JP7349796B2 - Polymer for humectant - Google Patents

Description

The present invention relates to polymers for humectants. More specifically, the present invention relates to a humectant polymer useful for humectants, skin cosmetics, skin external preparations, hair cosmetics, and the like.

Cosmetics contain moisturizers to prevent skin from drying out. Conventional moisturizers include polyhydric alcohols such as glycerin and 1,3-butanediol, and sodium hyaluronate.

As conventional moisturizers, film-forming polymer moisturizers have also been proposed, in which polymers form a film on the skin surface to suppress water evaporation. For example, a hydrophilic polymer having a specific unit structure containing an amide group (Patent Document 1) has a specific structural unit, has a weight average molecular weight (Mw) of 5,000 to 150,000, and has a temperature of 30 A water-soluble (meth)acrylamide polymer for cosmetics or external skin preparations, which has a mass reduction rate of 25% by mass or less after leaving a 50% by mass aqueous solution of the polymer for 6 hours at 60% relative humidity at 60% relative humidity (Patent Document 2) , an amphipathic polymer compound (A) consisting of a copolymer containing vinylpyrrolidone as a constituent unit, and loquat leaf extract (B) as extract pure content (B') 0.001% by mass to 0.02% by mass and soybean extract (C) (extract pure content (C')), and the content mass ratio expressed as (A)/[(B')+(C')] is 1 to 1000. (Patent Document 3) has been proposed.

However, conventional polyhydric alcohols such as glycerin and 1,3-butanediol lack hygroscopicity under low humidity and cannot maintain sufficient moisture retention, and furthermore, under high humidity they have poor hygroscopicity. There is a problem in that because it is too high, it becomes sticky. In addition, conventional sodium hyaluronate has the problem that it is very expensive, and because the entire system thickens due to its ultra-high molecular weight, there is a problem that there is a limit to the amount of sodium hyaluronate that can be blended.

Furthermore, the moisturizing agents described in Patent Document 1 and Patent Document 2 have poor moisturizing properties, and there is room for improvement, particularly in moisturizing properties under low humidity. Furthermore, the moisturizing agent described in Patent Document 3 cannot maintain its moisturizing effect unless loquat leaf extract or soybean extract is used in combination with a polymeric moisturizing agent.

Recently, the present applicant has conducted various studies on compounds with excellent moisturizing properties, and has found that they have structural units derived from unsaturated monomers having a lactam structure and structural units derived from unsaturated monomers having a specific functional group. Even when no other moisturizing ingredients are added to the polymer, it exhibits excellent moisturizing performance on its own, maintains moisture retention even under low humidity conditions, and this polymer can be manufactured at a lower cost than hyaluronate Na. It has been reported that there is something (Patent Document 4).

Japanese Patent Application Publication No. 2011-213903 Japanese Patent Application Publication No. 2010-196048 International Publication No. 13/054760 JP2017-186256A

The present applicant has conducted various studies in more detail regarding the humectant polymer reported in Patent Document 4. As a result, we found that a humectant polymer with a weight average molecular weight controlled within a specific range has excellent moisturizing properties, application feel (elasticity), and residual feel (frictional feel, adhesive feeling) when used as a humectant. The present invention has now been completed.

An object of the present invention is to provide a polymer for a humectant that has excellent moisturizing properties, application feel (elasticity), and residual feel (frictional feel, adhesive feeling) when used as a humectant.

（一般式（１）中、Ｒ^１、Ｒ^２、Ｒ^３は、同一または異なって、水素原子、水酸基、炭素数１～１０のアルキル基、－（ＣＨ_２）ｚＣＯＯＲ^ｐ（－（ＣＨ_２）ｚＣＯＯＲ^ｐは、－ＣＯＯＲ^４またはその他の－（ＣＨ_２）ｚＣＯＯＲ^ｐと無水物を形成していてもよい）を表し、ｗは０～２の整数を表し、ｚは０～２の整数を表し、Ｒ^４、Ｒ^ｐは、同一または異なって、水素原子、１価～３価の金属原子、１価～３価の金属原子を含む原子団、アンモニウム塩、第４級アンモニウム塩基、置換基を有していてもよい（ポリ）オキシアルキレン基、または置換基として水酸基、アルコキシ基、（ポリ）オキシアルキレン基、オキソ基含有基、ハロゲン原子、エポキシ基、およびカルボニル基からなる群より選択される少なくとも１種を有していてもよい炭素数１～３０の炭化水素基を表す。） The humectant polymer of the present invention is
It has a structural unit (a) derived from an unsaturated monomer (A) having a lactam structure and a structural unit (b) derived from an unsaturated monomer (B) represented by the general formula (1),
The weight average molecular weight is 80,000 or more.

(In general formula (1), R ¹ , R ² , and R ³ are the same or different and each represents a hydrogen atom, a hydroxyl group, an alkyl group having 1 to 10 carbon atoms, -(CH ₂ )zCOOR ^p (-(CH ₂ ) zCOOR ^p represents -COOR ⁴ or other -(CH ₂ ) may form an anhydride with zCOOR ^p ), w represents an integer from 0 to 2, and z represents an integer from 0 to 2. , R ⁴ and R ^p are the same or different and represent a hydrogen atom, a monovalent to trivalent metal atom, an atomic group containing a monovalent to trivalent metal atom, an ammonium salt, a quaternary ammonium base, or a substituent. A (poly)oxyalkylene group that may have a substituent, or a substituent selected from the group consisting of a hydroxyl group, an alkoxy group, a (poly)oxyalkylene group, an oxo group-containing group, a halogen atom, an epoxy group, and a carbonyl group. Represents a hydrocarbon group having 1 to 30 carbon atoms that may contain at least one type.)

In one embodiment, the unsaturated monomer (A) having a lactam structure is an unsaturated monomer having a pyrrolidone ring.

（一般式（２）中、Ｒ^５は、水素原子またはメチル基を表し、Ｒ^６は、水素原子、１価～３価の金属原子、１価～３価の金属原子を含む原子団、アンモニウム塩、置換基を有していてもよい（ポリ）オキシアルキレン基、または置換基として水酸基、アルコキシ基、（ポリ）オキシアルキレン基、オキソ基含有基、ハロゲン原子、エポキシ基、およびカルボニル基からなる群より選択される少なくとも１種を有していてもよい炭素数１～３０の炭化水素基を表す。） In one embodiment, the unsaturated monomer (B) is represented by general formula (2).

(In general formula (2), R ⁵ represents a hydrogen atom or a methyl group, and R ⁶ represents a hydrogen atom, a monovalent to trivalent metal atom, an atomic group containing a monovalent to trivalent metal atom, ammonium A salt, a (poly)oxyalkylene group which may have a substituent, or a substituent consisting of a hydroxyl group, an alkoxy group, a (poly)oxyalkylene group, an oxo group-containing group, a halogen atom, an epoxy group, and a carbonyl group Represents a hydrocarbon group having 1 to 30 carbon atoms that may contain at least one member selected from the group.)

In one embodiment, the structural unit (b) is a structure derived from at least one selected from the group consisting of (meth)acrylic acid or a salt thereof, a polyalkylene glycol-containing monomer, and a hydroxyl group-containing monomer. It is a unit.

In one embodiment, the ratio of the structural unit (a) to 100% by mass of all structural units is 30% by mass to 99% by mass.

In one embodiment, the humectant polymer of the present invention is water-soluble.

In one embodiment, the humectant polymer of the present invention is used in a humectant.

In one embodiment, the humectant polymer of the present invention is used in skin cosmetics, external skin preparations, or hair cosmetics.

The humectant of the present invention contains the humectant polymer of the present invention.

The skin cosmetic, external skin preparation, or hair cosmetic of the present invention contains the moisturizing agent polymer of the present invention.

According to the present invention, it is possible to provide a polymer for a humectant that has excellent moisturizing properties, application feel (elasticity), and residual feel (frictional feel, sticky feeling) when used as a humectant.

When the expression "mass" is used in this specification, it may be read as "weight", which has conventionally been commonly used as a unit of weight, and conversely, the expression "weight" in this specification If there is, it may be read as "mass", which is commonly used as an SI unit indicating weight.

In this specification, "a structural unit derived from a monomer (P)" (P represents any appropriate symbol, and (P) may not be written) typically refers to a "monomer (P)-derived structural unit" The polymerizable unsaturated double bond of the polymerizable unsaturated double bond of the polymer (P) (or simply the monomer) is opened by polymerization, and the unit (Q) (Q is optional) forms at least a part of the polymer. , and the notation (Q) may not be used). Specifically, the structural unit derived from the monomer (P) represented by the following general formula (P) is the structural unit represented by the general formula (Q). In addition, the above-mentioned "structural unit derived from monomer (P)" refers to the structural unit (shown below) formed by polymerization of monomer (P) (or simply "monomer") as described above. In a specific example, a structural unit formed by a different manufacturing method may be used as long as it has the same structure as the structural unit represented by general formula (Q).

Combinations of two or more of the individual preferred embodiments of the invention described below are also preferred embodiments of the invention.

≪Polymer for humectant≫
The humectant polymer of the present invention has a structural unit (a) derived from an unsaturated monomer (A) having a lactam structure, and a structure derived from an unsaturated monomer (B) represented by the general formula (1). unit (b). Since the humectant polymer of the present invention has such a structure, it exhibits excellent moisturizing performance even when used alone, and is also excellent in maintaining moisturizing properties under low humidity. In addition, the humectant polymer of the present invention has an excellent balance between hydrophilicity and lipophilicity, so it has low hygroscopicity under high humidity, and when used in cosmetics etc., it suppresses stickiness under high humidity. be able to. In addition, the unsaturated monomer (A) having a lactam structure, the structural unit (a) derived from the unsaturated monomer (A) having a lactam structure, the unsaturated monomer represented by the general formula (1) ( B), each of the structural units (b) derived from the unsaturated monomer (B) represented by the general formula (1) may be one type or two or more types.

The weight average molecular weight of the humectant polymer of the present invention is 80,000 or more, preferably 100,000 to 1,000,000, more preferably 100,000 to 800,000, still more preferably 100,000 to 500,000, even more preferably 100,000 to 300,000. It is particularly preferably from 100,000 to 250,000, most preferably from 100,000 to 200,000. The weight average molecular weight of the humectant polymer of the present invention is adjusted to such a narrow range, so that when used as a humectant, it has excellent moisturizing properties, application feel (elasticity), and residual feel (frictional feeling, adhesive feeling). is excellent. The evaluation of application feel (elasticity) and residual feel (frictional feel, adhesive feeling) will be described in detail later.

The humectant polymer of the present invention has a structural unit (b) derived from the unsaturated monomer (B) represented by the general formula (1).

In general formula (1), R ¹ , R ² , and R ³ are the same or different and each represents a hydrogen atom, a hydroxyl group, an alkyl group having 1 to 10 carbon atoms, -(CH ₂ )zCOOR ^p (-(CH ₂ )zCOOR ^p represents -COOR ⁴ or other -(CH ₂ )zCOOR ^p (which may form an anhydride), w represents an integer of 0 to 2, z represents an integer of 0 to 2, R ⁴ and R ^p are the same or different and each has a hydrogen atom, a monovalent to trivalent metal atom, an atomic group containing a monovalent to trivalent metal atom, an ammonium salt, a quaternary ammonium base, or a substituent. or a (poly)oxyalkylene group which may be a substituent, or at least one selected from the group consisting of a hydroxyl group, an alkoxy group, a (poly)oxyalkylene group, an oxo group-containing group, a halogen atom, an epoxy group, and a carbonyl group. Represents a hydrocarbon group having 1 to 30 carbon atoms which may contain one type.

The alkyl group having 1 to 10 carbon atoms in R ¹ , R ² and R ³ is preferably an alkyl group having 1 to 5 carbon atoms, more preferably an alkyl group having 1 to 3 carbon atoms. Examples of such an alkyl group include a methyl group, an ethyl group, and a propyl group, preferably a methyl group or an ethyl group, and more preferably a methyl group.

R ¹ and R ² are preferably hydrogen atoms.

R ³ is preferably a hydrogen atom, a hydroxyl group, or a methyl group, more preferably a hydrogen atom or a methyl group.

w is preferably 0 or 1, more preferably 0.

As the monovalent metal atom for R ⁴ and R ^p , any suitable monovalent metal atom can be employed as long as the effects of the present invention are not impaired. Examples of such monovalent metal atoms include alkali metal atoms such as lithium, sodium, and potassium, with sodium and potassium being preferred.

As the divalent metal atom in R ⁴ and R ^p , any suitable divalent metal atom can be employed as long as the effects of the present invention are not impaired. Examples of such divalent metal atoms include alkaline earth metal atoms such as calcium and magnesium.

As the trivalent metal atom in R ⁴ and R ^p , any suitable trivalent metal atom may be employed as long as the effects of the present invention are not impaired. Examples of such trivalent metal atoms include aluminum and iron.

As the atomic group containing a monovalent to trivalent metal atom in R ⁴ and R ^p , any suitable atomic group containing a monovalent to trivalent metal atom may be adopted as long as the effect of the present invention is not impaired. obtain. Such atomic groups containing monovalent to trivalent metal atoms include, for example, diammine silver ion, bioreo, tetraammine zinc (II) ion, hexaammine nickel (II) ion, hexaammine chromium (III) ion, and roseo. Examples include.

As the quaternary ammonium base for R ⁴ and R ^p , any appropriate trivalent metal atom may be employed as long as the effects of the present invention are not impaired. Examples of such quaternary ammonium bases include a group represented by - ⁺ NR ⁷ ₃ . Here, R ⁷ is the same or different and represents a hydrogen atom or an alkyl group having 1 to 6 carbon atoms.

The (poly)oxyalkylene group which may have a substituent in R ⁴ and R ^p may have any suitable substituent as long as the effect of the present invention is not impaired. Oxyalkylene groups may be employed. Examples of the (poly)oxyalkylene group which may have such a substituent include a group represented by the following general formula (A).

In the general formula (A), R ^a is an alkylene group having 2 to 30 carbon atoms, R ^b is a hydrogen atom or a group having 1 to 30 carbon atoms which may have a substituent, and n is It is a number from 1 to 200.

Examples of the group having 1 to 30 carbon atoms in R ^b in the general formula (A) include an alkyl group, an aryl group, an acyl group, a carbamoyl group, and a heterocyclic group, which further have a substituent. You can leave it there.

R ^b in the general formula (A) is preferably a group having 1 to 18 carbon atoms, more preferably a group having 1 to 12 carbon atoms.

In general formula (A), R ^a is selected from the group consisting of -CH ₂ CH ₂ - group, -CH ₂ CH ₂ (CH ₃ )- group, and -CH ₂ CH ₂ (C ₂ H ₅ )- group It is preferable to contain at least one of the -CH ₂ CH ₂ - group, -CH ₂ CH ₂ (CH ₃ )- group, and -CH ₂ CH ₂ (C ₂ H ₅ )- group in the total alkylene group. The proportion is preferably 50 mol% or more, more preferably 80 mol% or more, and even more preferably 90 mol% or more. In the general formula (A), R ^a preferably contains a -CH ₂ CH ₂ - group, and the proportion of the -CH ₂ CH ₂ - group in the total alkylene group is preferably 50 mol% or more, It is more preferably 80 mol% or more, and even more preferably 90 mol% or more.

In general formula (A), n is preferably a number from 1 to 100, more preferably from 1 to 60.

As the hydrocarbon group having 1 to 30 carbon atoms in R ⁴ and R ^p , any suitable hydrocarbon group having 1 to 30 carbon atoms may be employed as long as the effects of the present invention are not impaired. Examples of such hydrocarbon groups having 1 to 30 carbon atoms include alkyl groups having 1 to 30 carbon atoms such as methyl group, ethyl group, propyl group, isopropyl group, butyl group, isobutyl group, and hexyl group; cyclopropyl cycloalkyl groups having 3 to 30 carbon atoms such as cyclobutyl, cyclopentyl, and cyclohexyl groups; aromatic hydrocarbon groups having 6 to 30 carbon atoms such as phenyl, benzyl, tolyl, and o-xylyl groups; etc. can be mentioned. The hydrocarbon group having 1 to 30 carbon atoms is preferably an alkyl group having 1 to 20 carbon atoms, more preferably an alkyl group having 1 to 10 carbon atoms, and even more preferably an alkyl group having 1 to 6 carbon atoms. It is particularly preferably an alkyl group having 1 to 2 carbon atoms, and most preferably an alkyl group having 1 carbon number.

