WO2018186261A1 - Cleansing cosmetic - Google Patents

Abstract

A cleansing cosmetic is provided which has excellent oil stain detergency, can be readily rinsed out with water, and has excellent dischargeability when filled into a pump-type container, does not tend to drip when held in the hand, and has excellent spreadability. This cleansing cosmetic contains a thickener (A), an oil agent (B) and a surfactant (C); per 100 parts by weight of the oil agent (B), the cleansing cosmetic contains, as the thickener (A), 0.1-10.0 parts by weight of modified cellulose fibers having a structure in which the group represented by formula (1-1) and/or the group represented by formula (1-2) is bonded to a pyranose ring constituting a cellulose fiber.

Description

Cleansing cosmetics

The present invention relates to a cleansing cosmetic that removes oily dirt, and is suitable for use by filling a pump-type container. This application claims the priority of Japanese Patent Application No. 2017-074402 for which it applied to Japan on April 4, 2017, and uses the content here.

As a cleansing cosmetic used to remove oily dirt on the skin, such as dirt from sebum and makeup cosmetics (= make-up dirt), quickly adjust to sebum and makeup dirt, and rinse clean with water. The thing which can be washed away is calculated | required and the liquid cleansing cosmetics containing an oil agent and surfactant are used preferably (patent document 1). However, when liquid cleansing cosmetics are used by filling a pump-type container, the liquid cleansing cosmetic scatters at the time of discharge, falls off between fingers when picked up by the hand, or drips from the discharge port of the container. It was a problem to contaminate.

International Publication No. 2013/172187

As a method for solving this problem, a method of adding a thickener to moderately thicken the oil agent can be considered. However, if, for example, a polystyrene-hydrogenated polyisoprene block copolymer (Japanese Patent Laid-Open No. 8-59765) is used as a thickener, the viscosity becomes too high, and it can be discharged from a pump-type container or applied to the skin. It turned out that the extensibility at the time worsens.
In addition, amino acid derivatives such as dibutyllauroylglutamide, which are known as oil thickeners, and inulin stearate (International Publication No. 2009/139092, International Publication No. 2014/119039, etc.) have a crystallinity as a driving force for gelation. Since a gel having hysteresis is obtained, it was found that a thickening composition having a restorability cannot be obtained, and it is difficult to discharge well in a pump type container. It was also found that even if rinsed with water, it could not be washed out easily.

Accordingly, the object of the present invention is a cleansing cosmetic that has excellent detergency for oily dirt and can be easily washed away with water, and is excellent in dischargeability when filled in a pump-type container. An object of the present invention is to provide a cleansing cosmetic that is not easily dripped off and has excellent spreadability.

As a result of intensive studies to solve the above problems, the present inventor has found that the cellulose fiber having a specific substituent for imparting solubility to the oil agent (that is, the modified cellulose fiber) has an oil agent having an arbitrary viscosity. A cleansing cosmetic containing an oil agent and a surfactant that has been thickened and can stably maintain its viscosity and moderately thickened by the modified cellulose fiber is filled in a pump-type container. Excellent dischargeability, difficult to drain from the container outlet, difficult to sag when picked up by hand, excellent spreadability, easy to wash away by rinsing with water after familiarizing with oily dirt I found what I could do. The present invention has been completed based on these findings.

（式中、Ｒ¹は炭素数１～３０の脂肪族炭化水素基を示し、ｎは０又は１を示す。ｍは１０～１００の整数を示し、ｍ個のＲ²は同一又は異なって炭素数２～４のアルキレン基を示す。Ｒ³は炭素数１～２０の脂肪族炭化水素基を示す） That is, the present invention is a cleansing cosmetic comprising a thickener (A), an oil agent (B) and a surfactant (C), wherein the thickener (A) is represented by the following formula (1-1): And / or a modified cellulose fiber having a structure in which a group represented by the following formula (1-2) is bonded to a pyranose ring constituting the cellulose fiber, with respect to 100 parts by weight of the oil agent (B) A cleansing cosmetic containing 0.1 to 10.0 parts by weight is provided.

(Wherein R ¹ represents an aliphatic hydrocarbon group having 1 to 30 carbon atoms, n represents 0 or 1, m represents an integer of 10 to 100, and m R ^{2 s} are the same or different and represent carbon atoms. And represents an alkylene group having 2 to 4. R ³ represents an aliphatic hydrocarbon group having 1 to 20 carbon atoms.

The present invention also provides the cleansing cosmetic as described above, which has a viscosity of 300 to 6000 mPa · s at 25 ° C. and a shear rate of 10 s ⁻¹ .

The cleansing cosmetic of the present invention has an appropriate viscosity when the oil agent is thickened by the modified cellulose fiber, and the viscosity is stably maintained over time. It is hard to fall off and has excellent spreadability. In addition, when filled in a pump-type container, it is excellent in dischargeability and hardly leaks from the discharge port of the container. In addition, the cleansing cosmetic composition of the present invention is excellent in the detergency of oily stains, can easily become familiar with skin stains and makeup stains, and can be washed away by rinsing with water. Therefore, the cleansing cosmetic composition of the present invention is suitable as a cleansing agent for oily skin dirt and makeup dirt used by filling a pump-type container.

[Cleansing cosmetics]
The cleansing cosmetic composition of the present invention contains a thickener (A), an oil agent (B), and a surfactant (C). The thickener (A), the oil agent (B), and the surfactant (C) can each be used alone or in combination of two or more.

（式中、Ｒ¹は炭素数１～３０の脂肪族炭化水素基を示し、ｎは０又は１を示す。ｍは１０～１００の整数を示し、ｍ個のＲ²は同一又は異なって炭素数２～４のアルキレン基を示す。Ｒ³は炭素数１～２０の脂肪族炭化水素基を示す） (Thickener (A))
In the thickener (A) in the present invention, the group represented by the following formula (1-1) and / or the group represented by the following formula (1-2) are bonded to the pyranose ring constituting the cellulose fiber. A modified cellulose fiber having a structure (hereinafter sometimes referred to as “modified cellulose fiber in the present invention”).

(Wherein R ¹ represents an aliphatic hydrocarbon group having 1 to 30 carbon atoms, n represents 0 or 1, m represents an integer of 10 to 100, and m R ^{2 s} are the same or different and represent carbon atoms. And represents an alkylene group having 2 to 4. R ³ represents an aliphatic hydrocarbon group having 1 to 20 carbon atoms.

The aliphatic hydrocarbon group for R ¹ has 1 to 30 carbon atoms, preferably 3 to 30, more preferably 5 to 25, particularly preferably 10 to 20, and most preferably 15 to 20. By making the carbon number of the aliphatic hydrocarbon group in R ¹ in the above range, the lipophilicity can be imparted to the cellulose fiber, and good compatibility with the oil agent (B) can be imparted.

The aliphatic hydrocarbon group for R ¹ includes a saturated aliphatic hydrocarbon group and an unsaturated aliphatic hydrocarbon group.

Examples of the saturated aliphatic hydrocarbon group include methyl group, ethyl group, propyl group, isopropyl group, butyl group, isobutyl group, s-butyl group, t-butyl group, pentyl group, hexyl group, decyl group, and lauryl. A linear or branched alkyl group such as a group, a myristyl group, and a stearyl group.

The unsaturated aliphatic hydrocarbon group is an aliphatic hydrocarbon group having at least one unsaturated bond, and an aliphatic hydrocarbon having at least one unsaturated bond selected from a double bond and a triple bond Groups. The unsaturated aliphatic hydrocarbon group only needs to have at least one unsaturated bond, and may have one unsaturated bond or two or more. Note that the upper limit of the number of unsaturated bonds is, for example, 6, preferably 3. Accordingly, the number of unsaturated bonds that the unsaturated aliphatic hydrocarbon group has is, for example, 1 to 6, preferably 1 to 3. Furthermore, when the unsaturated aliphatic hydrocarbon group has a double bond, the group may have any configuration of cis and trans.

