, when mixing, means such as heating or stirring may be used as necessary.
  • Weight average molecular weight The weight average molecular weight of the obtained polymer 1 was about 859 as determined by GPC calculation in the same manner as above.
  • the IOB value of the obtained polymer 1 was determined as follows and was found to be 1.1.
  • compositions of Comparative Example 1-1 using the composition of Comparative Example 1-1 as a standard, five members of the expert sensory evaluation panel applied the composition to the face, blended it with the makeup with their hands a certain number of times at a certain pressure and speed, and rinsed it off with water or lukewarm water. They were comprehensively evaluated for "skin compatibility,” “makeup removal,” and “stickiness” using the following evaluation criteria. The evaluation results for each are shown in Table 2.
  • Comparative Example 1-2 an attempt was made to incorporate the polymer "CH 3 O-[(EO) 14 /(PO) 7 ]-CH 3 " together with "PPG-70 glyceryl" instead of the first polymer of the present invention.
  • the composition of Comparative Example 1-2 improved skin compatibility to the same extent as the compositions of Examples 1-6, it was found that the improvement in makeup removal was less than that of the compositions of Examples 1-1 to 1-6.
  • Comparative Example 1-2 also suggest that it is difficult to simultaneously improve both skin compatibility and makeup removal. In contrast, it was found that the compositions of Examples 1-1 to 1-6 all achieved both good skin compatibility and good makeup removal.
  • Synthesis Examples 1 and 2 The following Synthesis Examples 1 and 2 were synthesized in the same manner as in “Synthesis Examples 1 and 2" in the experimental section of the above-mentioned "First Invention". Various physical property values of the obtained Polymer 1 and Polymer 2 were as shown in the above-mentioned Table 1 and Table 1-2.
  • the water solubility was determined based on how easily the composition dissolved when 1 g of the composition sample was mixed with 10 g of water.

Abstract

Provided is a novel cleansing composition, which demonstrates favorable contact with the skin and satisfactorily removes dirt.　The cleansing composition comprises water, a humectant, a nonionic surfactant, and a polymer having a structure represented by formula (1). In formula (1), R1, R2, and R3 are each independently a hydrogen atom or a C1-4 alkyl group, A is a C2-4 alkylene group, and m and n are each independently 1.0-50. The polymer has a number-average molecular weight of 10,000 or less and an IOB value of 0.4-1.8.

Description

洗浄料組成物Cleansing composition
　本発明は、洗浄料組成物に関する。 The present invention relates to a cleaning composition.
　［第１の本発明の背景技術］
　化粧（メーク）や汚れを肌から除去するための洗浄料に関して、様々な開発が為されている。 [Background Art of the First Invention]
A variety of cleansing agents have been developed to remove makeup and dirt from the skin.
　例えば、特許文献１では、肌に対して低刺激性でありながらも、洗浄性の高い洗浄料組成物を開示している。より具体的には、特許文献１の洗浄料組成物は、（Ａ）ＨＬＢが１０～１８の非イオン性界面活性剤と、（Ｂ）アルキルグリセロール及びグリセリン脂肪酸エステルからなる群から選択される少なくとも１つを含むコサーファクタントと、を含み、前記コサーファクタントが洗浄料組成物の質量に対して０．３質量％以上であり、イオン性界面活性剤の総量が洗浄料組成物の質量に対して０．１質量％以下である。 For example, Patent Document 1 discloses a detergent composition that is mild to the skin but has high cleansing properties. More specifically, the detergent composition of Patent Document 1 contains (A) a nonionic surfactant with an HLB of 10 to 18, and (B) a cosurfactant containing at least one selected from the group consisting of alkylglycerols and glycerin fatty acid esters, the cosurfactant being present in an amount of 0.3% by mass or more relative to the mass of the detergent composition, and the total amount of the ionic surfactants being 0.1% by mass or less relative to the mass of the detergent composition.
　［第２の本発明の背景技術］
　洗顔等に用いられる洗浄料には、洗浄力と起泡性の観点から高級脂肪酸石鹸が配合されることが一般的である。そして、特に洗顔用洗浄料においては、洗浄力に加え、使用感や保湿性等を改善するために、界面活剤、保湿剤及びその他の添加剤を組み合わせることが検討されている。 [Background Art of the Second Invention]
In face washes and other cleansers, higher fatty acid soaps are generally blended from the viewpoint of cleansing power and foaming properties. In particular, in face washes, the combination of surfactants, moisturizers and other additives has been studied in order to improve not only cleansing power but also usability and moisturizing properties.
　例えば、特許文献２では、（Ａ）高級脂肪酸塩から選ばれる一種又は二種以上、（Ｂ）ベタイン系両性界面活性剤、（Ｃ）平均重合度２００～１５４０のポリエチレングリコール、（Ｄ）ＨＬＢ＝４以下のモノステアリン酸グリセリル（（Ｅ）成分に該当する成分を除く）、（Ｅ）脂肪酸塩を含有した自己乳化型モノステアリン酸グリセリルを含有する洗浄料が報告されている。 For example, Patent Document 2 reports a cleansing agent that contains (A) one or more types selected from higher fatty acid salts, (B) a betaine-based amphoteric surfactant, (C) polyethylene glycol with an average degree of polymerization of 200 to 1540, (D) glyceryl monostearate with an HLB of 4 or less (excluding components that fall under component (E)), and (E) a self-emulsifying glyceryl monostearate that contains a fatty acid salt.
特開２０２１－１７８７９５号公報JP 2021-178795 A 特開２０１２－２１４３９１号公報JP 2012-214391 A
　［第１の本発明の課題］
　洗浄料組成物として、例えば、可溶化系のものや油性のもの等のように様々な剤型がある。例えば、可溶化系の洗浄料組成物の場合、通常、さっぱりで、べたつかないという使用感を有する。 [First Object of the Invention]
There are various types of detergent compositions, such as solubilized types, oil-based types, etc. For example, solubilized types of detergent compositions usually have a refreshing and non-sticky feel when used.
　しかしながら、このような可溶化系の洗浄料組成物は、肌なじみが悪く、汚れ落ち（メイク落ちも含む）も悪いという問題が知られており、特に、肌なじみと汚れ落ちとの両立が難しいとされている。 However, these solubilized cleansing compositions are known to have problems with poor skin compatibility and poor dirt removal (including makeup removal), and it is considered particularly difficult to achieve both skin compatibility and dirt removal.
　第１の本発明は、上記の事情を改善しようとするものであり、その目的は、肌なじみが良く、かつ汚れ落ちも良い新規な洗浄料組成物を提供することである。 The first invention aims to improve the above situation, and its purpose is to provide a new cleansing composition that is compatible with the skin and also effectively removes dirt.
　［第２の本発明の課題］
　第２の本発明の目的は、水溶けが良く、かつ洗浄後に良好なしっとりさを有する新規な洗浄料組成物を提供することである。 [Second Object of the Invention]
A second object of the present invention is to provide a novel cleansing composition which is highly soluble in water and leaves skin feeling moisturized after cleansing.
　上記の目的を達成する第１の本発明は、以下のとおりである。 The first aspect of the present invention that achieves the above objective is as follows:
　〈態様１－１〉
　洗浄料組成物であって、
　水と、保湿剤と、ノニオン界面活性剤と、下記式（１）で表される構造を有するポリマーと、を含み、
　前記式（１）において、Ｒ１、Ｒ２及びＲ３は、それぞれ独立して、水素原子又は炭素数１～４のアルキル基であり、Ａは、炭素数２～４のアルキレン基であり、かつｍ及びｎは、それぞれ独立して、１．０～５０であり、
　前記ポリマーの数平均分子量が、１０，０００以下であり、かつ
　前記ポリマーのＩＯＢ値が、０．４～１．８である、
組成物。
　〈態様１－２〉
　前記式（１）において、Ａが、下記式（２）で表され：
　前記式（２）において、Ｒ４は、炭素数１又は２のアルキル基である、
態様１－１に記載の組成物。
　〈態様１－３〉
　前記保湿剤と前記ノニオン界面活性剤との質量比（前記保湿剤／前記ノニオン界面活性剤）が、０．２以上１０以下である、態様１－１又は１－２に記載の組成物。
　〈態様１－４〉
　前記ノニオン界面活性剤のＨＬＢ値が、５．０～２０．０である、態様１－１～１－３のいずれか一項に記載の組成物。
　〈態様１－５〉
　オクトキシグリセリン及び／又はフェノキシエタノールを更に含む、態様１－１～１－４のいずれか一項に記載の組成物。
　〈態様１－６〉
　前記保湿剤が、グリセリン、ジプロピレングリコール、プロピレングリコール、及び１，３－ブチレングリコールからなる群より選択される少なくとも１つを含む、態様１－１～１－５のいずれか一項に記載の組成物。
　〈態様１－７〉
　可溶化系である、態様１－１～１－６のいずれか一項に記載の組成物。
　〈態様８〉
　メイク落とし用である、態様１１－～１－７のいずれか一項に記載の組成物。 <Aspect 1-1>
A cleaning composition comprising:
The composition comprises water, a moisturizer, a nonionic surfactant, and a polymer having a structure represented by the following formula (1):
In the formula (1), R 1 , R 2 and R 3 each independently represent a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, A represents an alkylene group having 2 to 4 carbon atoms, and m and n each independently represent an integer of 1.0 to 50.
The number average molecular weight of the polymer is 10,000 or less, and the IOB value of the polymer is 0.4 to 1.8.
Composition.
<Aspect 1-2>
In the formula (1), A is represented by the following formula (2):
In the formula (2), R 4 is an alkyl group having 1 or 2 carbon atoms.
The composition according to embodiment 1-1.
<Aspect 1-3>
The composition according to aspect 1-1 or 1-2, wherein a mass ratio of the moisturizer to the nonionic surfactant (the moisturizer/the nonionic surfactant) is 0.2 or more and 10 or less.
<Aspect 1-4>
The composition according to any one of claims 1-1 to 1-3, wherein the HLB value of the nonionic surfactant is 5.0 to 20.0.
<Aspect 1-5>
The composition according to any one of Aspects 1-1 to 1-4, further comprising octoxyglycerin and/or phenoxyethanol.
<Aspect 1-6>
Aspects 6. The composition of any one of Aspects 1-1 to 1-5, wherein the moisturizer comprises at least one selected from the group consisting of glycerin, dipropylene glycol, propylene glycol, and 1,3-butylene glycol.
<Aspect 1-7>
Aspects 1-1 to 1-6, wherein the composition is a solubilizing system.
<Aspect 8>
The composition according to any one of Aspects 11- to 1-7, which is used for removing makeup.
　上記の目的を達成する第２の本発明は、以下のとおりである。 The second aspect of the present invention that achieves the above object is as follows:
　〈態様２－１〉
　水と、
　高級脂肪酸及び／又はその塩と、
　下記式（１）で表される構造を有するポリマーと
を含み、
　前記式（１）において、Ｒ１、Ｒ２及びＲ３は、それぞれ独立して、水素原子又は炭素数１～４のアルキル基であり、Ａは、炭素数２～４のアルキレン基であり、かつｍ及びｎは、それぞれ独立して、１．０～５０であり、
　前記ポリマーの数平均分子量が、１０，０００以下であり、かつ
　前記ポリマーのＩＯＢ値が、０．４～１．８である、
洗浄料組成物。
　〈態様２－２〉
　前記式（１）において、Ａが、下記式（２）で表され：
　前記式（２）において、Ｒ４は、炭素数１又は２のアルキル基である、
態様２－１に記載の組成物。
　〈態様２－３〉
　前記ポリマーが、ランダム共重合体である、態様２－１又は２－２に記載の組成物。
　〈態様２－４〉
　少なくとも１種の多価アルコールを更に含む、態様２－１～２－３のいずれか一項に記載の組成物。
　〈態様２－５〉
　前記多価アルコールの合計含有量と前記ポリマーの含有量との比（前記多価アルコール：前記ポリマー）が、５：１～８０：１である、態様２－４に記載の組成物。
　〈態様２－６〉
　ポリエチレングリコール骨格を有する成分の含有量が０．０１質量％以下である、態様２－１～２－５のいずれか一項に記載の組成物。
　〈態様２－７〉
　前記高級脂肪酸が、炭素数１２～１８の脂肪酸である、態様２－１～２－６のいずれか一項に記載の組成物。
　〈態様２－８〉
　皮膚洗浄用である、態様２－１～２－７のいずれか一項に記載の組成物。 <Aspect 2-1>
water and,
A higher fatty acid and/or a salt thereof,
and a polymer having a structure represented by the following formula (1):
In the formula (1), R 1 , R 2 and R 3 each independently represent a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, A represents an alkylene group having 2 to 4 carbon atoms, and m and n each independently represent an integer of 1.0 to 50.
The number average molecular weight of the polymer is 10,000 or less, and the IOB value of the polymer is 0.4 to 1.8.
Cleansing composition.
<Aspect 2-2>
In the formula (1), A is represented by the following formula (2):
In the formula (2), R 4 is an alkyl group having 1 or 2 carbon atoms.
The composition according to aspect 2-1.
<Aspect 2-3>
The composition according to aspect 2-1 or 2-2, wherein the polymer is a random copolymer.
<Aspect 2-4>
The composition according to any one of aspects 2-1 to 2-3, further comprising at least one polyhydric alcohol.
<Aspect 2-5>
The composition according to any one of aspects 2 to 4, wherein the ratio of the total content of the polyhydric alcohol to the content of the polymer (the polyhydric alcohol:the polymer) is from 5:1 to 80:1.
<Aspect 2-6>
The composition according to any one of Aspects 2-1 to 2-5, wherein the content of the component having a polyethylene glycol skeleton is 0.01% by mass or less.
<Aspect 2-7>
The composition according to any one of Aspects 2-1 to 2-6, wherein the higher fatty acid is a fatty acid having 12 to 18 carbon atoms.
<Aspect 2-8>
The composition according to any one of Aspects 2-1 to 2-7, which is for cleansing the skin.
　［第１の本発明の効果］
　第１の本発明によれば、肌なじみが良く、かつ汚れ落ちも良い新規な洗浄料組成物を提供することができる。 [First Effect of the Present Invention]
According to the first invention, a novel cleansing composition which is compatible with the skin and removes dirt effectively can be provided.
　［第２の本発明の効果］
　第２の本発明によれば、水溶けが良く、かつ洗浄後に良好なしっとりさを有する新規な洗浄料組成物を提供することができる。 [Second Effect of the Present Invention]
According to the second invention, it is possible to provide a novel cleansing composition which is highly soluble in water and leaves a good moist feeling after cleansing.
　［第１の本発明］
　以下、第１の本発明の実施の形態について詳述する。なお、第１の本発明は、以下の実施の形態に限定されるものではなく、発明の本旨の範囲内で種々変形して実施できる。 [First aspect of the present invention]
Hereinafter, the first embodiment of the present invention will be described in detail. Note that the first embodiment of the present invention is not limited to the following embodiment, and can be modified in various ways within the scope of the present invention.
　《洗浄料組成物》
　第１の本発明の洗浄料組成物（以下、単に「第１の本発明の組成物」とも称する）は、
　水と、保湿剤と、ノニオン界面活性剤と、下記式（１）で表される構造を有するポリマーと、を含み、
　式（１）において、Ｒ１、Ｒ２及びＲ３は、それぞれ独立して、水素原子又は炭素数１～４のアルキル基であり、Ａは、炭素数２～４のアルキレン基であり、かつｍ及びｎは、それぞれ独立して、１．０～５０であり、
　ポリマーの数平均分子量が、１０，０００以下であり、かつ
　ポリマーのＩＯＢ値が、０．４～１．８である、
組成物
である。 Cleansing composition
The cleansing composition of the first invention (hereinafter, also simply referred to as the "composition of the first invention") comprises:
The composition comprises water, a moisturizer, a nonionic surfactant, and a polymer having a structure represented by the following formula (1):
In formula (1), R 1 , R 2 and R 3 each independently represent a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, A represents an alkylene group having 2 to 4 carbon atoms, and m and n each independently represent an integer from 1.0 to 50.
The number average molecular weight of the polymer is 10,000 or less, and the IOB value of the polymer is 0.4 to 1.8.
It is a composition.
　第１の本発明の組成物は、肌なじみが良く、かつ汚れ落ちも良く、すなわち、肌なじみと汚れ落ちとの両立ができる組成物である。また、第１の本発明の組成物の剤型として、例えば可溶化系の場合には、さっぱりして、べたつかない使用感も得ることができる。 The first composition of the present invention is a composition that is compatible with the skin and also removes dirt well, that is, it is a composition that can achieve both compatibility with the skin and the ability to remove dirt. Furthermore, when the formulation of the first composition of the present invention is, for example, a solubilized system, it is possible to obtain a refreshing, non-sticky feel when used.