The hydrocarbon group having 1 to 30 carbon atoms in R ⁴ and R ^p is a substituent selected from the group consisting of a hydroxyl group, an alkoxy group, a (poly)oxyalkylene group, an oxo group-containing group, a halogen atom, an epoxy group, and a carbonyl group. It may have at least one selected from the group. Note that the number of carbon atoms constituting these substituents is not included in the number of carbon atoms in the "hydrocarbon group having 1 to 30 carbon atoms" in R ² . Examples of the alkoxy group include alkoxy groups having 1 to 10 carbon atoms such as methoxy group and ethoxy group. Examples of the (poly)oxyalkylene group include (poly)oxyalkylene groups in which the alkylene group has 1 to 3 carbon atoms and has a repeating number of 1 to 100, such as oxyethylene group and oxypropylene group. . Examples of the oxo group-containing group include oxo group-containing groups such as a sulfonic acid group and a phosphoric acid group. Examples of the halogen atom include halogen atoms such as a fluorine atom, a chlorine atom, a bromine atom, and an iodine atom. Examples of the epoxy group include cyclic ether-containing groups having 2 to 8 carbon atoms.

R ⁴ and R ^p are preferably a hydrogen atom, a monovalent metal atom, or a quaternary ammonium base, and more preferably a hydrogen atom or a monovalent metal atom.

As the unsaturated monomer (B) represented by the general formula (1), any appropriate unsaturated monomer (B) represented by the general formula (1) may be used as long as the effect of the present invention is not impaired. ) may be adopted. Examples of the unsaturated monomer (B) represented by the general formula (1) include unsaturated monocarboxylic acids such as (meth)acrylic acid, crotonic acid, and α-hydroxyacrylic acid, and salts thereof. ; Esters of these unsaturated monocarboxylic acids and alcohols; Unsaturated dicarboxylic acids such as maleic acid, itaconic acid, citraconic acid, and fumaric acid, salts thereof, and anhydrides thereof; Monomers of these unsaturated dicarboxylic acids Half-esters and diesters of alcohol and alcohol; methyl (meth)acrylate, ethyl (meth)acrylate, n-propyl (meth)acrylate, isopropyl (meth)acrylate, n-butyl (meth)acrylate, isobutyl (meth)acrylate, tert-butyl (meth)acrylate, sec-butyl (meth)acrylate, 2-ethylhexyl (meth)acrylate, n-octyl (meth)acrylate, tridecyl (meth)acrylate, n-lauryl (meth)acrylate, dodecyl (meth)acrylate Alkyl (meth)acrylates such as acrylate and stearyl (meth)acrylate; cycloalkyl (meth)acrylates such as cyclohexyl (meth)acrylate and isobornyl (meth)acrylate; α-hydroxymethyl acrylate, α-hydroxyethyl acrylate, 2-hydroxy Hydroxyl group-containing (meth)acrylates such as ethyl (meth)acrylate, 2-hydroxypropyl (meth)acrylate, 3-hydroxypropyl (meth)acrylate, 2-hydroxybutyl (meth)acrylate, 4-hydroxybutyl (meth)acrylate; (di)ethylene glycol (methoxy) (meth)acrylate such as ethylene glycol methoxy (meth)acrylate, diethylene glycol (meth)acrylate, diethylene glycol methoxy (meth)acrylate, alkoxypolyalkylene glycol (meth)acrylate such as alkoxypolyethylene glycol methacrylate; Oxo group-containing (meth)acrylates such as sulfopropyl (meth)acrylate and (meth)acryloyloxyethyl phosphate; fluorocarbons such as trifluoroethyl (meth)acrylate, tetrafluoropropyl (meth)acrylate, and octafluoropentyl (meth)acrylate Group-containing alkyl (meth)acrylates; epoxy group-containing (meth)acrylates such as glycidyl (meth)acrylate, α-methylglycidyl (meth)acrylate, and glycidyl allyl ether; acetonyl (meth)acrylate, diacetone (meth)acrylate, 2- Carbonyl group-containing (meth)acrylates such as hydroxypropyl (meth)acrylate acetylacetate, butanediol-1,4-acrylate acetylacetate, 2-(acetoacetoxy)ethyl (meth)acrylate, (meth)acryloyloxyalkylpropenal; Examples include.

The unsaturated monomer (B) represented by the general formula (1) is preferably an unsaturated monocarboxylic acid and a salt thereof; an ester of an unsaturated monocarboxylic acid and an alcohol having 1 to 22 carbon atoms; Unsaturated dicarboxylic acids, salts thereof, and anhydrides thereof; half esters and diesters of unsaturated dicarboxylic acid monomers and alcohols having 1 to 22 carbon atoms; alkyl (meth)acrylates having 1 to 30 carbon atoms; is preferred.

As the salt, any suitable salt may be employed as long as it does not impair the effects of the present invention. Examples of such salts include alkali metal salts, alkaline earth metal salts, and quaternary ammonium salts, with alkali metal salts being preferred.

When the unsaturated monomer (B) has a (poly)oxyalkylene group, it is preferably a compound having 3 to 200 carbon atoms, more preferably a compound having 7 to 100 carbon atoms, and even more preferably, It is a compound having 7 to 60 carbon atoms. Further, when the unsaturated monomer (B) has a (poly)oxyalkylene group, preferably the alkylene group constituting the oxyalkylene group has 1 to 5 carbon atoms, and the number of repeats of the oxyalkylene group is 1. ~100, and the number of carbon atoms in the structure other than the (poly)oxyalkylene group is 3 to 20. The alkylene group preferably has 1 to 4 carbon atoms, and even more preferably 1 to 3 carbon atoms. The repeating number of the oxyalkylene group is more preferably 1 to 90, and still more preferably 1 to 80.

When the unsaturated monomer (B) does not have a (poly)oxyalkylene group, the unsaturated monomer (B) is preferably a compound having 2 to 50 carbon atoms, more preferably a compound having 2 to 50 carbon atoms. 40 carbon atoms, more preferably 2 to 30 carbon atoms.

The unsaturated monomer (B) is preferably represented by general formula (2).

In the general formula (2), R ⁵ represents a hydrogen atom or a methyl group, and R ⁶ represents a hydrogen atom, a monovalent to trivalent metal atom, an atomic group containing a monovalent to trivalent metal atom, an ammonium salt , a (poly)oxyalkylene group which may have a substituent, or a group consisting of a hydroxyl group, an alkoxy group, a (poly)oxyalkylene group, an oxo group-containing group, a halogen atom, an epoxy group, and a carbonyl group as a substituent represents a hydrocarbon group having 1 to 30 carbon atoms which may contain at least one selected from the following.

As the monovalent metal atom in R ⁶ , any suitable monovalent metal atom may be employed as long as the effects of the present invention are not impaired. Examples of such monovalent metal atoms include alkali metal atoms such as lithium, sodium, and potassium, with sodium and potassium being preferred.

As the divalent metal atom in R ⁶ , any suitable divalent metal atom may be employed as long as the effects of the present invention are not impaired. Examples of such divalent metal atoms include alkaline earth metal atoms such as calcium and magnesium.

As the trivalent metal atom in R ⁶ , any suitable trivalent metal atom may be employed as long as the effects of the present invention are not impaired. Examples of such trivalent metal atoms include aluminum and iron.

As the atomic group containing a monovalent to trivalent metal atom in R ⁶ , any suitable atomic group containing a monovalent to trivalent metal atom can be employed as long as the effects of the present invention are not impaired. Such atomic groups containing monovalent to trivalent metal atoms include, for example, diammine silver ion, bioreo, tetraammine zinc (II) ion, hexaammine nickel (II) ion, hexaammine chromium (III) ion, and roseo. Examples include.

The (poly)oxyalkylene group that may have a substituent in R ⁶ is a (poly)oxyalkylene group that may have any suitable substituent within the range that does not impair the effects of the present invention. can be adopted. Examples of the (poly)oxyalkylene group which may have such a substituent include a group represented by the following general formula (A).

For the explanation of general formula (A), the description of the (poly)oxyalkylene group which may have a substituent in R ⁴ and R ^p in general formula (1) can be directly cited.

As the hydrocarbon group having 1 to 30 carbon atoms in R ⁶ , any suitable hydrocarbon group having 1 to 30 carbon atoms may be employed as long as the effects of the present invention are not impaired. Examples of such hydrocarbon groups having 1 to 30 carbon atoms include alkyl groups having 1 to 30 carbon atoms such as methyl group, ethyl group, propyl group, isopropyl group, butyl group, isobutyl group, and hexyl group; cyclopropyl cycloalkyl groups having 3 to 30 carbon atoms such as cyclobutyl, cyclopentyl, and cyclohexyl groups; aromatic hydrocarbon groups having 6 to 30 carbon atoms such as phenyl, benzyl, tolyl, and o-xylyl groups; etc. can be mentioned. The hydrocarbon group having 1 to 30 carbon atoms is preferably an alkyl group having 1 to 20 carbon atoms, more preferably an alkyl group having 1 to 10 carbon atoms, and even more preferably an alkyl group having 1 to 6 carbon atoms. It is particularly preferably an alkyl group having 1 to 2 carbon atoms, and most preferably an alkyl group having 1 carbon number.

The hydrocarbon group having 1 to 30 carbon atoms in R ⁶ is selected from the group consisting of a hydroxyl group, an alkoxy group, a (poly)oxyalkylene group, an oxo group-containing group, a halogen atom, an epoxy group, and a carbonyl group as a substituent. It may contain at least one kind. Note that the number of carbon atoms constituting these substituents is not included in the number of carbon atoms in the "hydrocarbon group having 1 to 30 carbon atoms" in R ² . Examples of the alkoxy group include alkoxy groups having 1 to 10 carbon atoms such as methoxy group and ethoxy group. Examples of the (poly)oxyalkylene group include (poly)oxyalkylene groups in which the alkylene group has 1 to 3 carbon atoms and has a repeating number of 1 to 100, such as oxyethylene group and oxypropylene group. . Examples of the oxo group-containing group include oxo group-containing groups such as a sulfonic acid group and a phosphoric acid group. Examples of the halogen atom include halogen atoms such as a fluorine atom, a chlorine atom, a bromine atom, and an iodine atom. Examples of the epoxy group include cyclic ether-containing groups having 2 to 8 carbon atoms.

R ⁶ is preferably a hydrogen atom, a monovalent to trivalent metal atom, an atomic group containing a monovalent to trivalent metal atom, an ammonium salt, or a (poly)oxyalkylene which may have a substituent. A hydrocarbon group having 1 to 30 carbon atoms and having a hydroxyl group.

The unsaturated monomer (B) represented by the general formula (2) is preferably (meth)acrylic acid or a salt thereof, or a compound having the above-mentioned hydrocarbon group having 1 to 30 carbon atoms in the ester moiety. Meth)acrylic acid esters are mentioned.

The structural unit (b) derived from the unsaturated monomer (B) represented by the general formula (2) is preferably a structural unit derived from (meth)acrylic acid or a salt thereof, or the above-mentioned structural unit having 1 to 30 carbon atoms. A structural unit derived from (meth)acrylic acid ester having a hydrocarbon group in the ester moiety, more preferably a structural unit derived from (meth)acrylic acid or a salt thereof.

The unsaturated monomer (A) having a lactam structure is a monomer having a lactam ring and an ethylenically unsaturated hydrocarbon group, and is preferably represented by general formula (3).

In general formula (3), R ⁸ , R ⁹ , R ¹⁰ , and R ¹¹ are the same or different and represent a hydrogen atom, an alkyl group having 1 to 10 carbon atoms, or a group represented by -COOR ⁴ described above. . x represents an integer from 0 to 5. y represents an integer from 1 to 3.

The number of carbon atoms in the alkyl group having 1 to 10 carbon atoms in R ⁸ , R ⁹ , R ¹⁰ and R ¹¹ is preferably 1 to 5, more preferably 1 to 3. Examples of such an alkyl group include a methyl group and an ethyl group, with a methyl group being preferred.

R ⁸ and R ⁹ are preferably hydrogen atoms.

R ¹⁰ is preferably a hydrogen atom or a group represented by -COOR ⁴ described above. When R ¹⁰ is the group represented by -COOR ⁴ described above, R ⁴ in the group represented by -COOR ⁴ is preferably a hydrogen atom or an alkyl group having 1 to 8 carbon atoms.

R ¹¹ is preferably a hydrogen atom or a methyl group, more preferably a hydrogen atom.

x is preferably an integer of 0 to 4, more preferably an integer of 0 to 3, and even more preferably 0.

y is preferably 1 or 2, more preferably 1.

Examples of the compound represented by general formula (3) include N-vinylpyrrolidone, N-vinyl-5-methylpyrrolidone, N-vinylpiperidone, N-vinylcaprolactam, 1-(2-propenyl)-2-pyrrolidone, Examples include compounds represented by general formula (4). The number of compounds represented by general formula (3) may be one, or two or more.

In the general formula (4), R ¹² represents a hydrogen atom or an alkyl group having 1 to 8 carbon atoms.

The compound represented by general formula (3) is preferably an unsaturated monomer having a pyrrolidone ring, more preferably N-vinylpyrrolidone.

The humectant polymer of the present invention may have a structural unit (e) derived from a monomer (E) other than the structural unit (a) and the structural unit (b).

As the other monomer (E), any appropriate other monomer may be employed as long as the effects of the present invention are not impaired. Examples of such other monomers include acrylamide.

In the humectant polymer of the present invention, the proportion of the structural unit (a) is preferably 30% to 99% by mass, more preferably 40% to 97% by mass, based on 100% by mass of all structural units. The content is more preferably 45% to 95% by weight, particularly preferably 50% to 90% by weight.

In the humectant polymer of the present invention, the proportion of the structural unit (b) is preferably 1% by mass to 70% by mass, more preferably 3% by mass to 60% by mass, based on 100% by mass of all structural units. The content is more preferably 5% by mass to 50% by mass, particularly preferably 10% by mass to 50% by mass.

In the humectant polymer of the present invention, the proportion of the structural unit (e) is preferably 0% to 30% by mass, more preferably 0% to 20% by mass, based on 100% by mass of all structural units. The content is more preferably 0% to 10% by weight, particularly preferably 0% to 8% by weight, and most preferably 0% to 5% by weight.

In the humectant polymer of the present invention, the proportion of the structural unit (b) is preferably 1% by mass to 200% by mass, more preferably 5% by mass to 100% by mass, based on 100% by mass of the structural unit (a). % by mass, more preferably 10% by mass to 70% by mass. If the above ratio is within the above range, the balance between hydrophilicity and hydrophobicity of the humectant polymer of the present invention will be better.

In the humectant polymer of the present invention, the viscosity of an aqueous solution of the polymer with a solid content of 25% by mass is preferably 300 mPa·s to 10,000 mPa·s, more preferably 500 mPa·s to 7,000 mPa·s. If the above-mentioned viscosity is within the above-mentioned range, when the humectant polymer of the present invention is blended into cosmetics, thickening of the entire system can be suppressed, and there can be fewer restrictions on the amount to be blended. The above viscosity can be measured using a B-type viscometer.

The humectant polymer of the present invention is preferably water-soluble. Here, the term "the polymer for humectants of the present invention is water-soluble" means that when 0.5 g of the polymer is dissolved in 100 g of water at 25°C, the insoluble content is less than 0.5% by weight. say.