Among these, R ¹ is preferably an unsaturated aliphatic hydrocarbon group, particularly preferably an aliphatic hydrocarbon group having at least one double bond, and most preferably 1 to 2 double bonds. 6 (preferably 1 to 3) linear or branched aliphatic hydrocarbon groups (for example, vinyl group, allyl group, 1-butenyl group, 4-hexenyl group, 5-hexenyl group, 7- Octenyl group, 9-decenyl group, 11-dodecenyl group, oleyl group and the like.

As R ¹ , in particular, 1 to 30 (preferably 3 to 30, more preferably 5 to 25, particularly preferably 10) carbon atoms having 1 to 6 (preferably 1 to 3) double bonds. To 20 and most preferably 15 to 20) linear or branched aliphatic hydrocarbon groups are preferred.

Examples of the alkylene group having 2 to 4 carbon atoms in R ² include linear or branched alkylene such as methylene, methylmethylene, dimethylmethylene, ethylene, propylene, trimethylene, and tetramethylene. Groups.

M represents an integer of 10 to 100, and the lower limit of m is preferably 15, particularly preferably 20, most preferably 25, and particularly preferably 30. The upper limit of m is preferably 80, particularly preferably 70, most preferably 60, and particularly preferably 50. By making the value of m into the above range, lipophilicity can be imparted to the cellulose fiber, and good compatibility with the oil agent (B) can be imparted.

Examples of the aliphatic hydrocarbon group having 1 to 20 carbon atoms in R ³ include, for example, methyl group, ethyl group, propyl group, isopropyl group, butyl group, isobutyl group, s-butyl group, t-butyl group, pentyl group, An alkyl group having about 1 to 20 carbon atoms (preferably 1 to 10, particularly preferably 1 to 3) such as a hexyl group, a decyl group, or a dodecyl group; a carbon number such as a vinyl group, an allyl group, or a 1-butenyl group. Alkenyl group having about 20 (preferably 2 to 10, particularly preferably 2 to 3); Alkynyl group having about 2 to 20 carbon atoms (preferably 2 to 10, particularly preferably 2 to 3) such as ethynyl group and propynyl group Etc.

As the aliphatic hydrocarbon group having 1 to 20 carbon atoms in R ³ , an alkyl group (particularly preferably an alkyl group having 1 to 10 carbon atoms, particularly preferably an alkyl group having 1 to 3 carbon atoms) is preferable.

In the thickener (A) in the present invention, at least one group selected from the group represented by the formula (1-1) and the group represented by the formula (1-2) is a cellulose fiber. It contains a modified cellulose fiber having a structure bonded to a constituent pyranose ring (more specifically, bonded to a carbon atom constituting the pyranose ring).

The ratio of the group represented by the above formula (1-1) and the group represented by the above formula (1-2) in the modified cellulose fiber can be appropriately adjusted depending on the application, for example, skin When used as a cleansing agent for oily stains and makeup stains, the average total substitution degree of each group (that is, the average substitution degree of the group represented by the above formula (1-1) and the above formula (1-2 The total degree of average substitution of the groups represented by) is, for example, 0.05 to 3.0. The upper limit of the total degree of substitution is preferably 2.8, particularly preferably 2.7, and most preferably 2.6. The lower limit of the total degree of substitution is preferably 0.1, more preferably 0.3, particularly preferably 0.5, most preferably 1.0, particularly preferably 1.5.

The degree of substitution of the group represented by the above formula (1-1) can be measured by the following method.
1. The modified cellulose fiber is dissolved in dimethylacetamide and acylated with a carboxylic acid anhydride (eg acetic anhydride) in the presence of a catalyst (eg pyridine).
2. The obtained sample is reprecipitated with a poor solvent to remove unreacted components.
3. Thereafter, the total degree of substitution can be determined by dissolving in dimethylacetamide, saponifying with potassium hydroxide, and quantifying the amount of free fatty acid produced.
The completion of acylation can be confirmed by the absence of hydroxyl absorption in the vicinity of 3400 cm ^{−1 in the} IR spectrum. The completion of saponification can be confirmed by the absence of absorption of a carbonyl group in the vicinity of an IR spectrum of 1750 cm ⁻¹ . In addition, when R ¹ in the above formula (1-1) is a methyl group (that is, when the group represented by the formula (1-1) is an acetic acid residue), acetic anhydride is used instead of acetic anhydride. It is preferable to use an anhydride of a monobasic acid other than (such as propionic anhydride). In addition, the amount of free fatty acid produced after saponification can be determined by measuring the hydrazide by HPLC (Journal of chromatography, 416 (1987) 237-245).

ＡＶ％：ケン化で生じた遊離脂肪酸（例えば、酢酸）のケン化前試料重量に対する重量％
［ａ＋ＯＨ］：分析目的で導入したアシル基に対応する遊離脂肪酸の分子量（例えば、カルボン酸無水物として無水酢酸を使用した場合は、酢酸の分子量（６０．０５２ｇ／ｍｏｌ））
［ａ－Ｈ］：分析目的で導入したアシル基とプロトンの分子量の差（例えば、アシル基がアセチル基である場合は、４２．０３７ｇ／ｍｏｌ）
［ｘ－Ｈ］：Ｒ¹基とプロトンの分子量の差（例えば、Ｒ¹基がｃｉｓ－オレイル基である場合は、２６４．４５ｇ／ｍｏｌ）
Ｇ：グルコース残基の分子量（１６２．１４ｇ／ｍｏｌ） For example, the degree of substitution (Dx) of the modified cellulose fiber having a configuration in which the group represented by the above formula (1-1) is bonded can be calculated as follows.

AV%:% by weight of free fatty acid (for example, acetic acid) generated by saponification with respect to the sample weight before saponification
[A + OH]: Molecular weight of free fatty acid corresponding to the acyl group introduced for the purpose of analysis (for example, when acetic anhydride is used as the carboxylic anhydride, the molecular weight of acetic acid (60.52 g / mol))
[AH]: Difference in molecular weight between an acyl group introduced for analysis and a proton (for example, 42.037 g / mol when the acyl group is an acetyl group)
[XH]: Difference in molecular weight between R ¹ group and proton (for example, 264.45 g / mol when R ¹ group is a cis-oleyl group)
G: Molecular weight of glucose residue (162.14 g / mol)

The degree of substitution of the group represented by the above formula (1-2) can also be determined by the same method as that for the group represented by the above formula (1-1).

（式中のＲ¹は上記に同じ。ｎは１を示す）
で表されるカルボン酸、若しくはそのハロゲン化物、又はその塩を反応させることにより製造することができる。 The modified cellulose fiber having the structure in which the group represented by the above formula (1-1) (n = 1 in the formula) is bonded to the pyranose ring constituting the cellulose fiber is a cellulose fiber. At least one of the hydroxyl groups bonded to the pyranose ring constituting the compound represented by the following formula (1)

(In the formula, R ¹ is the same as described above. N represents 1)
It can manufacture by making the carboxylic acid represented by these, its halide, or its salt react.

Examples of the cellulose fiber that is a raw material of the modified cellulose fiber include pulps obtained from natural plant materials such as wood, bamboo, hemp, jute, kenaf, cotton, beet, agricultural wastes, and cloth; regenerated cellulose fibers such as rayon and cellophane Is mentioned. Of these, pulp is preferable.

