JP7201335B2 - oily cosmetics - Google Patents

Description

The present invention relates to oily cosmetics.

Various studies have been made for oily cosmetics such as lipsticks in order to obtain a beautiful finish and a smooth feel. For example, Patent Literature 1 describes that a makeup cosmetic containing an oil-soluble dye, a higher fatty acid metal salt, and an oil component is capable of vivid fluorescent coloration and has excellent transparency (clearness). In addition, Patent Document 2 describes a lip cosmetic containing a dextrin fatty acid ester, a metallic soap, an ester oil that is liquid at room temperature, and a hydrocarbon oil that is liquid at room temperature. Lightness, smoothness), good transparency, and excellent gloss and make-up lasting.

WO2016/117637 Japanese Patent Application Laid-Open No. 2006-219486

Thus, oily cosmetics containing metallic soaps are excellent in longevity and oil-gelling properties, but have the problem of causing color unevenness during and after application.

The present inventors have found that an oil-based cosmetic in which a specific acylated polysaccharide is combined with a metal soap and a liquid oil in a specific ratio suppresses color unevenness during and after application, and improves spreadability during application. It was found that when the present oil-based cosmetic was applied to the lips, the lips after application had a plump three-dimensional effect.

The present invention provides the following components (A), (B) and (C):
(A) has a polysaccharide skeleton in the main chain, and 45 to 95 mol% of all hydroxyl groups are groups —O—M—R (M is CH ₂ or a carbonyl group C=O, and R has 3 to 40 carbon atoms; 0.01 to 30 mass% of a polysaccharide derivative substituted with a straight-chain or branched-chain alkyl group or alkenyl group,
(B) metal soap 0.02 to 10% by mass,
(C) 10 to 98% by mass of oil component liquid at 25°C
It relates to an oily cosmetic containing

The oil-based cosmetic of the present invention suppresses color unevenness during and after application, spreads well during application, and gives a plump three-dimensional effect to the lips after application.

The polysaccharide derivative of the component (A) used in the present invention is not limited as long as it has a polysaccharide skeleton in its main chain. Examples of raw polysaccharides that form the polysaccharide skeleton include cellulose, cellulose derivatives, pullulan, xanthan gum, Galactomannans such as sclerotium gum, gum arabic, polysaccharide produced by Alcaligenes, carrageenan, hyaluronic acid, tuberose polysaccharide, white fungus polysaccharide, locust bean gum, guar gum, tara gum, and fenugreek gum.
Among these raw polysaccharides, cellulose, cellulose derivatives and pullulan are preferred, and cellulose and cellulose derivatives are more preferred.

Examples of cellulose derivatives include short-chain acylated cellulose such as acetyl cellulose and acetylbutyl cellulose, short-chain alkyl etherified cellulose such as methyl cellulose and ethyl cellulose, hydroxyalkyl group-, glyceryl ether group-, and (mono)alkyl glyceryl ether-modified Examples include cellulose, and more specifically, hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxypropylmethyl cellulose, glyceryl cellulose, methylglyceryl cellulose and the like are preferred.
Furthermore, as the cellulose derivative as a raw material for production, those having the following constitutional units are preferable.

(Wherein, R ' represents a linear or branched alkylene group having 2 to 8 carbon atoms, and n represents a number at which the average number of added moles of R'O per glucose unit is 0.1 to 10)

In the structural unit, R′ is preferably a linear or branched alkylene group having 2 to 4 carbon atoms, more preferably an ethylene group or a propylene group. Further, n is preferably a number at which the average number of added moles of R'O per glucose unit is 0.3 to 5, more preferably a number at which it is 0.5 to 4.5, and a number at which it is 1 to 4. More preferred.

Preferred raw material cellulose derivatives include hydroxyethyl cellulose and hydroxypropyl cellulose, with hydroxypropyl cellulose being more preferred.
In addition, the weight average molecular weight (Mw) of the raw material cellulose derivative is preferably 10,000 to 4,000,000, more preferably 100,000 to 3,000,000, and still more preferably 300,000 to 200,000 from the viewpoint of solubility in oil and feel. Ten thousand.