　理論に限定されるものではないが、これは、第１の本発明のポリマーの特性、すなわち式（１）で示す特有の構造、特定の範囲の数平均分子量（１０，０００以下）、及び特定の範囲のＩＯＢ（Ｉｎｏｒｇａｎｉｃ　Ｏｒｇａｎｉｃ　Ｂａｌａｎｃｅ）値（０．４～１．８）に由来するものと推測する。 Without being limited by theory, we speculate that this is due to the characteristics of the first polymer of the present invention, namely, the unique structure shown in formula (1), a specific range of number average molecular weight (10,000 or less), and a specific range of IOB (Inorganic Organic Balance) value (0.4 to 1.8).
　また、特定の構造をもつ第１の本発明のポリマーは、両親媒性であり、水相に溶解する傾向があるものの、疎水的な性質も有するため、第１の本発明の組成物に含まれる他の成分（例えば、保湿剤やノニオン界面活性剤等）及びメイクの成分等との親和性もよく、皮膚との親和性もよいと考えられる。 In addition, the first polymer of the present invention, which has a specific structure, is amphiphilic and tends to dissolve in an aqueous phase, but also has hydrophobic properties, so it is believed to have good affinity with other ingredients contained in the first composition of the present invention (e.g., moisturizers, nonionic surfactants, etc.) and makeup ingredients, as well as good affinity with the skin.
　〈水〉
　第１の本発明の組成物は、水を含む。水としては、化粧料、医薬部外品等に使用される水を使用することができ、例えば、精製水、イオン交換水、水道水等を使用することができる。 <water>
The composition of the first invention contains water. As the water, water used in cosmetics, quasi-drugs, etc., can be used, for example, purified water, ion-exchanged water, tap water, etc.
　第１の本発明の組成物において、水の含有量は、特に限定されず、例えば、組成物全体に対して、６０質量％以上、６２質量％以上、６５質量％以上、６８質量％以上、７０質量％以上、７２質量％以上、７５質量％以上、７８質量％以上、８０質量％以上、又は８１質量％以上であってよく、また、９５質量％以下、９４質量％以下、９３質量％以下、９２質量％以下、９１質量％以下、９０質量％以下、８９質量％以下、８８質量％以下、８７質量％以下、８６質量％以下、８５質量％以下、８４質量％以下、８３質量％以下、８２質量％以下、又は８１質量％以下であってよい。 In the first composition of the present invention, the water content is not particularly limited, and may be, for example, 60% by mass or more, 62% by mass or more, 65% by mass or more, 68% by mass or more, 70% by mass or more, 72% by mass or more, 75% by mass or more, 78% by mass or more, 80% by mass or more, or 81% by mass or more, or 95% by mass or less, 94% by mass or less, 93% by mass or less, 92% by mass or less, 91% by mass or less, 90% by mass or less, 89% by mass or less, 88% by mass or less, 87% by mass or less, 86% by mass or less, 85% by mass or less, 84% by mass or less, 83% by mass or less, 82% by mass or less, or 81% by mass or less, based on the entire composition.
　〈保湿剤〉
　第１の本発明の組成物は、保湿剤を含む。 <Moisturizer>
The first composition of the present invention includes a moisturizer.
　保湿剤は、特に限定されず、例えば、多価アルコール、多価アルコール重合体、コンドロイチン硫酸、ヒアルロン酸、ムコイチン硫酸、カロニン酸、アテロコラーゲン、コレステリル－１２－ヒドロキシステアレート、乳酸ナトリウム、胆汁酸塩、ｄｌ－ピロリドンカルボン酸塩、アルキレンオキシド誘導体、短鎖可溶性コラーゲン、ジグリセリン（ＥＯ）ＰＯ付加物、イザヨイバラ抽出物、セイヨウノコギリソウ抽出物、メリロート抽出物等が挙げられるが、これらに限定されない。これらのうち、保湿剤は、特に、多価アルコール及び／又は多価アルコール重合体を含むことが好ましい。 The moisturizer is not particularly limited, and examples thereof include, but are not limited to, polyhydric alcohols, polyhydric alcohol polymers, chondroitin sulfate, hyaluronic acid, mucoitin sulfate, caronic acid, atelocollagen, cholesteryl-12-hydroxystearate, sodium lactate, bile acid salts, dl-pyrrolidone carboxylates, alkylene oxide derivatives, short-chain soluble collagen, diglycerin (EO)PO adducts, Rosa robur extract, Achillea millefolium extract, and Melilot extract. Of these, it is particularly preferable that the moisturizer contains a polyhydric alcohol and/or a polyhydric alcohol polymer.
　保湿剤としての多価アルコールは、例えば、エチレングリコール、プロピレングリコール、トリメチレングリコール、１，２－ブチレングリコール、及び１，３－ブチレングリコール等の２価アルコール、並びにグリセリン等の３価アルコールを含んでよい。 The polyhydric alcohol as a moisturizing agent may include, for example, dihydric alcohols such as ethylene glycol, propylene glycol, trimethylene glycol, 1,2-butylene glycol, and 1,3-butylene glycol, as well as trihydric alcohols such as glycerin.
　また、保湿剤としての多価アルコール重合体は、例えば、ジプロピレングリコール等を含んでよい。 The polyhydric alcohol polymer serving as a moisturizing agent may contain, for example, dipropylene glycol.
　第１の本発明の組成物において、例えば製剤の安定化をより向上させる観点、又は使用性をより向上させる観点から、保湿剤は、例えば、グリセリン、ジプロピレングリコール、プロピレングリコール、及び１，３－ブチレングリコールからなる群より選択される少なくとも１つを含むことが好ましい。 In the first composition of the present invention, for example, from the viewpoint of further improving the stability of the formulation or further improving usability, the moisturizer preferably includes at least one selected from the group consisting of glycerin, dipropylene glycol, propylene glycol, and 1,3-butylene glycol.
　第１の本発明の組成物において、保湿剤の含有量は、特に限定されず、例えば、組成物全体に対して、０．５質量％以上、１．０質量％以上、２．０質量％以上、３．０質量％以上、４．０質量％以上、５．０質量％以上、６．０質量％以上、７．０質量％以上、８．０質量％以上、９．０質量％以上、１０質量％以上、１１質量％以上、１２質量％以上、１３質量％以上、又は１４質量％以上であってよく、また、３０質量％以下、２５質量％以下、２０質量％以下、１５質量％以下、又は１０質量％以下であってよい。 In the first composition of the present invention, the content of the moisturizer is not particularly limited, and may be, for example, 0.5% by mass or more, 1.0% by mass or more, 2.0% by mass or more, 3.0% by mass or more, 4.0% by mass or more, 5.0% by mass or more, 6.0% by mass or more, 7.0% by mass or more, 8.0% by mass or more, 9.0% by mass or more, 10% by mass or more, 11% by mass or more, 12% by mass or more, 13% by mass or more, or 14% by mass or more, and may be 30% by mass or less, 25% by mass or less, 20% by mass or less, 15% by mass or less, or 10% by mass or less, relative to the entire composition.
　また、第１の本発明の組成物において、例えば製剤の安定化をより向上させる観点から、保湿剤と後述するニオン界面活性剤との質量比（保湿剤／ノニオン界面活性剤）は、例えば０．２以上１０以下であってよく、より具体的には、例えば、０．２以上、０．３以上、０．４以上、０．５以上、０．６以上、０．７以上、０．８以上、０．９以上、１．０以上、２．０以上、３．０以上、４．０以上、又は５．０以上であってよく、また、１０以下、９．０以下、又は８．０以下であってよい。 In addition, in the first composition of the present invention, for example, from the viewpoint of further improving the stability of the formulation, the mass ratio of the humectant to the anionic surfactant described below (humectant/nonionic surfactant) may be, for example, 0.2 or more and 10 or less, and more specifically, for example, 0.2 or more, 0.3 or more, 0.4 or more, 0.5 or more, 0.6 or more, 0.7 or more, 0.8 or more, 0.9 or more, 1.0 or more, 2.0 or more, 3.0 or more, 4.0 or more, or 5.0 or more, and may be 10 or less, 9.0 or less, or 8.0 or less.
　〈ノニオン界面活性剤〉
　第１の本発明の組成物は、ノニオン界面活性剤を含む。 <Nonionic surfactant>
The composition of the first invention contains a nonionic surfactant.
　第１の本発明において、ノニオン界面活性剤としては、特に限定されず、例えば、ＰＯＥ－ソルビタン脂肪酸エステル（例えば、ＰＯＥ－ソルビタンモノオレエート、ＰＯＥ－ソルビタンモノステアレート、ＰＯＥ－ソルビタンモノオレエート、ＰＯＥ－ソルビタンテトラオレエート等）；ＰＯＥ－ソルビット脂肪酸エステル（例えば、ＰＯＥ－ソルビットモノラウレート、ＰＯＥ－ソルビットモノオレエート、ＰＯＥ－ソルビットペンタオレエート、ＰＯＥ－ソルビットモノステアレート等）；ＰＯＥ－グリセリン脂肪酸エステル（例えば、ＰＯＥ－グリセリンモノステアレート、ＰＯＥ－グリセリンモノイソステアレート、ＰＯＥ－グリセリントリイソステアレート等のＰＯＥ－モノオレエート等）；ＰＯＥ－脂肪酸エステル（例えば、ＰＯＥ－ジステアレート、ＰＯＥ－モノジオレエート、ジステアリン酸エチレングリコール等）；ＰＯＥ－アルキルエーテル（例えば、ＰＯＥ－ラウリルエーテル、ＰＯＥ－オレイルエーテル、ＰＯＥ－ステアリルエーテル、ＰＯＥ－ベヘニルエーテル、ＰＯＥ－２－オクチルドデシルエーテル、ＰＯＥ－コレスタノールエーテル等）；プルロニック型（例えば、プルロニック（登録商標）等）；ＰＯＥ・ＰＯＰ－アルキルエーテル（例えば、ＰＯＥ・ＰＯＰ－セチルエーテル、ＰＯＥ・ＰＯＰ－２－デシルテトラデシルエーテル、ＰＯＥ・ＰＯＰ－モノブチルエーテル、ＰＯＥ・ＰＯＰ－水添ラノリン、ＰＯＥ・ＰＯＰ－グリセリンエーテル等）；テトラＰＯＥ・テトラＰＯＰ－エチレンジアミン縮合物（例えば、テトロニック等）；ＰＯＥ－ヒマシ油硬化ヒマシ油誘導体（例えば、ＰＯＥ－ヒマシ油、ＰＯＥ－硬化ヒマシ油、ＰＯＥ－硬化ヒマシ油モノイソステアレート、ＰＯＥ－硬化ヒマシ油トリイソステアレート、ＰＯＥ－硬化ヒマシ油モノピログルタミン酸モノイソステアリン酸ジエステル、ＰＯＥ－硬化ヒマシ油マレイン酸等）；ＰＯＥ－ミツロウ・ラノリン誘導体（例えば、ＰＯＥ－ソルビットミツロウ等）；アルカノールアミド（例えば、ヤシ油脂肪酸ジエタノールアミド、ラウリン酸モノエタノールアミド、脂肪酸イソプロパノールアミド等）；ＰＯＥ－プロピレングリコール脂肪酸エステル；ＰＯＥ－アルキルアミン；ＰＯＥ－脂肪酸アミド；ショ糖脂肪酸エステル；アルキルエトキシジメチルアミンオキシド；トリオレイルリン酸等が挙げられるが、これらに限定されない。 In the first aspect of the present invention, the nonionic surfactant is not particularly limited, and examples thereof include POE-sorbitan fatty acid esters (e.g., POE-sorbitan monooleate, POE-sorbitan monostearate, POE-sorbitan monooleate, POE-sorbitan tetraoleate, etc.); POE-sorbitol fatty acid esters (e.g., POE-sorbitol monolaurate, POE-sorbitol monooleate, POE-sorbitol pentaoleate, POE-sorbitol monostearate, etc.); POE-glycerin fatty acid esters (e.g., POE-glycerin fatty acid esters). POE-monooleates such as serine monostearate, POE-glycerin monoisostearate, and POE-glycerin triisostearate; POE-fatty acid esters (e.g., POE-distearate, POE-monodioleate, and ethylene glycol distearate); POE-alkyl ethers (e.g., POE-lauryl ether, POE-oleyl ether, POE-stearyl ether, POE-behenyl ether, POE-2-octyldodecyl ether, and POE-cholestanol ether); Pluronic types (e.g., Pluronic ( registered trademark), etc.); POE·POP-alkyl ethers (e.g., POE·POP-cetyl ether, POE·POP-2-decyltetradecyl ether, POE·POP-monobutyl ether, POE·POP-hydrogenated lanolin, POE·POP-glycerin ether, etc.); tetraPOE·tetraPOP-ethylenediamine condensates (e.g., Tetronic, etc.); POE-castor oil hydrogenated castor oil derivatives (e.g., POE-castor oil, POE-hydrogenated castor oil, POE-hydrogenated castor oil monoisostearate, POE-hydrogenated castor oil tri ... These include, but are not limited to, masu oil monopyroglutamic acid monoisostearate diester, POE-hydrogenated castor oil maleic acid, etc.); POE-beeswax/lanolin derivatives (e.g., POE-sorbitol beeswax, etc.); alkanolamides (e.g., coconut oil fatty acid diethanolamide, lauric acid monoethanolamide, fatty acid isopropanolamide, etc.); POE-propylene glycol fatty acid esters; POE-alkylamines; POE-fatty acid amides; sucrose fatty acid esters; alkylethoxydimethylamine oxide; trioleyl phosphate, etc.
　なお、本明細書において、ＰＯＥはポリオキシエチレン、ＰＯＰはポリオキシプロピレンの略記で、ＰＯＥ又はＰＯＰの後ろのカッコ内の数字は当該化合物中におけるＰＯＥ基又はＰＯＰ基の平均付加モル数を表す。 In this specification, POE is an abbreviation for polyoxyethylene, and POP is an abbreviation for polyoxypropylene, and the number in parentheses after POE or POP indicates the average number of moles of POE or POP groups added in the compound.
　第１の本発明の組成物において、ノニオン界面活性剤のＨＬＢ（Ｈｙｄｒｏｐｈｉｌｅ－Ｌｉｐｏｐｈｉｌｅ　Ｂａｌａｎｃｅ）値は、特に限定されず、例えば、５．０～２０．０であってよく、より具体的には、例えば、ノニオン界面活性剤のＨＬＢ値が５．０以上、６．０以上、７．０以上、８．０以上、９．０以上、又は１０．０以上であってよく、また、２０．０以下、１９．０以下、１８．０以下、１７．０以下、１６．０以下、１５．０以下、１４．０以下、１３．０以下、１２．０以下、１１．０以下、１０．０以下、９．０以下、又は８．０以下であってよい。 In the first composition of the present invention, the HLB (hydrophile-lipophile balance) value of the nonionic surfactant is not particularly limited and may be, for example, 5.0 to 20.0. More specifically, for example, the HLB value of the nonionic surfactant may be 5.0 or more, 6.0 or more, 7.0 or more, 8.0 or more, 9.0 or more, or 10.0 or more, and may be 20.0 or less, 19.0 or less, 18.0 or less, 17.0 or less, 16.0 or less, 15.0 or less, 14.0 or less, 13.0 or less, 12.0 or less, 11.0 or less, 10.0 or less, 9.0 or less, or 8.0 or less.
　また、例えば製剤の均一性をより向上させる観点から、ノニオン界面活性剤のＨＬＢ値が１０．０～１９．０であってよく、１５．０～１９．０であることが好ましい。なお、第１の本発明において、ＨＬＢ値は、グリフィン法によって定義することができる。ただし、オキシプロピレン構造をもつ界面活性剤の場合は、川上法によって定義することができる。 In addition, from the viewpoint of further improving the uniformity of the formulation, for example, the HLB value of the nonionic surfactant may be 10.0 to 19.0, and preferably 15.0 to 19.0. In the first invention, the HLB value can be defined by the Griffin method. However, in the case of a surfactant having an oxypropylene structure, it can be defined by the Kawakami method.
　また、第１の本発明の組成物において、異なるＨＬＢ値を有するノニオン界面活性剤を用いることができる。例えば、ノニオン界面活性剤は、第１のノニオン界面活性剤と、第１のノニオン界面活性剤よりもＨＬＢが低い第２のノニオン界面活性剤と、を含むことができる。なお、ノニオン界面活性剤は３種類以上を併用してよい。 In addition, in the first composition of the present invention, nonionic surfactants having different HLB values can be used. For example, the nonionic surfactant may include a first nonionic surfactant and a second nonionic surfactant having a lower HLB value than the first nonionic surfactant. It is also possible to use three or more types of nonionic surfactants in combination.