Examples of the pulp include chemical pulp obtained by chemically or mechanically pulping plant raw materials (for example, wood, cotton, etc.), deinked waste paper pulp, corrugated waste paper pulp, and magazine waste paper pulp. It is done.

Among these pulps, kraft pulps derived from conifers having strong fiber strength (for example, unbleached kraft pulps of conifers, unbleached kraft pulps exposed to oxygen from conifers, and bleached kraft pulps of conifers) are preferable.

These raw materials are preferably subjected to delignification treatment or bleaching treatment as necessary. Moreover, you may perform the refiner process which beats the said raw material and makes it microfibril.

Examples of the carboxylic acid represented by the above formula (1) include saturated aliphatic carboxylic acids such as butanoic acid, pentanoic acid, caprylic acid, capric acid, lauric acid, myristic acid, stearic acid; crotonic acid, myristoleic acid , Monounsaturated aliphatic carboxylic acids such as palmitoleic acid, oleic acid, elaidic acid, vaccenic acid, gadoleic acid, eicosenoic acid, erucic acid, nervonic acid; diunsaturated such as sorbic acid, linoleic acid, eicosadienoic acid, docosadienoic acid Aliphatic carboxylic acids; triunsaturated aliphatic carboxylic acids such as linolenic acid, pinolenic acid, eleostearic acid, dihomo-γ-linolenic acid, eicosatrienoic acid; stearidonic acid, arachidonic acid, eicosatetraenoic acid, adren Tetraunsaturated aliphatic carboxylic acids such as acids; boseopentaenoic acid, eicosapentaene , Ozubondo acid, sardine acid, penta unsaturated aliphatic carboxylic acids such as tetracosadione penta-enoic acid; docosahexaenoic acid, hexa unsaturated aliphatic carboxylic acids such as herring acid. These can be used alone or in combination of two or more.

（式中のＲ¹は上記に同じ。ｎは０を示す）
で表されるアルコールを反応させることにより製造することができる。 A modified cellulose fiber having the structure in which the group represented by the above formula (1-1) (n = 0 in the formula) is bonded to a pyranose ring constituting the cellulose fiber is a cellulose fiber. At least one of the hydroxyl groups bonded to the pyranose ring constituting the compound represented by the following formula (1 ′)

(In the formula, R ¹ is the same as above. N represents 0)
It can manufacture by making the alcohol represented by these react.

Examples of the alcohol represented by the formula (1 ′) include saturated alcohols such as butanol, pentanol, 1-decanol, 1-dodecanol and stearyl alcohol; allyl alcohol, octadecadienol, docosenol, dodecedienol, oleyl alcohol , Unsaturated alcohols such as tridecenol and linoleyl alcohol.

The amount of the modifying agent used is, for example, 0.1 to 20 mol, preferably 0.4 to 10 mol, per 1 mol of glucose unit in the cellulose fiber. The reaction may be stopped when the denaturant is used in excess and the reaction is carried out until a predetermined average substitution degree is reached.

The reaction for modifying the cellulose fiber with the group represented by the above formula (1-1) is preferably performed in the presence of a catalyst. Examples of the catalyst include acid catalysts such as hydrochloric acid, sulfuric acid, and acetic acid, and basic catalysts. Among these, it is preferable to use a basic catalyst.

Examples of the basic catalyst include nitrogen-containing aromatic heterocyclic compounds such as pyridine and dimethylaminopyridine (DMAP); acyclic or cyclic tertiary amine compounds such as triethylamine, trimethylamine and diazabicyclooctane; potassium carbonate And alkali metal carbonates such as sodium carbonate.

The amount of the catalyst used is, for example, about 0.1 to 10 mol per 1 mol of glucose unit in cellulose fiber.

The reaction temperature of the modification reaction is, for example, about 20 to 160 ° C. The reaction time is, for example, about 2 to 30 hours.

In addition, the modification reaction is preferably performed in a non-aqueous solvent. Examples of the non-aqueous solvent include halogenated hydrocarbons such as methylene chloride, chloroform and carbon tetrachloride; ketones such as acetone and methyl ethyl ketone (MEK); diethyl ether, diisopropyl ether, dibutyl ether, tetrahydrofuran, dioxane, 1, 2 -Ethers such as dimethoxyethane and cyclopentylmethyl ether; Amides such as dimethylformamide, dimethylacetamide and N-methylpyrrolidone; Saturated or unsaturated hydrocarbons such as pentane, hexane, heptane and octane; Aromatics such as benzene, toluene and xylene Hydrocarbons; and mixtures thereof.

Furthermore, in the above modification reaction, the cellulose fiber is subjected to a crushing treatment, and a modifier is added thereto to cause the reaction, thereby improving the degree of substitution and better compatibility with the oil agent (B). It is preferable at the point which can provide.

The modified cellulose fiber having a structure in which the group represented by the above formula (1-2) is bonded to the pyranose ring constituting the cellulose fiber is a cellulose fiber [preferably constituting a cellulose fiber. By reacting an oxidizing agent with a hydroxymethyl group (—CH ₂ OH) bonded to the C5 position of the pyranose ring], an oxidized cellulose fiber having a carboxyl group bonded to the pyranose ring constituting the cellulose fiber is obtained (oxidation step). It can be produced by reacting at least one carboxyl group of the obtained oxidized cellulose fiber with a polyetheramine as a modifier to form a salt (amine modification step).

As the cellulose fiber, it is possible to use the same cellulose fiber as in the case of producing a modified cellulose fiber having a structure in which the group represented by the formula (1-1) is bonded to the pyranose ring constituting the cellulose fiber. it can.

(Oxidation process)
Examples of the oxidizing agent used in the oxidation step include hypohalous acid or a salt thereof (hypochlorous acid or a salt thereof, hypobromite or a salt thereof, hypoiodous acid or a salt thereof, etc.), halogenous acid Or a salt thereof (chlorous acid or a salt thereof, bromine acid or a salt thereof, iodic acid or a salt thereof), a perhalogen acid or a salt thereof (perchloric acid or a salt thereof, periodic acid or a salt thereof), halogen (chlorine, bromine, iodine), halogen oxides _{(ClO, ClO 2, Cl 2} O 6, BrO 2, Br 3 O 7 , etc.), nitrogen oxides _{(NO, NO 2, N 2} O 3 , etc.), Examples include peracids (hydrogen peroxide, peracetic acid, persulfuric acid, perbenzoic acid, etc.). These can be used alone or in combination of two or more.

The reaction between the cellulose fiber and the oxidizing agent is preferably performed in the presence of a catalyst. As the catalyst, for example, an N-oxyl compound such as TEMPO (= 2,2,6,6-tetramethylpiperidine-N-oxyl) or a derivative thereof can be used. In addition, bromides and iodides (alkali metal bromides such as lithium bromide, potassium bromide and sodium bromide; alkali metal iodides such as lithium iodide, potassium iodide and sodium iodide; Alkaline earth metal bromides such as calcium iodide, magnesium bromide and strontium bromide; alkaline earth metal iodides such as calcium iodide, magnesium iodide and strontium iodide) may be used in combination.

In the oxidation step, a carboxyl group is generated as the reaction proceeds, so the pH of the reaction solution is lowered. Therefore, it is preferable to maintain the reaction solution in the alkaline range (for example, pH 9 to 12, preferably 10 to 11) in order to sufficiently proceed the oxidation reaction.

When the carboxyl group bonded to the cellulose nanofiber is present in the form of a salt (for example, sodium salt) after completion of the oxidation step, it is preferable to add an acid to substitute the carboxyl group.

(Amine modification step)
The polyetheramine as a modifier used in the amine modification step is represented, for example, by the following formula (2). R ² , R ³ and m are the same as above. Polyetheramine can be used singly or in combination of two or more.