Further, among raw polysaccharides, pullulan preferably has a weight average molecular weight of 50,000 to 300,000.

In the polysaccharide derivative of component (A), part of the hydroxyl groups of the starting polysaccharide are substituted with groups —O—M—R.
In the substituent group —OMR, M represents CH ₂ or a carbonyl group C═O, and R is a straight or branched alkyl or alkenyl group having 3 to 40 carbon atoms.
(i) straight-chain alkyl groups include butyl, pentyl, hexyl, heptyl, octyl, nonyl, decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, and hexadecyl groups; heptadecyl group, octadecyl group, nonadecyl group, icosyl group, henicosyl group, docosyl group, tricosyl group, tetracosyl group, pentacosyl group, hexacosyl group, heptacosyl group, octacosyl group, nonacosyl group, triacontyl group, hentriacontyl group, dotriacontyl group, A tritriacontyl group, a tetratriacontyl group, a pentatriacontyl group, a hexatriacontyl group, a heptatriacontyl group, an octatriacontyl group, a nonatriacontyl group and a tetracontyl group.

(ii) Branched alkyl groups include methylpentyl, methylhexyl, methylheptyl, methyloctyl, methylnonyl, methylundecyl, methylheptadecyl, ethylhexadecyl, methyloctadecyl, and propyl. pentadecyl group, 2-hexyldecyl group, 2-octyldodecyl, 2-heptylundecyl group, 2-decyltetradecyl group, 2-dodecylhexadecyl group, 2-tetradecyloctadecyl group, 2-hexadecylicosyl group etc.

(iii) linear alkenyl groups include dodecenyl, tridecenyl, tetradecenyl, pentadecenyl, hexadecenyl, heptadecenyl, octadecenyl, nonadecenyl, icosenyl, henicosenyl, docosenyl, tricosenyl, tetracosenyl, A pentacosenyl group, a hexacocenyl group, a heptacosenyl group, an octacocenyl group, and the like can be mentioned.
(iv) Branched alkenyl groups include isotridecenyl, isooctadecenyl, isotriacontenyl, 2-butyloctenyl, 2-hexyldecenyl, 2-octyldodecenyl, and 2-decyltetra. A decenyl group, a 2-dodecylhexadecenyl group and the like can be mentioned.

Among these, R is preferably a straight-chain alkyl group from the viewpoint of maintaining a smooth feeling on the lips and skin. From the standpoint of ease of spreading during application and good adhesion, the number of carbon atoms is preferably 9 to 21, more preferably 11 to 17, and even more preferably 15.

The -OMR substitution rate of the hydroxyl group is 45 mol% or more from the viewpoints of enhancing solubility in oil agents, suppressing color unevenness during and after application, and facilitating spreadability during application. 48 mol% or more is preferable, 51 mol% or more is more preferable, 55 mol% or more is more preferable, and from the viewpoint of improving resistance to twisting and water resistance, it is 95 mol% or less, preferably 94 mol% or less, more preferably 92 mol% or less, and 85 mol%. % or less is more preferable. Further, the substitution rate of the hydroxyl group --OMR is 45 to 95 mol %, preferably 48 to 94 mol %, more preferably 51 to 92 mol %, and even more preferably 55 to 85 mol %.
It is preferable that the hydroxyl group remains in a moderate amount from the viewpoint of the resistance to twisting of the coating film, and is preferably 5 mol% or more, more preferably 6 mol% or more, further preferably 8 mol% or more, and even more preferably 15 mol% or more. , is preferably 55 mol % or less, more preferably 52 mol % or less, even more preferably 49 mol % or less, and even more preferably 45 mol % or less. The residual hydroxyl group ratio is preferably 5 to 55 mol %, more preferably 6 to 52 mol %, even more preferably 8 to 49 mol %, and even more preferably 15 to 45 mol %.