　例えば、複数のノニオン界面活性剤のＨＬＢ加重平均値は１０以上であると好ましく、１２以上であるとより好ましい。複数のノニオン界面活性剤のＨＬＢ加重平均値は１８以下であると好ましく、１６以下であるとより好ましい。例えば、第１のノニオン界面活性剤はＨＬＢ値１４．０以上又はＨＬＢ値１５．０以上とすることができる。第２のノニオン界面活性剤はＨＬＢ値６．０～１３．０とすることができる。ここで、ＨＬＢ加重平均値とは、ノニオン界面活性剤の質量割合を加味して算出したＨＬＢの平均値である。例えば、ＨＬＢ値１４．０の第１の界面活性剤２０ｇとＨＬＢ値１０．０の第２の界面活性剤８０ｇの混合物のＨＬＢ加重平均値は１３．２（＝（ＨＬＢ１４．０×８０ｇ＋ＨＬＢ１０．０×２０ｇ）／（８０ｇ＋２０ｇ））となる。ＨＬＢ加重平均値をこのように設定することにより、後述するスポンジ相を形成することができる。 For example, the weighted average HLB value of the multiple nonionic surfactants is preferably 10 or more, and more preferably 12 or more. The weighted average HLB value of the multiple nonionic surfactants is preferably 18 or less, and more preferably 16 or less. For example, the first nonionic surfactant can have an HLB value of 14.0 or more or an HLB value of 15.0 or more. The second nonionic surfactant can have an HLB value of 6.0 to 13.0. Here, the weighted average HLB value is the average HLB value calculated taking into account the mass proportion of the nonionic surfactant. For example, the weighted average HLB value of a mixture of 20 g of a first surfactant with an HLB value of 14.0 and 80 g of a second surfactant with an HLB value of 10.0 is 13.2 (= (HLB 14.0 x 80 g + HLB 10.0 x 20 g) / (80 g + 20 g)). By setting the HLB weighted average value in this way, it is possible to form the sponge phase described below.
　より具体的には、例えば、第１のノニオン界面活性剤及び第２のノニオン界面活性剤は、それぞれ、ポリオキシアルキレングリセリン脂肪酸エステルとすることができる。第１のノニオン界面活性剤としては、例えば、ＨＬＢ値１６．０のイソステアリン酸ＰＥＧ－６０グリセリル等を使用することができる。第２のノニオン界面活性剤としては、例えば、ＨＬＢ値８．０のトリイソステアリン酸ＰＥＧ－２０グリセリル、ＨＬＢ値１０．０のイソステアリン酸ＰＥＧ－８グリセリル、ＨＬＢ値１３．０のヤシ油脂肪酸ＰＥＧ－７グリセリル、ＨＬＢ値１３．０のイソステアリン酸ＰＥＧ－１５グリセリル等を使用することができる。 More specifically, for example, the first nonionic surfactant and the second nonionic surfactant can each be a polyoxyalkylene glycerin fatty acid ester. As the first nonionic surfactant, for example, PEG-60 glyceryl isostearate with an HLB value of 16.0 can be used. As the second nonionic surfactant, for example, PEG-20 glyceryl triisostearate with an HLB value of 8.0, PEG-8 glyceryl isostearate with an HLB value of 10.0, PEG-7 glyceryl coconut oil fatty acid with an HLB value of 13.0, PEG-15 glyceryl isostearate with an HLB value of 13.0, etc. can be used.
　第１の本発明の組成物において、ノニオン界面活性剤の含有量は、特に限定されず、例えば、組成物全体に対して、０．１質量％以上、０．２質量％以上、０．５質量％以上、０．８質量％以上、１．０質量％以上、１．２質量％以上、１．５質量％以上、１．８質量％以上、又は２．０質量％以上であってよく、また、１０質量％以下、９．０質量％以下、８．０質量％以下、７．０質量％以下、６．０質量％以下、５．０質量％以下、４．０質量％以下、又は３．０質量％以下であってよい。 In the first composition of the present invention, the content of the nonionic surfactant is not particularly limited, and may be, for example, 0.1 mass% or more, 0.2 mass% or more, 0.5 mass% or more, 0.8 mass% or more, 1.0 mass% or more, 1.2 mass% or more, 1.5 mass% or more, 1.8 mass% or more, or 2.0 mass% or more, and may be 10 mass% or less, 9.0 mass% or less, 8.0 mass% or less, 7.0 mass% or less, 6.0 mass% or less, 5.0 mass% or less, 4.0 mass% or less, or 3.0 mass% or less, relative to the entire composition.
　また、ノニオン界面活性剤として、上述したように第１のノニオン界面活性剤と第２のノニオン界面活性剤とを併用している場合には、第１のノニオン界面活性剤の含有量は、例えば、組成物全体に対して、０．１質量％以上、０．５質量％以上、０．８質量％以上、１質量％以上、１．２質量％以上、又は１．５質量％以上であってよく、また、５．０質量％以下、４．５質量％以下、３．５質量％以下、又は３．０質量％以下であってよい。また、第２のノニオン界面活性剤の含有量は、例えば、組成物全体に対して、０．０２質量％以上、０．０５質量％以上、０．１質量％以上、又は０．２質量％以上であってよく、また、３．０質量％以下、２．５質量％以下、２．０質量％以下、１．５質量％以下、１．０質量％以下、０．８質量％以下、又は０．５質量％以下であってよい。 In addition, when the first nonionic surfactant and the second nonionic surfactant are used in combination as described above, the content of the first nonionic surfactant may be, for example, 0.1 mass% or more, 0.5 mass% or more, 0.8 mass% or more, 1 mass% or more, 1.2 mass% or more, or 1.5 mass% or more, and may be 5.0 mass% or less, 4.5 mass% or less, 3.5 mass% or less, or 3.0 mass% or less, relative to the entire composition. In addition, the content of the second nonionic surfactant may be, for example, 0.02 mass% or more, 0.05 mass% or more, 0.1 mass% or more, or 0.2 mass% or more, and may be 3.0 mass% or less, 2.5 mass% or less, 2.0 mass% or less, 1.5 mass% or less, 1.0 mass% or less, 0.8 mass% or less, or 0.5 mass% or less, relative to the entire composition.
　〈第１の本発明のポリマー〉
　第１の本発明のポリマーは、下記式（１）で表される構造を有する：
 <Polymer of the First Invention>
The first polymer of the present invention has a structure represented by the following formula (1):
　式（１）において、Ｒ１、Ｒ２及びＲ３は、それぞれ独立して、水素原子又は炭素数１～４のアルキル基である。なお、第１の本発明において、炭素数１～４のアルキル基として、例えばメチル基、エチル基、ｎ－プロピル基、イソプロピル基、ｎ－ブチル基、ｓｅｃ－ブチル基、及びｔｅｒｔ－ブチル基等が挙げられる。また、第１の本発明の効果を損なわない限り、これらのアルキル基は、更に置換基を有していてもよい。置換基としては、特に限定されず、例えばハロゲノ基等が挙げられる。 In formula (1), R 1 , R 2 and R 3 are each independently a hydrogen atom or an alkyl group having 1 to 4 carbon atoms. In the first invention, examples of the alkyl group having 1 to 4 carbon atoms include a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, a sec-butyl group and a tert-butyl group. In addition, as long as the effect of the first invention is not impaired, these alkyl groups may further have a substituent. The substituent is not particularly limited, and examples thereof include a halogeno group.
　第１の本発明の一実施形態によれば、式（１）において、Ｒ１、Ｒ２及びＲ３は、それぞれ独立して、水素原子、メチル基、エチル基、ｎ－プロピル基、イソプロピル基、ｎ－ブチル基、ｓｅｃ－ブチル基、又はｔｅｒｔ－ブチル基であってよい。 According to a first embodiment of the present invention, in formula (1), R 1 , R 2 and R 3 may each independently be a hydrogen atom, a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, a sec-butyl group, or a tert-butyl group.
　第１の本発明の一実施形態によれば、式（１）において、Ｒ１は、水素原子、メチル基又はエチル基であることが好ましい。また、ｍが２以上である場合、すなわち、複数のＲ１が存在する場合、各々のＲ１は、それぞれ同じであってもよく、異なっていてもよく、特に、Ｒ１の少なくとも一部は、メチル基であることが好ましい。Ｒ１の少なくとも一部がメチル基である場合には、例えば、第１の本発明の組成物の使用感を向上させる観点から好ましい。 According to the first embodiment of the present invention, in formula (1), R 1 is preferably a hydrogen atom, a methyl group, or an ethyl group. When m is 2 or more, that is, when a plurality of R 1 are present, each R 1 may be the same or different, and it is particularly preferable that at least a part of R 1 is a methyl group. When at least a part of R 1 is a methyl group, it is preferable from the viewpoint of improving the feeling of use of the composition of the first invention, for example.
　第１の本発明の一実施形態によれば、式（１）において、Ｒ１は、水素原子と炭素数１～４のアルキル基とが混在していている状態であってよい。すなわち、Ｒ１の一部は水素原子であり、かつ他の一部は炭素数１～４のアルキル基であってよい。好ましくは、Ｒ１の一部は水素原子であり、かつ他の一部はメチル基である。 According to a first embodiment of the present invention, in formula (1), R 1 may be in a state where hydrogen atoms and alkyl groups having 1 to 4 carbon atoms are mixed. That is, a part of R 1 may be a hydrogen atom, and another part may be an alkyl group having 1 to 4 carbon atoms. Preferably, a part of R 1 is a hydrogen atom, and another part is a methyl group.
　第１の本発明の一実施形態によれば、式（１）において、Ｒ２は、水素原子、メチル基又はエチル基であることが好ましく、特に、メチル基であることがより好ましい。 According to the first embodiment of the present invention, in formula (1), R2 is preferably a hydrogen atom, a methyl group, or an ethyl group, and more preferably a methyl group.
　第１の本発明の一実施形態によれば、式（１）において、Ｒ２は、水素原子と炭素数１～４のアルキル基とが混在していている状態であってよい。すなわち、Ｒ２の一部は水素原子であり、かつ他の一部は炭素数１～４のアルキル基であってよい。好ましくは、Ｒ２の一部は水素原子であり、かつ他の一部はメチル基である。 According to the first embodiment of the present invention, in formula (1), R2 may be a mixture of hydrogen atoms and alkyl groups having 1 to 4 carbon atoms. That is, a portion of R2 may be a hydrogen atom, and another portion may be an alkyl group having 1 to 4 carbon atoms. Preferably, a portion of R2 is a hydrogen atom, and another portion is a methyl group.
　第１の本発明の一実施形態によれば、式（１）において、Ｒ３は、水素原子、メチル基又はエチル基であることが好ましく、特に、メチル基であることがより好ましい。 According to the first embodiment of the present invention, in formula (1), R 3 is preferably a hydrogen atom, a methyl group, or an ethyl group, and more preferably a methyl group.
　第１の本発明の一実施形態によれば、式（１）において、Ｒ２及びＲ３の少なくとも一方は、メチル基であることが好ましい。 According to the first embodiment of the present invention, in formula (1), at least one of R2 and R3 is preferably a methyl group.
　式（１）において、Ａは、炭素数２～４のアルキレン基である。より具体的には、Ａは例えば、エチレン基、プロピレン基、ブチレン基、イソブチレン基等であってよいが、これらに限定されない。特に、Ａは、下記式（２）で表されることが好ましい：
 In formula (1), A is an alkylene group having 2 to 4 carbon atoms. More specifically, A may be, for example, an ethylene group, a propylene group, a butylene group, an isobutylene group, etc., but is not limited thereto. In particular, A is preferably represented by the following formula (2):
　式（２）において、Ｒ４は、炭素数１又は２のアルキル基である。より具体的には、Ｒ４は、メチル基又はエチル基であってよい。 In formula (2), R4 is an alkyl group having 1 or 2 carbon atoms. More specifically, R4 may be a methyl group or an ethyl group.
　式（１）において、ｍ及びｎは、それぞれの構成単位の平均付加モル数を表す。ｍ及びｎは、それぞれ独立して、１．０～５０であり、より具体的には、１．０以上、１．５以上、２．０以上、３．０以上、４．０以上、５．０以上、６．０以上、７．０以上、８．０以上、９．０以上、又は１０以上であってよく、また５０以下、４５以下、４０以下、３５以下、３４以下、３２以下、３０以下、２８以下、２６以下、２５以下、２４以下、２２以下、２０以下、１８以下、１６以下、１５以下、１４以下、１２以下、１０以下、又は５．０以下であってよい。 In formula (1), m and n represent the average number of moles added of each structural unit. m and n are each independently 1.0 to 50, and more specifically may be 1.0 or more, 1.5 or more, 2.0 or more, 3.0 or more, 4.0 or more, 5.0 or more, 6.0 or more, 7.0 or more, 8.0 or more, 9.0 or more, or 10 or more, or may be 50 or less, 45 or less, 40 or less, 35 or less, 34 or less, 32 or less, 30 or less, 28 or less, 26 or less, 25 or less, 24 or less, 22 or less, 20 or less, 18 or less, 16 or less, 15 or less, 14 or less, 12 or less, 10 or less, or 5.0 or less.
　また、式（１）において、ｍは、１．０以上１４以下であることが好ましく、２．０以上５．０以下であることがより好ましい。また、式（１）において、ｎは、２．０以上３４以下であることが好ましく、６．０以上１２以下であることがより好ましい。 In addition, in formula (1), m is preferably 1.0 or more and 14 or less, and more preferably 2.0 or more and 5.0 or less. In addition, in formula (1), n is preferably 2.0 or more and 34 or less, and more preferably 6.0 or more and 12 or less.
　第１の本発明の一実施形態によれば、式（１）において、ｍ＋ｎは、４．０以上、４．５以上、５．０以上、６．０以上、７．０以上、８．０以上、９．０以上、１０以上、１１以上、１２以上、１３以上、１４以上、又は１５以上であってよく、また５０以下、４５以下、４０以下、３５以下、３０以下、２５以下、２０以下、１５以下、又は１２以下であってよい。 According to a first embodiment of the present invention, in formula (1), m+n may be 4.0 or more, 4.5 or more, 5.0 or more, 6.0 or more, 7.0 or more, 8.0 or more, 9.0 or more, 10 or more, 11 or more, 12 or more, 13 or more, 14 or more, or 15 or more, and may be 50 or less, 45 or less, 40 or less, 35 or less, 30 or less, 25 or less, 20 or less, 15 or less, or 12 or less.
　第１の本発明の一実施形態によれば、式（１）において、ｍ：ｎは、１：１０～１０：１であってよい。 According to a first embodiment of the present invention, in formula (1), m:n may be 1:10 to 10:1.
　第１の本発明のポリマーは、数平均分子量は、１０，０００以下である。より具体的には、第１の本発明のポリマーの数平均分子量は、例えば、１０，０００以下、５，０００以下、３，５００以下、３，０００以下、２，５００以下、２，０００以下、１，５００以下、１，４００以下、１，３００以下、１，２００以下、１，１００以下、１，０００以下、９００以下、８００以下、７００以下、又は６００以下であってよく、また１３０以上、１５０以上、２００以上、２５０以上、３００以上、３５０以上、４００以上、４５０以上、又は５００以上であってよい。また、第１の本発明のポリマーの数平均分子量は、３００以上３，５００以下であることが好ましく、５００以上１，２００以下であることがより好ましい。 The number average molecular weight of the first polymer of the present invention is 10,000 or less. More specifically, the number average molecular weight of the first polymer of the present invention may be, for example, 10,000 or less, 5,000 or less, 3,500 or less, 3,000 or less, 2,500 or less, 2,000 or less, 1,500 or less, 1,400 or less, 1,300 or less, 1,200 or less, 1,100 or less, 1,000 or less, 900 or less, 800 or less, 700 or less, or 600 or less, or may be 130 or more, 150 or more, 200 or more, 250 or more, 300 or more, 350 or more, 400 or more, 450 or more, or 500 or more. The number average molecular weight of the first polymer of the present invention is preferably 300 or more and 3,500 or less, and more preferably 500 or more and 1,200 or less.
　第１の本発明のポリマーのＩＯＢ値は、０．４～１．８である。より具体的には、第１の本発明のポリマーのＩＯＢ値は、例えば、０．４以上、０．５以上、０．６以上、又は０．７以上であってよく、また１．８以下、１．６以下、１．４以下、又は１．２以下であってよい。また、第１の本発明のポリマーのＩＯＢ値は、０．７以上１．２以下であることが好ましい。 The IOB value of the first polymer of the present invention is 0.4 to 1.8. More specifically, the IOB value of the first polymer of the present invention may be, for example, 0.4 or more, 0.5 or more, 0.6 or more, or 0.7 or more, and may be 1.8 or less, 1.6 or less, 1.4 or less, or 1.2 or less. The IOB value of the first polymer of the present invention is preferably 0.7 or more and 1.2 or less.
　ここで、ＩＯＢ値とは、Ｉｎｏｒｇａｎｉｃ／Ｏｒｇａｎｉｃ Ｂａｌａｎｃｅ（無機性／有機性比）の略であって、無機性値の有機性値に対する比率を表す値であり、有機化合物の極性の度合いを示す指標となるものである。ＩＯＢ値は、具体的には、ＩＯＢ値＝無機性値／有機性値として表される。「無機性値」、「有機性値」のそれぞれについては、例えば、分子中の炭素原子１個について「有機性値」が２０、水酸基１個について「無機性値」が１００といったように、各種原子又は官能基に応じた「無機性値」、「有機性値」が設定されており、有機化合物中の全ての原子及び官能基の「無機性値」、「有機性値」を積算することによって、当該有機化合物のＩＯＢ値を算出することができる（例えば、甲田善生著、「有機概念図－基礎と応用－」、ｐ．１１～１７、三共出版、１９８４年発行参照）。なお、ＩＯＢ値の決定方法については、実施例に記載の方法を参照できる。 Here, the IOB value is an abbreviation for Inorganic/Organic Balance, which is a value that indicates the ratio of inorganic value to organic value, and is an index showing the degree of polarity of an organic compound. Specifically, the IOB value is expressed as IOB value = inorganic value / organic value. For each of the "inorganic value" and "organic value", "inorganic value" is set according to various atoms or functional groups, for example, the "organic value" for one carbon atom in a molecule is 20, and the "inorganic value" for one hydroxyl group is 100. The IOB value of an organic compound can be calculated by accumulating the "inorganic value" and "organic value" of all atoms and functional groups in the organic compound (for example, see "Organic Concept Diagram - Basics and Applications" by Yoshio Koda, pp. 11-17, Sankyo Publishing, 1984). For a method for determining the IOB value, see the method described in the Examples.