The weight average molecular weight of polyetheramine (converted to standard polystyrene by GPC) is, for example, 300 or more, preferably 500 or more, particularly preferably 1000 or more, and most preferably 1500 or more. The upper limit of the weight average molecular weight is, for example, 5000, preferably 4000, and particularly preferably 3000.

The amine modification reaction is preferably performed in the presence of a solvent. Examples of the solvent include aromatic hydrocarbons such as benzene, toluene, and xylene; saturated or unsaturated hydrocarbons such as n-hexane, n-octane, cyclohexane, and methylcyclohexane; dichloromethane, dichloroethane, chloroform, methylene chloride, four Halogenated hydrocarbons such as carbon chloride, fluorotrichloromethane, trichlorotrifluoromethane, hexafluorobenzene; tetrahydrofuran, 1,2-dimethoxyethane, cyclopentylmethyl ether, methyl-t-butyl ether (MTBE), 1,4-dioxane, methyl And ethers such as cellosolve; and mixtures thereof.

In the amine modification reaction, the oxidized cellulose fiber obtained through the oxidation process is subjected to a crushing treatment, and a modifier is added to the reaction to improve the degree of substitution. It is preferable at the point which can provide more excellent compatibility.

(Oil agent (B))
As the oil agent in the present invention, it is preferable to use liquid or pasty oil at room temperature (for example, 25 ° C.), but solid oil should also be used within the range where liquid cleansing cosmetics can be prepared. Can do. The oil agent in the present invention may be a polar oil or a nonpolar oil.

Examples of the oil agent in the present invention include hydrocarbons such as liquid paraffin and squalane; sunflower oil, macadamia nut oil, avocado oil, almond oil, wheat germ oil, rice germ oil, olive oil, jojoba oil, evening primrose oil, coconut oil, wild tea flower Oils, natural oils such as rosehip oil; 2-ethylhexyl isononanoate, isononyl isononanoate, isodecyl isononanoate, hexyl laurate, isopropyl palmitate, octyl palmitate, octyl isopalmitate, isopropyl myristate, decyl oleate Cetyl octanoate, cetyl 2-ethylhexanoate, isocetyl octanoate, isopropyl isostearate, ethyl isostearate, stearyl 2-ethylhexanoate, isostearyl 2-ethylhexanoate, tri (capryl / caprin) ) Esters such as glycerin, tri-2-ethylhexanoic acid glycerin; silicone oils such as methylpolysiloxane, methylphenylpolysiloxane, decamethylcyclopentasiloxane; higher fatty acids such as lauric acid, isostearic acid, oleic acid; hexadecyl Examples include higher alcohols such as alcohol and oleyl alcohol. These can be used alone or in combination of two or more.

(Surfactant (C))
The surfactant in the present invention includes a cationic surfactant, an anionic surfactant, an amphoteric surfactant, and a nonionic surfactant. These can be used alone or in combination of two or more. In the present invention, it is particularly preferable to use a nonionic surfactant from the viewpoint of safety.

Nonionic surfactants include ester type, ether type, and ether / ester type compounds.

Examples of the ester type compound include glycerin fatty acid esters such as diglycerin monostearate; polyoxyethylene (5) hydrogenated castor oil, polyoxyethylene (7) hydrogenated castor oil, polyoxyethylene (10) hydrogenated castor oil, Polyoxyethylene (20) hydrogenated castor oil, polyoxyethylene (30) hydrogenated castor oil, polyoxyethylene (40) hydrogenated castor oil, polyoxyethylene (50) hydrogenated castor oil, polyoxyethylene (60) hydrogenated castor oil, Polyoxyethylene hydrogenated castor oil such as polyoxyethylene (100) hydrogenated castor oil; polyoxyethylene (3) glyceryl monoisostearate, polyoxyethylene (6) glyceryl monoisostearate, polyoxyethylene (8) glyceryl mono Isostearate, polyoxy Ethylene (10) glyceryl monoisostearate, polyoxyethylene (15) glyceryl monoisostearate, polyoxyethylene (20) glyceryl monoisostearate, polyoxyethylene (30) glyceryl monoisostearate, polyoxyethylene ( 10) Polyoxyethylene glycerin fatty acids such as glyceryl triisostearate, polyoxyethylene (20) glyceryl triisostearate, polyoxyethylene (30) glyceryl triisostearate, polyoxyethylene (40) glyceryl triisostearate Esters; sorbitan fatty acid esters such as sorbitan monooleate and sorbitan monostearate; polyoxyethylene (6) sorbitan monolaurate, polyoxyethylene (20) sorb Polyoxyethylene (20) sorbitan monostearate, polyoxyethylene sorbitan fatty acid esters such as polyoxyethylene (20) sorbitan monooleate; polyoxyethylene (8) trimethylolpropane trimyristate, polyoxy Polyoxyethylene trimethylolpropane fatty acid esters such as ethylene (20) trimethylolpropane trimyristate and polyoxyethylene (30) trimethylolpropane trimyristate; polyoxyethylene (30) sorbitol tetraoleate, polyoxyethylene (40 ) Polyoxyethylene sorbitol fatty acid esters such as sorbitol tetraoleate; polyoxyethylene (6) diisostearate, polyoxyethylene (12) diisostearate Examples thereof include polyoxyethylene fatty acid esters such as rate.

Examples of the ether type compound include polyoxyethylene alkyl aryl ethers such as polyoxyethylene octyl phenyl ether and polyoxyethylene nonyl phenyl ether, and polyoxyethylene alkyl ethers.

Examples of the ether-ester type compound include polyoxyethylene (5) cetyl ether stearate, polyoxyethylene (10) cetyl ether stearate and the like.

In the present invention, it is particularly preferable to use an ester type compound from the viewpoint of safety, and polyoxyethylene glycerin fatty acid ester is particularly preferable.

[Cleansing cosmetics]
The cleansing cosmetic composition of the present invention contains a thickener (A), an oil agent (B), and a surfactant (C).

The viscosity [at 25 ° C., at a shear rate of 10 s ⁻¹ ] of the cleansing cosmetic of the present invention is, for example, about 300 to 6000 mPa · s, and the upper limit thereof is preferably 5800 mPa · s. The lower limit is preferably 500 mPa · s, more preferably 1000 mPa · s, still more preferably 1500 mPa · s, particularly preferably 2000 mPa · s, most preferably 3000 mPa · s, and particularly preferably 4000 mPa · s. Therefore, when filling and using a pump-type container, it is difficult to scatter during discharge, and dripping from the discharge port can be prevented. In addition, when applied to the skin, it is difficult to fall off between the fingers and has excellent spreadability. That is, it is excellent in usability. On the other hand, if the viscosity exceeds the above range, the dischargeability and usability tend to be reduced. If the viscosity is below the above range, it may scatter during discharge, or may fall from between fingers when picked up. In some cases, the liquid may leak from the discharge port and contaminate the container.

The cleansing cosmetic composition of the present invention includes, for example, a surfactant (C) in an oil composition (or compatible material) obtained through a step of compatibilizing a thickener (A) and an oil agent (B). It can manufacture by mixing. More specifically, the oil composition can be produced by mixing the whole thickener (A) and the oil agent (B), heating them, making them compatible, and then cooling them. In addition, the thickener (A) is mixed with a part of the oil agent (B), heated and compatible, then cooled, and then mixed with the remaining oil agent (B). Can do.

The content of the modified cellulose fiber according to the present invention in the cleansing cosmetic (the total amount when two or more are used) is 0.1 to 10 with respect to 100 parts by weight of the oil (B) contained in the cleansing cosmetic of the present invention. 0.0 parts by weight (preferably 0.5 to 10.0 parts by weight, particularly preferably 1.0 to 5.0 parts by weight).