The structure of the humectant polymer of the present invention may be any suitable structure as long as the effects of the present invention are not impaired. Examples of such structures include random copolymer structures, graft structures, block copolymer structures, gradient copolymer structures, star structures, and dendrimer structures.

≪Production method of polymer for humectant≫
As the method for producing the humectant polymer of the present invention, any suitable production method may be employed as long as the effects of the present invention are not impaired. As such a manufacturing method, it can typically be manufactured by polymerizing monomer components, and specific examples and preferable examples of the monomer components are as described above.

The content of the unsaturated monomer (A) having a lactam structure in the monomer component serving as a raw material for the humectant polymer of the present invention is preferably 30% by mass to 100% by mass of the total monomers. The content is 99% by weight, more preferably 40% to 97% by weight, even more preferably 45% to 95% by weight, particularly preferably 50% to 90% by weight.

The content ratio of the unsaturated monomer (B) represented by general formula (1) in the monomer component serving as a raw material for the polymer for humectant of the present invention is preferably based on 100% by mass of the total monomers. is 1% by mass to 70% by mass, more preferably 3% to 60% by mass, even more preferably 5% to 50% by mass, particularly preferably 10% to 50% by mass.

The proportion of other monomers (E) in the monomer components that are raw materials for the humectant polymer of the present invention is preferably 0% to 30% by mass based on 100% by mass of the total monomers. , more preferably 0% to 20% by weight, further preferably 0% to 10% by weight, particularly preferably 0% to 8% by weight, and most preferably 0% to 5% by weight. It is.

The content ratio of the unsaturated monomer (B) represented by general formula (1) in the monomer component serving as the raw material for the polymer for humectant of the present invention is the unsaturated monomer (A) having a lactam structure. It is preferably 1% by mass to 200% by mass, more preferably 5% by mass to 100% by mass, and even more preferably 10% by mass to 70% by mass, based on the total of 100% by mass.

The polymerization of the humectant polymer of the present invention may be carried out in the absence of a solvent or in the presence of a solvent. Examples of the polymerization method include commonly used methods, such as solution polymerization, suspension polymerization, reverse phase suspension polymerization, cast polymerization, thin film polymerization, and spray polymerization.

Examples of methods for initiating polymerization of monomer components include a method of adding a polymerization initiator, a method of irradiating UV, a method of applying heat, and a method of irradiating light in the presence of a photoinitiator.

The humectant polymer of the present invention is preferably produced by a method in which monomer components are polymerized in the presence of a polymerization initiator. When polymerizing the monomer components, a polymerization initiator can be used as appropriate depending on the polymerization method. Examples of the polymerization initiator include hydrogen peroxide; persulfates such as sodium persulfate, potassium persulfate, and ammonium persulfate; dimethyl 2,2'-azobis(2-methylpropionate), 2,2'-azobis (isobutyronitrile), 2,2'-azobis(2-methylpropionamidine) dihydrochloride, 2,2'-azobis[N-(2-carboxyethyl)-2-methylpropionamidine] hydrate, 2,2'-azobis[2-(2-imidazolin-2-yl)propane], 2,2'-azobis[2-(2-imidazolin-2-yl)propane] dihydrochloride, 2,2'- Azo compounds such as azobis(1-imino-1-pyrrolidino-2-methylpropane) dihydrochloride; organic compounds such as benzoyl peroxide, lauroyl peroxide, peracetic acid, di-t-butyl peroxide, cumene hydroperoxide, etc. Peroxide: A redox initiator that generates radicals by combining an oxidizing agent and a reducing agent, such as ascorbic acid and hydrogen peroxide, sodium sulfoxylate and t-butyl hydroperoxide, persulfate and metal salt; Examples include. Among these polymerization initiators, at least one selected from hydrogen peroxide, persulfates, and azo compounds is preferred, and azo compounds are more preferred, since the residual monomer tends to decrease. It is. The number of polymerization initiators may be one, or two or more.

The amount of the polymerization initiator to be used may be any appropriate amount as long as it can initiate the polymerization of the monomer components without impairing the effects of the present invention. The amount of such a polymerization initiator used is preferably 0.01 parts by mass to 30 parts by mass, more preferably 0.02 parts by mass to 20 parts by mass, based on 100 parts by mass of all monomer components. The amount is more preferably 0.05 parts by mass to 10 parts by mass.

During polymerization, a chain transfer agent may be used if necessary. Specifically, the chain transfer agent includes, for example, a thiol-based chain transfer agent such as mercaptoethanol, thioglycolic acid, mercaptopropionic acid, and n-dodecylmercaptan; carbon tetrachloride, methylene chloride, bromoform, and bromotrichloroethane. , halides; secondary alcohols such as isopropyl alcohol and glycerin; hypophosphorous acid (salts) such as hypophosphorous acid and sodium hypophosphite (including their hydrates); phosphorous acid, Phosphite (salt) such as sodium phosphate; Sulfite (salt) such as sodium sulfite and potassium sulfite; Bisulfite (salt) such as sodium bisulfite and potassium bisulfite; Dithionite (salt) such as sodium dithionite. ); pyrosulfites (salts) such as potassium pyrosulfite; and the like. The number of chain transfer agents may be one, or two or more.

The amount of the chain transfer agent used is preferably 0 g or more and 60 g or less, more preferably 0 g or more and 50 g or less, per 1 mol of the total monomers used.

In the polymerization, heavy metal ions may be used for the purpose of promoting the reaction. The heavy metal ion means a metal ion having a specific gravity of 4 g/cm ³ or more. By using heavy metal ions, it is possible to reduce the amount of polymerization initiator used. Any suitable heavy metal ion may be used as the heavy metal ion as long as it is included in the form of an ion. As such heavy metal ions, it is preferable to use a solution obtained by dissolving a heavy metal compound because it is easy to handle. Examples of such heavy metal compounds include Mohr's salt (Fe(NH ₄ ) ₂ (SO ₄ ) _{2.6H 2} O), ferrous sulfate heptahydrate, ferrous chloride, ferric chloride, Examples include manganese chloride.

The amount of heavy metal ions used is preferably 0 ppm or more and 100 ppm or less, more preferably 0 ppm or more and 50 ppm or less, particularly preferably 0 ppm or more and 20 ppm or less, based on the total amount of the polymerization reaction solution.

When performing polymerization, the method of adding monomer components and polymerization initiators to the reaction vessel is to charge all the monomer components into the reaction vessel and then add the polymerization initiator into the reaction vessel. Method of conducting polymerization: A part of the monomer components is charged into a reaction vessel, and a polymerization initiator and the remaining monomer components are added into the reaction vessel continuously or in stages (preferably continuously). A method of carrying out copolymerization by charging a reaction vessel with a polymerization solvent and adding the entire amount of monomer components and a polymerization initiator; Sequential dropping method: A portion of one of the monomers (for example, an unsaturated monomer having a lactam structure) is charged into a reaction vessel, and a polymerization initiator and the remaining monomer components are added into the reaction vessel ( Copolymerization is carried out by adding (preferably continuously); and the like. Among these methods, a method in which a polymerization initiator and a monomer component are sequentially dropped into a reaction vessel is preferred because it can narrow (sharp) the molecular weight distribution of the resulting polymer.

Polymerization can be carried out either batchwise or continuously. In addition, solvents used as necessary during polymerization include, for example, water; alcohols such as methyl alcohol, ethyl alcohol, isopropyl alcohol (2-propanol), butanol, and THF (tetrahydrofuran); glycerin; polyethylene glycol ; Aromatic or aliphatic hydrocarbons such as benzene, toluene, xylene, cyclohexane, and n-heptane; Esters such as ethyl acetate; Ketones such as acetone and methyl ethyl ketone; Amides such as dimethylformamide; diethyl ether, dioxane, etc. ethers; etc. Among these, from the viewpoint of the monomer component and the solubility of the resulting polymer, at least one selected from the group consisting of water and lower alcohols having 1 to 4 carbon atoms is preferred, and more preferably water is used. , ethanol, and isopropyl alcohol. Most preferred is water. The solvent is relatively inexpensive, and the method for producing a humectant polymer of the present invention is also economically advantageous. The number of solvents may be one, or two or more.

In the method for producing a humectant polymer of the present invention, any other additives such as a pH adjuster, a buffer, etc. can be used as necessary.

The temperature during polymerization is preferably 20°C to 100°C, more preferably 40°C to 100°C. If the temperature during polymerization is within the above range, the amount of residual monomer components tends to decrease. Note that the temperature during polymerization does not need to be kept constant during the progress of the polymerization reaction; for example, polymerization can be started from room temperature and then raised to a set temperature at an appropriate heating time or heating rate. Thereafter, the set temperature may be maintained, or the polymerization temperature may be varied (increased or decreased) over time during the progress of the polymerization reaction, depending on the method of dropping monomer components, initiators, etc. You can. Further, when polymerizing the monomer components, it is preferable to stir the monomer components as appropriate in order to uniformly polymerize the monomer components.

The polymerization time may be appropriately set depending on the progress of the polymerization reaction. The polymerization time is preferably 1 hour to 10 hours. In addition, "polymerization time" represents the time during which the monomer is added.

The pressure within the reaction system during polymerization may be normal pressure (atmospheric pressure), reduced pressure, or increased pressure. The atmosphere within the reaction system may be either an air atmosphere or an inert gas atmosphere. Examples of the inert gas include nitrogen and argon, with nitrogen being preferred.

In the reaction system during polymerization, the solid content concentration in the aqueous solution (i.e., the polymerized solid content concentration of monomers) at the time the polymerization reaction is completed is preferably 10% by mass or more, more preferably 20% by mass. % to 80% by mass. If the solid content concentration at the end of the polymerization reaction is as high as this, polymerization can be carried out at high concentration and in one step. Therefore, the moisturizing agent polymer of the present invention can be obtained efficiently, such as by omitting the concentration step that is sometimes necessary in conventional production methods. Therefore, the manufacturing efficiency can be greatly increased, and as a result, the productivity of the humectant polymer of the present invention can be greatly improved, and the increase in manufacturing costs can also be suppressed. .

In the method for producing a polymer for a humectant according to the present invention, an aging step may be provided for the purpose of increasing the polymerization rate of monomers after the addition of all the raw materials used. The aging time is preferably 1 minute to 240 minutes, more preferably 1 minute to 180 minutes, and still more preferably 1 minute to 120 minutes. If the aging time is less than 1 minute, monomer components may remain due to insufficient aging, causing problems such as toxicity and odor caused by the remaining monomers.

A preferable temperature of the polymer solution in the aging step is in the same range as the above polymerization temperature. Therefore, the temperature of the polymer solution in the aging step may be maintained at a constant temperature (preferably the temperature at the end of the above-mentioned dropping), or may be changed over time during aging.

The method for producing a humectant polymer of the present invention may include a step of drying the obtained polymer (drying step).

The drying temperature in the drying step is preferably 80°C to 250°C. The drying time in the drying step is preferably 30 minutes to 3 hours.

The drying step is preferably carried out at a drying temperature of 80° C. to 250° C. for 50% or more of the total drying time of the drying step. When the drying temperature and drying time are within the above ranges, the physical properties of the polymer tend to be further improved. The drying step is more preferably carried out at a drying temperature of 80° C. to 250° C. throughout substantially all of the drying steps.

The drying temperature is specified by the heating medium temperature, but if it cannot be specified by the heating medium temperature, such as with microwaves, it is specified by the material temperature.

Examples of the drying method include hot air drying, no-air drying, reduced pressure drying, infrared drying, and microwave drying. Among these drying methods, it is more preferable to use hot air drying. When hot air drying is used, the drying air volume is preferably 0.01 m/sec to 10 m/sec, more preferably 0.1 m/sec to 5 m/sec.

The drying temperature range is more preferably 110°C to 220°C, even more preferably 120°C to 200°C. Further, the drying may be carried out at a constant temperature or by changing the temperature.

In the method for producing a polymer for humectants of the present invention, when drying the polymer, it is preferable to crush and/or classify the dried polymer. More preferably, both crushing and classification are performed.

Examples of the pulverizing method include a roll pulverizer such as a roll mill, a hammer pulverizer such as a hammer mill, an impact pulverizer, a cutter mill, a turbo grinder, a ball mill, a flash mill, a jet mill, etc. One method is to do so. Among these pulverizing methods, a method of pulverizing using a roll mill is preferred in order to control the particle size distribution. In order to control the particle size distribution, it is more preferable to grind twice or more continuously, and even more preferably to grind three or more times continuously. Furthermore, when pulverizing is performed two or more times, each pulverizer may be the same or different. It is also possible to use a combination of different types of crushers.

The crushed powder can be classified. For classification, sieves with specific openings can be used. Examples of classifiers used for classification with a sieve include vibrating sieves (unbalanced weight drive type, resonance type, vibration motor type, electromagnetic type, circular vibration type, etc.), in-plane motion sieves (horizontal motion type, horizontal circular-linear motion type, three-dimensional circular motion type, etc.), movable mesh sieves, forced stirring sieves, mesh surface vibrating sieves, wind sieves, sonic sieves, etc., and preferably vibrating sieves and in-plane motion sieves. It is.

≪Applications of polymers for humectants≫
The humectant polymer of the present invention can be used in humectants. That is, the humectant of the present invention contains the humectant polymer of the present invention.

The content ratio of the moisturizing agent polymer in the humectant of the present invention may be any appropriate content ratio within a range that does not impair the effects of the present invention. The content ratio of such a polymer for a humectant is preferably 1% by mass to 100% by mass, more preferably 2% by mass to 100% by mass, and even more preferably It is 3% by weight to 100% by weight, particularly preferably 4% to 100% by weight, and most preferably 5% to 100% by weight.

The humectant of the present invention may contain any appropriate components other than the humectant polymer of the present invention, as long as the effects of the present invention are not impaired. Such other ingredients include, for example, water, oily bases, humectants (excluding the humectants of the present invention), feel enhancers, surfactants, polymers, thickeners, gelling agents, solvents, Propellants, antioxidants, reducing agents, oxidizing agents, preservatives, antibacterial agents, chelating agents, pH adjusters, acids, alkalis, powders, inorganic salts, ultraviolet absorbers, skin whitening agents, vitamins and their derivatives , anti-inflammatory agents, anti-inflammatory agents, hair growth agents, blood circulation promoters, stimulants, hormones, anti-wrinkle agents, anti-aging agents, tightening agents, cooling agents, warming agents, wound healing promoters, irritation relievers, Examples include analgesics, cell activators, plant/animal/microbial extracts, antipruritics, exfoliating/dissolving agents, antiperspirants, cooling agents, astringents, enzymes, nucleic acids, fragrances, pigments, coloring agents, dyes, pigments, etc. It will be done. The number of such other components may be one, or two or more.

Other components that may be included in the humectant of the present invention are preferably a humectant (excluding the humectant of the present invention) and a feel improver.