The weight-average molecular weight of the polysaccharide derivative of component (A) is preferably 100,000 or more, more preferably 200,000 or more, more preferably 200,000 or more, from the viewpoint of maintaining solubility in oil components and ease of spreading on the lips and skin. 10,000 or more is more preferable, 500,000 or more is still more preferable, 5 million or less is preferable, 4 million or less is more preferable, 3 million or less is still more preferable, and 2 million or less is even more preferable.
The mass average molecular weight (Mw) is determined by gel permeation chromatography (using a chloroform solvent, a calibration curve with linear polystyrene as a standard, and a refractive index detector).

The polysaccharide derivative of component (A) is obtained by reacting a raw polysaccharide with an acid halide having a linear or branched alkyl or alkenyl group having 3 to 40 carbon atoms to obtain a portion of the total hydroxyl groups of the raw cellulose derivative. , preferably 45 to 95 mol %.
Those in which M is CH ₂ can be produced by reacting a polysaccharide with a corresponding sulfonic acid ester such as alkyl halide or alkyl mesylate in the presence of a base. Those whose main chain is composed of a cellulose skeleton can also be obtained by transesterification (acidorisis) of acetylcellulose. According to this method, a cellulose ester derivative having an extremely low residual amount of hydroxyl groups can be obtained.

Specifically, hydroxyethyl cellulose laurate, hydroxyethyl cellulose myristate, hydroxyethyl cellulose palmitate, hydroxyethyl cellulose stearate, hydroxyethyl cellulose behenate; hydroxypropyl cellulose laurate, hydroxypropyl cellulose myristate, hydroxy Propyl cellulose palmitate, hydroxypropyl cellulose stearate, hydroxypropyl cellulose behenate; hydroxyethyl methyl cellulose laurate, hydroxyethyl methyl cellulose myristate, hydroxyethyl methyl cellulose palmitate, hydroxyethyl methyl cellulose stearate, hydroxyethyl methylcellulose behenate; hydroxypropylmethylcellulose laurate, hydroxypropylmethylcellulose myristate, hydroxypropylmethylcellulose palmitate, hydroxypropylmethylcellulose stearate, hydroxypropylmethylcellulose behenate; pullulan laurate, pullulan myristate, pullulan palmitate, pullulan stearate, pullulan behenate and the like. Among them, hydroxypropyl cellulose laurate, hydroxypropyl cellulose myristate, hydroxypropyl cellulose palmitate, and hydroxypropyl cellulose stearin, which suppress color unevenness during and after application and improve spreadability during application. acid ester, hydroxypropylcellulose behenate, pullulan laurate, pullulan myristate, pullulan palmitate, pullulan stearate, pullulan behenate, and at least hydroxypropylcellulose palmitate and pullulan myristate. more preferred.

The polysaccharide derivative of component (A) can be used alone or in combination of two or more. From the viewpoint of obtaining, it is 0.01% by mass or more in the entire composition, preferably 0.05% by mass or more, more preferably 0.1% by mass or more, 30% by mass or less, and preferably 20% by mass or less , is more preferably 5% by mass or less, and even more preferably 3% by mass or less. In addition, the content of component (A) is 0.01 to 30% by mass in the total composition, preferably 0.05 to 20% by mass, more preferably 0.1 to 5% by mass, and 0.1 to 3% by mass is more preferred.

The metal soap of the component (B) may be any one that is used in ordinary cosmetics, such as the general formula (1):
(R ¹ COO) _m X (1)
(Wherein, R ¹ represents an aliphatic hydrocarbon group having 10 to 18 carbon atoms, X represents aluminum, zinc, magnesium, calcium, lithium or barium, and m represents the valence of metal X)
Those represented by are mentioned.

In formula (1), R ¹ is preferably an alkyl group having 11 to 17 carbon atoms, such as lauryl, myristyl, palmityl and stearyl. Moreover, as M, aluminum, zinc, and magnesium are preferable.
Specific examples of metal soaps of component (B) include zinc myristate, magnesium myristate, zinc palmitate, zinc stearate, magnesium stearate, aluminum stearate, and calcium stearate.
Among these, aluminum stearate, zinc stearate, and magnesium myristate are preferable, and aluminum stearate is more preferable, from the viewpoint of excellent thickening effect of the oil component and improvement of spreadability during application.