Further, the content of the modified cellulose fiber in the present invention (when two or more types are contained, the total amount thereof) is 0.1 to 10.0% by weight of the total amount of the cleansing cosmetic, and the lower limit of the above range is preferably 1. 0% by weight. The upper limit of the range is preferably 7.0% by weight, particularly preferably 5.0% by weight. By blending the modified cellulose fiber in the present invention in the above range, an appropriate viscosity can be imparted to the oil agent (B), and a cleansing cosmetic excellent in usability and dischargeability can be obtained. On the other hand, when the content of the modified cellulose fiber in the present invention is below the above range, it tends to be difficult to stably maintain the viscosity of the cleansing cosmetic. Moreover, even if the content of the modified cellulose fiber in the present invention exceeds the above range, it is difficult to obtain an advantageous effect, and the spreadability and dischargeability of the cleansing cosmetic may be lowered.

The cleansing cosmetic composition of the present invention may contain other thickening agents other than the modified cellulose fiber in the present invention as a thickener (A), but the present invention occupies all the thickening agents contained in the cleansing cosmetic composition. The ratio of the modified cellulose fiber in the invention is, for example, 30% by weight or more, preferably 50% by weight or more, particularly preferably 70% by weight or more, and most preferably 85% by weight or more. If the content of the other thickener is excessive, the effect of the present invention tends to be difficult to obtain. The “thickener” in the present invention is a concept including a thickener that imparts viscosity, a gelling agent that gels, and a stabilizer that uniformly stabilizes the components of the composition.

The content of the oil agent (B) (the total amount when containing two or more) is, for example, about 40.0 to 99.0% by weight of the total amount of the cleansing cosmetic, and the lower limit of the above range is preferably 50.0% by weight. %, Particularly preferably 60.0% by weight, most preferably 65.0% by weight, particularly preferably 70.0% by weight. The upper limit of the range is preferably 90.0% by weight, particularly preferably 85.0% by weight, and most preferably 80.0% by weight. The cleansing cosmetic containing the oil agent (B) in the above range is excellent in the detergency of oily dirt.

The combination of the thickener (A) and the oil agent (B) is not particularly limited as long as the thickener (A) and the oil agent (B) are compatible with each other.

The temperature at the time of the compatibility is appropriately selected depending on the types of the thickener (A) and the oil agent (B), and is not particularly limited, but preferably does not exceed 100 ° C., and the boiling point of the oil agent (B) is 100. When the temperature is not higher than ° C., the boiling point is preferable.

The cooling after the compatibility is not limited as long as it can be cooled to, for example, 25 ° C. or less, and may be gradually cooled at room temperature, or may be rapidly cooled by ice cooling or the like.

The content of the surfactant (C) (when two or more types are contained, the total amount thereof) is, for example, about 1.0 to 40.0% by weight of the cleansing cosmetic, and preferably 5.0 to 25.0% by weight. %, Particularly preferably 10.0 to 25.0% by weight, most preferably 15.0 to 25.0% by weight. When the usage-amount of surfactant (C) is less than the said range, it will become difficult to wash away cleansing cosmetics with water. On the other hand, when the usage-amount of surfactant (C) exceeds the said range, irritation | stimulation to skin will become strong and there exists a tendency for safety | security to fall.

The cleansing cosmetic composition of the present invention is one of the components used in normal cleansing cosmetic compositions (hereinafter sometimes referred to as “other components”) as long as the effects of the present invention are not impaired. Or you may contain 2 or more types. Examples of the other components include antiseptics, antibacterial agents, flame retardants, astringents, moisturizers, antioxidants, alcohols, water, colorants, and fragrances.

The content of other components in the cleansing cosmetic composition of the present invention (the total amount when containing two or more types) is, for example, about 10.0% by weight or less, preferably 7.0% by weight or less, and particularly preferably 5.0% or less. % By weight or less.

Since the cleansing cosmetic composition of the present invention has the above characteristics, it is possible to remove oil stains such as makeup stains caused by dirt on the skin or oily cosmetics (for example, foundation, sunscreen cosmetics, lipstick, mascara, etc.) by lightly massaging with fingers. It can be blended and then rinsed clean by rinsing with water. Further, when filling a pump-type container, it can be discharged without being scattered, and dripping from the discharge port can be suppressed. Therefore, the cleansing cosmetic composition of the present invention can be suitably used as a cleansing agent for oily skin stains and makeup stains used by filling a pump-type container.

Hereinafter, the present invention will be described more specifically with reference to examples, but the present invention is not limited to these examples.

Preparation Example 1 (Preparation of modified cellulose fiber)
Refiner-treated softwood bleached kraft pulp (manufactured by Oji Paper Co., Ltd.) was dispersed in water to prepare a pulp water suspension having a solid content concentration of 1% by weight.
The obtained pulp water suspension is fibrillated using a stone mill (trade name “Serendipitter MKCA6-3”, manufactured by Masuko Sangyo Co., Ltd., disk rotation speed: 1500 rpm) to obtain fibrillated cellulose. An aqueous suspension (solid content concentration: 1% by weight) was obtained.
Thereafter, water in the fibrillated cellulose aqueous suspension was replaced with N-methylpyrrolidone to obtain a fibrillated cellulose suspension having a solid content concentration of 0.5% by weight.
To the resulting fibrillated cellulose suspension, pyridine is added as a catalyst, and cis-oleoyl chloride is added at a ratio of 1 mole per 1 mole of glucose units in the fibrillated cellulose and reacted at 30 ° C. It was. After completion of the reaction, the resulting product was thoroughly washed with ethanol, solvent-substituted with toluene, suspended in toluene, and 1% by weight of a modified cellulose fiber suspension [thickener (1)]. Obtained.

Preparation Example 2 (Preparation of modified cellulose fiber)
(Oxidation process)
After adding 150 ml of water, 0.25 g of sodium bromide, and TEMPO (0.025 g) to 2 g of softwood pulp and stirring and dispersing, 13% sodium hypochlorite aqueous solution (co-oxidant) was added to the pulp 1 The amount of sodium hypochlorite to be 5.2 mmol / g with respect to 0.0 g was added to start the reaction.
Since the pH decreased with the progress of the reaction, the reaction was performed for 120 minutes while maintaining the pH at 10 to 11 by adding a 0.5N aqueous sodium hydroxide solution dropwise.
After completion of the reaction, 0.1N hydrochloric acid was added for neutralization, followed by purification by repeated filtration and water washing to obtain oxidized cellulose whose fiber surface was oxidized. Subsequently, water contained in the oxidized cellulose was replaced with ethanol to obtain an oxidized cellulose suspension.

(Amine modification step)
Polyetheramine (trade name “JEFFAMINE M-2070” represented by the following formula having the same amount as the amount of carboxyl groups of ethanol and oxidized cellulose was added to the obtained oxidized cellulose suspension, weight average molecular weight: 2000, HUNTSMAN The product was diluted to 2% and homogenized once using a high-pressure homogenizer (pressure: 100 MPa). Ethanol was added to this until the modified cellulose fiber concentration was 0.75%. K. The mixture was stirred for 10 minutes at 8000 rpm using a homomixer (manufactured by PRIMIX) to obtain a modified cellulose fiber suspension [thickener (2)].