Examples of humectants (excluding the humectant of the present invention) and feel improvers include glycerin, 1,3-butylene glycol, propylene glycol, 3-methyl-1,3-butanediol, 1,3-propanediol, 2-methyl-1,3-propanediol, trimethylolpropane, pentaerythritol, hexylene glycol, diglycerin, polyglycerin, diethylene glycol, polyethylene glycol, dipropylene glycol, polypropylene glycol, ethylene glycol/propylene glycol copolymer, etc. Polyols and their polymers; glycol alkyl ethers such as diethylene glycol monoethyl ether (ethoxydiglycol), ethylene glycol monoethyl ether, ethylene glycol monobutyl ether, diethylene glycol dibutyl ether; sorbitol, xylitol, erythritol, mannitol, maltitol, etc. Sugar alcohols; glucose, fructose, galactose, mannose, threose, xylose, arabinose, fucose, ribose, deoxyribose, maltose, trehalose, lactose, raffinose, gluconic acid, glucuronic acid, cyclodextrins (α-, β-, γ) - Cyclodextrins and modified cyclodextrins such as maltosylation and hydroxyalkylation), β-glucan, chitin, chitosan, heparin and derivatives, pectin, arabinogalactan, dextrin, dextran, glycogen, ethyl glucoside, glucosylethyl methacrylate Saccharides such as polymers or copolymers and their derivatives; hyaluronic acid, sodium hyaluronate; sodium chondroitin sulfate; mucoitin sulfate, caronine sulfate, keratosulfate, dermatan sulfate; white fungus extract, white fungus polysaccharide; fucoidan; tuberose polysaccharide , naturally occurring polysaccharides; organic acids such as citric acid, tartaric acid, and lactic acid and their salts; urea; 2-pyrrolidone-5-carboxylic acid and its salts such as sodium; betaine (trimethylglycine), proline, hydroxyproline, arginine, Amino acids and their Salt: Collagen, fish-derived collagen, atelocollagen, gelatin, elastin, collagen-degraded peptide, hydrolyzed collagen, hydroxypropylammonium chloride hydrolyzed collagen, elastin-degraded peptide, keratin-degraded peptide, hydrolyzed keratin, conchiolin-degraded peptide, hydrolyzed conchiolin, Protein peptides and their derivatives such as silk proteolytic peptide, hydrolyzed silk, sodium lauroyl hydrolyzed silk, soybean proteolytic peptide, wheat proteolytic peptide, hydrolyzed wheat protein, caseinolytic peptide, acylated peptide; palmitoyl oligopeptide, Acylated peptides such as palmitoyl pentapeptide and palmitoyl tetrapeptide; silylated peptides; lactic acid bacteria culture solution, yeast extract, eggshell membrane protein, bovine submandibular gland mucin, hypotaurine, sesame lignan glycoside, glutathione, albumin, whey Choline chloride, phosphorylcholine; Placenta extract, aerastin, collagen, aloe extract, hamamelis water, loofah water, chamomilla extract, licorice extract, comfrey extract, silk extract, thorns extract, yarrow extract, eucalyptus extract, melilot extract, etc. animal and plant extract components, natural ceramides (types 1, 2, 3, 4, 5, 6), hydroxyceramides, pseudoceramides, glycosphingolipids, ceramides, and ceramides such as glycoceramide-containing extracts; . Among these, as humectants (excluding the humectant of the present invention) and feel improvers, glycerin, 1,3-butylene glycol, propylene glycol, 3-methyl-1,3-butanediol, 1, 3-propanediol, 2-methyl-1,3-propanediol, trimethylolpropane, pentaerythritol, hexylene glycol, diglycerin, polyglycerin, diethylene glycol, polyethylene glycol, dipropylene glycol, polypropylene glycol, ethylene glycol/propylene glycol Polyols such as copolymers and polymers thereof; hyaluronic acid, sodium hyaluronate; more preferred are glycerin and hyaluronic acid.

Typical examples of hyaluronic acid include low molecular weight hyaluronic acid and high molecular weight hyaluronic acid.

The humectant of the present invention may be produced by any suitable method as long as the effects of the present invention are not impaired.

The humectant polymer of the present invention can be used in skin cosmetics, skin external preparations, or hair cosmetics. That is, the skin cosmetic, external skin preparation, or hair cosmetic of the present invention contains the humectant polymer of the present invention.

As a skin cosmetic, it may be employed in any suitable skin cosmetic to the extent that the effects of the present invention are not impaired. Such skin cosmetics include, for example, basic cosmetics; white powder/powder, foundation, base emulsion, cheek color, eyeliner, eyeshadow, mascara, lipstick, lip gloss, eyebrow ink, eyebrow, nail enamel, and enamel remover. , makeup cosmetics such as nail treatments; cleaning cosmetics such as cleansing creams, facial cleansing foams, and liquid facial cleansers; cosmetics such as sunscreen cosmetics (including quasi-drugs); bath cosmetics such as bath additives. ; Oral cosmetics such as toothpaste and mouthwash; Aromatic cosmetics such as perfume, perfume, parfum, eau de parfum, eau de toilette, eau de cologne, perfume paste, aromatic powder, perfume soap, body lotion, bath oil; Body cleansing such as body shampoo body cosmetics such as insect repellers such as insect repellent sprays; etc.

More specifically, the basic cosmetics include, for example, lotions such as softening lotion, astringent lotion, cleaning lotion, and multilayer lotion; emollient lotion, moisture lotion, milky lotion, nourishing lotion, and nari lotion; Emulsions such as Thing Milk, Skin Moisture, Moisture Emulsion, Massage Lotion, Cleansing Lotion, Protect Emulsion, Sun Protect, Sun Protector, UV Care Milk, Sun Screen, Makeup Lotion, Exfoliating Smoother, Elbow Lotion, Hand Lotion, Body Lotion; Emollients Cream, nourishing cream, nourishing cream, vanishing cream, moisture cream, night cream, massage cream, cleansing cream, makeup cream, base cream, pre-makeup cream, sunscreen cream, suntan cream, hair removal cream, deodorant cream, shaving cream , creams such as keratin softening creams; gels such as moisture gels; essences such as moisturizing essences, whitening essences, and UV protection essences; liposome cosmetics such as liposome serums and liposome lotions; peel-off packs, powder packs, washing packs, and oils. Packs and masks such as packs and cleansing masks; Facial cleansers such as cleansing foam, cleansing cream, cleansing milk, cleansing lotion, cleansing gel, cleansing oil, cleansing mask, wash powder, and facial cleansing powder; Toilet soap, transparent soap, medicated soap, Examples include soaps such as liquid soaps, shaving soaps, and synthetic cosmetic soaps.

As the skin external preparation, it may be employed in any suitable skin external preparation within the range that does not impair the effects of the present invention. Examples of such external skin preparations include external medicines such as liniments, lotions, and ointments.

Any suitable hair cosmetic may be used as long as the effects of the present invention are not impaired. Such hair cosmetics include, for example, shampoos such as oil shampoos, cream shampoos, conditioning shampoos, dandruff shampoos, hair coloring shampoos, and conditioner-integrated shampoos; conditioners, treatments, hair packs, color lotions, and split end coats. , permanent wave agent, straight perm agent, oxidative hair dye, hair bleach, hair color pre-treatment, hair color after-treatment, perm pre-treatment, perm after-treatment, hair manicure, hair tonic, hair growth agent, wax, spray, gel , mist, etc. Note that hair cosmetics exclude hair styling products.

The content ratio of the moisturizing polymer in the skin cosmetic, external skin preparation, or hair cosmetic of the present invention may be any suitable content ratio of the moisturizing polymer as long as the effect of the present invention is not impaired. obtain. The content ratio of such a humectant polymer is preferably 0.01% by mass to 10% by mass, more preferably 0.05% by mass to 5% by mass, based on 100% by mass of the moisturizer. .

The skin cosmetics, external skin preparations, or hair cosmetics of the present invention may contain any appropriate additive components within a range that does not impair the effects of the present invention. Such additive components include, for example, water, oily bases, humectants (excluding the humectants of the present invention), feel enhancers, surfactants, polymers, thickeners, gelling agents, solvents, and spraying agents. agents, antioxidants, reducing agents, oxidizing agents, preservatives, antibacterial agents, chelating agents, pH adjusters, acids, alkalis, powders, inorganic salts, ultraviolet absorbers, skin whitening agents, vitamins and their derivatives, Anti-inflammatory agents, anti-inflammatory agents, hair growth agents, blood circulation promoters, stimulants, hormones, anti-wrinkle agents, anti-aging agents, tightening agents, cooling agents, warming agents, wound healing promoters, irritation relievers, analgesics agents, cell activators, plant/animal/microbial extracts, antipruritic agents, exfoliating/dissolving agents, antiperspirants, refreshing agents, astringents, enzymes, nucleic acids, fragrances, pigments, coloring agents, dyes, pigments, etc. . The number of such additive components may be one, or two or more.

Examples of water include ordinary water, purified water, hard water, soft water, natural water, deep ocean water, electrolyzed alkaline ionized water, electrolyzed acidic ionized water, ionized water, cluster water, and the like.

Examples of oily bases include cetanol, myristyl alcohol, oleyl alcohol, lauryl alcohol, cetostearyl alcohol, stearyl alcohol, arachyl alcohol, behenyl alcohol, jojoba alcohol, chimyl alcohol, cerakyl alcohol, batyl alcohol, hexyldecanol, and isostearyl alcohol. Alcohol, higher alcohols such as 2-octyldodecanol and dimer diol; aralkyl alcohols and derivatives such as benzyl alcohol; lauric acid, myristic acid, palmitic acid, stearic acid, isostearic acid, behenic acid, undecylenic acid, 12-hydroxystearin Acid, palmitooleic acid, oleic acid, linoleic acid, linoleic acid, erucic acid, docosahexaenoic acid, eicosapentaenoic acid, isohexadecanoic acid, anteisoheneicosanoic acid, long chain branched fatty acid, dimer acid, hydrogenated dimer acid, etc. higher fatty acids and metal soaps such as their aluminum salts, calcium salts, magnesium salts, zinc salts, potassium salts, and nitrogen-containing derivatives such as amides; liquid paraffin (mineral oil), heavy liquid isoparaffin, light liquid isoparaffin , α-olefin oligomer, polyisobutene, hydrogenated polyisobutene, polybutene, squalane, olive-derived squalane, squalene, petrolatum, solid paraffin, and other carbons; candelilla wax, carnauba wax, rice wax, wood wax, beeswax, montan Waxes such as wax, ozokerite, ceresin, paraffin wax, microcrystalline wax, petrolatum, Fischer-Tropsch wax, polyethylene wax, ethylene-propylene copolymer; coconut oil, palm oil, palm kernel oil, safflower oil, olive oil, castor oil, Avocado oil, sesame oil, tea oil, evening primrose oil, wheat germ oil, macadamia nut oil, hazelnut oil, kukui nut oil, rosehip oil, meadowfoam oil, persic oil, tea tree oil, peppermint oil, corn oil, rapeseed oil, sunflower oil, Vegetable oils and fats such as wheat germ oil, linseed oil, cottonseed oil, soybean oil, peanut oil, rice bran oil, cacao butter, shea butter, hydrogenated coconut oil, hydrogenated castor oil, jojoba oil, hydrogenated jojoba oil; beef tallow, milk fat , animal fats and oils such as horse fat, egg yolk oil, mink oil, and turtle oil; animal waxes such as whale wax, lanolin, and orange roughy oil; liquid lanolin, reduced lanolin, adsorption-refined lanolin, acetic acid lanolin, acetic acid liquid Lanolin such as lanolin, hydroxylanolin, polyoxyethylene lanolin, lanolin fatty acid, hard lanolin fatty acid, lanolin alcohol, acetic acid lanolin alcohol, acetic acid (cetyl lanolyl) ester; lecithin, phosphatidylcholine, phosphatidylethanolamine, phosphatidylserine, phosphatidylglycerol, Sphingophospholipids such as phosphatidylinositol and sphingomyelin; phospholipids such as phosphatidic acid and lysolecithin; phospholipids such as hydrogenated soybean phospholipids, partially hydrogenated soybean phospholipids, hydrogenated egg yolk phospholipids, and partially hydrogenated egg yolk phospholipids; Derivatives; Sterols such as cholesterol, dihydrocholesterol, lanosterol, dihydrolanosterol, phytosterol, cholic acid; Sapogenins; Saponins; cholesteryl acetate, cholesteryl nonanoate, cholesteryl stearate, cholesteryl isostearate, cholesteryl oleate, N-lauroyl -L-Glutamate di(cholesteryl/behenyl/octyldodecyl), N-lauroyl-L-glutamate di(cholesteryl/octyldodecyl), N-lauroyl-L-glutamate di(phytosteryl/behenyl/octyldodecyl), N-lauroyl- Acyl sarcosine alkyl esters such as L-glutamate di(phytosteryl/octyldodecyl), N-lauroylsarcosine isopropyl, cholesteryl 12-hydroxystearate, macadamia nut oil fatty acid cholesteryl, macadamia nut oil fatty acid phytosteryl, phytosteryl isostearate, soft lanolin fatty acid cholesteryl, hard Sterol esters such as lanolin fatty acid cholesteryl, long-chain branched fatty acid cholesteryl, and long-chain α-hydroxy fatty acid cholesteryl; lipid complexes such as phospholipid-cholesterol complexes and phospholipid-phytosterol complexes; octyldodecyl myristate, hexyl myristate Decyl, octyldodecyl isostearate, cetyl palmitate, octyldodecyl palmitate, cetyl octoate, hexyldecyl octoate, isotridecyl isononanoate, isononyl isononanoate, octyl isononanoate, isotridecyl isononanoate, isodecyl neopentanoate, isotridecyl neopentanoate, neopentane Isostearyl acid, octyldodecyl neodecanoate, oleyl oleate, octyldodecyl oleate, octyldodecyl ricinoleate, octyldodecyl lanolin fatty acid, hexyldecyl dimethyloctanoate, octyldodecyl erucate, hydrogenated castor oil isostearate, ethyl oleate, avocado Ethyl oil fatty acid, isopropyl myristate, isopropyl palmitate, octyl palmitate, isopropyl isostearate, isopropyl lanolin fatty acid, diethyl sebatate, diisopropyl sebatate, dioctyl sebatate, diisopropyl adipate, dibutyl octyl sebatate, diisobutyl adipate, succinate Monoalcohol carboxylic acid esters such as dioctyl acid and triethyl citrate; oxyacid esters such as cetyl lactate, diisostearyl malate, and hydrogenated castor oil monoisostearate; glyceryl trioctanoate, glyceryl trioleate, triisostearic acid Glyceryl, glyceryl diisostearate, tri(caprylic acid/capric acid) glyceryl, tri(caprylic acid/capric acid/myristic acid/stearic acid) glyceryl, hydrogenated rosin triglyceride (hydrogenated ester gum), rosin triglyceride (ester gum), Glyceryl eicosandioate behenate, trimethylolpropane trioctanoate, trimethylolpropane triisostearate, neopentyl glycol dioctoate, neopentyl glycol dicaprate, 2-butyl-2-ethyl-1,3-propanediol dioctoate, diolein Propylene glycol acid, pentaerythrityl tetraoctoate, hydrogenated rosin pentaerythrityl, ditrimethylolpropane triethylhexanoate, ditrimethylolpropane (isostearic acid/sebacic acid), pentaerythrityl triethylhexanoate, (hydroxystearic acid/stearic acid) /rosin acid) dipentaerythrityl, diglyceryl diisostearate, polyglyceryl tetraisostearate, polyglyceryl nonaisostearate-10, deca(erucic acid/isostearic acid/ricinoleic acid) polyglyceryl-8, (hexyldecanoic acid/sebacic acid) diglyceryl oligoester, Polyhydric alcohol fatty acid esters such as glycol distearate (ethylene glycol distearate); diisopropyl dimer dilinoleate, diisostearyl dimer dilinoleate, di(isostearyl/phytosteryl) dimer dilinoleate, dimer dilinoleate (phytosteryl) /behenyl), dimer dilinoleic acid (phytosteryl/isostearyl/cetyl/stearyl/behenyl), dimer dilinoleyl dimer dilinoleate, dimer dilinoleyl diisostearate, dimer dilinoleyl hydrogenated rosin condensate, dimer dilinole Derivatives of dimer acids or dimer diols such as acid-hardened castor oil, hydroxyalkyl dimer dilinoleyl ether; coconut oil fatty acid monoethanolamide (cocamide MEA), coconut oil fatty acid diethanolamide (cocamide DEA), lauric acid monoethanolamide (lauramide) MEA), lauric acid diethanolamide (Lauramide DEA), lauric acid monoisopropanolamide (Lauramide MIPA), palmitic acid monoethanolamide (Palutamide MEA), palmitic acid diethanolamide (Palutamide DEA), coconut oil fatty acid methylethanolamide (cocamide methyl MEA) ); fatty acid alkanolamides such as dimethicone (dimethylpolysiloxane), highly polymerized dimethicone (highly polymerized dimethylpolysiloxane), cyclomethicone (cyclic dimethylsiloxane, decamethylcyclopentasiloxane), phenyl trimethicone, diphenyl dimethicone, phenyl dimethicone, Stearoxypropyl dimethylamine, (aminoethylaminopropyl methicone/dimethicone) copolymer, dimethiconol, dimethiconol crosspolymer, silicone resin, silicone rubber, amino-modified silicone such as aminopropyl dimethicone and amodimethicone, cation-modified silicone, dimethicone copolyol, etc. Polyether-modified silicone, polyglycerin-modified silicone, sugar-modified silicone, carboxylic acid-modified silicone, phosphoric acid-modified silicone, sulfuric acid-modified silicone, alkyl-modified silicone, fatty acid-modified silicone, alkyl ether-modified silicone, amino acid-modified silicone, peptide-modified silicone, fluorine Silicones such as modified silicones, cation-modified and polyether-modified silicones, amino-modified and polyether-modified silicones, alkyl-modified and polyether-modified silicones, polysiloxane-oxyalkylene copolymers; perfluorodecane, perfluorooctane, perfluoro Examples include fluorine-based oils such as polyether.