　第１の本発明のポリマーは、ブロック共重合体であってもよく、ランダム共重合体であってもよいが、ランダム共重合体であることが好ましい。 The first polymer of the present invention may be a block copolymer or a random copolymer, but is preferably a random copolymer.
　第１の本発明のポリマーの製造方法は、特に限定されず、例えば、各構成単位に対応するエポキシドを付加重合することによって行ったよい。また、付加重合は、ブロック重合であってもよく、ランダム重合であってもよいが、ランダム重合であることが好ましい。 The method for producing the first polymer of the present invention is not particularly limited, and may be carried out, for example, by addition polymerization of epoxides corresponding to each structural unit. The addition polymerization may be block polymerization or random polymerization, but random polymerization is preferred.
　また、第１の本発明のポリマーの製造方法は、上記の付加重合によって得られたポリマーに対して、更にハロゲン化アルキルと反応させることを更に含んでよい。ハロゲン化アルキルとの反応を介して、得られたポリマーの分子内の水酸基は、アルキル基によって封鎖されて、その結果ポリマー全体の疎水性を所望のとおりに調整することができる。本発明において、ポリマーの分子内において、アルキル基による水酸基の封鎖率は、例えば３０％以上、３５％以上、４０％以上、４５％以上、５０％以上、又は５５％以上であってよく、また６０％以下、５９％以下、５８％以下、５７％以下、５６％以下、又は５５％以下であってよい。なお、アルキル基による水酸基の封鎖率は、実施例に記載の方法によって求めることができる。 The first method for producing a polymer of the present invention may further include reacting the polymer obtained by the above-mentioned addition polymerization with an alkyl halide. Through the reaction with the alkyl halide, the hydroxyl groups in the obtained polymer molecule are blocked with alkyl groups, and as a result, the hydrophobicity of the entire polymer can be adjusted as desired. In the present invention, the blocking rate of hydroxyl groups by alkyl groups in the polymer molecule may be, for example, 30% or more, 35% or more, 40% or more, 45% or more, 50% or more, or 55% or more, and may be 60% or less, 59% or less, 58% or less, 57% or less, 56% or less, or 55% or less. The blocking rate of hydroxyl groups by alkyl groups can be determined by the method described in the Examples.
　第１の本発明のポリマーの特徴の一つとして、高い水溶性及び高い脂溶性を兼備することである。 One of the characteristics of the first polymer of the present invention is that it has both high water solubility and high lipid solubility.
　第１の本発明のポリマーの水への溶解度は、例えば、１０質量％以上、２０質量％以上、３０質量％以上、４０質量％以上、又は５０質量％以上であり得る。 The solubility of the first polymer of the present invention in water can be, for example, 10% by mass or more, 20% by mass or more, 30% by mass or more, 40% by mass or more, or 50% by mass or more.
　また、第１の本発明のポリマーの脂溶性の指標として、例えばオリーブ油への溶解度を用いることができる。本発明のポリマーのオリーブ油への溶解度は、例えば、０．０１質量％以上、０．０５質量％以上、０．１０質量％以上、０．５０質量％以上、又は１．００質量％以上であり得る。なお、本発明のポリマーのオリーブ油への溶解度の上限値は特に限定されず、例えば１０質量％以下であってよい。 Furthermore, the solubility in olive oil, for example, can be used as an index of the fat-solubility of the first polymer of the present invention. The solubility of the polymer of the present invention in olive oil can be, for example, 0.01% by mass or more, 0.05% by mass or more, 0.10% by mass or more, 0.50% by mass or more, or 1.00% by mass or more. The upper limit of the solubility of the polymer of the present invention in olive oil is not particularly limited, and may be, for example, 10% by mass or less.
　第１の本発明の組成物において、第１の本発明のポリマーの含有量は、特に限定されず、例えば、０．００１質量％以上、０．００５質量％以上、０．０１質量％以上、０．０５質量％以上、０．１質量％以上、０．５質量％以上、１．０質量％以上、２．０質量％以上、３．０質量％以上、又は４．０質量％以上であってよく、また、１０．０質量％以下、９．０質量％以下、８．０質量％以下、７．０質量％以下、６．０質量％以下、５．０質量％以下、４．０質量％以下、３．０質量％以下、２．０質量％以下、又は１．０質量％以下であってよい。 In the composition of the first invention, the content of the polymer of the first invention is not particularly limited, and may be, for example, 0.001 mass% or more, 0.005 mass% or more, 0.01 mass% or more, 0.05 mass% or more, 0.1 mass% or more, 0.5 mass% or more, 1.0 mass% or more, 2.0 mass% or more, 3.0 mass% or more, or 4.0 mass% or more, and may be 10.0 mass% or less, 9.0 mass% or less, 8.0 mass% or less, 7.0 mass% or less, 6.0 mass% or less, 5.0 mass% or less, 4.0 mass% or less, 3.0 mass% or less, 2.0 mass% or less, or 1.0 mass% or less.
　〈その他の成分〉
　第１の本発明の組成物は、本発明の効果を損なわない限り、その他の成分を更に含んでよい。以下では、その他の成分について、例示的に説明するが、第１の本発明はこれらに限定されることはない。 <Other Ingredients>
The composition of the first invention may further contain other components as long as the effects of the present invention are not impaired. The following describes examples of other components, but the first invention is not limited thereto.
　（コサーファクタント）
　第１の本発明の組成物は、コサーファクタント（「界面活性剤助剤」とも称する）を更に含んでよい。コサーファクタントとは、それ自体は溶媒中で会合体を形成することができないが、ノニオン界面活性剤とともに界面膜を形成し、ノニオン界面活性剤の界面膜の性質を変化させることのできる物質である。本発明において、コサーファクタントは、ノニオン界面活性剤によるスポンジ相の形成に寄与する。 (Cosurfactant)
The composition of the first invention may further include a cosurfactant (also called a "surfactant assistant"). A cosurfactant is a substance that cannot form an association in a solvent by itself, but can form an interfacial film together with a nonionic surfactant and change the properties of the interfacial film of the nonionic surfactant. In the present invention, the cosurfactant contributes to the formation of a sponge phase by the nonionic surfactant.
　コサーファクタントは、例えば、アルキルグリセロール及びグリセリン脂肪酸エステルからなる群から選択される少なくとも１つの成分とすることができる。アルキルグリセロールとしては、例えば、エチルヘキシルグリセリンを挙げることができる。なお、ここで、グリセリン脂肪酸エステルには、ポリグリセリン脂肪酸エステルも含み得る。グリセリン脂肪酸エステルとしては、例えば、ラウリン酸ポリグリセリル－２、カプリン酸ポリグリセリル－２を挙げることができる。 The cosurfactant may be, for example, at least one component selected from the group consisting of alkyl glycerols and glycerin fatty acid esters. An example of an alkyl glycerol is ethylhexyl glycerin. Note that the glycerin fatty acid ester may also include polyglycerin fatty acid esters. Examples of the glycerin fatty acid esters include polyglyceryl-2 laurate and polyglyceryl-2 caprate.
　また、コサーファクタントの中で、例えば、エチルヘキシルグリセリン等の成分は、通常、水には溶けにくいか又は溶けない性質を有しているが、本発明の組成物の特有の処方において、水に溶けることができる。すなわち、第１の本発明の組成物は、エチルヘキシルグリセリンを含んだ場合においても、ノニオン界面活性剤との相互作用等によって均一にでき、すなわち可溶化系に調製され得る。また、この場合、第１の本発明の組成物は、透明であり得る。 Furthermore, among the cosurfactants, for example, components such as ethylhexylglycerin are usually poorly soluble or insoluble in water, but in the specific formulation of the composition of the present invention, they can be dissolved in water. That is, even when the first composition of the present invention contains ethylhexylglycerin, it can be made homogenous through interactions with nonionic surfactants, i.e., it can be prepared into a solubilized system. In this case, the first composition of the present invention can be transparent.
　第１の本発明の組成物において、コサーファクタントを含む場合のその含有量は、特に限定されず、例えば、組成物全体に対して、０．０５質量％以上、０．１質量％以上、０．２質量％以上、０．３質量％以上、又は０．４質量％以上であってよく、また１０．０質量％以下、５．０質量％以下、１．０質量％以下、又は０．５質量％以下であってよい。 In the first composition of the present invention, when a cosurfactant is included, its content is not particularly limited, and may be, for example, 0.05 mass% or more, 0.1 mass% or more, 0.2 mass% or more, 0.3 mass% or more, or 0.4 mass% or more, and may be 10.0 mass% or less, 5.0 mass% or less, 1.0 mass% or less, or 0.5 mass% or less, relative to the entire composition.
　また、コサーファクタントを含む場合において、コサーファクタントとノニオン界面活性剤と質量比は、例えば、ノニオン界面活性剤（総量）１．０質量部に対して、コサーファクタントの総量は０．１質量部以上、０．３質量部以上、又は０．５質量部以上であってよく、また０．９質量部以下、又は０．７質量部以下であってよい。 In addition, when a cosurfactant is included, the mass ratio of the cosurfactant to the nonionic surfactant may be, for example, 0.1 parts by mass or more, 0.3 parts by mass or more, or 0.5 parts by mass or more per 1.0 part by mass of the nonionic surfactant (total amount), and may be 0.9 parts by mass or less, or 0.7 parts by mass or less.
　（防腐剤）
　第１の本発明の組成物は、防腐剤を更に含んでよい。防腐剤として、例えばフェノキシエタノール等を用いてよい。また、このフェノキシエタノールは、通常、水には溶けにくいか又は溶けない性質を有しているが、第１の本発明の組成物の特有の処方において、水に溶けることができる。すなわち、第１の本発明の組成物は、フェノキシエタノールを含んだ場合においても、ノニオン界面活性剤との相互作用等によって均一にでき、すなわち可溶化系に調製され得る。また、この場合、第１の本発明の組成物は、透明であり得る。 (Preservative)
The first composition of the present invention may further include a preservative. For example, phenoxyethanol may be used as the preservative. In addition, this phenoxyethanol is usually poorly soluble or insoluble in water, but it can be dissolved in water in the specific formulation of the first composition of the present invention. That is, even when the first composition of the present invention contains phenoxyethanol, it can be homogenized by interaction with a nonionic surfactant, that is, it can be prepared into a solubilized system. In this case, the first composition of the present invention may be transparent.
　第１の本発明の組成物において、防腐剤を含む場合のその含有量は、特に限定されず、例えば、組成物全体に対して、０．０５質量％以上、０．１質量％以上、０．２質量％以上、０．３質量％以上、又は０．４質量％以上であってよく、また１０．０質量％以下、５．０質量％以下、１．０質量％以下、又は０．５質量％以下であってよい。 In the first composition of the present invention, when a preservative is included, its content is not particularly limited, and may be, for example, 0.05 mass% or more, 0.1 mass% or more, 0.2 mass% or more, 0.3 mass% or more, or 0.4 mass% or more, and may be 10.0 mass% or less, 5.0 mass% or less, 1.0 mass% or less, or 0.5 mass% or less, relative to the entire composition.
　（油性成分）
　第１の本発明の組成物は、油性成分を更に含んでよい。油性成分は、べたつかず、みずみずしさを向上させる観点から、組成物全体に対して、１．０質量％以下であると好ましく、０．５質量％以下であるとより好ましく、第１の本発明の組成物に実質的に含まれないと好ましい。 (Oily ingredients)
The composition of the first invention may further contain an oily component. From the viewpoint of improving the freshness and non-stickiness of the composition, the oily component is preferably 1.0% by mass or less, more preferably 0.5% by mass or less, based on the total mass of the composition, and is preferably substantially not contained in the composition of the first invention.
　（イオン性界面活性剤）
　第１の本発明の組成物は、イオン性界面活性剤を更に含んでよい。イオン性界面活性剤としては、例えば、アニオン性界面活性剤、カチオン性界面活性剤及び両性界面活性剤が挙げられる。イオン性界面活性剤は、総合的な使用感を向上させる観点から、組成物全体に対して、０．１質量％以下であると好ましく、０．０５質量％以下であることがより好ましく、０．０１質量％以下であることが更に好ましく、０．００５質量％未満であることがより更に好ましく、特に、本発明の組成物に実質的に含まれないと好ましい。 (Ionic Surfactant)
The first composition of the present invention may further contain an ionic surfactant. Examples of the ionic surfactant include an anionic surfactant, a cationic surfactant, and an amphoteric surfactant. From the viewpoint of improving the overall feeling of use, the ionic surfactant is preferably 0.1 mass% or less, more preferably 0.05 mass% or less, even more preferably 0.01 mass% or less, and even more preferably less than 0.005 mass%, and particularly preferably is not substantially contained in the composition of the present invention.
　（任意成分）
　第１の本発明の組成物は、任意成分として、例えば、水溶性アルコール、アルキレンオキシド誘導体、水溶性高分子、増粘剤、皮膜剤、紫外線吸収剤、金属イオン封鎖剤、アミノ酸、有機アミン、高分子エマルジョン、ｐＨ調整剤、皮膚栄養剤、ビタミン、酸化防止剤、酸化防止助剤、香料等を必要に応じて適宜含有することができる。 (Optional ingredients)
The composition of the first invention may contain, as optional components, appropriate amounts as needed, such as water-soluble alcohols, alkylene oxide derivatives, water-soluble polymers, thickeners, film-forming agents, UV absorbers, sequestering agents, amino acids, organic amines, polymer emulsions, pH adjusters, skin nutrients, vitamins, antioxidants, antioxidant assistants, fragrances, and the like.
　〈第１の本発明の組成物の形態〉
　第１の本発明の組成物は、ノニオン界面活性剤を構成要素とするスポンジ相を有してよい。 <Form of the composition of the first aspect of the present invention>
The composition of the first invention may have a sponge phase containing a nonionic surfactant as a component.
　なお、スポンジ相とは、水中で界面活性剤が無限に会合して連続となり、連続会合体の親水基間に水を保持したものをいう。水の形状はランダムであり規則性はない。界面活性剤の親油基は他の界面活性剤の親油基と向かい合った配置になっている。したがって、スポンジ相は、界面活性剤の二分子膜が水を仕切って微小な水のドメインを形成したもの、ということもできる。なお、スポンジ相の確認方法は、例えば、特許文献１に開示されている方法を適宜用いてよい。 The sponge phase refers to a state in which surfactants are infinitely associated in water to form a continuous mass, with water held between the hydrophilic groups of the continuous mass. The shape of the water is random and has no regularity. The lipophilic groups of one surfactant are arranged opposite the lipophilic groups of other surfactants. Therefore, the sponge phase can be said to be a state in which a bilayer membrane of the surfactant separates the water, forming tiny water domains. The sponge phase can be confirmed, for example, by using the method disclosed in Patent Document 1 as appropriate.
　スポンジ相を有する洗浄料組成物は、油性成分を含有していなくとも高い洗浄力を有している。また、スポンジ相を有する洗浄料組成物の外観は、透明性（半透明含む）を有している。 　A cleansing composition having a sponge phase has high cleansing power even if it does not contain an oily component. In addition, the appearance of a cleansing composition having a sponge phase is transparent (including translucent).
　第１の本発明の組成物の剤型は、特に限定されないが、さっぱりしてべたつかない使用感を向上させる観点から、可溶化系であることが好ましい。 The formulation of the first composition of the present invention is not particularly limited, but it is preferably a solubilized system from the viewpoint of improving the refreshing and non-sticky feel when used.
　〈第１の本発明の組成物の用途〉
　本発明の組成物は、肌の洗浄料に適用することができる。例えば、第１の本発明の組成物は、メイク落とし用であることができる。更に、第１の本発明の組成物は、肌に塗布したウォータープルーフタイプの化粧料の除去に適用することができる。また第１の、本発明の組成物で拭き取って汚れを除去することができる。 <Use of the composition of the first aspect of the present invention>
The composition of the present invention can be applied to skin cleansing products. For example, the first composition of the present invention can be used to remove makeup. Furthermore, the first composition of the present invention can be applied to remove waterproof cosmetics applied to the skin. Also, the first composition of the present invention can be used to remove dirt by wiping.
　〈第１の本発明の組成物の製造方法〉
　第１の本発明の組成物の製造方法は、特に限定されず、例えば、上記各成分を混合することによって製造することができる。 <Method for producing the composition of the first aspect of the present invention>
The method for producing the composition of the first invention is not particularly limited, and it can be produced, for example, by mixing the above-mentioned components.