One or more metal soaps can be used as the component (B). 02% by mass or more, preferably 0.1% by mass or more, more preferably 0.2% by mass or more, and 10% by mass or less, preferably 5% by mass or less, and more preferably 2% by mass or less. The content of component (B) is 0.02 to 10% by mass, preferably 0.1 to 5% by mass, more preferably 0.2 to 2% by mass in the total composition.

In the present invention, the mass ratio (A)/(B) of component (A) to component (B) suppresses color unevenness during and after application, and gives the lips a plump, three-dimensional effect after application. is preferably 0.2 or more, more preferably 0.5 or more, still more preferably 1 or more, preferably 20 or less, more preferably 10 or less, and more preferably 6 or less. The mass ratio (A)/(B) of component (A) to component (B) is preferably 0.2-20, more preferably 0.5-10, and even more preferably 1-6.

The oil component that is liquid at 25° C., which is the component (C) used in the present invention, is an oil component that has fluidity at 25° C., and includes a pasty oil component as long as it has fluidity.
The (C) oil component that is liquid at 25° C. may be one used in ordinary cosmetics, such as liquid paraffin, light isoparaffin, liquid isoparaffin, mineral oil, polybutene, polyisobutene, hydrogenated polyisobutene, and water. Linear or branched hydrocarbon oils such as added polydecene, squalane, squalene; avocado oil, macadamia nut oil, olive oil, rapeseed oil, sesame oil, wheat germ oil, linseed oil, cottonseed oil, soybean oil, palm oil, coconut oil, castor oil , jojoba oil, sunflower oil, camellia oil, corn oil; animal oils such as liquid lanolin; isopropyl myristate, octyldodecyl myristate, isopropyl isostearate, isononyl isononanoate, butyl stearate, oleyl oleate, isotridecyl isononanoate , isostearyl myristate, octyldodecyl ricinoleate, octyl hydroxystearate, diglyceryl monoisostearate, ethylhexyl palmitate, cetyl ethylhexanoate, octyl methoxycinnamate, tocopheryl acetate, propylene carbonate, diisostearyl malate, dicapryl Propylene glycol acid, neopentyl glycol dicaprate, neopentyl glycol diethylhexanoate, diglyceryl diisostearate, propanediol diisostearate, glyceryl monomyristate monoisostearate, glyceryl diisostearate, glyceryl triisostearate, di(capric acid/caprylic acid) Acid) Propanediol, tri(caprylic/capric) glyceryl, glyceryl tri-2-ethylhexanoate, triethylhexanoin, trimethylolpropane tri-2-ethylhexanoate, trimethylolpropane triisostearate, pentaeryth tetraoctanoate lytyl, pentaerythrityl tetraethylhexanoate, pentaerythritol tetraisostearate, polyglyceryl-2 isostearate, polyglyceryl-2 diisostearate, polyglyceryl triisostearate-2, polyglyceryl-2 tetraisostearate, polyglyceryl-6 octacaprylate, (isostearin acid/sebacic acid) ditrimethylolpropane oligoester, dipentaerythrityl tripolyhydroxystearate, di(phytosteryl/octyldodecyl) lauroyl glutamate, di(phytos) lauroyl glutamate teryl, behenyl, octyldodecyl), trehalose esters isostearate, dipentaerythrityl tetraisostearate, dipentaerythrityl pentaisostearate, ethylhexyl hydroxystearate, phytosterol fatty acid ester, cholesterol fatty acid ester, polyglycerin fatty acid ester, pentaerythritol fatty acid ester, dl-α -fatty acid esters such as tocopherol and dl-α-tocopherol nicotinate; higher alcohols such as octyldodecanol; diphenyl dimethicone, dimethylpolysiloxane, methylcyclopolysiloxane, methylphenylpolysiloxane, methylhydrogenpolysiloxane, higher alcohol-modified organo Silicone oils such as polysiloxane, tris(trimethylsiloxy)methylsilane, and trimethylpentaphenyltrisiloxane; fluorine oils such as fluoropolyether and perfluoroalkyl ether silicone; creams and pastes such as trilanolin fatty acid glyceryl, soft lanolin fatty acid, petrolatum , branched or hydroxylated fatty acid cholesteryl, dipentaerythritol fatty acid ester (hexaoxystearate dipentaerythritol, etc.), hydrogenated castor oil isostearate, hydrogenated castor oil monohydroxystearate, tri (capryl, caprin, myristic, stearin) acid) glyceride, myristyl lactate, hydrogenated castor oil dimer dilinoleate, dimer dilinoleic acid (phytosteryl/isostearyl/cetyl/stearyl/behenyl), phytosteryl oleate, di(octyldodecyl/phytosteryl/behenyl) lauroyl glutamate, etc. mentioned.