Example 1 (Preparation of cleansing cosmetics)
2 parts by weight of the thickener (1) obtained in Preparation Example 1 and 78 parts by weight of cetyl octoate (trade name “CEH”, manufactured by Higher Alcohol Industry Co., Ltd.) as an oil agent are mixed at 80 ° C. These are mixed by heating and stirring, then cooled to 25 ° C., and then polyoxyethylene (10) glyceryl monoisostearate (trade name “EMALEX GWIS-110”, manufactured by Nippon Emulsion Co., Ltd.) as a surfactant. ) 10 parts by weight and 10 parts by weight of polyoxyethylene (8) glyceryl monoisostearate (trade name “EMALEX GWIS-108”, manufactured by Nippon Emulsion Co., Ltd.) to obtain a cleansing cosmetic (1). . The viscosity of the obtained cleansing cosmetic (1) at 25 ° C. and a shear rate of 10 s ⁻¹ was 4500 mPa · s.

Examples 2-4, Comparative Examples 1-2
A cleansing cosmetic was obtained in the same manner as in Example 1 except that the formulation was changed to the formulation shown in the following table (unit: parts by weight).

(Evaluation)
The cleansing cosmetics obtained in the examples and comparative examples were filled in a pump-type container with a nozzle discharge port with a diameter of 2.5 mm and a discharge amount of 1.5 mL, and used by 20 female panelists for 2 weeks. , Usability with a pump-type container (can prevent dripping at the discharge port and splashing at the time of discharge), feeling of cleansing cosmetics (does not fall off between fingers when picked up in the hand, has good spreadability Or) Ease of washing is evaluated in 5 stages (+2: very good, +1: good, 0: normal, -1: bad, -2: very bad), and from the average value of the evaluation points, Cleansing cosmetics were comprehensively evaluated according to the following criteria.
<Evaluation criteria>
◎: 1.0 point or more ○: 0 point or more, less than 1.0 point ×: Less than 0 point

Thickener (1): The thickener obtained in Preparation Example 1 was used.
Thickener (2): The thickener obtained in Preparation Example 2 was used.
Thickener (3): Dibutyllauroylglutamide, trade name “GP-1”, Ajinomoto Co., Inc. thickener (4): Inulin stearate, trade name “Leopard ISK2”, manufactured by Chiba Flour Milling Co., Ltd.

Since the cleansing cosmetic of the present invention has an appropriate viscosity, it was excellent in usability and feeling when used in a pump-type container. Moreover, it could be easily washed away with water. On the other hand, the cleansing cosmetics obtained in Comparative Examples 1 and 2 were in the form of a solid gel with hysteresis. Therefore, when filling a pump type container and using it, discharge property was bad. Moreover, the spreadability was poor, and it was not possible to wash away easily with water.

（式中、Ｒ¹は炭素数１～３０の脂肪族炭化水素基を示し、ｎは０又は１を示す。ｍは１０～１００の整数を示し、ｍ個のＲ²は同一又は異なって炭素数２～４のアルキレン基を示す。Ｒ³は炭素数１～２０の脂肪族炭化水素基を示す）
［２］２５℃、せん断速度１０ｓ^-1における粘度が３００～６０００ｍＰａ・ｓであり、その上限は５８００ｍＰａ・ｓ、下限は５００ｍＰａ・ｓ、１０００ｍＰａ・ｓ、１５００ｍＰａ・ｓ、２０００ｍＰａ・ｓ、３０００ｍＰａ・ｓ、又は４０００ｍＰａ・ｓである、［１］に記載のクレンジング化粧料。
［３］Ｒ¹における脂肪族炭化水素基の炭素数は１～３０、３～３０、５～２５、１０～２０、又は１５～２０である、［１］又は［２］に記載のクレンジング化粧料。
［４］Ｒ¹における脂肪族炭化水素基が飽和脂肪族炭化水素基であり、メチル基、エチル基、プロピル基、イソプロピル基、ブチル基、イソブチル基、ｓ－ブチル基、ｔ－ブチル基、ペンチル基、ヘキシル基、デシル基、ラウリル基、ミリスチル基、ステアリル基からなる群より選択される直鎖状又は分岐鎖状アルキル基である、［１］～［３］のいずれか１つに記載のクレンジング化粧料。
［５］Ｒ¹における脂肪族炭化水素基が不飽和脂肪族炭化水素基であり、少なくとも１個の不飽和結合を有する脂肪族炭化水素基であり、二重結合及び三重結合から選択される少なくとも１個の不飽和結合を有し、不飽和結合の数は少なくとも１個、２個以上、１～６個又は１～３個から選択され、不飽和結合の数の上限は６個又は３個である、［１］～［４］のいずれか１つに記載のクレンジング化粧料。
［６］Ｒ¹における不飽和脂肪族炭化水素基が、少なくとも１個の二重結合を有する脂肪族炭化水素基、二重結合を１～６個又は１～３個有する直鎖状又は分岐鎖状の脂肪族炭化水素基であり、ビニル基、アリル基、１－ブテニル基、４－ヘキセニル基、５－ヘキセニル基、７－オクテニル基、９－デセニル基、１１－ドデセニル基、オレイル基からなる群より選択される、［１］～［５］のいずれか１つに記載のクレンジング化粧料。
［７］Ｒ¹が、二重結合を１～６個又は１～３個有し、炭素数１～３０、３～３０、５～２５、１０～２０、又は１５～２０の直鎖状又は分岐鎖状脂肪族炭化水素基である、［１］～［６］のいずれか１つに記載のクレンジング化粧料。
［８］Ｒ²における炭素数２～４のアルキレン基が、メチレン基、メチルメチレン基、ジメチルメチレン基、エチレン基、プロピレン基、トリメチレン基、テトラメチレン基からなる群より選択される直鎖状又は分岐鎖状のアルキレン基である、［１］～［７］のいずれか１つに記載のクレンジング化粧料。
［９］ｍは１０～１００の整数を示し、ｍの下限値は１５、２０、２５、又は３０であり、ｍの上限値は８０、７０、６０、又は５０である、［１］～［８］のいずれか１つに記載のクレンジング化粧料。
［１０］Ｒ³における炭素数１～２０の脂肪族炭化水素基は、メチル基、エチル基、プロピル基、イソプロピル基、ブチル基、イソブチル基、ｓ－ブチル基、ｔ－ブチル基、ペンチル基、ヘキシル基、デシル基、ドデシル基からなる群より選択される基を含む炭素数１～２０、１～１０、又は１～３のアルキル基；ビニル基、アリル基、１－ブテニル基からなる群より選択される基を含む炭素数２～２０、２～１０、又は２～３のアルケニル基；エチニル基又はプロピニル基から選択される基を含む炭素数２～２０、２～１０、又は２～３のアルキニル基である、［１］～［９］のいずれか１つに記載のクレンジング化粧料。
［１１］Ｒ³における炭素数１～２０の脂肪族炭化水素基は、炭素数１～１０のアルキル基、又は炭素数１～３のアルキル基である、［１］～［１０］のいずれか１つに記載のクレンジング化粧料。
［１２］変性セルロースファイバーにおける上記式（1-1）で表される基及び上記式（1-2）で表される基の平均の総置換度（上記式（1-1）で表される基の平均置換度及び上記式（1-2）で表される基の平均置換度の合計）が、０．０５～３．０であり、総置換度の上限は、２．８、２．７、又は２．６であり、総置換度の下限は、０．１、０．３、０．５、１．０、又は１．５である、［１］～［１１］のいずれか１つに記載のクレンジング化粧料。
［１３］油剤が、流動パラフィン、スクワランを含む炭化水素；ヒマワリ油、マカデミアナッツ油、アボガド油、アーモンド油、小麦胚芽油、米胚芽油、オリーブ油、ホホバ油、月見草油、ヤシ油、山茶花油、ローズヒップ油を含む天然油；イソノナン酸２－エチルへキシル、イソノナン酸イソノニル、イソノナン酸イソデシル、ラウリン酸ヘキシル、パルミチン酸イソプロピル、パルミチン酸オクチル、イソパルミチン酸オクチル、ミリスチン酸イソプロピル、オレイン酸デシル、オクタン酸セチル、２－エチルヘキサン酸セチル、オクタン酸イソセチル、イソステアリン酸イソプロピル、イソステアリン酸エチル、２－エチルヘキサン酸ステアリル、２－エチルヘキサン酸イソステアリル、トリ（カプリル／カプリン酸）グリセリン、トリ－２－エチルヘキサン酸グリセリンを含むエステル類；メチルポリシロキサン、メチルフェニルポリシロキサン、デカメチルシクロペンタシロキサンを含むシリコーン油；ラウリン酸、イソステアリン酸、オレイン酸を含む高級脂肪酸；ヘキサデシルアルコール、オレイルアルコールを含む高級アルコールの１種又は２種以上の組み合わせである、［１］～［１２］のいずれか１つに記載のクレンジング化粧料。
［１４］界面活性剤が、エステル型、エーテル型、エーテル・エステル型化合物を含む非イオン性界面活性剤である、［１］～［１３］のいずれか１つに記載のクレンジング化粧料。
［１５］エステル型化合物が、ジグリセリンモノステアレートを含むグリセリン脂肪酸エステル；ポリオキシエチレン（５）硬化ヒマシ油、ポリオキシエチレン（７）硬化ヒマシ油、ポリオキシエチレン（１０）硬化ヒマシ油、ポリオキシエチレン（２０）硬化ヒマシ油、ポリオキシエチレン（３０）硬化ヒマシ油、ポリオキシエチレン（４０）硬化ヒマシ油、ポリオキシエチレン（５０）硬化ヒマシ油、ポリオキシエチレン（６０）硬化ヒマシ油、ポリオキシエチレン（１００）硬化ヒマシ油を含むポリオキシエチレン硬化ヒマシ油；ポリオキシエチレン（３）グリセリルモノイソステアレート、ポリオキシエチレン（６）グリセリルモノイソステアレート、ポリオキシエチレン（８）グリセリルモノイソステアレート、ポリオキシエチレン（１０）グリセリルモノイソステアレート、ポリオキシエチレン（１５）グリセリルモノイソステアレート、ポリオキシエチレン（２０）グリセリルモノイソステアレート、ポリオキシエチレン（３０）グリセリルモノイソステアレート、ポリオキシエチレン（１０）グリセリルトリイソステアレート、ポリオキシエチレン（２０）グリセリルトリイソステアレート、ポリオキシエチレン（３０）グリセリルトリイソステアレート、ポリオキシエチレン（４０）グリセリルトリイソステアレートを含むポリオキシエチレングリセリン脂肪酸エステル；モノオレイン酸ソルビタン、モノステアリン酸ソルビタンを含むソルビタン脂肪酸エステル；ポリオキシエチレン（６）ソルビタンモノラウレート、ポリオキシエチレン（２０）ソルビタンモノラウレート、ポリオキシエチレン（２０）ソルビタンモノステアレート、ポリオキシエチレン（２０）ソルビタンモノオレエートを含むポリオキシエチレンソルビタン脂肪酸エステル；ポリオキシエチレン（８）トリメチロールプロパントリミリステート、ポリオキシエチレン（２０）トリメチロールプロパントリミリステート、ポリオキシエチレン（３０）トリメチロールプロパントリミリステートを含むポリオキシエチレントリメチロールプロパン脂肪酸エステル；ポリオキシエチレン（３０）ソルビトールテトラオレエート、ポリオキシエチレン（４０）ソルビトールテトラオレエートを含むポリオキシエチレンソルビトール脂肪酸エステル；ポリオキシエチレン（６）ジイソステアレート、ポリオキシエチレン（１２）ジイソステアレートを含むポリオキシエチレン脂肪酸エステルからなる群より選択される、［１４］に記載のクレンジング化粧料。
［１６］エーテル型化合物が、ポリオキシエチレンオクチルフェニルエーテル、ポリオキシエチレンノニルフェニルエーテルを含むポリオキシエチレンアルキルアリールエーテル、およびポリオキシエチレンアルキルエーテルからなる群より選択される［１４］又は［１５］に記載のクレンジング化粧料。
［１７］エーテル・エステル型化合物が、ポリオキシエチレン（５）セチルエーテルステアレート又はポリオキシエチレン（１０）セチルエーテルステアレートからなる群より選択される、［１４］～［１６］のいずれか１つに記載のクレンジング化粧料。 As a summary of the above, the configuration of the present invention and variations thereof will be described below.
[1] A cleansing cosmetic comprising a thickener (A), an oil (B), and a surfactant (C), wherein the thickener (A) is represented by the following formula (1-1): The modified cellulose fiber having a structure in which the group represented by formula (1-2) and / or the group represented by the following formula (1-2) is bonded to the pyranose ring constituting the cellulose fiber is 0.1% with respect to 100 parts by weight of the oil agent (B). A cleansing cosmetic containing 10.0 parts by weight.

