JP7067871B2 - Oily cosmetics - Google Patents

Description

The present invention relates to oil-based cosmetics.

Various studies have been conducted on oil-based cosmetics such as lipsticks in order to obtain a beautiful finish and a smooth feel. For example, Patent Document 1 describes that an oily cosmetic in which a specific acylated cellulose derivative is combined with an ester oil and a hydrocarbon oil in a specific ratio maintains a smooth feel. Further, Patent Document 2 describes that a cosmetic containing a specific pullulan fatty acid ester showing high solubility in an oil agent has excellent water resistance, a feeling of use such as smoothness, and durability. Has been done.

Japanese Unexamined Patent Publication No. 2010-100612 International Publication No. 2010/49995

According to the present inventor, when a specific coloring pigment is added to an oil-based cosmetic containing an oil component and an acylated polysaccharide, the dispersibility of the specific coloring pigment is lowered, and an undispersed coloring pigment remains in the oil. We found the problem that it is easy and takes time to disperse.

When the present inventors use a specific acylated polysaccharide and a liquid oil in combination with a specific coloring pigment surface-treated with alkoxysilane in a specific ratio, the coloring pigment is uniformly dispersed and the roughness at the initial stage of application is achieved. It has been found that an oil-based cosmetic product that is free of charge and has a good usability can be obtained.

In the present invention, the following components (A), (B) and (C):
(A) The main chain has a polysaccharide skeleton, and some of all hydroxyl groups are groups-OM-R (M represents CH ₂ or carbonyl group C = O, and R is a straight chain having 3 to 40 carbon atoms. Or a polysaccharide derivative substituted with (indicating an alkyl group or alkenyl group of a branched chain) 0.01 to 30% by mass,
(B) One or more colored pigments selected from water-soluble dyes surface-treated with alkoxysilane, lake pigments of water-soluble dyes, and inorganic colored pigments 0.001 to 20% by mass,
(C) Oil component liquid at 25 ° C. 10-98% by mass
Containing oily cosmetics.

In the oil-based cosmetic of the present invention, the coloring pigment is uniformly dispersed, there is no roughness at the initial stage of application, and the feeling of use is good.

The polysaccharide derivative of the component (A) used in the present invention is not limited as long as it has a polysaccharide skeleton in the main chain. Examples thereof include sclerothium gum, arabic gum, alkaligenes-producing polysaccharides, carrageenan, hyaluronic acid, tuberose polysaccharides, white jellyfish polysaccharides, locust bean gums, guar gums, tara gums, galactomannans such as phenuglique gums and the like.
Of these raw material polysaccharides, cellulose, cellulose derivatives and pullulan are preferable, and cellulose and cellulose derivatives are more preferable.

The cellulose derivative was modified with short-chain acylated cellulose such as acetyl cellulose and acetyl butyl cellulose, short-chain alkyl etherified cellulose such as methyl cellulose and ethyl cellulose, hydroxyalkyl group, glyceryl ether group, and (mono) alkyl glyceryl ether group. Examples thereof include cellulose, and more specifically, hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxypropylmethyl cellulose, glyceryl cellulose, methyl glyceryl cellulose and the like are preferable.
Furthermore, as the cellulose derivative as a raw material for production, those having the following structural units are preferable.

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

In the structural unit, as R', an alkylene group having 2 to 4 carbon atoms in a straight chain or a branched chain is preferable, and an ethylene group and a propylene group are more preferable. The number of n is preferably such that the average number of moles of R'O added per glucose unit is 0.3 to 5, more preferably 0.5 to 4.5, and preferably 1 to 4. More preferred.

Preferred raw material cellulose derivatives include hydroxyethyl cellulose, hydroxypropyl cellulose and the like, with hydroxypropyl cellulose being more preferred.
The mass average molecular weight (Mw) of the raw material cellulose derivative is preferably 10,000 to 4 million, more preferably 100,000 to 3 million, still more preferably 300,000 to 200, from the viewpoint of solubility in an oil agent and feel. It is 10,000.

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

In the polysaccharide derivative of the component (A), a part of the hydroxyl group of the raw material polysaccharide is substituted with the group —OM—R.
In the substituent group-OM-R, M represents CH ₂ or a carbonyl group C = O, and R is a linear or branched alkyl group or alkenyl group having 3 to 40 carbon atoms.
(I) The linear alkyl group includes a butyl group, a pentyl group, a hexyl group, a heptyl group, an octyl group, a nonyl group, a decyl group, an undecyl group, a dodecyl group, a tridecyl group, a tetradecyl group, a pentadecyl group and a hexadecyl group. 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, hentoriacontyl group, dotoriacontyl group, Examples thereof include a tritririacontyl group, a tetratririacontyl group, a pentatriacontyl group, a hexatriacontyl group, a heptatoriacontyl group, an octatriacontyl group, a nonatoriacontyl group and a tetracontyl group.