Component (C) includes at least isotridecyl isononanoate, octyldodecanol, hydrogenated polyisobutene, and lauroyl glutamic acid in order to uniformly disperse component (A) and component (B) and reduce the weight of spread during application. It preferably contains one or more selected from di(octyldodecyl/phytosteryl/behenyl), di(phytosteryl/octyldodecyl) lauroylglutamate, and tri(caprylic/capric)glyceryl.

The oil component of component (C) can be used alone or in combination of two or more. It is 10% by mass or more in the composition, preferably 30% by mass or more, more preferably 50% by mass or more, and 98% by mass or less, preferably 90% by mass or less, and more preferably 85% by mass or less. The content of component (C) is 10 to 98% by mass, preferably 30 to 90% by mass, more preferably 50 to 85% by mass in the total composition.

In the present invention, the mass ratio of the total amount of components (B) and (C) to component (A) ((B) + (C)) / (A)) suppresses color unevenness during and after coating. 5 or more is preferable, 15 or more is more preferable, 25 or more is more preferable, 600 or less is preferable, 300 or less is more preferable, and 180 or less is further preferable in terms of obtaining a plump three-dimensional effect on the lips after application. preferable. Further, the mass ratio of the total amount of components (B) and (C) to component (A) ((B) + (C)) / (A)) is preferably 5 to 600, more preferably 15 to 300, 25 to 180 are more preferred.

Furthermore, the oil-based cosmetic of the present invention can contain (D) a wax that is solid at 25°C. The term "solid at 25°C" refers to a substance that exhibits solid properties at 25°C and has a melting point of 61°C or higher.
The wax that is solid at 25° C. is not limited as long as it is used in ordinary cosmetics, and examples thereof include mineral waxes such as ozokerite and ceresin; petroleum waxes such as paraffin and microcrystalline wax; and Fischer-Tropsch wax. , synthetic hydrocarbon waxes such as polyethylene wax; vegetable waxes such as carnauba wax, candelilla wax, rice wax, wood wax, sunflower wax, hydrogenated jojoba oil; animal waxes such as beeswax and whale wax; silicone wax, fluorine and synthetic waxes such as synthetic waxes and synthetic beeswax.

The wax, which is solid at 25°C, imparts appropriate hardness to the oil-based cosmetic, suppresses the seepage of oil, and imparts moisture. The following are more preferred.

In addition, the wax that is solid at 25°C preferably has a penetration of 150 or less at 25°C from the viewpoints of imparting appropriate hardness to the oil-based cosmetic, suppressing the seepage of oil, and imparting moisture. , 110 or less, and at least from the point of suppressing roughness in the initial stage of application, it is preferable that the wax contains a wax that is solid at 25° C. and has a penetration of 15 or more and 110 or less.
Here, the penetration is measured by inserting a specified needle (needle mass 2.5±0.02 g, needle holder mass 47.5±0.02 g, Mass of weight 50 ± 0.05 g) is measured for 5 seconds, and the value obtained by multiplying the penetration distance (mm) by 10 is the penetration. 5.4 (1991).