(Wherein R ¹ represents an aliphatic hydrocarbon group having 1 to 30 carbon atoms, n represents 0 or 1, m represents an integer of 10 to 100, and m R ^{2 s} are the same or different and represent carbon atoms. And represents an alkylene group having 2 to 4. R ³ represents an aliphatic hydrocarbon group having 1 to 20 carbon atoms.
[2] The viscosity at 25 ° C. and a shear rate of 10 s ⁻¹ is 300 to 6000 mPa · s, the upper limit is 5800 mPa · s, the lower limit is 500 mPa · s, 1000 mPa · s, 1500 mPa · s, 2000 mPa · s, 3000 mPa · s Or the cleansing cosmetic according to [1], which is 4000 mPa · s.
[3] The cleansing makeup according to [1] or [2], wherein the aliphatic hydrocarbon group in R ¹ has 1 to 30, 3 to 30, 5 to 25, 10 to 20, or 15 to 20 carbon atoms. Fee.
[4] The aliphatic hydrocarbon group in R ¹ is a saturated aliphatic hydrocarbon group, and is methyl group, ethyl group, propyl group, isopropyl group, butyl group, isobutyl group, s-butyl group, t-butyl group, pentyl A linear or branched alkyl group selected from the group consisting of a group, a hexyl group, a decyl group, a lauryl group, a myristyl group, and a stearyl group, according to any one of [1] to [3] Cleansing cosmetics.
[5] The aliphatic hydrocarbon group in R ¹ is an unsaturated aliphatic hydrocarbon group, an aliphatic hydrocarbon group having at least one unsaturated bond, and at least selected from a double bond and a triple bond It has one unsaturated bond, the number of unsaturated bonds is selected from at least 1, 2 or more, 1-6 or 1-3, and the upper limit of the number of unsaturated bonds is 6 or 3 The cleansing cosmetic according to any one of [1] to [4].
[6] The unsaturated aliphatic hydrocarbon group in R ¹ is an aliphatic hydrocarbon group having at least one double bond, a linear or branched chain having 1 to 6 or 1 to 3 double bonds An aliphatic hydrocarbon group comprising a vinyl group, an allyl group, a 1-butenyl group, a 4-hexenyl group, a 5-hexenyl group, a 7-octenyl group, a 9-decenyl group, an 11-dodecenyl group, and an oleyl group The cleansing cosmetic according to any one of [1] to [5], selected from the group.
[7] R ¹ is a straight chain having 1 to 6 or 1 to 3 double bonds and having 1 to 30, 3 to 30, 5 to 25, 10 to 20, or 15 to 20 carbon atoms, or The cleansing cosmetic according to any one of [1] to [6], which is a branched aliphatic hydrocarbon group.
[8] alkylene group R ² having 2 to 4 carbon atoms in the methylene group, methylmethylene group, dimethylmethylene group, an ethylene group, a propylene group, trimethylene group, straight-chain is selected from the group consisting of tetramethylene group or The cleansing cosmetic according to any one of [1] to [7], which is a branched alkylene group.
[9] m represents an integer of 10 to 100, the lower limit value of m is 15, 20, 25, or 30, and the upper limit value of m is 80, 70, 60, or 50. [1] to [ 8] The cleansing cosmetic according to any one of [8].
[10] The aliphatic hydrocarbon group having 1 to 20 carbon atoms in R ³ is methyl group, ethyl group, propyl group, isopropyl group, butyl group, isobutyl group, s-butyl group, t-butyl group, pentyl group, An alkyl group having 1 to 20, 1 to 10, or 1 to 3 carbon atoms including a group selected from the group consisting of hexyl, decyl, and dodecyl; from the group consisting of vinyl, allyl, and 1-butenyl An alkenyl group having 2 to 20, 2 to 10, or 2 to 3 carbon atoms including a selected group; 2 to 20, 2 to 10, or 2 to 3 carbon atoms including a group selected from an ethynyl group or a propynyl group The cleansing cosmetic according to any one of [1] to [9], which is an alkynyl group of
[11] The aliphatic hydrocarbon group having 1 to 20 carbon atoms in R ³ is any one of [1] to [10], which is an alkyl group having 1 to 10 carbon atoms or an alkyl group having 1 to 3 carbon atoms. Cleansing cosmetics according to one.
[12] Average total substitution degree of the group represented by the above formula (1-1) and the group represented by the above formula (1-2) in the modified cellulose fiber (represented by the above formula (1-1)) The average degree of substitution of the group and the sum of the average degree of substitution of the group represented by the above formula (1-2)) is 0.05 to 3.0, and the upper limit of the total degree of substitution is 2.8, 2. 7 or 2.6, and the lower limit of the total degree of substitution is 0.1, 0.3, 0.5, 1.0, or 1.5, and any one of [1] to [11] Cleansing cosmetics as described in 1.
[13] Hydrocarbons containing liquid paraffin and squalane; sunflower oil, macadamia nut oil, avocado oil, almond oil, wheat germ oil, rice germ oil, olive oil, jojoba oil, evening primrose oil, coconut oil, mountain tea flower oil, rose Natural oils including hip oil; 2-ethylhexyl isononanoate, isononyl isononanoate, isodecyl isononanoate, hexyl laurate, isopropyl palmitate, octyl palmitate, octyl isopalmitate, isopropyl myristate, decyl oleate, octoate Cetyl, cetyl 2-ethylhexanoate, isocetyl octanoate, isopropyl isostearate, ethyl isostearate, stearyl 2-ethylhexanoate, isostearyl 2-ethylhexanoate, tri (capryl / capric acid) glycerin, -Esters containing glycerin 2-ethylhexanoate; silicone oils containing methylpolysiloxane, methylphenylpolysiloxane, decamethylcyclopentasiloxane; higher fatty acids including lauric acid, isostearic acid, oleic acid; hexadecyl alcohol, oleyl alcohol The cleansing cosmetic according to any one of [1] to [12], which is one or a combination of two or more higher alcohols containing
[14] The cleansing cosmetic according to any one of [1] to [13], wherein the surfactant is a nonionic surfactant containing an ester type, ether type, or ether / ester type compound.
[15] Glycerin fatty acid ester in which the ester type compound contains diglycerin monostearate; polyoxyethylene (5) hydrogenated castor oil, polyoxyethylene (7) hydrogenated castor oil, polyoxyethylene (10) hydrogenated castor oil, poly Oxyethylene (20) hydrogenated castor oil, polyoxyethylene (30) hydrogenated castor oil, polyoxyethylene (40) hydrogenated castor oil, polyoxyethylene (50) hydrogenated castor oil, polyoxyethylene (60) hydrogenated castor oil, poly Polyoxyethylene hydrogenated castor oil including oxyethylene (100) hydrogenated castor oil; polyoxyethylene (3) glyceryl monoisostearate, polyoxyethylene (6) glyceryl monoisostearate, polyoxyethylene (8) glyceryl monoiso Stearate, polyoxyethylene (10) Glyceryl monoisostearate, polyoxyethylene (15) glyceryl monoisostearate, polyoxyethylene (20) glyceryl monoisostearate, polyoxyethylene (30) glyceryl monoisostearate, polyoxyethylene (10 ) Polyoxyethylene glycerol fatty acid ester containing glyceryl triisostearate, polyoxyethylene (20) glyceryl triisostearate, polyoxyethylene (30) glyceryl triisostearate, polyoxyethylene (40) glyceryl triisostearate Sorbitan monooleate, sorbitan fatty acid ester containing sorbitan monostearate; polyoxyethylene (6) sorbitan monolaurate, polyoxyethylene (20) sorbitan Polyoxyethylene sorbitan fatty acid ester containing nolaurate, polyoxyethylene (20) sorbitan monostearate, polyoxyethylene (20) sorbitan monooleate; polyoxyethylene (8) trimethylolpropane trimyristate, polyoxyethylene (20 ) Trimethylolpropane trimyristate, polyoxyethylene (30) polyoxyethylene trimethylolpropane fatty acid ester containing trimethylolpropane trimyristate; polyoxyethylene (30) sorbitol tetraoleate, polyoxyethylene (40) sorbitol tetra Polyoxyethylene sorbitol fatty acid ester containing oleate; polyoxyethylene (6) diisostearate, polyoxyethylene (12) diisostearate The cleansing cosmetic according to [14], selected from the group consisting of polyoxyethylene fatty acid esters containing allate.
[16] The ether type compound is selected from the group consisting of polyoxyethylene octyl phenyl ether, polyoxyethylene alkyl aryl ether including polyoxyethylene nonyl phenyl ether, and polyoxyethylene alkyl ether [14] or [15] Cleansing cosmetics as described in 1.
[17] Any one of [14] to [16], wherein the ether-ester type compound is selected from the group consisting of polyoxyethylene (5) cetyl ether stearate or polyoxyethylene (10) cetyl ether stearate Cleansing cosmetics as described in 1.