As the humectant (excluding the humectant of the present invention) and the feel improver, the description of the humectant (excluding the humectant of the present invention) and the feel improver that can be included in the humectant of the present invention described above can be directly cited. obtain.

Examples of the surfactant include anionic surfactants, nonionic surfactants, cationic surfactants, amphoteric surfactants, polymer surfactants, and the like. The HLB of the surfactant typically ranges from a low HLB of about 1 to a high HLB of about 20, and surfactants with a low HLB and those with a high HLB may be combined.

Examples of anionic surfactants include fatty acid salts such as potassium laurate and potassium myristate; alkyl sulfate ester salts such as sodium lauryl sulfate, triethanolamine lauryl sulfate, and ammonium lauryl sulfate; sodium laureth sulfate and triethanol laureth sulfate. Polyoxyethylene alkyl sulfates such as amines; sodium cocoyl methyl taurate, potassium cocoyl methyl taurate, sodium lauroyl methyl taurate, sodium myristoyl methyl taurate, sodium lauroyl methyl alanine, sodium lauroyl sarcosine, triethanolamine lauroyl sarcosine, sodium methyl alanine lauroyl glutamate. Acyl N-methyl amino acid salts such as sodium cocoyl glutamate, triethanolamine cocoyl glutamate, sodium lauroyl glutamate, sodium myristoyl glutamate, sodium stearoyl glutamate, ditriethanolamine palmitoyl aspartate, cocoyl alanine triethanolamine, etc.; laureth Polyoxyethylene alkyl ether acetate such as sodium acetate; Succinic acid ester salt such as sodium lauroyl monoethanolamide succinate; Fatty acid alkanolamide ether carboxylate; Acyl lactate; Polyoxyethylene fatty amine sulfate; Fatty acid alkanolamide sulfate Salt; Fatty acid glyceride sulfate such as hydrogenated coconut oil fatty acid glycerin sodium sulfate; Alkylbenzene polyoxyethylene sulfate; Olefin sulfonate such as sodium α-olefin sulfonate; Alkyl sulfosuccinate such as disodium lauryl sulfosuccinate, dioctyl sodium sulfosuccinate, etc. Acid salts: Alkyl ether sulfosuccinates such as disodium laureth sulfosuccinate, monolauroyl monoethanolamide polyoxyethylene sodium sulfosuccinate, sodium lauryl polypropylene glycol sulfosuccinate; sodium tetradecylbenzenesulfonate, triethanolamine tetradecylbenzenesulfonate Alkylbenzene sulfonates such as; alkylnaphthalene sulfonates; alkanesulfonates; α-sulfo fatty acid methyl ester salts; acyl isethionates; alkyl glycidyl ether sulfonates; alkyl sulfoacetates; sodium laureth phosphate, sodium dilaureth phosphate, Alkyl ether phosphate ester salts such as sodium trilaureth phosphate and sodium monooleth phosphate; Alkyl phosphate ester salts such as potassium lauryl phosphate; sodium caseinate; alkylaryl ether phosphate; fatty acid amide ether phosphate; phosphatidylglycerol; Examples include phospholipids such as phosphatidylinositol and phosphatidic acid; silicone-based anionic surfactants such as carboxylic acid-modified silicones, phosphoric acid-modified silicones, and sulfuric acid-modified silicones; and the like.

Examples of nonionic surfactants include laureth (polyoxyethylene lauryl ether), ceteth (polyoxyethylene cetyl ether), steareth (polyoxyethylene stearyl ether), behenes (polyoxyethylene behenyl ether), Polyoxyethylene alkyl ethers with various polyoxyethylene addition numbers such as isosteareth (polyoxyethylene isostearyl ether) and octyl dodeceth (polyoxyethylene octyl dodecyl ether); polyoxyethylene alkylphenyl ether; polyoxyethylene hardened castor oil, polyoxyethylene castor oil, polyoxyethylene hydrogenated castor oil monoisostearate, polyoxyethylene hydrogenated castor oil triisostearate, polyoxyethylene hydrogenated castor oil monopyroglutamic acid monoisostearate diester, polyoxyethylene hydrogenated castor oil Castor oil and hydrogenated castor oil derivatives such as maleic acid; polyoxyethylene phytosterol; polyoxyethylene cholesterol; polyoxyethylene cholestanol; polyoxyethylene lanolin; polyoxyethylene reduced lanolin; polyoxyethylene/polyoxypropylene cetyl ether; Polyoxyethylene/polyoxyethylene/polyoxyethylene/polyoxypropylene 2-decyltetradecyl ether, polyoxyethylene/polyoxypropylene monobutyl ether, polyoxyethylene/polyoxypropylene hydrogenated lanolin, polyoxyethylene/polyoxypropylene glycerin ether, etc. Oxypropylene alkyl ether; polyoxyethylene polyoxypropylene glycol; (poly)glycerin polyoxypropylene glycol such as PPG-9 diglyceryl; glyceryl stearate, glyceryl isostearate, glyceryl palmitate, glyceryl myristate, glyceryl oleate, Glycerin fatty acid partial esters such as coconut oil fatty acid glyceryl, monocottonseed oil fatty acid glycerin, monoerucic acid glycerin, sesquioleic acid glycerin, α, α'-oleic acid pyroglutamate glycerin, monostearate glycerin malic acid; polyglyceryl stearate-2; Same 3, Same 4, Same 5, Same 6, Same 8, Same 10, Polyglyceryl distearate-6, Same 10, Polyglyceryl tristearate-2, Polyglyceryl decastearate-10, Polyglyceryl isostearate-2, Same 3, Same 4, Same 5, Same 6, Same 8, Same 10, Polyglyceryl diisostearate-2 (diglyceryl diisostearate), Same 3, Same 10, Polyglyceryl triisostearate-2, Polyglyceryl tetraisostearate-2, Decaisostearic acid Polyglyceryl-10, polyglyceryl-10, polyglyceryl-3, 4, 5, 6, 8, 10, polyglyceryl-6 dioleate, polyglyceryl-2 trioleate, polyglyceryl-10 decaoleate, etc. Fatty acid ester; ethylene glycol monofatty acid ester such as ethylene glycol monostearate; propylene glycol monofatty acid ester such as propylene glycol monostearate; pentaerythritol partial fatty acid ester; sorbitol partial fatty acid ester; maltitol partial fatty acid ester; maltitol ether; Sorbitan monooleate, sorbitan monoisostearate, sorbitan monolaurate, sorbitan monopalmitate, sorbitan monostearate, sorbitan sesquioleate, sorbitan trioleate, diglycerol pent-2-ethylhexylate, sorbitan, tetra-2-ethylhexyl Sorbitan fatty acid esters such as acid diglycerol sorbitan; sugar derivative partial esters such as sucrose fatty acid esters, methyl glucoside fatty acid esters, and trehalose undecylenate; alkyl glucosides such as caprylyl glucoside; alkyl polyglycosides; lanolin alcohol; reduced lanolin; polyoxy Polyoxyethylene fatty acid mono and diesters such as ethylene distearate, polyethylene glycol diisostearate, polyoxyethylene monooleate, polyoxyethylene dioleate; polyoxyethylene propylene glycol fatty acid ester; polyoxyethylene glycerin mono Polyoxyethylene glycerin fatty acid esters such as polyoxyethylene monooleate such as stearate, polyoxyethylene glycerin monoisostearate, polyoxyethylene glycerin triisostearate; polyoxyethylene sorbitan monooleate, polyoxyethylene sorbitan mono Polyoxyethylene sorbitan fatty acid esters such as stearate, polyoxyethylene sorbitan monooleate, polyoxyethylene sorbitan tetraoleate; polyoxyethylene sorbitol monolaurate, polyoxyethylene sorbitol monooleate, polyoxyethylene sorbitol pentaoleate, Polyoxyethylene sorbitol fatty acid esters such as polyoxyethylene sorbitol monostearate; polyoxyethylene methyl glucoside fatty acid esters; polyoxyethylene alkyl ether fatty acid esters; polyoxyethylene animal and vegetable oils and fats such as polyoxyethylene sorbitol beeswax; isostearyl glyceryl ether , alkyl glyceryl ethers such as chimyl alcohol, serakyl alcohol, and batyl alcohol; polyhydric alcohol alkyl ethers; polyoxyethylene alkyl amines; tetrapolyoxyethylene/tetrapolyoxypropylene-ethylenediamine condensates; saponins, sophorolipids, etc. Natural surfactants; polyoxyethylene fatty acid amide; coconut oil fatty acid monoethanolamide (cocamide MEA), coconut oil fatty acid diethanolamide (cocamide DEA), lauric acid monoethanolamide (Lauramide MEA), lauric acid diethanolamide (Lauramide DEA) ), fatty acid alkanolamides such as lauric acid monoisopropanolamide (lauramide MIPA), palmitic acid monoethanolamide (palutamide MEA), palmitic acid diethanolamide (palutamide DEA), coconut oil fatty acid methylethanolamide (cocamide methyl MEA); lauramine Alkyldimethylamine oxide such as oxide, cocamine oxide, stearamine oxide, behenamine oxide; Alkylethoxydimethylamine oxide; Polyoxyethylene alkylmercaptan; Polyether-modified silicone such as dimethicone copolyol, polysiloxane/oxyalkylene copolymer silicone-based nonionic surfactants such as polyglycerin-modified silicones, sugar-modified silicones, and the like.

Examples of the cationic surfactant include alkyltrimethylammonium chlorides such as behentrimonium chloride, steartrimonium chloride, cetrimonium chloride, and lauryltrimonium chloride; alkyltrimethylammonium bromides such as stearyltrimonium bromide; distearylditrimonium chloride; Dialkyldimethylammonium chlorides such as monium chloride and dicocodimonium chloride; fatty acid amide amines and their salts such as stearamidepropyldimethylamine and stearamideethyldiethylamine; alkyl ether amines and their salts or quaternary salts such as stearoxypropyldimethylamine; Ethyl sulfate long chain branched fatty acids (12-31) Fatty acid amide type quaternary ammonium salts such as aminopropylethyl dimethyl ammonium, ethyl sulfate lanolin fatty acid aminopropylethyl dimethyl ammonium; polyoxyethylene alkylamine and its salts or quaternary salts; alkyl Amine salts; fatty acid amide guanidium salts; alkyl ether amine monoium salts; alkyltrialkylene glycol ammonium salts; benzalkonium salts; benzethonium salts; pyridinium salts such as cetylpyridinium chloride; imidazolinium salts; alkylisoquinolinium salts ; dialkylmorphonium salts; polyamine fatty acid derivatives; silicone-based cationic interfaces such as amino-modified silicones such as aminopropyl dimethicone and amodimethicone, cation-modified silicones, cation-modified and polyether-modified silicones, amino-modified and polyether-modified silicones; Activators; and the like.

Examples of amphoteric surfactants include N-alkyl-N,N-dimethylamino acid betaines such as lauryl betaine (lauryl dimethylaminoacetic acid betaine); fatty acid amide alkyl-N,N such as cocamidopropyl betaine and lauramide propyl betaine; - Dimethylamino acid betaine; imidazoline type betaine such as sodium cocoamphoacetate and sodium lauroamphoacetate; alkyl sulfobetaine such as alkyldimethyltaurine; sulfuric acid type betaine such as alkyldimethylaminoethanol sulfate ester; phosphoric acid such as alkyldimethylaminoethanol phosphate ester Type betaine; sphingophospholipids such as phosphatidylcholine, phosphatidylethanolamine, phosphatidylserine, sphingomyelin, lysolecithin, hydrogenated soybean phospholipids, partially hydrogenated soybean phospholipids, hydrogenated egg yolk phospholipids, partially hydrogenated egg yolk phospholipids, hydroxylated Examples include phospholipids such as lecithin; silicone-based amphoteric surfactants; and the like.

Examples of the polymeric surfactant include polyvinyl alcohol, sodium alginate, starch derivatives, gum tragacanth, acrylic acid/alkyl methacrylate copolymer, and various silicone-based surfactants.

Examples of polymers, thickeners, and gelling agents include guar gum, locust bean gum, queen seed, carrageenan, galactan, gum arabic, tara gum, tamarind, farcellan, gum karaya, molasses, carra gum, gum tragacanth, pectin, and pectin. Acids and salts such as their sodium salts, alginic acid and salts such as their sodium salts, mannan; Starches such as rice, corn, potato, wheat, etc.; xanthan gum, dextran, succinoglucan, curdlan, hyaluronic acid and its salts, xanthan gum, Pullulan, gellan gum, chitin, chitosan, agar, cassow extract, chondroitin sulfate, casein, collagen, gelatin, albumin; methylcellulose, ethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, carboxymethylcellulose and its salts such as sodium, methylhydroxypropylcellulose, cellulose Cellulose and its derivatives such as sodium sulfate, dialkyldimethylammonium cellulose sulfate, crystalline cellulose, and cellulose powder; starch-based polymers such as soluble starch, carboxymethyl starch, methylhydroxypropyl starch, and methyl starch, hydroxypropyltrimonium chloride starch, and octenyl succinate Starch derivatives such as acid corn starch aluminum; Alginic acid derivatives such as sodium alginate and propylene glycol alginate ester; polyvinyl pyridone (PVP), polyvinyl alcohol (PVA), vinyl pyridone/vinyl alcohol copolymer, polyvinyl methyl ether; polyethylene glycol, polypropylene glycol , polyoxyethylene/polyoxypropylene copolymers; amphoteric methacrylate ester copolymers such as (methacryloyloxyethylcarboxybetaine/alkyl methacrylate) copolymers, (acrylates/stearyl acrylate/ethylamine oxide methacrylate) copolymers; (dimethicone) /vinyl dimethicone) crosspolymer, (alkyl acrylate/diacetone acrylamide) copolymer, (alkyl acrylate/diacetone acrylamide) copolymer AMP; partially saponified polyvinyl acetate, maleic acid copolymer; vinylpyrrolidone/dialkylamino methacrylate Alkyl copolymer; acrylic resin alkanolamine; polyester, water-dispersible polyester; polyacrylamide; polyacrylic acid ester copolymer such as polyethyl acrylate, carboxyvinyl polymer, polyacrylic acid and salts such as its sodium salt, acrylic Acid/methacrylic acid ester copolymer; acrylic acid/alkyl methacrylate copolymer; cationized cellulose such as polyquaternium-10, diallyldimethylammonium chloride/acrylamide copolymer such as polyquaternium-7, polyquaternium-22, etc. Acrylic acid/diallyldimethylammonium chloride copolymer, polyquaternium-39 and other acrylic acid/diallyldimethylammonium chloride/acrylamide copolymers, acrylic acid/cationized methacrylic acid ester copolymer, acrylic acid/cationized methacrylic acid Amide copolymer, acrylic acid/methyl acrylate/methacrylamidopropyltrimethylammonium chloride copolymer such as polyquaternium-47, methacrylic acid chloride choline ester polymer; cationized oligosaccharide, cationized dextran, guar hydroxypropyltrimonium chloride cationic polysaccharides such as; polyethyleneimine; cationic polymers; copolymers of 2-methacryloyloxyethylphosphorylcholine such as polyquaternium-51 and butyl methacrylate copolymers; acrylic resin emulsions, polyethyl acrylate emulsions , polyacrylic alkyl ester emulsions, polyvinyl acetate resin emulsions, natural rubber latex, synthetic latex, and other polymer emulsions; nitrocellulose; polyurethanes and various copolymers; various silicones; silicones such as acrylic-silicone graft copolymers; various fluorinated polymers; 12-hydroxystearic acid and its salts; dextrin fatty acid esters such as dextrin palmitate and dextrin myristate; silicic anhydride, fumed silica (ultrafine silicic anhydride), silica Examples include aluminum magnesium acid, sodium magnesium silicate, metal soap, dialkyl phosphate metal salt, bentonite, hectorite, organically modified clay mineral, sucrose fatty acid ester, fructooligosaccharide fatty acid ester.