Solid waxes having a penetration of 150 or less at 25° C. include mineral waxes, petroleum waxes and synthetic hydrocarbon waxes. Among them, ceresin, microcrystalline wax, paraffin wax, and synthetic hydrocarbon waxes having a penetration of 110 or less are preferable because they suppress the dullness of the appearance color, and the durability of the coating film and the performance of moisturizing are high. From the viewpoint of suppressing the roughness of the coating, it is preferable that at least microcrystalline wax and paraffin wax with a penetration of 15 or more and 110 or less are included.
As these waxes, commercially available products can be used, for example, Ceresin #810 (Nikko Rica), etc.; Paracera M (manufactured by Paramelt), Hi-Mic-1045, 1070, 2045, HNP-0190 (manufactured by Nippon Seiro Co., Ltd.), etc.; , 5, 9 (manufactured by Nippon Seiro Co., Ltd.), etc.; as synthetic hydrocarbon waxes, lip wax A-4 (manufactured by Nippon Natural Products Co., Ltd.), PERFORMALENE 400, 655, PL (manufactured by NEW PHASE TECHNOLOGIES), etc. mentioned.

The wax that is solid at 25° C. of component (D) can be used alone or in combination of two or more. From the viewpoint that it is difficult to form, it is preferably 1% by mass or more, more preferably 6% by mass or more, preferably 20% by mass or less, and more preferably 15% by mass or less in the entire composition. The content of wax that is solid at 25° C. is preferably 1 to 20% by mass, more preferably 6 to 15% by mass, in the total composition.

Furthermore, the oily cosmetic of the present invention can contain powder. Such powders are not limited as long as they are used in ordinary cosmetics, and extender pigments, coloring pigments, luster pigments and the like can be used.
Examples of extender pigments include silicic acid, silicic anhydride, magnesium silicate, talc, sericite, mica, kaolin, clay, bentonite, bismuth oxychloride, zirconium oxide, magnesium oxide, aluminum oxide, calcium sulfate, barium sulfate, Inorganic pigments such as magnesium sulfate, calcium carbonate, and magnesium carbonate, and composite powders thereof are included.

Examples of coloring pigments include metal oxides such as titanium oxide, zinc oxide, yellow iron oxide, red iron oxide, black iron oxide, Prussian blue, ultramarine blue, chromium oxide, and chromium hydroxide; metal complexes such as manganese violet and cobalt titanate; inorganic pigments such as carbon black; organic pigments such as tar pigments and lake pigments; natural pigments such as carmine;

Bright pigments include titanium oxide, iron oxide, silicon oxide, Prussian blue, chromium oxide, chromium hydroxide, gold, and silver on the surface of plate-like powders such as mica, synthetic phlogopite, glass, silica, talc, and alumina. , carmine, coated with one or two or more coloring agents such as organic pigments, etc.; It is possible to use a product obtained by cutting a roll into an arbitrary shape.
These powders can be used as they are, or can be used after being subjected to various surface treatments such as water-repellent treatment, water-repellent/oil-repellent treatment, and the like.

One or two or more types of powder can be used. 01% by mass or more is preferable, 0.1% by mass or more is more preferable, 20% by mass or less is preferable, and 10% by mass or less is more preferable. Also, the powder content is preferably 0.01 to 20% by mass, more preferably 0.1 to 10% by mass, in the total composition.

Furthermore, the oil-based cosmetic of the present invention contains, in addition to the above components, components used in ordinary cosmetics, such as oil components other than component (C), surfactants, lower alcohols, polyhydric alcohols, and component (A). Contains other polymer compounds, UV absorbers, antioxidants, dyes, fragrances, preservatives, pH adjusters, blood circulation promoters, anti-inflammatory agents, cooling agents, bactericides, skin activators, moisturizers, water, etc. can do.