(Ii) As the alkyl group of the branched chain, a methylpentyl group, a methylhexyl group, a methylheptyl group, a methyloctyl group, a methylnonyl group, a methylundecyl group, a methylheptadecyl group, an ethylhexadecyl group, a methyloctadecyl group and a propyl group. Pentadecyl group, 2-hexyldecyl group, 2-octyldodecyl, 2-heptylundecyl group, 2-decyltetradecyl group, 2-dodecylhexadecyl group, 2-tetradecyloctadecyl group, 2-hexadecylicosyl group And so on.

(Iii) As the linear alkenyl group, a dodecenyl group, a tridecenyl group, a tetradecenyl group, a pentadecenyl group, a hexadecenyl group, a heptadecenyl group, an octadecenyl group, a nonadesenyl group, an icosenyl group, a henicosenyl group, a docosenyl group, a tricosenyl group, a tetracosenyl group, Examples thereof include a pentacosenyl group, a hexacosenyl group, a heptacosenyl group, an octacosenyl group and the like.
(Iv) As the alkenyl group of the branched chain, isotridecenyl group, isooctadecenyl group, isotoriacontenyl group, 2-butyloctenyl group, 2-hexyldecenyl group, 2-octyldodecenyl group, 2-decyltetra. Examples thereof include a decenyl group and a 2-dodecylhexadecenyl group.

Of these, a linear alkyl group is preferable for R from the viewpoint of maintaining a smooth feel on the lips and skin. Further, from the viewpoint of ease of stretching and good adhesion, 9 to 21 carbon atoms are preferable, 11 to 17 carbon atoms are more preferable, and 15 carbon atoms are even more preferable.

The group-OMR substitution rate of the hydroxyl group is preferably 45 mol% or more, more preferably 48 mol% or more, and 51 mol% or more, from the viewpoint of increasing the solubility in the oil agent and not feeling stiff or taut at the time of application. More preferably, 95 mol% or less is preferable, 94 mol% or less is more preferable, 92 mol% or less is further preferable, and 66 mol% or less is further preferable, from the viewpoint of resistance to twisting of the coating film. The group-OMR substitution rate of the hydroxyl group is preferably 45 to 95 mol%, more preferably 48 to 94 mol%, further preferably 51 to 92 mol%, still more preferably 51 to 66 mol%.
It is preferable that the hydroxyl group remains in an appropriate amount from the viewpoint of resistance to twisting of the coating film, preferably 5 mol% or more, more preferably 6 mol% or more, further preferably 8 mol% or more, still more preferably 34 mol% or more. , 55 mol% or less is preferable, 52 mol% or less is more preferable, and 49 mol% or less is further preferable. The residual ratio of the hydroxyl group is preferably 5 to 55 mol%, more preferably 6 to 52 mol%, further preferably 8 to 49 mol%, still more preferably 34 to 49 mol%.

The mass average molecular weight of the polysaccharide derivative of the component (A) is preferably 100,000 or more, more preferably 200,000 or more, and more preferably 300,000, from the viewpoint of solubility in the oil component and maintaining a smooth feel on the lips and skin. The above is further preferable, 500,000 or more is further preferable, 5 million or less is preferable, 4 million or less is more preferable, 3 million or less is further preferable, and 2 million or less is further preferable.
The mass average molecular weight (Mw) is determined by gel permeation chromatography (using a chloroform solvent, a calibration curve defined with linear polystyrene as a standard, and a refractive index detector).

The polysaccharide derivative of the component (A) is a part of all the hydroxyl groups of the raw material cellulose derivative by reacting the raw material polysaccharide with an acid halide having a linear or branched alkyl group or an alkenyl group having 3 to 40 carbon atoms. , Preferably produced by substituting 45-95 mol%.
Further, the product in which M is CH ₂ can be produced by reacting a polysaccharide with a corresponding sulfonic acid ester such as an alkyl halide or an alkyl mesylate in the presence of a base. Those having a main chain consisting of a cellulose skeleton can also be obtained by a transesterification reaction (acidorysis) of acetyl cellulose. According to this method, a cellulose ester derivative having an extremely low residual amount of hydroxyl groups can be obtained.

Specifically, hydroxyethyl cellulose lauric acid ester, hydroxyethyl cellulose myristic acid ester, hydroxyethyl cellulose palmitic acid ester, hydroxyethyl cellulose stearic acid ester, hydroxyethyl cellulose bechenic acid ester; hydroxypropyl cellulose lauric acid ester, hydroxypropyl cellulose myristic acid ester, hydroxy. Propylcellulose palmitic acid ester, hydroxypropylcellulose stearate ester, hydroxypropylcellulose behenic acid ester; hydroxyethylmethylcellulose lauric acid ester, hydroxyethylmethylcellulose myristic acid ester, hydroxyethylmethylcellulosepalmitic acid ester, hydroxyethylmethylcellulose stearate ester, hydroxyethyl Methylcellulose behenic acid ester; hydroxypropylmethylcellulose lauric acid ester, hydroxypropylmethylcellulose myristic acid ester, hydroxypropylmethylcellulose palmitic acid ester, hydroxypropylmethylcellulose stearate ester, hydroxypropylmethylcellulose bechenic acid ester; Examples thereof include purulan palmitate, purulan stearate, and purulan behenic acid ester. Among them, hydroxypropyl cellulose lauric acid ester, hydroxypropyl cellulose myristic acid ester, hydroxypropyl cellulose palmitic acid ester, hydroxypropyl cellulose stearate ester, hydroxypropyl cellulose behenic acid ester from the viewpoint of maintaining a smooth feel on the lips and skin. , Plulan lauric acid ester, Plulan myristic acid ester, Plulan palmitic acid ester, Plulan stearate ester, Plulam behenic acid ester are preferable, and at least hydroxypropyl cellulose palmitic acid ester and Plulan myristic acid ester are more preferable.