　［第２の本発明］
　以下、第２の本発明の実施の形態について詳述する。なお、第２の本発明は、以下の実施の形態に限定されるものではなく、発明の本旨の範囲内で種々変形して実施できる。 [Second aspect of the present invention]
The second embodiment of the present invention will be described in detail below. Note that the second embodiment of the present invention is not limited to the following embodiment, and can be modified in various ways within the scope of the present invention.
　《洗浄料組成物》
　第２の本発明の洗浄料組成物（以下、単に「第２の本発明の組成物」とも称する）は、
　水と、
　高級脂肪酸及び／又はその塩と、
　下記式（１）で表される構造を有するポリマーと
を含み、
　式（１）において、Ｒ１、Ｒ２及びＲ３は、それぞれ独立して、水素原子又は炭素数１～４のアルキル基であり、Ａは、炭素数２～４のアルキレン基であり、かつｍ及びｎは、それぞれ独立して、１．０～５０であり、
　ポリマーの数平均分子量が、１０，０００以下であり、かつ
　ポリマーのＩＯＢ値が、０．４～１．８である、
洗浄料組成物
である。 Cleansing composition
The second cleansing composition of the present invention (hereinafter, also simply referred to as the "second composition of the present invention") comprises:
water and,
A higher fatty acid and/or a salt thereof,
and a polymer having a structure represented by the following formula (1):
In formula (1), R 1 , R 2 and R 3 each independently represent a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, A represents an alkylene group having 2 to 4 carbon atoms, and m and n each independently represent an integer from 1.0 to 50.
The number average molecular weight of the polymer is 10,000 or less, and the IOB value of the polymer is 0.4 to 1.8.
A cleansing composition.
　第２の本発明の組成物は、水溶けが良く、かつ洗浄後に良好なしっとりさを有する。また、第２の本発明の組成物は、水溶けが良い故に、起泡性も良い。 The second composition of the present invention is highly soluble in water and has good moisturizing properties after washing. In addition, the second composition of the present invention has good foaming properties because of its high solubility in water.
　理論に限定されるものではないが、これは、第２の本発明のポリマーの特性、すなわち上記式（１）で示す特有の構造、特定の範囲の数平均分子量（１０，０００以下）、及び特定の範囲のＩＯＢ（Ｉｎｏｒｇａｎｉｃ　Ｏｒｇａｎｉｃ　Ｂａｌａｎｃｅ）値（０．４～１．８）に由来するものと推測する。 Without being limited by theory, it is speculated that this is due to the characteristics of the second polymer of the present invention, namely, the unique structure shown in formula (1) above, the number average molecular weight in a specific range (10,000 or less), and the IOB (Inorganic Organic Balance) value in a specific range (0.4 to 1.8).
　また、特定の構造をもつ第２の本発明のポリマーは、両親媒性であり、水相に溶解する傾向があるものの、疎水的な性質も有するため、第２の本発明の組成物に含まれる高級脂肪酸及び／又はその塩や他の成分（例えば、保湿剤やノニオン界面活性剤等）、及びメイクの成分等との親和性もよく、皮膚との親和性もよいと考えられる。 In addition, the second polymer of the present invention, which has a specific structure, is amphiphilic and tends to dissolve in an aqueous phase, but also has hydrophobic properties, so it is believed to have good affinity with the higher fatty acids and/or salts thereof and other ingredients (e.g., moisturizers, nonionic surfactants, etc.) contained in the second composition of the present invention, as well as with makeup ingredients, and to have good affinity with the skin.
　一般的に、洗浄料組成物の水溶けを改良するためにはポリエチレングリコール骨格を有する化合物が用いられる。これに対して、上記式（１）におけるＡが以下に示す式（２）で表される第２の本発明のポリマーは、ポリエチレングリコール骨格を有さないにもかかわらず、このような第２の本発明のポリマーを含む第２の本発明の組成物は、水溶け及び洗浄後のしっとりさに優れている。
　（Ｒ４は、炭素数１又は２のアルキル基） Generally, a compound having a polyethylene glycol skeleton is used to improve the water solubility of a cleansing composition. In contrast, the polymer of the second invention of the present invention, in which A in the above formula (1) is represented by the following formula (2), does not have a polyethylene glycol skeleton, but the composition of the second invention containing such a polymer of the second invention is excellent in water solubility and moisturizing effect after washing.
( R4 is an alkyl group having 1 or 2 carbon atoms)
　上記式（２）で表される部分の原料となるプロピレングリコール及びブチレングリコールは、ポリエチレングリコール骨格の原料となるエチレングリコールと比較して、天然由来の材料を入手しやすく、したがって、ポリエチレングリコール骨格を有さない第２の本発明のポリマーで組成物の水溶け及び洗浄後のしっとりさを改善できることは好ましい。 Propylene glycol and butylene glycol, which are the raw materials for the portion represented by formula (2) above, are more readily available as naturally occurring materials than ethylene glycol, which is the raw material for the polyethylene glycol skeleton. Therefore, it is preferable that the second polymer of the present invention, which does not have a polyethylene glycol skeleton, can improve the water solubility of the composition and the moisturizing effect after washing.
　〈水〉
　第２の本発明の組成物は、水を含む。 <water>
The composition of the second invention contains water.
　水としては、特に限定されるものではないが、化粧品、医薬部外品等に使用される水を使用することができ、例えば、精製水、イオン交換水、水道水等を使用することができる。 The water used is not particularly limited, but may be the same as that used in cosmetics, quasi-drugs, etc., such as purified water, ion-exchanged water, tap water, etc.
　第２の本発明の組成物において、水の含有量は、特に限定されず、例えば、水以外の成分の含有量に応じて適宜調節することができる。より具体的には、水の含有量は、例えば、組成物全体に対して、５．０質量％以上、１０質量％以上、１５質量％以上、２０質量％以上、２５質量％以上、又は３０質量％以上であってよく、また、８０質量％以下、７０質量％以下、６０質量％以下、５０質量％以下、４０質量％以下、又は３５質量％以下であってよい。 In the second composition of the present invention, the water content is not particularly limited and can be adjusted as appropriate depending on, for example, the content of components other than water. More specifically, the water content may be, for example, 5.0% by mass or more, 10% by mass or more, 15% by mass or more, 20% by mass or more, 25% by mass or more, or 30% by mass or more relative to the entire composition, and may be 80% by mass or less, 70% by mass or less, 60% by mass or less, 50% by mass or less, 40% by mass or less, or 35% by mass or less.
　〈高級脂肪酸〉
　第２の本発明の組成物は、高級脂肪酸及び／又はその塩を含む。すなわち、第２の本発明の組成物は、高級脂肪酸を含んでもよく、高級脂肪酸塩を含んでもよく、又は高級脂肪酸と高級脂肪酸塩との混合物を含んでよい。 <Higher fatty acids>
The composition of the second invention contains a higher fatty acid and/or a salt thereof. That is, the composition of the second invention may contain a higher fatty acid, may contain a higher fatty acid salt, or may contain a mixture of a higher fatty acid and a higher fatty acid salt.
　高級脂肪酸とは、炭素数が６以上の鎖状モノカルボン酸を指す。第２の本発明において、高級脂肪酸としては、飽和、不飽和もしくは直鎖、分岐いずれの脂肪酸も用いることができるが、炭素数１２～１８の脂肪酸であることが好ましい。より具体的には、第２の本発明の組成物に含まれ得る高級脂肪酸は、例えば、ラウリン酸、ミリスチン酸、パルミチン酸、ステアリン酸、パルミトレイン酸、オレイン酸、イソミリスチン酸、イソパルミチン酸、イソステアリン酸の１種又は２種以上の組み合わせを含んでよい。これらの中でも、洗浄効果を向上させる観点から、ラウリン酸、ミリスチン酸、パルミチン酸、及びステアリン酸の２種以上を組み合わせて用いることが好ましく、これら４種を組み合わせて用いることがより好ましい。 Higher fatty acids refer to chain monocarboxylic acids having 6 or more carbon atoms. In the second invention, any of saturated, unsaturated, straight-chain, and branched fatty acids can be used as higher fatty acids, but fatty acids having 12 to 18 carbon atoms are preferred. More specifically, higher fatty acids that can be included in the composition of the second invention may include, for example, one or a combination of two or more of lauric acid, myristic acid, palmitic acid, stearic acid, palmitoleic acid, oleic acid, isomyristic acid, isopalmitic acid, and isostearic acid. Among these, from the viewpoint of improving the cleaning effect, it is preferable to use a combination of two or more of lauric acid, myristic acid, palmitic acid, and stearic acid, and it is more preferable to use a combination of these four acids.
　第２の本発明において、高級脂肪酸塩は、脂肪酸石鹸を構成する目的で配合しているので、高級脂肪酸塩の種類は特に限定されない。より具体的には、高級脂肪酸の塩としては、例えば、ナトリウム塩又はカリウム塩等の金属塩、アンモニウム塩、モノエタノールアミン塩、ジエタノールアミン塩、トリエタノールアミン塩、２－アミノ－２－メチルプロパノール、２－アミノ－２－メチルプロパンジオール等のアルカノールアミン、リジン、アルギニン等の塩基性アミノ酸塩であってよい。これらのうち、起泡性を向上させる観点からは、カリウム塩が好ましい。 In the second invention, the higher fatty acid salt is blended for the purpose of forming a fatty acid soap, so the type of higher fatty acid salt is not particularly limited. More specifically, the salt of a higher fatty acid may be, for example, a metal salt such as a sodium salt or a potassium salt, an ammonium salt, an alkanolamine such as a monoethanolamine salt, a diethanolamine salt, a triethanolamine salt, 2-amino-2-methylpropanol, 2-amino-2-methylpropanediol, or a basic amino acid salt such as lysine or arginine. Of these, the potassium salt is preferred from the viewpoint of improving foaming properties.
　なお、第２の本発明において、高級脂肪酸塩は、例えば組成物を調製する際に、高級脂肪酸を中和剤で中和することによって得ることができる。一般的には、完全に中和されるのではなく、生成物は未反応の高級脂肪酸も含んでいる。第２の本発明において、高級脂肪酸の中和率は特に限定されないが、好ましくは６０～９０モル％であり、より好ましくは７０～８５モル％である。したがって、第２の本発明による洗浄料において、好ましくは６０～９０モル％、より好ましくは７０～８５モル％の高級脂肪酸塩と、好ましくは１０～４０モル％、より好ましくは１５～３０モル％の高級脂肪酸とが含まれる。中和剤の含有量は特に限定されず、上記の中和率となるように、適宜、調節することができる。 In the second invention, the higher fatty acid salt can be obtained, for example, by neutralizing the higher fatty acid with a neutralizing agent when preparing the composition. Generally, it is not completely neutralized, and the product also contains unreacted higher fatty acid. In the second invention, the neutralization rate of the higher fatty acid is not particularly limited, but is preferably 60 to 90 mol%, more preferably 70 to 85 mol%. Therefore, the cleansing agent according to the second invention contains preferably 60 to 90 mol%, more preferably 70 to 85 mol% of the higher fatty acid salt and preferably 10 to 40 mol%, more preferably 15 to 30 mol% of the higher fatty acid. The content of the neutralizing agent is not particularly limited, and can be appropriately adjusted to achieve the above neutralization rate.
　また、高級脂肪酸を中和するために中和剤としては、特に限定されず、高級脂肪酸石鹸の材料として一般的に用いられている中和剤であれば特に限定されない。より具体的には、中和剤としては、例えば、水酸化カリウム、水酸化ナトリウム等のアルカリ金属塩の水酸化物、水酸化マグネシウム、水酸化カルシウム等のアルカリ土類金属の水酸化物、２－アミノ－２－メチル－１－プロパノール、モノエタノールアミン、ジエタノールアミン、トリエタノールアミン等のアルカノールアミン、Ｌ－アルギニン、リジン、オルニチン等の塩基性アミノ酸、アンモニア水、水酸化アンモニウム、炭酸水素ナトリウム等が挙げられる。これらの中でも、水への溶解性、洗浄効果を良好にする観点から、水酸化ナトリウム、水酸化カリウム、水酸化カルシウム、水酸化マグネシウム、水酸化アルミニウム、アンモニア水、モノエタノールアミン、ジエタノールアミン及びトリエタノールアミンから選択される１種又は２種以上が好ましく、水酸化ナトリウム、水酸化カリウム、アンモニア水、モノエタノールアミン、ジエタノールアミン及びトリエタノールアミンから選択される１種又は２種以上がより好ましく、水酸化ナトリウム及び水酸化カリウムから選択される１種又は２種が好ましい。 The neutralizing agent used to neutralize the higher fatty acid is not particularly limited, and may be any neutralizing agent that is generally used as a material for higher fatty acid soap. More specifically, examples of neutralizing agents include hydroxides of alkali metal salts such as potassium hydroxide and sodium hydroxide, hydroxides of alkaline earth metals such as magnesium hydroxide and calcium hydroxide, alkanolamines such as 2-amino-2-methyl-1-propanol, monoethanolamine, diethanolamine, and triethanolamine, basic amino acids such as L-arginine, lysine, and ornithine, ammonia water, ammonium hydroxide, and sodium bicarbonate. Among these, from the viewpoint of improving solubility in water and cleaning effect, one or more selected from sodium hydroxide, potassium hydroxide, calcium hydroxide, magnesium hydroxide, aluminum hydroxide, ammonia water, monoethanolamine, diethanolamine, and triethanolamine are preferred, one or more selected from sodium hydroxide, potassium hydroxide, ammonia water, monoethanolamine, diethanolamine, and triethanolamine are more preferred, and one or two selected from sodium hydroxide and potassium hydroxide are preferred.
　第２の本発明の組成物において、高級脂肪酸及び／又はその塩の含有量は、特に限定されず、例えば、組成物全体に対して、５．０質量％以上、１０質量％以上、１５質量％以上、２０質量％以上、又は２５質量％以上であってよく、また、６０質量％以下、５５質量％以下、５０質量％以下、４５質量％以下、４０質量％以下、３５質量％以下、又は３０質量％以下であってよい。なお、第２の本発明において、「高級脂肪酸及び／又はその塩の含有量」とは、高級脂肪酸が単独で含まれる場合には、「高級脂肪酸の含有量」、高級脂肪酸塩が単独で含まれる場合には「高級脂肪酸塩の含有量」、高級脂肪酸と高級脂肪酸塩との両方が含まれる場合には、「高級脂肪酸及び高級脂肪酸塩の含有量の合計」を意味する。なお、高級脂肪酸塩として、高級脂肪酸塩の脂肪酸部分の基となる脂肪酸と中和剤を別個に添加して組成物を調製する場合には、当量で反応させた場合には得られた高級脂肪酸塩の量を「高級脂肪酸及び／又はその塩の含有量」として計算し、高級脂肪酸塩の脂肪酸部分の基となる高級脂肪酸の残量がある場合には、その残量と得られた高級脂肪酸塩の量との合計を「高級脂肪酸及び／又はその塩の含有量」として計算する。 In the composition of the second invention, the content of higher fatty acid and/or its salt is not particularly limited, and may be, for example, 5.0 mass% or more, 10 mass% or more, 15 mass% or more, 20 mass% or more, or 25 mass% or more, and may be 60 mass% or less, 55 mass% or less, 50 mass% or less, 45 mass% or less, 40 mass% or less, 35 mass% or less, or 30 mass% or less, relative to the entire composition. In addition, in the second invention, "content of higher fatty acid and/or salt thereof" means "content of higher fatty acid" when higher fatty acid is contained alone, "content of higher fatty acid salt" when higher fatty acid salt is contained alone, and "total content of higher fatty acid and higher fatty acid salt" when both higher fatty acid and higher fatty acid salt are contained. In addition, when preparing a composition by separately adding a fatty acid that is the basis of the fatty acid portion of the higher fatty acid salt and a neutralizing agent as the higher fatty acid salt, the amount of the higher fatty acid salt obtained when reacted in equivalent amounts is calculated as the "content of higher fatty acid and/or its salt." If there is a residual amount of higher fatty acid that is the basis of the fatty acid portion of the higher fatty acid salt, the sum of that residual amount and the amount of the obtained higher fatty acid salt is calculated as the "content of higher fatty acid and/or its salt."
　〈第２の本発明のポリマー〉
　第２の本発明のポリマーは、「第１の本発明のポリマー」と同様であるため、ここでは詳細な説明を省略する。 <Polymer of the Second Invention>
The second inventive polymer is similar to the "first inventive polymer," and therefore a detailed description thereof will be omitted here.