The oil-based cosmetic composition of the present invention can be produced by a conventional method, and may be in any of solid, semi-solid, gel, and liquid forms.

The oil-based cosmetic of the present invention is a cosmetic having an oily agent as a continuous phase, and is used for the skin, lips, eyelashes, nails and hair, preferably for the lips. Lip cosmetics such as lipstick, lip balm, lip gloss, and lip liner; Makeup cosmetics such as mascara, eyeliner, eye shadow, cheek color, foundation, and concealer; Cream, milky lotion, serum, massager, deodorant, sunscreen It can be a screen, a hair restorer, a hair color, a hair wax, a hair foam, and the like. Among them, it is suitable as a lip cosmetic selected from lipstick, lip balm, lip gloss and lip liner.

The oil-based cosmetic of the present invention can be applied not only directly, but also to an application site such as skin, lips, eyelashes, nails, hair, etc. using a cosmetic applicator.

When the oil-based cosmetic of the present invention is liquid, it can be stored in a container to be taken out with a cosmetic applicator. The container to be taken out is preferably a bottle container, a jar container, or a tube container. Bottle containers and tube containers are more preferable from the viewpoint of suppressing dripping of liquid.

A cosmetic applicator for taking out an oily cosmetic stored in a container has an application surface for applying the cosmetic and a support shaft to which the applicator is connected at the tip. Specific examples include chips, sponges, puffs, and brushes. Among them, a cosmetic applicator having an application surface for applying a cosmetic, an application part made of a conical or flat body, and a support shaft connecting the application part to the tip, It is preferable from the point of view of ease of removal from the initial use onto an applicator and ease of application to the lips, skin, and the like.

Production Example 1 (Production of palmitoyl hydroxypropyl cellulose)
Add 94 g (1.01 mol) of 3-methylpyridine to 57.8 g (0.165 mol) of hydroxypropyl cellulose (Cellny M; manufactured by Nippon Soda Co., Ltd.) in a mixed solvent of toluene and methyl ethyl ketone at 50° C. under nitrogen and dissolve. Let 85.1 g (0.31 mol) of palmitoyl chloride are added dropwise over 0.5 hours. Then, it was reacted at 50° C. for 5 hours, purified by precipitation in ethanol, and dried to obtain palmitoyl hydroxypropyl cellulose (weight average molecular weight: 1,500,000, average acyl substitution: 60 mol % of all hydroxyl groups). The obtained palmitoyl hydroxypropyl cellulose was finely cut so as to be easily dissolved at the time of blending.

(Measurement of mass average molecular weight)
The average molecular weight (Mw) of the polymer was measured by gel permeation chromatography (GPC) using Hitachi L-6000 High Performance Liquid Chromatography. Hitachi L-6000 was used as the eluent channel pump, Shodex RI SE-61 differential refractive index detector as the detector, and GMHHR-H double connected column as the column. Samples were adjusted to a concentration of 0.5 g/100 mL with eluent and 20 μL was used. A chloroform solution of 1 mmol/L of N,N-dimethyldodecylamine (Farmin DM20, manufactured by Kao Corporation) was used as an eluent. The column temperature was 40°C and the flow rate was 1.0 mL/min.

(Measurement of average acyl (ester) substitution degree)
In H-NMR, the proton of the methine group next to the carbonyl group of the esterified cellulose appears at around 5 ppm, and the sum of the protons next to the six-membered ring oxygen of cellulose and the methylene group next to the hydroxyl group of cellulose is 3. Appears around 0.5 ppm. Calculated from the integrated value.

Examples 1 to 8, Comparative Example 1
An oil-based cosmetic (stick lipstick) having the composition shown in Table 1 was produced, and the spreadability during application, the difficulty of color unevenness during application, the difficulty of color unevenness at the corners of the mouth after application, and the lips after application The plump three-dimensional effect was evaluated. The results are also shown in Table 1.