Examples of solvents and propellants include lower alcohols such as ethanol, 2-propanol (isopropyl alcohol), butanol, and isobutyl alcohol; propylene glycol, 1,3-butylene glycol, diethylene glycol, dipropylene glycol, isopentyl diol, etc. Glycols; diethylene glycol monoethyl ether (ethoxy diglycol), ethylene glycol monoethyl ether, ethylene glycol monobutyl ether, triethylene glycol monoethyl ether, diethylene glycol diethyl ether, diethylene glycol dibutyl ether, propylene glycol monoethyl ether, dipropylene glycol mono Glycol ethers such as ethyl ether; glycol ether esters such as ethylene glycol monoethyl ether acetate, diethylene glycol monoethyl ether acetate, propylene glycol monoethyl ether acetate; glycol esters such as diethoxyethyl succinate, ethylene glycol disuccinate, etc. benzyl alcohol, benzyloxyethanol, propylene carbonate, dialkyl carbonate, acetone, ethyl acetate, N-methylpyrrolidone; toluene; fluorocarbons, next-generation fluorocarbons; propellants such as LPG, dimethyl ether, and carbon dioxide; and the like.

Examples of antioxidants include tocopherol derivatives such as tocopherol (vitamin E) and tocopherol acetate; BHT, BHA; gallic acid derivatives such as propyl gallate; vitamin C (ascorbic acid) and its derivatives; erythorbic acid and its derivatives; Sulfites such as sodium sulfite; bisulfites such as sodium bisulfite; thiosulfates such as sodium thiosulfate; metabisulfites; thiotaurine, hypotaurine; thioglycerol, thiourea, thioglycolic acid, cysteine hydrochloride; etc. Can be mentioned.

Examples of the reducing agent include thioglycolic acid, cysteine, and cysteamine.

Examples of the oxidizing agent include hydrogen peroxide, ammonium persulfate, sodium bromate, and percarbonate.

Examples of preservatives and antibacterial agents include hydroxybenzoic acid and its salts or esters such as methylparaben, ethylparaben, propylparaben, butylparaben; salicylic acid; sodium benzoate; phenoxyethanol; 1,2-pentanediol, 1,2 -1,2-diols such as hexanediol; isothiazolinone derivatives such as methylchloroisothiazolinone and methylisothiazolinone; imidazolinium urea; dehydroacetic acid and its salts; phenols; halogenated bisphenols such as triclosan, acids Amides, quaternary ammonium salts; trichlorocarbanide, zinc pyrithione, benzalkonium chloride, benzethonium chloride, sorbic acid, chlorhexidine, chlorhexidine gluconate, halocarban, hexachlorophene, hinokitiol; phenol, isopropylphenol, cresol, thymol, parachloro Examples include other phenols such as phenol, phenylphenol, and sodium phenylphenol; phenylethyl alcohol, photosensitizers, antibacterial zeolite, and silver ions.

Examples of chelating agents include edetate salts (ethylenediaminetetraacetate) such as EDTA, EDTA2Na, EDTA3Na, and EDTA4Na; hydroxyethylethylenediamine triacetate such as HEDTA3Na; pentetate salts (diethylenetriaminepentaacetate); phytic acid; etidrone. Phosphonic acids such as acids and their salts such as sodium salts; Sodium oxalate; Polypolyamino acids such as polyaspartic acid and polyglutamic acid; Sodium polyphosphate, sodium metaphosphate, phosphoric acid; Sodium citrate, citric acid, alanine, dihydroxy Examples include ethylglycine, gluconic acid, ascorbic acid, succinic acid, and tartaric acid.

Examples of pH adjusters, acids, and alkalis include citric acid, sodium citrate, lactic acid, sodium lactate, glycolic acid, succinic acid, acetic acid, sodium acetate, malic acid, tartaric acid, fumaric acid, phosphoric acid, hydrochloric acid, and sulfuric acid. , monoethanolamine, diethanolamine, triethanolamine, isopropanolamine, triisopropanolamine, 2-amino-2-methyl-1,3-propanediol, 2-amino-2-hydroxymethyl-1,3-propanediol, arginine , sodium hydroxide, potassium hydroxide, aqueous ammonia, guanidine carbonate, ammonium carbonate, and the like.

Examples of powders include mica, talc, kaolin, sericite, montmorillonite, kaolinite, mica, muscovite, phlogopite, synthetic mica, rhodochite, biotite, permiculite, magnesium carbonate, calcium carbonate, and aluminum silicate. , barium silicate, calcium silicate, magnesium silicate, strontium silicate, metal tungstate, magnesium, zeolite, barium sulfate, calcined calcium sulfate, calcium phosphate, fluoroapatite, hydroxyapatite, ceramic powder, bentonite, smectite, clay, mud, metallic soaps (e.g. zinc myristate, calcium palmitate, aluminum stearate), calcium carbonate, red iron oxide, yellow iron oxide, black iron oxide, ultramarine, deep blue, carbon black, titanium oxide, fine and ultrafine titanium oxide, Zinc oxide, fine and ultrafine particle zinc oxide, alumina, silica, fumed silica (ultrafine silicic acid anhydride), mica titanium, fish scale foil, boron nitride, photochromic pigment, synthetic fluorophlogopite, fine particle composite powder, gold, Inorganic powders of various sizes and shapes such as aluminum, and these are treated with silicones such as hydrogen silicone, cyclic hydrogen silicone, other silanes, or various surface treatment agents such as titanium coupling agents to make them hydrophobic. Inorganic powders such as powders that have been modified or hydrophilized; starch, cellulose, nylon powder, polyethylene powder, polymethyl methacrylate powder, polystyrene powder, styrene and acrylic acid copolymer resin powder, polyester powder, benzoguanamine resin powder, Organic powders of various sizes and shapes such as polyethylene terephthalate/polymethyl methacrylate laminated powder, polyethylene terephthalate/aluminum/epoxy laminated powder, urethane powder, silicone powder, Teflon (registered trademark) powder, surface-treated powder, and organic-inorganic composite powder; and the like.

Examples of inorganic salts include sodium chloride-containing salts such as common salt, normal salt, rock salt, sea salt, and natural salt; potassium chloride, aluminum chloride, calcium chloride, magnesium chloride, bittern, zinc chloride, ammonium chloride; sodium sulfate, sulfuric acid. Aluminum, potassium aluminum sulfate (alum), ammonium aluminum sulfate, barium sulfate, calcium sulfate, potassium sulfate, magnesium sulfate, zinc sulfate, iron sulfate, copper sulfate; sodium phosphates such as 1Na, 2Na, and 3Na phosphate; Examples include potassium phosphates, calcium phosphates, and magnesium phosphates.

Examples of the ultraviolet absorber include para-aminobenzoic acid, para-aminobenzoic acid monoglycerin ester, N,N-dipropoxypara-aminobenzoic acid ethyl ester, N,N-diethoxypara-aminobenzoic acid ethyl ester, and N,N-dimethyl para-aminobenzoic acid. Benzoic acid-based UV absorbers such as acid ethyl ester, N,N-dimethylpara-aminobenzoic acid butyl ester, N,N-dimethylpara-aminobenzoic acid ethyl ester; anthranilic acid-based UV absorbers such as homomenthyl-N-acetylanthranilate. ; Salicylic acid-based UV absorbers such as salicylic acid and its sodium salt, amyl salicylate, menthyl salicylate, homomenthyl salicylate, octyl salicylate, phenyl salicylate, benzyl salicylate, p-isopropanol phenyl salicylate; octyl cinnamate, ethyl-4-isopropyl cinnamate , methyl-2,5-diisopropylcinnamate, ethyl-2,4-diisopropylcinnamate, methyl-2,4-diisopropylcinnamate, propyl-p-methoxycinnamate, isopropyl-p-methoxycinnamate, isoamyl-p -Methoxycinnamate, 2-ethylhexyl p-methoxycinnamate (octyl para-methoxycinnamate), 2-ethoxyethyl-p-methoxycinnamate (cinoxate), cyclohexyl-p-methoxycinnamate, ethyl-α-cyano-β - Cinnamic acid UV absorbers such as phenylcinnamate, 2-ethylhexyl α-cyano-β-phenylcinnamate (octocrine), glyceryl mono-2-ethylhexanoyl-diparamethoxycinnamate, ferulic acid and its derivatives; 2,4-dihydroxybenzophenone, 2,2'-dihydroxy-4-methoxybenzophenone, 2,2'-dihydroxy-4,4'-dimethoxybenzophenone, 2,2',4,4'-tetrahydroxybenzophenone, 2- Hydroxy-4-methoxybenzophenone (oxybenzone-3), 2-hydroxy-4-methoxy-4'-methylbenzophenone, 2-hydroxy-4-methoxybenzophenone-5-sulfonate, 4-phenylbenzophenone, 2-ethylhexyl- Benzophenone UV absorbers such as 4'-phenyl-benzophenone-2-carboxylate, 2-hydroxy-4-n-octoxybenzophenone, 4-hydroxy-3-carboxybenzophenone; 3-(4'-methylbenzylidene)- d,l-camphor, 3-benzylidene-d,l-camphor; 2-phenyl-5-methylbenzoxazole; 2,2'-hydroxy-5-methylphenylbenzotriazole; 2-(2'-hydroxy-5 '-t-octylphenyl)benzotriazole; 2-(2'-hydroxy-5'-methylphenylbenzotriazole; dibenzalazine; dianisoylmethane; 5-(3,3-dimethyl-2-norbornylidene)-3-pentane- 2-one; dibenzoylmethane derivatives such as 4-t-butylmethoxydibenzoylmethane; octyltriazone; urocanic acid derivatives such as urocanic acid and ethyl urocanate; 2-(2'-hydroxy-5'-methylphenyl) Hydantoin derivatives such as benzotriazole, 1-(3,4-dimethoxyphenyl)-4,4-dimethyl-1,3-pentanedione, dimethoxybenzylidene dioxoimidazolidine 2-ethylhexyl propionate, phenylbenzimidazole sulfonic acid , terephthalylidene dicanfursulfonic acid, drometrizole trisiloxane, methyl anthranilate, rutin and its derivatives, oryzanol and its derivatives; and the like.

Examples of whitening agents include hydroquinone glycosides and their esters such as arbutin and α-arbutin; ascorbic acid, ascorbic acid phosphate salts such as ascorbic acid phosphate sodium salt and ascorbic acid phosphate magnesium salt; Ascorbic acid fatty acid esters such as ascorbic acid tetraisopalmitate ester, ascorbic acid alkyl ethers such as ascorbic acid ethyl ether, ascorbic acid glucosides such as ascorbic acid-2-glucoside and their fatty acid esters, ascorbic acid sulfate esters, phosphoric acid tocoesters, etc. Ascorbic acid derivatives such as feryl ascorbyl; kojic acid, ellagic acid, tranexamic acid and its derivatives, ferulic acid and its derivatives, placenta extract, glutathione, oryzanol, butylresorcinol, oil-soluble chamomilla extract, oil-soluble licorice extract, Nishiheliana extract, Plant extracts such as saxifrage extract; and the like.

Examples of vitamins and derivatives thereof include vitamin A such as retinol, retinol acetate, and retinol palmitate; thiamine hydrochloride, thiamine sulfate, riboflavin, riboflavin acetate, pyridoxine hydrochloride, pyridoxine dioctanoate, and pyridoxine dipalmi. B group vitamins such as tate, flavin adenine dinucleotide, cyanocobalamin, folic acids, nicotinic acids such as nicotinamide and benzyl nicotinate, and choline; vitamin C such as ascorbic acid and its salts such as sodium; vitamin D; Vitamin E such as α, β, γ, δ-tocopherol; Other vitamins such as pantothenic acid and biotin; ascorbic acid phosphate salts such as ascorbic acid phosphate sodium salt and ascorbic acid phosphate magnesium salt, ascorbic acid Ascorbic acid fatty acid esters such as acid tetraisopalmitate, ascorbyl stearate, ascorbyl palmitate, ascorbyl dipalmitate, ascorbic acid alkyl ethers such as ascorbic acid ethyl ether, ascorbic acid glucosides such as ascorbic acid-2-glucoside, and their like. Fatty acid esters, ascorbic acid derivatives such as tocopheryl ascorbyl phosphate; vitamin derivatives such as tocopherol derivatives such as tocopherol nicotinate, tocopherol acetate, tocopherol linoleate, tocopherol ferulate, tocopherol phosphate, tocotrienols, and other various vitamin derivatives; Examples include.

Anti-inflammatory agents and anti-inflammatory agents include, for example, glycyrrhizic acid and its derivatives, glycyrrhetinic acid derivatives, salicylic acid derivatives, hinokitiol, guaiazulene, allantoin, indomethacin, zinc oxide, hydrocortisone acetate, prednisone, dipedramine hydrochloride, chlorpheniramine maleate; Plant extracts such as peach leaf extract and mugwort leaf extract; and the like.

Hair growth drugs, blood circulation promoters, and stimulants include, for example, plant extracts and tinctures such as Jasperum japonica extract, capsicum tincture, ginger tincture, ginger extract, and cantharis tincture; capsaicin, nonylic acid valenylamide, zingerone, and ictamol. , tannic acid, borneol, cyclanderate, cinnarizine, tolazoline, acetylcholine, verapamil, cephalanthine, γ-oryzanol, cephalanthine, vitamin E and derivatives such as tocopherol nicotinate and tocopherol acetate, γ-oryzanol, nicotinic acid and nicotinamide. Nicotinic acid benzyl ester/inositol hexanicotinate, derivatives such as nicotine alcohol, allantoin, photosensor 301, photosensor 401, capronium chloride, pentadecanoic acid monoglyceride, flavanonol derivatives, stigmasterol or stigmastanol and its glycosides, minoxidil Examples include.

Hormones include estradiol, estrone, ethinyl estradiol, cortisone, hydrocortisone, prednisone, and the like.

Other medicinal agents such as anti-wrinkle agents, anti-aging agents, tightening agents, cooling agents, warming agents, wound healing promoters, irritation relievers, analgesics, cell activators, etc. include retinols, retinoic acids, etc. , tocopheryl retinoate; derivatives such as lactic acid, glycolic acid, gluconic acid, fruit acid, salicylic acid and their glycosides and esters, hydroxycapric acid, long-chain α-hydroxy fatty acids, long-chain α-hydroxy fatty acids such as cholesteryl, etc. - or β-hydroxy acids and their derivatives; γ-aminobutyric acid, γ-amino-β-hydroxybutyric acid; carnitine; creatine; ceramides, sphingosines; caffeine, xanthine, etc. and their derivatives; coenzyme Q10, carotene, lycopene , astaxanthin, α-lipoic acid, etc.; catechins; flavones such as quercetin; isoflavones; gallic acid and ester sugar derivatives; tannins, sesamin, protoanthocyanidins, chlorogenic acid, apple polyphenols, etc. Polyphenols; derivatives such as rutin and glycosides; derivatives such as hesperidin and glycosides; lignan glycosides; substances related to licorice extract such as glabridin, glabrene, liquiritin, isoliquiritin; lactoferrin; gingerol, gingerol; menthol, camphor , fragrance substances such as cedrol, and derivatives thereof; capsaicin, vanillin, etc. and derivatives; insect repellents such as diethyltoluamide; complexes of physiologically active substances and cyclodextrins; and the like.