　第２の本発明の組成物において、第２の本発明のポリマーの含有量は、特に限定されず、例えば、０．００１質量％以上、０．００５質量％以上、０．０１質量％以上、０．０５質量％以上、０．１質量％以上、０．５質量％以上、１．０質量％以上、２．０質量％以上、３．０質量％以上、又は４．０質量％以上であってよく、また、１０．０質量％以下、９．０質量％以下、８．０質量％以下、７．０質量％以下、６．０質量％以下、５．０質量％以下、４．０質量％以下、３．０質量％以下、２．０質量％以下、又は１．０質量％以下であってよい。 In the composition of the second invention, the content of the polymer of the second invention is not particularly limited, and may be, for example, 0.001 mass% or more, 0.005 mass% or more, 0.01 mass% or more, 0.05 mass% or more, 0.1 mass% or more, 0.5 mass% or more, 1.0 mass% or more, 2.0 mass% or more, 3.0 mass% or more, or 4.0 mass% or more, and may be 10.0 mass% or less, 9.0 mass% or less, 8.0 mass% or less, 7.0 mass% or less, 6.0 mass% or less, 5.0 mass% or less, 4.0 mass% or less, 3.0 mass% or less, 2.0 mass% or less, or 1.0 mass% or less.
　〈その他の成分〉
　第２の本発明の組成物は、本発明の効果を損なわない限り、その他の成分を更に含んでよい。以下では、その他の成分について、例示的に説明するが、第２の本発明はこれらに限定されることはない。 <Other Ingredients>
The composition of the second invention may further contain other components as long as the effects of the invention are not impaired. Other components will be described below as examples, but the second invention is not limited thereto.
　なお、上述したように、一般的に、洗浄料組成物の水溶けを改良するためにはポリエチレングリコール骨格を有する化合物が用いられる。これに対して、上記式（１）におけるＡが上記式（２）で表される第２の本発明のポリマーは、ポリエチレングリコール骨格を有さないにもかかわらず、このような本発明のポリマーを含む第２の本発明の組成物は、水溶け及び洗浄後のしっとりさに優れている。第２の本発明の組成物は、ポリエチレングリコール骨格を有する成分を実質的に含まないか、又は含む場合にはその含有量が、０．０１質量％以下、０．００５質量％以下、又は０．００１質量％以下であってよい。 As mentioned above, a compound having a polyethylene glycol skeleton is generally used to improve the water solubility of a cleansing composition. In contrast, the second polymer of the present invention, in which A in formula (1) is represented by formula (2), does not have a polyethylene glycol skeleton, but the composition of the second invention containing such a polymer of the present invention is excellent in water solubility and moisturizing effect after washing. The composition of the second invention does not substantially contain a component having a polyethylene glycol skeleton, or if it does contain such a component, the content of the component may be 0.01% by mass or less, 0.005% by mass or less, or 0.001% by mass or less.
　（多価アルコール）
　第２の本発明の組成物は、少なくとも１種の多価アルコールを更に含むことが好ましい。多価アルコールは、洗浄後のしっとりさを付与することができるからである。したがって、多価アルコールは、場合によって（種類によって）は保湿剤とも称することができる。 (Polyhydric alcohol)
The composition of the second invention preferably further contains at least one polyhydric alcohol. This is because the polyhydric alcohol can impart moisturizing properties after washing. Therefore, the polyhydric alcohol can also be called a moisturizing agent in some cases (depending on the type).
　多価アルコールとは、分子中に水酸基を２個以上もつアルコールである。第２の本発明において、多価アルコールとして、特に限定されず、例えば、１，２－プロパンジオール、１，３－プロパンジオール、１，２－ブタンジオール、１，３－ブタンジオール、１，４－ブタンジオール、ジプロピレングリコール、グリセリン、ジグリセリン、ソルビタン、ソルビトール、マルチトール、グルコース及びスクロース等が挙げられる。これらのうち、第２の本発明の効果をより向上させる観点から、多価アルコールは、ジプロピレングリコール、グリセリン、及びソルビトールからなる群より選択される少なくとも１つを含むことが好ましい。 A polyhydric alcohol is an alcohol having two or more hydroxyl groups in the molecule. In the second invention, the polyhydric alcohol is not particularly limited, and examples thereof include 1,2-propanediol, 1,3-propanediol, 1,2-butanediol, 1,3-butanediol, 1,4-butanediol, dipropylene glycol, glycerin, diglycerin, sorbitan, sorbitol, maltitol, glucose, and sucrose. Of these, from the viewpoint of further improving the effects of the second invention, it is preferable that the polyhydric alcohol includes at least one selected from the group consisting of dipropylene glycol, glycerin, and sorbitol.
　第２の本発明の組成物において、多価アルコールを含む場合のその含有量（２種類以上の多価アルコールの場合はその合計含有量）は、特に限定されず、例えば、組成物全体に対して、１．０質量％以上、２．０質量％以上、３．０質量％以上、４．０質量％以上、５．０質量％以上、６．０質量％以上、７．０質量％以上、８．０質量％以上、９．０質量％以上、１０質量％以上、１１質量％以上、１２質量％以上、１３質量％以上、１４質量％以上、１５質量％以上、１６質量％以上、１７質量％以上、１８質量％以上、１９質量％以上、２０質量％以上、２１質量％以上、２２質量％以上、２３質量％以上、２４質量％以上、２５質量％以上、又は３０質量％以上であってよく、また、６０質量％以下、５５質量％以下、５０質量％以下、４５質量％以下、４０質量％以下、３５質量％以下、３０質量％以下、又は２５質量％以下であってよい。 In the second composition of the present invention, when a polyhydric alcohol is contained, its content (the total content in the case of two or more types of polyhydric alcohol) is not particularly limited, and may be, for example, 1.0 mass% or more, 2.0 mass% or more, 3.0 mass% or more, 4.0 mass% or more, 5.0 mass% or more, 6.0 mass% or more, 7.0 mass% or more, 8.0 mass% or more, 9.0 mass% or more, 10 mass% or more, 11 mass% or more, 12 mass% or more, 13 mass% or more, or more than 15 mass%. % or more, 14% or more, 15% or more, 16% or more, 17% or more, 18% or more, 19% or more, 20% or more, 21% or more, 22% or more, 23% or more, 24% or more, 25% or more, or 30% or more by mass, and may be 60% or less, 55% or less, 50% or less, 45% or less, 40% or less, 35% or less, 30% or less, or 25% or less by mass.
　また、第２の本発明の組成物において、多価アルコールを含む場合には、多価アルコールの合計含有量と、上述した第２の本発明のポリマーの含有量との比（多価アルコール：本発明のポリマー）は、特に限定されず、例えば、５：１～８０：１であってよく、より具体的には、５：１以上、６：１以上、７：１以上、８：１以上、９：１以上、１０：１以上、１５：１以上、又は２０：１以上であってよく、また、８０：１以下、７５：１以下、７０：１以下、６５：１以下、６０：１以下、５５：１以下、５０：１以下、４５：１以下、４０：１以下、３５：１以下、３０：１以下、２５：１以下、又は２０：１以下であってよい。 In the second composition of the present invention, when a polyhydric alcohol is contained, the ratio of the total content of the polyhydric alcohol to the content of the polymer of the second invention (polyhydric alcohol:polymer of the present invention) is not particularly limited, and may be, for example, 5:1 to 80:1, and more specifically, may be 5:1 or more, 6:1 or more, 7:1 or more, 8:1 or more, 9:1 or more, 10:1 or more, 15:1 or more, or 20:1 or more, and may be 80:1 or less, 75:1 or less, 70:1 or less, 65:1 or less, 60:1 or less, 55:1 or less, 50:1 or less, 45:1 or less, 40:1 or less, 35:1 or less, 30:1 or less, 25:1 or less, or 20:1 or less.
　（界面活性剤）
　第２の本発明の組成物は、界面活性剤を更に含むことが好ましい。界面活性剤としては、特に限定されないが、例えば、泡質や泡もちを向上させる観点からは、ノニオン界面活性剤を用いることが好ましく、また、起泡性を向上させる観点からは、両性界面活性剤を用いることが好ましい。このため、第２の本発明の組成物は、ノニオン界面活性剤及び両性界面活性剤を併用することが好ましい。 (Surfactant)
The composition of the second invention preferably further comprises a surfactant.The surfactant is not particularly limited, but for example, from the viewpoint of improving foam quality and foam retention, it is preferable to use a nonionic surfactant, and from the viewpoint of improving foamability, it is preferable to use an amphoteric surfactant.Therefore, the composition of the second invention preferably uses a nonionic surfactant and an amphoteric surfactant in combination.
　ノニオン界面活性剤としては、特に限定されず、例えば、ポリオキシエチレンラウリルエーテル、ポリオキシエチレンセチルエーテル、ポリオキシエチレンステアリルエーテル等のポリオキシエチレンアルキルエーテル；ポリオキシエチレンポリオキシプロピレンラウリルエーテル、ポリオキシエチレンポリオキシプロピレンセチルエーテル、ポリオキシエチレンポリオキシプロピレンステアリルエーテル、ポリオキシエチレンポリオキシプロピレンデシルテトラデシルエーテル等のポリオキシエチレンポリオキシプロピレンアルキルエーテル；ポリオキシエチレンオクチルフェニルエーテル、ポリオキシエチレンノニルフェニルエーテル等のポリオキシエチレンアルキルフェニルエーテル；モノラウリン酸ソルビタン、モノステアリン酸ソルビタン、モノオレイン酸ソルビタン等のソルビタン脂肪酸エステル；モノラウリン酸ポリオキシエチレンソルビタン、モノステアリン酸ポリオキシエチレンソルビタン、トリオレイン酸ポリオキシエチレンソルビタン等のポリオキシエチレンソルビタン脂肪酸エステル；ラウリン酸グリセリル、ミリスチン酸グリセリル、ステアリン酸グリセリル、イソステアリン酸グリセリル、ベヘン酸グリセリル等のグリセリン脂肪酸エステル；モノステアリン酸ポリオキシエチレングリセリル、モノオレイン酸ポリオキシエチレングリセリル、トリイソステアリン酸ポリオキシエチレングリセリル、ポリオキシエチレン（カプリル／カプリン酸）グリセリル、イソステアリン酸ポリオキシエチレングリセリル等のポリオキシエチレン脂肪酸グリセリル；モノステアリン酸ジグリセリル、モノオレイン酸デカグリセリル、カプリル酸ポリグリセリル、ラウリン酸ポリグリセリル等のポリグリセリン脂肪酸エステル；モノラウリン酸ポリエチレングリコール、モノステアリン酸ポリエチレングリコール等のポリオキシエチレン脂肪酸エステル；ポリオキシエチレンヒマシ油；硬化ヒマシ油；ポリオキシエチレン硬化ヒマシ油；ポリオキシエチレンラノリン；ポリオキシエチレン還元ラノリン等が挙げられる。 Nonionic surfactants are not particularly limited, and examples thereof include polyoxyethylene alkyl ethers such as polyoxyethylene lauryl ether, polyoxyethylene cetyl ether, and polyoxyethylene stearyl ether; polyoxyethylene polyoxypropylene lauryl ether, polyoxyethylene polyoxypropylene cetyl ether, polyoxyethylene polyoxypropylene stearyl ether, and polyoxyethylene polyoxypropylene decyl tetradecyl ether; polyoxyethylene alkyl phenyl ethers such as polyoxyethylene octyl phenyl ether and polyoxyethylene nonyl phenyl ether; sorbitan fatty acid esters such as sorbitan monolaurate, sorbitan monostearate, and sorbitan monooleate; polyoxyethylene sorbitan monolaurate, polyoxyethylene sorbitan monostearate, and polyoxyethylene sorbitan trioleate; Examples of the fatty acid esters include polyoxyethylene sorbitan fatty acid esters; glyceryl laurate, glyceryl myristate, glyceryl stearate, glyceryl isostearate, and glyceryl behenate; polyoxyethylene glyceryl fatty acid esters such as polyoxyethylene glyceryl monostearate, polyoxyethylene glyceryl monooleate, polyoxyethylene glyceryl triisostearate, polyoxyethylene (caprylic/capric acid) glyceryl, and polyoxyethylene glyceryl isostearate; polyglyceryl fatty acid esters such as diglyceryl monostearate, decaglyceryl monooleate, polyglyceryl caprylate, and polyglyceryl laurate; polyoxyethylene fatty acid esters such as polyethylene glycol monolaurate and polyethylene glycol monostearate; polyoxyethylene castor oil; hydrogenated castor oil; polyoxyethylene hydrogenated castor oil; polyoxyethylene lanolin; and polyoxyethylene reduced lanolin.
　第２の本発明の組成物において、ノニオン界面活性剤を含む場合のその含有量は、特に限定されず、例えば、組成物全体に対して、０．１質量％以上、０．５質量％以上、１．０質量％以上、１．５質量％以上、２．０質量％以上、２．５質量％以上、３．０質量％以上、３．５質量％以上、又は４．０質量％以上であってよく、また、１０質量％以下、９．０質量％以下、８．０質量％以下、７．０質量％以下、６．０質量％以下、５．０質量％以下、４．０質量％以下、３．０質量％以下、又は２．０質量％以下であってよい。 In the second composition of the present invention, when a nonionic surfactant is contained, its content is not particularly limited, and may be, for example, 0.1 mass% or more, 0.5 mass% or more, 1.0 mass% or more, 1.5 mass% or more, 2.0 mass% or more, 2.5 mass% or more, 3.0 mass% or more, 3.5 mass% or more, or 4.0 mass% or more, and may be 10 mass% or less, 9.0 mass% or less, 8.0 mass% or less, 7.0 mass% or less, 6.0 mass% or less, 5.0 mass% or less, 4.0 mass% or less, 3.0 mass% or less, or 2.0 mass% or less, relative to the entire composition.
　両性界面活性剤としては、特に限定されず、例えば、グリシン型両性界面活性剤、アミノプロピオン酸型両性界面活性剤、アミドプロピルベタイン型両性界面活性剤、アミノ酢酸ベタイン型両性界面活性剤及びスルホベタイン型両性界面活性剤等が挙げられる。より具体的には、両性界面活性剤として、例えば、塩酸アルキルジアミノエチルグリシン、ラウリルジアミノエチルグリシンナトリウム、ラウリルベタイン、２－アルキル－Ｎ－カルボキシメチル－Ｎ－ヒドロキシエチルイミダゾリウムベタイン（「ココアンホ酢酸ナトリウム」とも称する）、ラウリルアミノプロピオン酸ナトリウム、ラウリルアミノプロピオン酸トリエタノールアミン、ラウリルアミノジプロピオン酸ナトリウム、ヤシ油脂肪酸アシル－Ｎ－カルボキシエチル－Ｎ－ヒドロキシエチルエチレンジアミンナトリウム、ヤシ油脂肪酸アシル－Ｎ－カルボキシエトキシエチル－Ｎ－カルボキシエチルエチレンジアミン二ナトリウム、ヤシ油脂肪酸アミドプロピルベタイン、パーム油脂肪酸アミドプロピルベタイン、ラウリン酸アミドプロピルベタイン、リシノレイン酸アミドプロピルベタイン、ラウリルジメチルアミノ酢酸ベタイン、ヤシ油アルキルジメチルアミノ酢酸ベタイン、ステアリルジメチルアミノ酢酸ベタイン、ステアリルジヒドロキシエチルベタイン、ラウリン酸アミドプロピル酢酸ベタイン、ラウリルヒドロキシスルホベタイン、ラウリン酸アミドプロピルヒドロキシスルホベタイン、ミリスチン酸アミドプロピルヒドロキシスルホベタイン、ヤシ油脂肪酸アミドプロピルヒドロキシスルホベタイン等が挙げられる。 The amphoteric surfactant is not particularly limited, and examples thereof include glycine type amphoteric surfactants, aminopropionic acid type amphoteric surfactants, amidopropyl betaine type amphoteric surfactants, aminoacetic acid betaine type amphoteric surfactants, and sulfobetaine type amphoteric surfactants. More specifically, examples of amphoteric surfactants include alkyl diaminoethyl glycine hydrochloride, sodium lauryl diaminoethyl glycine, lauryl betaine, 2-alkyl-N-carboxymethyl-N-hydroxyethyl imidazolium betaine (also called "sodium cocoamphoacetate"), sodium lauryl aminopropionate, triethanolamine lauryl aminopropionate, sodium lauryl aminodipropionate, coconut oil fatty acid acyl-N-carboxyethyl-N-hydroxyethyl ethylenediamine sodium, coconut oil fatty acid acyl-N-carboxyethoxyethyl-N-carboxyethyl ethylenediamine sodium, and the like. Examples of such compounds include disodium amine, coconut oil fatty acid amidopropyl betaine, palm oil fatty acid amidopropyl betaine, lauric acid amidopropyl betaine, ricinoleic acid amidopropyl betaine, lauryl dimethylaminoacetic acid betaine, coconut oil alkyl dimethylaminoacetic acid betaine, stearyl dimethylaminoacetic acid betaine, stearyl dihydroxyethyl betaine, lauric acid amidopropyl acetate betaine, lauryl hydroxysulfobetaine, lauric acid amidopropyl hydroxysulfobetaine, myristic acid amidopropyl hydroxysulfobetaine, and coconut oil fatty acid amidopropyl hydroxysulfobetaine.