The cleansing cosmetic of the present invention has an appropriate viscosity when the oil agent is thickened by the modified cellulose fiber, and the viscosity is stably maintained over time. It is hard to fall off and has excellent spreadability. In addition, when filled in a pump-type container, it is excellent in dischargeability and hardly leaks from the discharge port of the container. In addition, the cleansing cosmetic composition of the present invention is excellent in the detergency of oily stains, can easily become familiar with skin stains and makeup stains, and can be washed away by rinsing with water. Therefore, the cleansing cosmetic composition of the present invention is suitable as a cleansing agent for oily skin dirt and makeup dirt used by filling a pump-type container.

Claims (2)

A cleansing cosmetic comprising a thickener (A), an oil (B) and a surfactant (C), wherein the thickener (A) is a group represented by the following formula (1-1): / Or a modified cellulose fiber having a structure in which a group represented by the following formula (1-2) is bonded to a pyranose ring constituting the cellulose fiber is used in an amount of 0.1 to 10.5 with respect to 100 parts by weight of the oil agent (B). Cleansing cosmetic containing 0 part by weight.

(Wherein R ¹ represents an aliphatic hydrocarbon group having 1 to 30 carbon atoms, n represents 0 or 1, m represents an integer of 10 to 100, and m R ^{2 s} are the same or different and represent carbon atoms. And represents an alkylene group having 2 to 4. R ³ represents an aliphatic hydrocarbon group having 1 to 20 carbon atoms. 25 ° C., a viscosity of 300 ~ 6000 mPa · s at a shear rate of 10s ^-1, the cleansing cosmetic composition of claim 1.