Examples of plant/animal/microbial extracts include iris extract, Ashitaba extract, Asunaro extract, asparagus extract, avocado extract, amacha extract, almond extract, Althea extract, arnica extract, aloe extract, apricot extract, apricot kernel extract, and ginkgo biloba. extract, fenugreek extract, fennel extract, turmeric extract, oolong tea extract, urticaria extract, edulis extract, echidna leaf extract, japonica extract, scutellariae extract, scutellariae extract, fennel extract, barley extract, panax ginseng extract, hypericum extract, deadlock root extract, ononis extract, mustard extract, orange extract, dried seawater, seaweed extract, persimmon leaf extract, kakkyoku extract, hydrolyzed elastin, hydrolyzed wheat powder, hydrolyzed silk, cuckoo extract, chamomilla extract, oil-soluble chamomilla extract, carot extract, Kawara mugwort extract, oat extract, karkade extract, licorice extract, oil-soluble licorice extract, kiwi extract, kiosk extract, wood ear extract, cinchona extract, cucumber extract, thorn leaf extract, guanosine, guava extract, kujin extract, gardenia extract, kumata extract, clara extract, Walnut extract, chestnut extract, grapefruit extract, clematis extract, black rice extract, brown sugar extract, black vinegar, chlorella extract, mulberry extract, gentian extract, gennoshoko extract, black tea extract, yeast extract, kobo extract, coffee extract, burdock extract, rice extract, Fermented rice extract, fermented rice bran extract, rice germ oil, comfrey extract, collagen, lingonberry extract, saicin extract, saicin extract, saicin extract, saffron extract, salvia extract, soapwort extract, bamboo grass extract, hawthorn extract, sasanya extract, sasan Showa extract, shiitake extract, rhododendron extract, rhododendron extract, perilla extract, linden extract, meadowsweet extract, jatoba extract, peony extract, calamus extract, calamus root extract, white birch extract, white fungus extract, horsetail extract, stevia extract, stevia fermentation product, sahe willow extract , Hawthorn extract, Hawthorn extract, Sambucus extract, Yarrow extract, Mentha extract, Sage extract, Mallow extract, Nebula extract, Japanese cabbage extract, Hawthorn extract, Rhubarb extract, Soybean extract, Taishu extract, Thyme extract, Dandelion extract, Lichen extract, tea extract, clove extract, Chigaya extract, chimpi extract, tea tree oil, sweet tea extract, capsicum extract, Japanese ginger extract, Calendula extract, Japanese horseradish extract, spruce extract, Dokudami extract, tomato extract, natto extract, carrot extract, garlic extract, Nova rose extract, hibiscus extract, bacterium extract, lotus extract, parsley extract, birch extract, honey, hamamelis extract, parietalia extract, hikiokoshi extract, bisabolol, cypress extract, bifidobacterium extract, loquat extract, coltsfoot extract, coltsfoot extract, butterbur extract, Butcher bloom extract, grape extract, grape seed extract, propolis, loofah extract, safflower extract, peppermint extract, bodega extract, button extract, hop extract, mica extract, pine extract, horse chestnut extract, skunk cabbage extract, Sapindium extract, Melissa extract, Mozuku Extract, peach extract, cornflower extract, eucalyptus extract, saxifrage extract, yuzu extract, lily extract, yokuinin extract, mugwort extract, lavender extract, green tea extract, eggshell membrane extract, apple extract, rooibos tea extract, reishi extract, lettuce extract, lemon extract, forsythia Extracts include astragalus extract, rose extract, rosemary extract, Roman chamomile extract, royal jelly extract, and silver leaf extract.

Examples of antipruritic agents include diphenhydramine hydrochloride, chlorpheniramine maleate, camphor, and substance-P inhibitors.

Examples of exfoliating/dissolving agents include salicylic acid, sulfur, resorcinol, selenium sulfide, and pyridoxine.

Examples of antiperspirants include aluminum chlorohydroxy, aluminum chloride, zinc oxide, and zinc paraphenolsulfonate.

Examples of refreshing agents include menthol and methyl salicylate.

Examples of the astringent include citric acid, tartaric acid, lactic acid, aluminum/potassium sulfate, and tannic acid.

Examples of the enzyme include superoxide dismutase, catalase, lysozyme chloride, lipase, papain, pancreatin, and protease.

Examples of the nucleic acid include ribonucleic acid and its salts, deoxyribonucleic acid and its salts, adenosine triphosphate disodium, and the like.

Examples of fragrances include acetyl cedrene, amyl cinnamaldehyde, allyl amyl glycolate, β-ionone, isoesuper, isobutylquinoline, iris oil, irone, indole, ylang-ylang oil, undecanal, undecenal, γ-undeca Lactone, estragol, eugenol, oakmoss, opoponax resinoid, orange oil, eugenol, aurantiol, galaxolide, carvacrol, L-carvone, camphor, canon, carrot seed oil, clove oil, methyl cinnamate, geraniol, Geranyl nitrile, isobornyl acetate, geranyl acetate, dimethylbenzylcarbinyl acetate, styralyl acetate, cedryl acetate, terepinel acetate, pt-butylcyclohexyl acetate, vetiberyl acetate, benzyl acetate, linalyl acetate, isopentyl salicylate, benzyl salicylate, sandalwood oil , santalol, cyclamenaldehyde, cyclopentadecanolide, methyl dihydrojasmonate, dihydromircenol, jasmine absolute, jasmine lactone, cis-jasmone, citral, citronenol, citronellal, cinnamon bark oil, 1,8-cineol, cinnamon Mualdehyde, styrax resinoid, cedarwood oil, cedrene, cedrol, celery seed oil, thyme oil, damascone, damascenone, thymol, tuberose absolute, decanal, decalactone, terpineol, γ-terpinene, tripral, nerol, nonanal, 2,6-nonadienol , nonalactone, patchouli alcohol, vanilla absolute, vanillin, basil oil, patchouli oil, hydroxycitronellal, α-pinene, piperitone, phenethyl alcohol, phenylacetaldehyde, petitgrain oil, hexylcinnamaldehyde, cis-3-hexenol, Peru balsam, Vetiver oil, vetiverol, peppermint oil, pepper oil, heliotropin, bergamot oil, benzyl benzoate, borneol, milresinoid, musk ketone, methylnonylacetaldehyde, γ-methylionone, menthol, L-menthol, L-menthone, eucalyptus oil, β- Synthetic and natural fragrances such as yonon, lime oil, lavender oil, D-limonene, linalool, liral, lireal, lemon oil, rose absolute, rose oxide, rose oil, rosemary oil, various essential oils, and various blended fragrances. It will be done.

Examples of pigments, colorants, dyes, and pigments include Brown No. 201, Black No. 401, Purple No. 201, Purple No. 401, Blue No. 1, Blue No. 2, Blue No. 201, Blue No. 202, Blue No. 203, Blue No. 204, Blue No. 205, Blue No. 403, Blue No. 404, Green No. 201, Green No. 202, Green No. 204, Green No. 205, Green No. 3, Green No. 401, Green No. 402, Red No. 102, Red 104 -1, Red No. 105-1, Red No. 106, Red No. 2, Red No. 201, Red No. 202, Red No. 203, Red No. 204, Red No. 205, Red No. 206, Red No. 207, Red No. 208, Red No. 213, Red No. 214, Red No. 215, Red No. 218, Red No. 219, Red No. 220, Red No. 221, Red No. 223, Red No. 225, Red No. 226, Red No. 227, Red No. 228, Red No. 230 -1, Red No. 230-2, Red No. 231, Red No. 232, Red No. 3, Red No. 401, Red No. 404, Red No. 405, Red No. 501, Red No. 502, Red No. 503, Red No. 504, Red No. 505, Red No. 506, Orange No. 201, Orange No. 203, Orange No. 204, Orange No. 205, Orange No. 206, Orange No. 207, Orange No. 401, Orange No. 402, Orange No. 403, Yellow No. 201, Yellow 202 -1, Yellow No. 202-2, Yellow No. 203, Yellow No. 204, Yellow No. 205, Yellow No. 4, Yellow No. 401, Yellow No. 402, Yellow No. 403-1, Yellow No. 404, Yellow No. 405, Yellow No. 406 Other acidic dyes such as Acid Red 14; Basic dyes such as Arianor Sienna Brown, Arianor Madder Red, Arianor Steel Blue, Arianor Straw Yellow; HC Yellow 2, HC Yellow 5 , HC Red 3,4-hydroxypropylamino-3-nitrophenol, N,N'bis(2-hydroxyethyl)-2-nitro-p-phenylenediamine, HC Blue 2, Basic Blue 26, etc. Toro dye; disperse dye; titanium dioxide, Inorganic white pigments such as zinc oxide; Inorganic red pigments such as iron oxide (red iron oxide) and iron titanate; Inorganic brown pigments such as γ-iron oxide; Inorganic yellow pigments such as yellow iron oxide and ocher; Black iron oxide , inorganic black pigments such as low-order titanium oxide; inorganic purple pigments such as mango violet and cobalt violet; inorganic green pigments such as chromium oxide, chromium hydroxide, and cobalt titanate; inorganic blue pigments such as ultramarine blue and deep blue ; Pearl pigments such as titanium oxide coated mica, titanium oxide coated bismuth oxychloride, titanium oxide coated talc, colored titanium oxide coated mica, bismuth oxychloride, fish scale foil; Metal powder pigments such as aluminum powder, copper powder, gold; Surface treatment Inorganic and metallic powder pigments; Red No. 201, Red No. 202, Red No. 204, Red No. 205, Red No. 220, Red No. 226, Red No. 228, Red No. 405, Orange No. 203, Orange No. 204, Yellow No. 205, Yellow No. 401, Blue No. 404, Red No. 3, Red No. 104, Red No. 106, Red No. 227, Red No. 230, Red No. 401, Red No. 505, Orange No. 205, Yellow No. 4, Yellow No. 5, Yellow 202 Organic pigments such as zirconium, barium or aluminum lake such as Yellow No. 203, Green No. 3, Blue No. 1; Surface-treated organic pigments; anthraquinones such as astaxanthin and alizarin, anthocyanidins, β-carotene, catenals, capsanthin, chalcone , naphthoquinones such as calsamine, quercetin, crocin, chlorophyll, curcumin, cochineal, and shikonin; natural pigments and dyes such as bixin, flavones, betacyanidin, henna, hemoglobin, lycopene, riboflavin, and rutin; p-phenylenediamine, toluene; 2,5-diamine, o-, m-, or p-aminophenol, m-phenylenediamine, 5-amino-2-methylphenol, resorcinol, 1-naphthol, 2,6-diaminopyridine, etc. and salts thereof, etc. Examples include oxidative dye intermediates and couplers; autooxidative dyes such as indoline; dihydroxyacetone; and the like.

In addition to these additive ingredients, the moisturizer, skin cosmetic, external skin preparation, or hair cosmetic of the present invention is also required to comply with the Cosmetic Raw Material Standards, Cosmetic Type Compounding Ingredient Standards, Japan Cosmetic Industry Federation Ingredient Display Name List, and INCI Dictionary. (The International Cosmetic Ingredient Dictionary and Handbook), Quasi-drug Ingredients Standards, Japanese Pharmacopoeia, Pharmaceutical Excipients Standards, Food Additives Official Standards, etc., and the international patent classification IPC is classified as A61K7. Ingredients listed in Japanese and foreign patent publications and patent publications (including publications and re-publications), known cosmetic ingredients, pharmaceutical ingredients, food ingredients, etc., in known combinations and ratios. It is possible to contain it in a blended amount.

The skin cosmetic, external skin preparation, or hair cosmetic of the present invention may be produced by any appropriate method as long as the effects of the present invention are not impaired.

The dosage forms of the skin cosmetic, external skin preparation, or hair cosmetic of the present invention include, for example, oil-in-water (O/W) type, water-in-oil (W/O) type, W/O/W type, O /W/O type emulsified cosmetics, oil-based cosmetics, solid cosmetics, liquid cosmetics, powdered cosmetics, stick-like cosmetics, volatile oil-based cosmetics, powdered cosmetics, jelly-like cosmetics Examples include dosage forms such as gel cosmetics, paste cosmetics, emulsified polymer cosmetics, sheet cosmetics, mist cosmetics, and spray cosmetics.

EXAMPLES Hereinafter, the present invention will be specifically explained with reference to Examples, but the present invention is not limited to these Examples. In addition, unless otherwise specified, "part" means "part by mass" and "%" means "% by mass."

<Gel permeation chromatography (GPC)>
The weight average molecular weight (Mw) of the polymer was measured by GPC (gel permeation chromatography). The measurement conditions, equipment, etc. are as follows.
Equipment: Tosoh Corporation EcoSEC HLC-8320GPC
Detector: Differential refractometer (RI) Detector column: SHODEX Asahipak GF-1G-7B, GF-310-HQ, GF-710-HQ
Column temperature: 40℃
Flow rate: 0.5mL/min
Injection volume: 10 μL (eluent preparation solution with sample concentration 0.4 wt%)
Calibration curve: Polyethylene glycol GPC software manufactured by GL Sciences: EcoSEC-WS manufactured by Tosoh Corporation
Eluent: 0.1M sodium acetate/acetonitrile = 70/30 (v/v)

<Analysis of monomer>
Monomer analysis was performed using liquid chromatography under the following conditions.
Equipment: Shiseido “NANOSPACESI-2”
Column: Shiseido “CAPCELLPAK C18 UG120”
Column temperature: 20℃
Flow rate: 0.1ml/min
Eluent: LC methanol (manufactured by Wako Pure Chemical Industries, Ltd.)/ultra pure water = 1/24 (mass ratio), 0.4% by mass of sodium 1-heptanesulfonate added

<Evaluation of application feel (elasticity)>
The application feel (elasticity) was evaluated by three evaluators.
Place one drop of the sample solution in a 5 mL eye dropper bottle on the inside of your forearm and apply it with your index finger to measure the feel of the application (elasticity) (feeling of film thickness) when applying the sample solution and spreading it on the skin (in an aqueous solution state). evaluated. The feeling of elasticity is the force (normal stress) that acts upward in response to the left and right movements of the fingers when applying it to the skin, and is also referred to as the feeling of film thickness. It is preferable that a feeling of elasticity exists. The evaluation was on an 11-point scale, with higher numbers being stronger, and the decision was made through discussion among the three evaluators.
The evaluation of the main moisturizers is as follows.
10 points: High molecular weight hyaluronic acid (manufactured by Kikkoman, trade name "FCH-200") 0.5% aqueous solution 3 points: Pure water, 27% glycerin aqueous solution, 30% sucrose aqueous solution

<Evaluation of residual feel (frictional feeling/adhesive feeling)>
Three evaluators evaluated the application feel (frictional feeling, adhesive feeling).
Add one drop of the sample solution in a 5mL eye drop bottle to the inside of your forearm and apply it with your index finger.When the application is complete (moisture has evaporated), you can feel it when you touch the surface to which the solution has been applied with your finger. "Frictional feeling" (squeaky or smooth feeling) and "adhesive feeling" (sticky or moist feeling) were evaluated. The frictional feeling is a force (dynamic frictional force) that acts in the opposite direction to the left and right movement of the fingers, and if there is no frictional feeling, it will give a smooth feeling, which is preferable. Adhesion is the force that acts downward against the upward force that pulls the finger away from the skin (peel resistance force), and is expressed as sticky, sticky, moist, etc. In general, a strong tackiness indicates unpleasant stickiness, while a weak and moderate tackiness indicates a good moist feeling. The evaluation was on a scale of 10, with higher numbers being stronger, and the decision was made through discussion among the three evaluators.
The evaluation of the main moisturizers is as follows.
10 points: 30% sucrose aqueous solution 8 points: 16% sucrose aqueous solution 4 points: Glycerin 27% aqueous solution 3 points: Pure water (nothing applied)
Regarding the numerical value of the stickiness evaluation of the residual feel, 1 to 4 is a range where the stickiness is too weak, 5 to 7 is a preferable range where the stickiness is weak and moderate, and 8 to 10 is a strong stickiness and unpleasant stickiness. This is the range in which Only the samples that were found to have preferable tackiness (corresponding to tackiness 5 to 7) in the evaluation of the residual tackiness were evaluated for the residual frictional feeling.