　第２の本発明の組成物において、両性界面活性剤を含む場合のその含有量は、特に限定されず、例えば、組成物全体に対して、０．１質量％以上、０．５質量％以上、１．０質量％以上、１．５質量％以上、２．０質量％以上、２．５質量％以上、３．０質量％以上、３．５質量％以上、又は４．０質量％以上であってよく、また、１０質量％以下、９．０質量％以下、８．０質量％以下、７．０質量％以下、６．０質量％以下、５．０質量％以下、４．０質量％以下、３．０質量％以下、又は２．０質量％以下であってよい。 In the second composition of the present invention, when an amphoteric surfactant is contained, its content is not particularly limited, and may be, for example, 0.1 mass% or more, 0.5 mass% or more, 1.0 mass% or more, 1.5 mass% or more, 2.0 mass% or more, 2.5 mass% or more, 3.0 mass% or more, 3.5 mass% or more, or 4.0 mass% or more, and may be 10 mass% or less, 9.0 mass% or less, 8.0 mass% or less, 7.0 mass% or less, 6.0 mass% or less, 5.0 mass% or less, 4.0 mass% or less, 3.0 mass% or less, or 2.0 mass% or less, relative to the entire composition.
　第２の本発明の組成物は、上述したその他の成分以外には、通常皮膚洗浄料に添加し得る成分を、第２の本発明の効果を損なわない範囲において、任意に添加することができる。かかる成分として、緩衝剤（例えば、クエン酸、クエン酸ナトリウム等）、キレート剤（例えば、ＥＤＴＡ等）、色素、香料等が挙げられるが、これら例示に限定されるものでない。 In addition to the other components described above, the composition of the second invention may contain any components that can be added to skin cleansers in general, as long as they do not impair the effects of the second invention. Such components include, but are not limited to, buffers (e.g., citric acid, sodium citrate, etc.), chelating agents (e.g., EDTA, etc.), colorants, fragrances, etc.
　《第２の本発明の組成物の製造方法》
　第２の本発明の組成物の製造方法は、特に限定されず、例えば、上述した必須成分と、随意に添加するその他の成分とを混合することによって行うことができる。また、混合する際に、必要に応じて、例えば、加熱や攪拌等の手段を用いてもよい。 <<Production method of the composition of the second invention>>
The method for producing the composition of the second invention is not particularly limited, and can be carried out, for example, by mixing the above-mentioned essential components with other components that are added optionally. Furthermore, when mixing, means such as heating or stirring may be used as necessary.
　《第２の本発明の組成物の用途》
　第２の本発明の組成物は、例えば、皮膚用洗浄料、皮膚保湿用洗浄料として好適に用いることができる。第２の本発明の組成物は、特に、洗顔料として好適に用いることができる。また、第２の本発明の組成物は、起泡性に優れているため、例えば洗顔フォームと呼ばれてもよい。 <<Use of the composition of the second invention>>
The composition of the second invention can be suitably used, for example, as a skin cleanser or a skin moisturizing cleanser. The composition of the second invention can be suitably used, in particular, as a face wash. In addition, the composition of the second invention has excellent foaming properties, and therefore may be called, for example, a face wash foam.
　また、第２の本発明の組成物の製品形態は、特に限定されず、例えばペースト状、フォーム状、乳液状、又はジェル状であってよい。ここで、「ペースト状」とは、室温（２５℃）においてペースト状（糊状）を呈することを意味する。 The product form of the second composition of the present invention is not particularly limited, and may be, for example, a paste, foam, emulsion, or gel. Here, "paste" means that the composition is in a paste (glue) state at room temperature (25°C).
　以下に実施例を挙げて、第１及び第２の本発明について更に詳しく説明を行うが、本発明はこれらに限定されるものではない。 The first and second aspects of the present invention will be described in more detail below with reference to examples, but the present invention is not limited to these.
　［第１の本発明］
　《合成例１及び２》
　以下の合成例１及び２は、それぞれ下記式（３）で表される構造を有するポリマーを合成した：
　なお、式（３）において、［］内は、ランダム共重合体である。 [First aspect of the present invention]
Synthesis Examples 1 and 2
In the following Synthesis Examples 1 and 2, polymers having structures represented by the following formula (3) were each synthesized:
In addition, in formula (3), the brackets [ ] represent a random copolymer.
　〈合成例１〉
　合成例１：Ｒ１＝Ｈ、Ｒ２＝Ｈ、Ｒ３＝ＣＨ３、Ｒ４＝ＣＨ３、ｍ＝２．０、及びｎ＝６．０のポリマー１
　下記方法で合成を行い、ポリマー１を得た。 Synthesis Example 1
Synthesis Example 1: Polymer 1 with R 1 =H, R 2 =H, R 3 =CH 3 , R 4 =CH 3 , m=2.0, and n=6.0
Polymer 1 was obtained by the following synthesis method.
　メタノール１２８ｇ及び触媒として水酸化カリウム６．４ｇをオートクレーブ中に仕込み、オートクレーブ中の空気を乾燥窒素で置換した後、攪拌しながら８０℃で触媒を完全に溶解した。次に滴下装置によりグリシドール５９２ｇとプロピレンオキシド１３９２ｇの混合物を９５℃にて２０時間かけて滴下させ、その後５時間攪拌した。オートクレーブより反応組成物を取り出し、塩酸で中和してｐＨ６～７とし、含有する水分を除去するため減圧－０．０９５ＭＰａ（５０ｍｍＨｇ）、１００℃で１時間処理した。更に処理後生成した塩を除去するため濾過を行い、合成例１のポリマー１、２０００ｇを得た。 128 g of methanol and 6.4 g of potassium hydroxide as a catalyst were charged into an autoclave, the air in the autoclave was replaced with dry nitrogen, and the catalyst was completely dissolved at 80°C while stirring. Next, a mixture of 592 g of glycidol and 1,392 g of propylene oxide was added dropwise over 20 hours at 95°C using a dropping device, and then stirred for 5 hours. The reaction composition was removed from the autoclave, neutralized with hydrochloric acid to a pH of 6-7, and treated at 100°C for 1 hour under a reduced pressure of -0.095 MPa (50 mmHg) to remove the contained moisture. After further treatment, filtration was performed to remove the salt produced, and 2,000 g of polymer 1 of Synthesis Example 1 was obtained.
　以下では、得られたポリマー１に対して、各種の物性値を求めた。 Below, various physical properties were determined for the obtained polymer 1.
　（数平均分子量）
　得られたポリマー１の数平均分子量は、ゲル浸透クロマトグラフィー（ＧＰＣ）測定により算出した。システムとしてＳＨＯＤＥＸ（登録商標）　ＧＰＣ１０１ＧＰＣ専用システム、示差屈折率計としてＳＨＯＤＥＸ　ＲＩ－７１ｓ、ガードカラムとしてＳＨＯＤＥＸ　ＫＦ－Ｇ、カラムとしてＨＯＤＥＸ　ＫＦ８０４Ｌを３本連続装着し、カラム温度４０℃、展開溶剤としてテトラヒドロフランを１ｍｌ／分の流速で流し、得られた反応物の０.１重量％テトラヒドロフラン溶液０.１ｍｌを注入し、ＢＯＲＷＩＮ　ＧＰＣ計算プログラムを用いて屈折率強度と溶出時間で表されるクロマトグラムを得る。このクロマトグラムからポリエチレングリコールを標準とし、数平均分子量を求めたところ、約５３０であった。 (Number average molecular weight)
The number average molecular weight of the obtained polymer 1 was calculated by gel permeation chromatography (GPC). The system was a SHODEX (registered trademark) GPC101 GPC dedicated system, the differential refractometer was a SHODEX RI-71s, the guard column was a SHODEX KF-G, and three columns were continuously equipped with a HODEX KF804L. The column temperature was 40° C., and tetrahydrofuran was allowed to flow as a developing solvent at a flow rate of 1 ml/min. 0.1 ml of a 0.1 wt % tetrahydrofuran solution of the obtained reaction product was injected, and a chromatogram represented by refractive index intensity and elution time was obtained using a BORWIN GPC calculation program. The number average molecular weight was calculated from this chromatogram using polyethylene glycol as a standard, and was found to be about 530.
　（重量平均分子量）
　得られたポリマー１の重量平均分子量は、上記と同様にＧＰＣ計算によって求めて、約８５９であった。 (Weight average molecular weight)
The weight average molecular weight of the obtained polymer 1 was about 859 as determined by GPC calculation in the same manner as above.
　（多分散度）
　上記で求めた数平均分子量及び重量平均分子量の結果から、ポリマー１の多分散度Ｍｗ／Ｍｎは、１．６２であった。 (Polydispersity)
From the results of the number average molecular weight and weight average molecular weight obtained above, the polydispersity Mw/Mn of Polymer 1 was 1.62.
　（ＩＯＢ値）
　得られたポリマー１のＩＯＢ値は、以下のように求めたところ、１．１であった。 (IOB value)
The IOB value of the obtained polymer 1 was determined as follows and was found to be 1.1.
　より具体的には、ポリマー１において、有機性値として、炭素を２０、ｉｓｏ分岐を－１０にて計算した。また、無機性値は、水酸基を１００、エーテル結合を２０にて計算した。
　・メタノール部位：（炭素数１、水酸基１）×１
　　有機性値：２０
　　無機性値：１００
・グリシドール部位：（炭素数３、ｉｓｏ分岐１、水酸基１、エーテル結合１）×２
　　有機性値：（６０－１０）×２＝１００
　　無機性値：（１００＋２０）×２＝２４０
・プロピレンオキシド部位：（炭素数３、ｉｓｏ分岐１、エーテル結合１）×６
　　有機性値：（６０－１０）×６＝３００
　　無機性値：２０×６＝１２０
　以上、合計有機性値が４２０となる、合計無機性値が４６０となるため、ＩＯＢ値が１．０９となる。 More specifically, in the polymer 1, the organic value was calculated based on 20 for carbon and -10 for iso branching. The inorganic value was calculated based on 100 for hydroxyl group and 20 for ether bond.
Methanol site: (1 carbon, 1 hydroxyl group) x 1
Organic value: 20
Inorganic value: 100
Glycidol moiety: (carbon number 3, isobranch 1, hydroxyl group 1, ether bond 1) x 2
Organic value: (60-10) x 2 = 100
Inorganic value: (100 + 20) x 2 = 240
Propylene oxide moiety: (carbon number 3, isobranch 1, ether bond 1) x 6
Organic value: (60-10) x 6 = 300
Inorganic value: 20 x 6 = 120
As a result, the total organic value is 420 and the total inorganic value is 460, resulting in an IOB value of 1.09.
　（曇点）
　得られたポリマー１に対して、５ｗｔ％水溶液を調製し、８５℃に加温後、冷却し、透明溶液となる温度は７４℃であった。よって、ポリマー１の曇点は、７４℃であることが分かった。 (Cloud point)
A 5 wt % aqueous solution of the obtained polymer 1 was prepared and heated to 85° C., and then cooled to become a transparent solution at 74° C. Therefore, it was found that the cloud point of polymer 1 was 74° C.
　（水酸基価）
　得られたポリマー１の水酸基価は、ＪＩＳ　Ｋ－１５５７－１の測定方法に従い測定したところ、２９４であった。 (Hydroxyl value)
The hydroxyl value of the obtained polymer 1 was 294 as measured according to the method of JIS K-1557-1.
　（水への溶解性）
　得られたポリマー１の水への溶解性は、後述する「相溶性評価」の方法と同じように求めたところ、５０質量％以上であった。 (Solubility in Water)
The solubility of the obtained polymer 1 in water was determined in the same manner as in the "compatibility evaluation" described below, and was found to be 50% by mass or more.
　（オリーブ油への溶解性）
　得られたポリマー１のオリーブ油への溶解性は、以下のように求めた。すなわち、ポリマー１を、濃度が1．０ｗｔ％となるようオリーブ油と混合し、外観を確認した。均一であれば「〇」とした。この場合、ポリマー１のオリーブ油への溶解性は、１．０質量％であった。 (Solubility in olive oil)
The solubility of the obtained polymer 1 in olive oil was determined as follows. That is, polymer 1 was mixed with olive oil so that the concentration was 1.0 wt%, and the appearance was confirmed. If it was uniform, it was marked as "Good". In this case, the solubility of polymer 1 in olive oil was 1.0 mass%.
　以上で測定したポリマー１の各種物性値は、下記の表１に示す。 The various physical properties of Polymer 1 measured above are shown in Table 1 below.
　〈合成例２〉
　合成例２：Ｒ１＝Ｈ及びＣＨ３、Ｒ２＝Ｈ及びＣＨ３、Ｒ３＝ＣＨ３、Ｒ４＝ＣＨ３、ｍ＝２．０、及びｎ＝６．０のポリマー２
　下記方法で合成を行い、ポリマー２を得た。 Synthesis Example 2
Synthesis Example 2: Polymer 2 with R 1 =H and CH 3 , R 2 =H and CH 3 , R 3 =CH 3 , R 4 =CH 3 , m=2.0, and n=6.0
Polymer 2 was obtained by the following synthesis method.
　メタノール１２８ｇと触媒として水酸化カリウム６．４ｇをオートクレーブ中に仕込み、オートクレーブ中の空気を乾燥窒素で置換した後、攪拌しながら８０℃で触媒を完全に溶解した。次に滴下装置によりグリシドール５９２ｇとプロピレンオキシド１３９２ｇの混合物を９５℃にて２０時間かけて滴下させ、その後２時間攪拌した。次に、水酸化カリウム２４４ｇを仕込み、系内を乾燥窒素で置換した後、系内を乾燥窒素で置換した後、塩化メチル２００ｇを温度８０～１３０℃で圧入し５時間反応させた。その後オートクレーブより反応組成物を取り出し、塩酸で中和してｐＨ６～７とし、含有する水分を除去するため減圧－０．０９５ＭＰａ（５０ｍｍＨｇ）、１００℃で１時間処理した。更に処理後生成した塩を除去するため濾過を行い、ポリマー２、１８２０ｇを得た。塩化メチルを反応させる前にサンプリングし、精製したものの水酸基価が１２５であったことから、Ｒ２とＲ３におけるメチル基と水素原子の割合（ＣＨ３／Ｈ）は０．５７であることが分かった。すなわち、ポリマー２の水酸基封鎖率が５７％であった。 128 g of methanol and 6.4 g of potassium hydroxide as a catalyst were charged into an autoclave, and the air in the autoclave was replaced with dry nitrogen, and the catalyst was completely dissolved at 80° C. while stirring. Next, a mixture of 592 g of glycidol and 1392 g of propylene oxide was dropped at 95° C. over 20 hours using a dropping device, and then stirred for 2 hours. Next, 244 g of potassium hydroxide was charged, and the system was replaced with dry nitrogen, and then 200 g of methyl chloride was pressed in at a temperature of 80 to 130° C. and reacted for 5 hours. Thereafter, the reaction composition was taken out of the autoclave, neutralized with hydrochloric acid to a pH of 6 to 7, and treated at a reduced pressure of −0.095 MPa (50 mmHg) and 100° C. for 1 hour to remove the water contained therein. Further, filtration was performed to remove the salt generated after the treatment, and 1820 g of polymer 2 was obtained. A sample was taken before the reaction with methyl chloride and purified, and the hydroxyl value was found to be 125, indicating that the ratio of methyl groups to hydrogen atoms ( CH3 /H) in R2 and R3 was 0.57. In other words, the hydroxyl group blocking rate of polymer 2 was 57%.
　上述したポリマー１の場合と同様に、得られたポリマー２に対して、各種の物性値を求めて、それぞれの結果は下記の表１に示す。 Similar to the case of polymer 1 described above, various physical properties were determined for the obtained polymer 2, and the results are shown in Table 1 below.
　〈相溶性評価〉
　上記で合成したポリマー１及び２を、一定の濃度で水及び各種の油と混合させて、攪拌した後、１日静置した後に目視観察によるそれぞれの相溶性を調べた。その結果は、下記表１－２に示す。なお、表１－２において、「〇」は、「相溶」を表し、「×」は、「不溶」を表す。 <Compatibility evaluation>
The polymers 1 and 2 synthesized above were mixed with water and various oils at a certain concentration, stirred, and then allowed to stand for one day, after which their compatibility was examined by visual observation. The results are shown in Table 1-2 below. In Table 1-2, "◯" indicates "compatible" and "×" indicates "insoluble."
　《実施例１－１～１－６、並びに比較例１－１及び１－２》
　以下の表２に示す処方を用いて、可溶化系の化粧料組成物を調製した。なお、特に断りのない限り、表２中の数値は、配合量を表し、単位は質量％である。 Examples 1-1 to 1-6 and Comparative Examples 1-1 and 1-2
Solubilized cosmetic compositions were prepared using the formulations shown in Table 2. Unless otherwise specified, the values in Table 2 represent blend amounts, and the units are % by mass.
　また、得られた各組成物に対して、比較例１－１の組成物を基準として、専門官能評価パネル５名の顔に塗り、手で一定の力、速さで一定回数メーキャップとなじませ、水又はぬるま湯ですすいだ。以下の評価基準で、「肌なじみ」、「メイク落ち」、及び「べたつき感」を総合的に評価した。それぞれの評価結果は、表２に示す。 Furthermore, for each of the obtained compositions, using the composition of Comparative Example 1-1 as a standard, five members of the expert sensory evaluation panel applied the composition to the face, blended it with the makeup with their hands a certain number of times at a certain pressure and speed, and rinsed it off with water or lukewarm water. They were comprehensively evaluated for "skin compatibility," "makeup removal," and "stickiness" using the following evaluation criteria. The evaluation results for each are shown in Table 2.