(Production method)
The base materials (other than the colorant) were heated and melted at 120° C. for 30 minutes, and uniformly mixed with a disper. Next, the colorant raw materials were added and uniformly mixed for an additional 15 minutes. After defoaming, it was cooled to room temperature and solidified. A required amount was cut out from this lipstick bulk, heated and melted at 100° C. using a microwave oven, poured into a mold, cooled and solidified to obtain a stick lipstick.

(Evaluation method)
(1) Spreadability during application:
Ten professional panelists applied each stick lipstick directly to the lips and evaluated according to the following criteria. The results are shown as an integrated value for 10 people.
5; Spreadability is very good.
4; Spreadability is good.
3; Spreadability is slightly good.
2: Spreadability is not so good.
1; Spreadability is not good.

(2) Difficulty of color unevenness during application:
Ten professional panelists applied each stick lipstick directly to the lips and evaluated according to the following criteria. The results are shown as an integrated value for 10 people.
5; Color unevenness during application is not observed.
4; Color unevenness during application is hardly observed.
3; Some color unevenness is observed during application.
2: Color unevenness is observed during application.
1; Color unevenness during application is considerably observed.

(3) Difficulty in producing color unevenness at the corners of the mouth after application:
Ten professional panelists applied each stick lipstick directly to the lips and evaluated according to the following criteria. The results are shown as an integrated value for 10 people.
5; Color unevenness at the corners of the mouth after application is not observed.
4; Color unevenness at the corners of the mouth after application is hardly observed.
3; Slight color unevenness is observed at the corners of the mouth after application.
2: Color unevenness is observed at the corners of the mouth after application.
1: Significant color unevenness is observed at the corners of the mouth after application.

(4) Plump and three-dimensional effect on lips after application:
Ten professional panelists applied each stick lipstick directly to the lips and evaluated according to the following criteria. The results are shown as an integrated value for 10 people.
5; Plump and three-dimensional effect is observed on the lips after application.
4; The lips after application have a slightly plump three-dimensional effect.
3; Plump and three-dimensional effect is not so much observed on the lips after application.
2: Virtually no plump three-dimensional effect is observed on the lips after application.
1; No plump three-dimensional effect is observed on the lips after application.

Example 9
A stick lipstick having the composition shown in Table 2 was produced.
The obtained lipstick spreads well during application, does not easily cause color unevenness, does not easily cause color unevenness at the corners of the mouth after application, and gives a plump three-dimensional effect to the finished lips after application.

(Production method)
The base materials (other than the colorant) were heated and melted at 120° C. for 30 minutes, and uniformly mixed with a disper. Next, the colorant raw materials were added and uniformly mixed for an additional 15 minutes. After defoaming, it was cooled to room temperature and solidified. A required amount was cut out from this lipstick bulk, heated and melted at 100° C. using a microwave oven, poured into a mold, cooled and solidified to obtain a stick lipstick.

Claims (4)

The following components (A), (B) and (C):
(A) The main chain has a polysaccharide skeleton selected from cellulose, cellulose derivatives and pullulan, and 45 to 95 mol% of the total hydroxyl groups are groups -OMR (M is CH ₂ or a carbonyl group C=O). , R represents a linear or branched alkyl or alkenyl group having 3 to 40 carbon atoms) substituted polysaccharide derivative 0.01 to 5 mass%,
(B) metal soap 0.02 to 5% by mass,
(C) 50 to 98% by mass of oil component liquid at 25°C
and wherein the mass ratio (A)/(B) of component (A) to component (B) is 0.5-10. 2. The oil-based cosmetic composition according to claim 1, wherein in component (A), R is a linear or branched alkyl group or alkenyl group having 9 to 21 carbon atoms. The metal soap of component (B) has the general formula (1)
(R ¹ COO) _m X (1)
(Wherein, R ¹ represents an aliphatic hydrocarbon group having 10 to 18 carbon atoms, X represents aluminum, zinc, magnesium, calcium, lithium or barium, and m represents the valence of metal X)
The oily cosmetic according to claim 1 or 2 , which is represented by The oil-based cosmetic according to any one of claims 1 to 3 , which is a lip cosmetic.