<Evaluation of moisture retention>
Moisturizing properties were evaluated by measuring the conductance of the subject's stratum corneum water content using SKICON-200EX under the following conditions.
Equipment: SKICON-200EX (manufactured by IBS)
Measurement environment: temperature 25℃, humidity 30%
The inside of the subject's forearm was washed to remove excess dirt and sebum. After 15 minutes, 50 μL of sample solution was applied to 8 cm ² . After 5 minutes, conductance was measured from above the coating using SKICON-200EX. Furthermore, 50 μL of the sample solution was reapplied to 8 cm ² after 1 hour and 2 hours, and the conductance was measured again from above the coating after 3 hours.

[Synthesis Example 1] (Synthesis of copolymer (1) with NVP/SA=80/20)
A glass separable flask equipped with a thermometer, a reflux condenser, and a stirrer was charged with 136.0 g of pure water, and the temperature was raised to 80° C. while stirring. Next, 51.2 g of N-vinylpyrrolidone (hereinafter abbreviated as NVP), 64.0 g of a 20% aqueous solution of sodium acrylate (hereinafter abbreviated as SA), and dimethyl were added to a polymerization reaction system maintained at a constant temperature of 80° C. under stirring. 6.4 g of a 10% aqueous solution of 2,2'-azobis(2-methylpropionamidine) dihydrochloride (hereinafter abbreviated as V-50) was dropped from separate dropping nozzles. Regarding the dropping time, all the drops were started at the same time, and the 10% aqueous solutions of NVP and V-50 were continuously dropped for 120 minutes. After 60.8 g of a 20% aqueous solution of SA was added dropwise over 120 minutes, the remaining amount was added dropwise over 30 minutes. Thirty minutes after the completion of the dropwise addition, 0.6 g of a 10% aqueous solution of V-50 was added, and the mixture was further maintained at 80° C. for 60 minutes to complete the polymerization reaction to obtain copolymer (1). The weight average molecular weight of the obtained copolymer (1) was 120,000.

[Synthesis Example 2] (Synthesis of copolymer (2) with NVP/SA=80/20)
A glass separable flask equipped with a thermometer, a reflux condenser, and a stirrer was charged with 136.0 g of pure water, and the temperature was raised to 80° C. while stirring. Next, 51.2 g of NVP, 64.0 g of a 20% aqueous solution of SA, and 3.2 g of a 10% aqueous solution of V-50 were added dropwise from separate dropping nozzles into the polymerization reaction system kept at a constant state of 80° C. while stirring. Regarding the dropping time, all the drops were started at the same time, and the 10% aqueous solutions of NVP and V-50 were continuously dropped for 120 minutes. After 60.8 g of a 20% aqueous solution of SA was added dropwise over 120 minutes, the remaining amount was added dropwise over 30 minutes. Thirty minutes after the completion of the dropwise addition, 0.6 g of a 10% aqueous solution of V-50 was added, and the mixture was further maintained at 80° C. for 60 minutes to complete the polymerization reaction to obtain copolymer (2). The weight average molecular weight of the obtained copolymer (2) was 200,000.

[Synthesis Example 3] (Synthesis of copolymer (3) with NVP/SA=95/5)
A glass separable flask equipped with a thermometer, a reflux condenser, and a stirrer was charged with 175.9 g of pure water, and the temperature was raised to 80° C. while stirring. Next, 60.8 g of NVP, 16.0 g of a 20% aqueous solution of SA, and 3.2 g of a 10% aqueous solution of V-50 were added dropwise from separate dropping nozzles into the polymerization reaction system kept at a constant temperature of 80° C. while stirring. Regarding the dropping time, all the drops were started at the same time, and the 10% aqueous solutions of NVP and V-50 were continuously dropped for 120 minutes. After 15.2 g of a 20% aqueous solution of SA was added dropwise over 120 minutes, the remaining amount was added dropwise over 30 minutes. Thirty minutes after the completion of the dropwise addition, 0.6 g of a 10% aqueous solution of V-50 was added, and the mixture was further maintained at 80°C for 60 minutes to complete the polymerization reaction to obtain copolymer (3). The weight average molecular weight of the obtained copolymer (3) was 190,000.

[Synthesis Example 4] (Synthesis of NVP/HEA=80/20 copolymer (4))
A separable glass flask equipped with a thermometer, a reflux condenser, and a stirrer was charged with 144.3 g of pure water, and the temperature was raised to 80° C. while stirring. Next, a monomer solution (1) was prepared by adding 32.0 g of pure water to 12.8 g of hydroxyethyl acrylate and adjusting the pH to 8 to 9 with diethanolamine. While stirring, 51.2 g of NVP, 44.8 g of monomer solution (1), and 16.0 g of a 1% aqueous solution of V-50 were added dropwise from separate dropping nozzles into the polymerization reaction system kept at a constant 80°C. Regarding the dropping time, all the drops were started at the same time and were continuously dropped for 120 minutes. Thirty minutes after the completion of the dropwise addition, 0.6 g of a 10% aqueous solution of V-50 was added, and the mixture was further maintained at 80°C for 30 minutes to complete the polymerization reaction to obtain copolymer (4). The weight average molecular weight of the obtained copolymer (4) was 200,000.

[Synthesis Example 5] (Synthesis of NVP/HEMA=80/20 copolymer (5))
A separable glass flask equipped with a thermometer, a reflux condenser, and a stirrer was charged with 144.3 g of pure water, and the temperature was raised to 80° C. while stirring. Next, a monomer solution (1) was prepared by adding 32.0 g of pure water to 12.8 g of hydroxyethyl methacrylate and adjusting the pH to 8 to 9 with diethanolamine. While stirring, 51.2 g of NVP, 44.8 g of monomer solution (1), and 16.0 g of a 1% aqueous solution of V-50 were added dropwise from separate dropping nozzles into the polymerization reaction system kept at a constant 80°C. Regarding the dropping time, all the drops were started at the same time and were continuously dropped for 120 minutes. Thirty minutes after the completion of the dropwise addition, 0.6 g of a 10% aqueous solution of V-50 was added, and the mixture was further maintained at 80°C for 30 minutes to complete the polymerization reaction to obtain a copolymer (5). The weight average molecular weight of the obtained copolymer (5) was 222,000.

[Synthesis Example 6] (Synthesis of NVP/PEG methacrylate = 50/50 copolymer (6))
A glass separable flask equipped with a thermometer, a reflux condenser, and a stirrer was charged with 143.0 g of pure water, and the temperature was raised to 80° C. while stirring. Next, a monomer solution (2) was prepared by adding 32.0 g of pure water to 32.0 g of methoxypolyethylene glycol ester of methacrylic acid (EO chain length = 9 moles) and adjusting the pH to 8 to 9 with diethanolamine. While stirring, 32.0 g of NVP, 64.0 g of monomer solution (2), and 14.7 g of a 1% aqueous solution of V-50 were added dropwise from separate dropping nozzles into the polymerization reaction system kept at a constant 80°C. Regarding the dropping time, all the drops were started at the same time and were continuously dropped for 120 minutes. Thirty minutes after the completion of the dropwise addition, 0.6 g of a 10% aqueous solution of V-50 was added, and the mixture was further maintained at 80°C for 30 minutes to complete the polymerization reaction to obtain copolymer (6). The weight average molecular weight of the obtained copolymer (6) was 188,000.

[Comparative Synthesis Example 1] (Synthesis of comparative copolymer (1) with NVP/SA=80/20)
A separable glass flask equipped with a thermometer, a reflux condenser, and a stirrer was charged with 128.0 g of pure water, and the temperature was raised to 80° C. while stirring. Next, while stirring, 51.2 g of NVP, 64.0 g of a 20% aqueous solution of SA, and 16.0 g of a 10% aqueous solution of V-50 were dropped into the polymerization reaction system kept at a constant state of 80° C. from separate dropping nozzles. Regarding the dropping time, all the drops were started at the same time, and the 10% aqueous solutions of NVP and V-50 were continuously dropped for 120 minutes. After 60.8 g of a 20% aqueous solution of SA was added dropwise over 120 minutes, the remaining amount was added dropwise over 30 minutes. Thirty minutes after the completion of the dropwise addition, 0.6 g of a 10% aqueous solution of V-50 was added, and the mixture was further maintained at 80° C. for 60 minutes to complete the polymerization reaction to obtain comparative copolymer (1). The weight average molecular weight of the obtained comparative copolymer (1) was 51,000.

[Example 1-1]
An aqueous solution containing 1% by mass of copolymer (1) obtained in Synthesis Example 1 was prepared and evaluated. The results are shown in Table 1.

[Example 1-2]
An aqueous solution containing 1% by mass of copolymer (2) obtained in Synthesis Example 2 was prepared and evaluated. The results are shown in Table 1.

[Comparative example 1-1]
An aqueous solution containing 1% by mass of the comparative copolymer (1) obtained in Comparative Synthesis Example 1 was prepared and evaluated. The results are shown in Table 1.

[Comparative example 1-2]
An aqueous solution containing 0.3% by mass of polymeric hyaluronic acid (manufactured by Kikkoman, trade name "FCH-200") was prepared and evaluated. The results are shown in Table 1.

[Comparative example 1-3]
An aqueous solution containing 10% by mass of glycerin (Fuji Film Wako Pure Chemical Industries, Ltd., reagent) was prepared and evaluated. The results are shown in Table 1.

[Example 2-1]
An aqueous solution containing 3% by mass of the copolymer (1) obtained in Synthesis Example 1 and 0.1% by mass of polymeric hyaluronic acid (manufactured by Kikkoman, trade name "FCH-200") was prepared and evaluated. . The results are shown in Table 2.

[Example 2-2]
An aqueous solution containing 3% by mass of the copolymer (2) obtained in Synthesis Example 2 and 0.1% by mass of polymer hyaluronic acid (manufactured by Kikkoman, trade name "FCH-200") was prepared and evaluated. . The results are shown in Table 2.

[Comparative example 2-1]
An aqueous solution containing 3% by mass of the comparative copolymer (1) obtained in Comparative Synthesis Example 1 and 0.1% by mass of polymeric hyaluronic acid (manufactured by Kikkoman, trade name "FCH-200") was prepared and evaluated. went. The results are shown in Table 2.

[Comparative example 2-2]
An aqueous solution containing 0.3% by mass of polymeric hyaluronic acid (manufactured by Kikkoman, trade name "FCH-200") was prepared and evaluated. The results are shown in Table 2.

[Comparative example 2-3]
An aqueous solution containing 0.1% by mass of polymeric hyaluronic acid (manufactured by Kikkoman, trade name "FCH-200") was prepared and evaluated. The results are shown in Table 2.

It can be seen that Examples 2-1 and 2-2 have a moderate residual sticky feeling, but also have a reduced frictional feeling, and are excellent in feel when used.

[Example 3-1]
Prepare an aqueous solution containing 3% by mass of the copolymer (1) obtained in Synthesis Example 1, 0.1% by mass of low molecular weight hyaluronic acid (manufactured by Kikkoman, trade name "FCH-SU"), and 10% by mass of glycerin. and evaluated it. The results are shown in Table 3.

[Example 3-2]
An aqueous solution containing 3% by mass of the copolymer (2) obtained in Synthesis Example 2, 0.1% by mass of low molecular weight hyaluronic acid (manufactured by Kikkoman, trade name "FCH-SU"), and 10% by mass of glycerin was prepared. and evaluated it. The results are shown in Table 3.

[Example 3-3]
An aqueous solution containing 3% by mass of the copolymer (1) obtained in Synthesis Example 1, 0.1% by mass of high molecular weight hyaluronic acid (manufactured by Kikkoman, trade name "FCH-200"), and 10% by mass of glycerin was prepared. and evaluated it. The results are shown in Table 3.

[Example 3-4]
Prepare an aqueous solution containing 3% by mass of copolymer (2) obtained in Synthesis Example 2, 0.1% by mass of polymer hyaluronic acid (manufactured by Kikkoman, trade name "FCH-200"), and 10% by mass of glycerin. and evaluated it. The results are shown in Table 3.

[Comparative example 3-1]
An aqueous solution containing 0.1% by mass of low molecular weight hyaluronic acid (manufactured by Kikkoman, trade name "FCH-SU") and 10% by mass of glycerin was prepared and evaluated. The results are shown in Table 3.

[Comparative example 3-2]
An aqueous solution containing 0.1% by mass of polymeric hyaluronic acid (manufactured by Kikkoman, trade name "FCH-200") and 10% by mass of glycerin was prepared and evaluated. The results are shown in Table 3.

[Comparative example 3-3]
An aqueous solution containing 10% by mass of glycerin (Fuji Film Wako Pure Chemical Industries, Ltd., reagent) was prepared and evaluated. The results are shown in Table 3.

The humectant polymer of the present invention is useful for humectants, skin cosmetics, external skin preparations, hair cosmetics, and the like.

Claims (6)

It has a structural unit (a) derived from an unsaturated monomer (A) having a lactam structure and a structural unit (b) derived from an unsaturated monomer (B) represented by the general formula ( 2 ),
The unsaturated monomer (A) having a lactam structure is N-vinylpyrrolidone and/or N-vinylcaprolactam ,
The structural unit (b) is a structural unit derived from at least one selected from the group consisting of (meth)acrylic acid or a salt thereof, and a polyalkylene glycol-containing monomer,
When the structural unit (b) is a polyalkylene glycol-containing monomer, R ⁶ in the general formula ( 2 ) is a group represented by the general formula (A), and in the general formula (A), R ^a is , -CH ₂ CH ₂ - group, -CH ₂ CH ₂ (CH ₃ )- group, -CH ₂ CH ₂ (C ₂ H ₅ )- group , and R ^b is methyl is a group, n is a number from 1 to 200,
The ratio of the structural unit (a) to 100% by mass of all structural units is 30% by mass to 99% by mass,
The ratio of the structural unit (b) to 100% by mass of all structural units is 1% by mass to 70% by mass,
The ratio of the structural unit (e) derived from the structural unit (a) and other monomers (E) other than the structural unit (b) to 100% by mass of the total structural units is 0 to 5% by mass,
The weight average molecular weight is 80,000 or more,
Polymers for humectants (provided that the polymer has a hydrophilic repeating unit and a polyoxyalkylene group in the side chain, and the end of the side chain is an alkyl group with 5 to 30 carbon atoms, an alkanoyl group with 5 to 30 carbon atoms, or an alkanoyl group with 6 carbon atoms) (excluding polymers having repeating units composed of ~30 aryl groups).

(In general formula (2), R ⁵ represents a hydrogen atom or a methyl group, and R ⁶ represents a hydrogen atom, a monovalent to trivalent metal atom, an atomic group containing a monovalent to trivalent metal atom, ammonium Represents a (poly)oxyalkylene group that may have a salt, a substituent, or a hydrocarbon group having 1 to 30 carbon atoms and having a (poly)oxyalkylene group as a substituent.)

The humectant polymer according to claim 1 , which is water-soluble. The humectant polymer according to claim 1 or 2 , which is used in a humectant. The moisturizing polymer according to any one of claims 1 to 3 , which is used in skin cosmetics, external skin preparations, or hair cosmetics. A humectant comprising the humectant polymer according to claim 1 or 2 . A skin cosmetic, an external skin preparation, or a hair cosmetic, comprising the moisturizing polymer according to claim 1 or 2 .