　〈肌なじみ〉
　・基準組成物：比較例１－１
　・評価結果：
　　「Ａ」：比較例１－１に比べて明らかな差を感じる（肌なじみが良い）；
　　「Ｂ」：比較例１－１に比較すると差を感じる（肌なじみが良い）；
　　「Ｃ］：比較例１－１と比べてほぼ差を感じない；
　　「Ｄ」：比較例１－１に比較すると差を感じる（肌なじみが悪い）；
　　「Ｅ」：比較例１－１に比べて明らかな差を感じる（肌なじみが悪い）。 <Skin-friendly>
Reference composition: Comparative Example 1-1
·Evaluation results:
"A": A clear difference is felt compared to Comparative Example 1-1 (good skin compatibility);
"B": There is a noticeable difference compared to Comparative Example 1-1 (good compatibility with the skin);
"C]: Almost no difference is felt compared to Comparative Example 1-1;
"D": There is a difference compared to Comparative Example 1-1 (not compatible with the skin);
"E": A clear difference is felt compared to Comparative Example 1-1 (poor skin compatibility).
　〈メイク落ち（すなわち、汚れ落ち）〉
　・基準組成物：比較例１－１
　・評価結果：
　　「Ａ」：比較例１－１に比べて明らかな差を感じる（メイク落ちが良い）；
　　「Ｂ」：比較例１－１に比較すると差を感じる（メイク落ちが良い）；
　　「Ｃ］：比較例１－１と比べてほぼ差を感じない；
　　「Ｄ」：比較例１－１に比較すると差を感じる（メイク落ちが悪い）；
　　「Ｅ」：比較例１－１に比べて明らかな差を感じる（メイク落ちが悪い）。 <Removes makeup (i.e. dirt)>
Reference composition: Comparative Example 1-1
·Evaluation results:
"A": A clear difference is felt compared to Comparative Example 1-1 (good makeup removal);
"B": There is a noticeable difference compared to Comparative Example 1-1 (good makeup removal);
"C]: Almost no difference is felt compared to Comparative Example 1-1;
"D": There is a noticeable difference compared to Comparative Example 1-1 (makeup removal is poor);
"E": A clear difference is felt compared to Comparative Example 1-1 (makeup removal is poor).
　〈べたつき感〉
　・基準組成物：比較例１－１
　・評価結果：
　　「Ａ」：比較例１－１に比べて明らかな差を感じる（べたつかない）；
　　「Ｂ」：比較例１－１に比較すると差を感じる（べたつかない）；
　　「Ｃ］：比較例１－１と比べてほぼ差を感じない；
　　「Ｄ」：比較例１－１に比較すると差を感じる（べたつく）；
　　「Ｅ」：比較例１－１に比べて明らかな差を感じる（べたつく）。 <Sticky feeling>
Reference composition: Comparative Example 1-1
·Evaluation results:
"A": A clear difference is felt compared to Comparative Example 1-1 (not sticky);
"B": There is a difference compared to Comparative Example 1-1 (not sticky);
"C]: Almost no difference is felt compared to Comparative Example 1-1;
"D": There is a difference compared to Comparative Example 1-1 (sticky);
"E": There is a clear difference compared to Comparative Example 1-1 (sticky).
　表２の結果から明らかなように、実施例１－１～１－６の組成物は、いずれも比較例１－１の組成物（基準）に比べて、肌なじみ及びメイク落ちの両方において明らかに改善されたことが分かった。また、実施例１－３及び１－４の組成物は、比較例１－１の組成物（基準）に比べて、よりべたつかないことが分かった。 As is clear from the results in Table 2, the compositions of Examples 1-1 to 1-6 were all found to have clear improvements in both skin compatibility and makeup removal compared to the composition of Comparative Example 1-1 (standard). In addition, the compositions of Examples 1-3 and 1-4 were found to be less sticky compared to the composition of Comparative Example 1-1 (standard).
　比較例１－２では、第１の本発明のポリマーの代わりに「ＰＰＧ－７０グリセリル」と共に、ポリマー「ＣＨ３Ｏ－[（ＥＯ）１４／（ＰＯ）７]－ＣＨ３」を配合して試みた。しかしながら、比較例１－２の組成物は、実施例１～６の組成物と同程度に肌なじみが改善されたが、メイク落ちは、実施例１－１～１－６の組成物に比べて、改善された程度は低いことが分かった。 In Comparative Example 1-2, an attempt was made to incorporate the polymer "CH 3 O-[(EO) 14 /(PO) 7 ]-CH 3 " together with "PPG-70 glyceryl" instead of the first polymer of the present invention. However, although the composition of Comparative Example 1-2 improved skin compatibility to the same extent as the compositions of Examples 1-6, it was found that the improvement in makeup removal was less than that of the compositions of Examples 1-1 to 1-6.
　比較例１－２の結果からは、肌なじみとメイク落ちとの両方を同時に改善することが難しいことも示唆された。これに対して、実施例１－１～１－６の組成物は、いずれも、肌なじみの良さとメイク落ちの良さとの両立ができていることが分かった。 The results of Comparative Example 1-2 also suggest that it is difficult to simultaneously improve both skin compatibility and makeup removal. In contrast, it was found that the compositions of Examples 1-1 to 1-6 all achieved both good skin compatibility and good makeup removal.
　［第２の本発明］ [Second invention]
　《合成例１及び２》
　以下の合成例１及び２は、上述した「第１の本発明」の実験項における「合成例１及び２」と同じように合成した。得られたポリマー１及びポリマー２の各種の物性値は、上述した表１及び表１－２に記載のとおりであった。 Synthesis Examples 1 and 2
The following Synthesis Examples 1 and 2 were synthesized in the same manner as in "Synthesis Examples 1 and 2" in the experimental section of the above-mentioned "First Invention". Various physical property values of the obtained Polymer 1 and Polymer 2 were as shown in the above-mentioned Table 1 and Table 1-2.
　《実施例２－１～２－８、比較例２－１及び２－２、並びに参考例２－１》
　以下の表３に示す処方を用いて、ペースト状の洗浄料組成物を調製した。なお、特に断りのない限り、表３中の数値は、配合量を表し、単位は質量％である。 Examples 2-1 to 2-8, Comparative Examples 2-1 and 2-2, and Reference Example 2-1
Paste-form cleansing compositions were prepared using the formulations shown in Table 3 below. Unless otherwise specified, the values in Table 3 represent blend amounts, and the units are % by mass.
　また、得られた各組成物に対して、比較例２－１の組成物を基準として、専門官能評価パネル５名の顔を洗浄させた際の、使用性（洗浄時の水溶け及び洗浄後のしっとりさ）を総合的に評価した。評価基準は、以下のとおりであり、評価結果を表３に示す。 Furthermore, for each of the obtained compositions, five members of a specialist sensory evaluation panel were asked to wash the faces of the compositions, and the usability (dissolving in water during washing and moisturizing effect after washing) was evaluated comprehensively, using the composition of Comparative Example 2-1 as the standard. The evaluation criteria were as follows, and the evaluation results are shown in Table 3.
　〈洗浄時の水溶け〉
　・基準組成物：比較例２－１
　・評価結果：
　　「Ａ」：比較例２－１に比べて明らかな水溶けが良い；
　　「Ｂ」：比較例２－１に比べてやや水溶けが良い；
　　「Ｃ］：比較例２－１とほぼ同程度；
　　「Ｄ」：比較例２－１に比べてやや水溶けが悪い；
　　「Ｅ」：比較例２－１に比べて明らかに水溶けが悪い。 <Dissolves in water during cleaning>
Reference composition: Comparative Example 2-1
·Evaluation results:
"A": Significantly better water solubility than Comparative Example 2-1;
"B": Slightly more soluble in water than Comparative Example 2-1;
"C]: Approximately the same as Comparative Example 2-1;
"D": Slightly less soluble in water than Comparative Example 2-1;
"E": Water solubility is significantly poorer than that of Comparative Example 2-1.
　なお、水溶けは、１ｇの組成物試料に対して１０ｇの水と混ぜた際の組成物の溶けやすさによって判断した。 The water solubility was determined based on how easily the composition dissolved when 1 g of the composition sample was mixed with 10 g of water.
　〈洗浄後のしっとりさ〉
　・基準組成物：比較例２－１
　・評価結果：
　　「Ａ」：比較例２－１に比べて明らかに肌のしっとり感を感じる；
　　「Ｂ」：比較例２－１に比べてやや肌のしっとり感を感じる；
　　「Ｃ］：比較例２－１とほぼ同程度；
　　「Ｄ」：比較例２－１に比べてやや肌のしっとり感を感じない；
　　「Ｅ」：比較例２－１に比べて明らかに肌のしっとり感を感じない。 <Moisturizing after washing>
Reference composition: Comparative Example 2-1
·Evaluation results:
"A": Skin feels noticeably moisturized compared to Comparative Example 2-1;
"B": Slightly moisturizing feeling on the skin compared to Comparative Example 2-1;
"C]: Approximately the same as Comparative Example 2-1;
"D": The skin feels slightly less moist than in Comparative Example 2-1;
"E": The skin does not feel moisturized, clearly, compared to Comparative Example 2-1.
　表３の結果から明らかなように、実施例２－１～２－８の洗浄料組成物は、いずれも、比較例２－１に比べて、水溶け及び洗浄後のしっとりさの両方において、明らかに向上されていることが分かった。 As is clear from the results in Table 3, the cleansing compositions of Examples 2-1 to 2-8 were all found to have significantly improved water solubility and moisturizing effect after cleansing compared to Comparative Example 2-1.
　一方、比較例２－２の洗浄料組成物では、両性界面活性剤の種類を変えて試みたが、比較例２－１に比べて、水溶け及び洗浄後のしっとりさのいずれの評価においても改善は見られなかった。 On the other hand, in the cleansing composition of Comparative Example 2-2, an attempt was made to change the type of amphoteric surfactant, but no improvement was observed in either the evaluation of water solubility or moisturizing feeling after cleansing compared to Comparative Example 2-1.
　なお、参考例２－１の洗浄料組成物は、比較例２－１に比べて、水溶け及び洗浄後のしっとりさの両方において、明らかに向上されているが、この参考例の洗浄料組成物には、ポリエチレングリコール骨格を有する成分が含有されている。 The cleansing composition of Reference Example 2-1 is clearly improved in both water solubility and moisturizing effect after cleansing compared to Comparative Example 2-1, but this cleansing composition of Reference Example contains a component with a polyethylene glycol skeleton.
　これに対して、実施例２－１～２－８の洗浄料組成物は、いずれも、ポリエチレングリコール等のポリエチレングリコール骨格を有する成分を含んでいなかったにもかかわらず、水溶け及び洗浄後のしっとりさの両方において優れていることが分かった。 In contrast, the cleansing compositions of Examples 2-1 to 2-8 were found to be excellent in both water solubility and moisturizing effect after cleansing, even though none of them contained a component with a polyethylene glycol skeleton, such as polyethylene glycol.

Claims (16)

  1. 　洗浄料組成物であって、
    　水と、保湿剤と、ノニオン界面活性剤と、下記式（１）で表される構造を有するポリマーと、を含み、
    　前記式（１）において、Ｒ１、Ｒ２及びＲ３は、それぞれ独立して、水素原子又は炭素数１～４のアルキル基であり、Ａは、炭素数２～４のアルキレン基であり、かつｍ及びｎは、それぞれ独立して、１．０～５０であり、
    　前記ポリマーの数平均分子量が、１０，０００以下であり、かつ
    　前記ポリマーのＩＯＢ値が、０．４～１．８である、
    組成物。     A cleaning composition comprising:
    The composition comprises water, a moisturizer, a nonionic surfactant, and a polymer having a structure represented by the following formula (1):
    In the formula (1), R 1 , R 2 and R 3 each independently represent a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, A represents an alkylene group having 2 to 4 carbon atoms, and m and n each independently represent an integer of 1.0 to 50.
    The number average molecular weight of the polymer is 10,000 or less, and the IOB value of the polymer is 0.4 to 1.8.
    Composition.
  2. 　前記式（１）において、Ａが、下記式（２）で表され：
    　前記式（２）において、Ｒ４は、炭素数１又は２のアルキル基である、
    請求項１に記載の組成物。     In the formula (1), A is represented by the following formula (2):
    In the formula (2), R 4 is an alkyl group having 1 or 2 carbon atoms.
    The composition of claim 1.
  3. 　前記保湿剤と前記ノニオン界面活性剤との質量比（前記保湿剤／前記ノニオン界面活性剤）が、０．２以上１０以下である、請求項１又は２に記載の組成物。 The composition according to claim 1 or 2, wherein the mass ratio of the moisturizer to the nonionic surfactant (moisturizer/nonionic surfactant) is 0.2 or more and 10 or less.
  4. 　前記ノニオン界面活性剤のＨＬＢ値が、５．０～２０．０である、請求項１又は２に記載の組成物。 The composition according to claim 1 or 2, wherein the HLB value of the nonionic surfactant is 5.0 to 20.0.
  5. 　オクトキシグリセリン及び／又はフェノキシエタノールを更に含む、請求項１又は２に記載の組成物。 The composition according to claim 1 or 2, further comprising octoxyglycerin and/or phenoxyethanol.
  6. 　前記保湿剤が、グリセリン、ジプロピレングリコール、プロピレングリコール、及び１，３－ブチレングリコールからなる群より選択される少なくとも１つを含む、請求項１又は２に記載の組成物。 The composition according to claim 1 or 2, wherein the moisturizing agent comprises at least one selected from the group consisting of glycerin, dipropylene glycol, propylene glycol, and 1,3-butylene glycol.
  7. 　可溶化系である、請求項１又は２に記載の組成物。 The composition according to claim 1 or 2, which is a solubilizing system.
  8. 　メイク落とし用である、請求項１又は２に記載の組成物。 The composition according to claim 1 or 2, which is used to remove makeup.
  9. 　水と、
    　高級脂肪酸及び／又はその塩と、
    　下記式（１）で表される構造を有するポリマーと
    を含み、
    　前記式（１）において、Ｒ１、Ｒ２及びＲ３は、それぞれ独立して、水素原子又は炭素数１～４のアルキル基であり、Ａは、炭素数２～４のアルキレン基であり、かつｍ及びｎは、それぞれ独立して、１．０～５０であり、
    　前記ポリマーの数平均分子量が、１０，０００以下であり、かつ
    　前記ポリマーのＩＯＢ値が、０．４～１．８である、
    洗浄料組成物。     water and,
    A higher fatty acid and/or a salt thereof,
    and a polymer having a structure represented by the following formula (1):
    In the formula (1), R 1 , R 2 and R 3 each independently represent a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, A represents an alkylene group having 2 to 4 carbon atoms, and m and n each independently represent an integer of 1.0 to 50.
    The number average molecular weight of the polymer is 10,000 or less, and the IOB value of the polymer is 0.4 to 1.8.
    Cleansing composition.
  10. 　前記式（１）において、Ａが、下記式（２）で表され：
    　前記式（２）において、Ｒ４は、炭素数１又は２のアルキル基である、
    請求項９に記載の組成物。     In the formula (1), A is represented by the following formula (2):
    In the formula (2), R 4 is an alkyl group having 1 or 2 carbon atoms.
    The composition of claim 9.
  11. 　前記ポリマーが、ランダム共重合体である、請求項９又は１０に記載の組成物。 The composition according to claim 9 or 10, wherein the polymer is a random copolymer.
  12. 　少なくとも１種の多価アルコールを更に含む、請求項９又は１０に記載の組成物。 The composition according to claim 9 or 10, further comprising at least one polyhydric alcohol.
  13. 　前記多価アルコールの合計含有量と前記ポリマーの含有量との比（前記多価アルコール：前記ポリマー）が、５：１～８０：１である、請求項１２に記載の組成物。 The composition according to claim 12, wherein the ratio of the total content of the polyhydric alcohol to the content of the polymer (polyhydric alcohol:polymer) is 5:1 to 80:1.
  14. 　ポリエチレングリコール骨格を有する成分の含有量が、０．０１質量％以下である、請求項９又は１０に記載の組成物。 The composition according to claim 9 or 10, wherein the content of the component having a polyethylene glycol skeleton is 0.01% by mass or less.
  15. 　前記高級脂肪酸が、炭素数１２～１８の脂肪酸である、請求項９又は１０に記載の組成物。 The composition according to claim 9 or 10, wherein the higher fatty acid is a fatty acid having 12 to 18 carbon atoms.
  16. 　皮膚洗浄用である、請求項９又は１０に記載の組成物。 The composition according to claim 9 or 10, which is for cleansing the skin.
PCT/JP2023/043975 2022-12-28 2023-12-08 Cleansing composition WO2024142844A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2022-212618 2022-12-28
JP2022-212356 2022-12-28

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WO2024142844A1 true WO2024142844A1 (en) 2024-07-04

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