As the polysaccharide derivative of the component (A), one kind or two or more kinds can be used, and the content is such that the coating film is not easily twisted and a smooth feel is maintained on the lips and skin, so that the content is in the whole composition. 0.01% by mass or more, preferably 0.05% by mass or more, more preferably 0.1% by mass or more, more preferably 30% by mass or less, preferably 20% by mass or less, more preferably 5% by mass or less. 3% by mass or less is more preferable. The content of the component (A) is 0.01 to 30% by mass, preferably 0.05 to 20% by mass, more preferably 0.1 to 5% by mass, and 0.1 to 1% by mass in the total composition. 3% by mass is more preferable.

The coloring pigment of the component (B) is selected from a water-soluble pigment, a water-soluble dye lake pigment, and an inorganic coloring pigment, and these are surface-treated with alkoxylan.
Water-soluble dyes and lake pigments for water-soluble dyes include Red No. 2, Red No. 3, Red No. 102, Red No. 104 (1), Red No. 105 (1), Red No. 106, Yellow No. 4, and Yellow. Examples thereof include No. 5, Green No. 3, Blue No. 1, Blue No. 2, and their lake pigments.
Examples of the inorganic coloring pigment include metal oxides such as titanium oxide, zinc oxide, yellow iron oxide, red iron oxide, black iron oxide, navy blue, ultramarine, chromium oxide, and chromium hydroxide; metal complexes such as manganese violet and cobalt titanate; carbon. Black and the like can be mentioned.
Among them, Yellow No. 4, Yellow No. 5, Green No. 3, Blue No. 1, Blue No. 2, and these lake pigments, titanium oxide, iron oxide, red iron oxide, black iron oxide, dark blue, and ultramarine are preferable, and yellow 4 No. 1 lake pigment, Blue No. 1 lake pigment, yellow iron oxide, red iron oxide, black iron oxide, and titanium oxide are more preferable.

Examples of the alkoxysilane for surface-treating these colored pigments include those represented by the following formulas.
R ¹ _a Si (OR ² ) _4-a
(In the formula, R ¹ represents a linear or branched alkyl group having 1 to 24 carbon atoms which may have a hydrogen atom, a phenyl group and a fluorine atom, and R ² is an alkyl group having 1 to 5 carbon atoms. , And a indicates a number from 0 to 4)

Specific examples of the alkoxysilane include methyltrimethoxysilane, dimethyldimethoxysilane, phenyltrimethoxysilane, methyltriethoxysilane, dimethyldiethoxysilane, phenyltriethoxysilane, n-propyltrimethoxysilane, and n-propyltriethoxysilane. Examples thereof include silane, hexyltrimethoxysilane, hexyltriethoxysilane, octyltrimethoxysilane, octyltriethoxysilane, decyltrimethoxysilane, 1,6-bis (trimethoxysilyl) hexane, and trifluoropropyltrimethoxysilane.
As the alkoxysilane, an alkylalkoxysilane having a linear alkyl group having 6 to 10 carbon atoms is preferable, octyltrimethoxysilane and octyltriethoxysilane are more preferable, and octyltriethoxysilane is further preferable.

The method of surface treatment using alkoxysilane is not limited, but for example, a dry treatment method such as mixing alkoxysilane and a coloring pigment using a high-speed stirrer such as a Henshell mixer or a super mixer, or fine particle oxidation of alkoxysilane. A wet treatment method such as adding to a zinc slurry, stirring and mixing can be used.

The amount of alkoxysilane treated is surface treatment with alkoxysilane from the viewpoint that the coloring pigment of component (B) is uniformly dispersed in the oil component containing component (A), and there is no roughness at the initial stage of coating and a good usability is obtained. It is preferably 0.1 to 20% by mass, more preferably 0.5 to 10% by mass, and even more preferably 1 to 6% by mass with respect to 100% by mass of the colored pigment.

As the coloring pigment of the component (B), one kind or two or more kinds can be used, and the content is such that the coloring pigment of the component (B) is uniformly dispersed in the oil component containing the component (A) and the initial application is started. From the viewpoint of obtaining the coloring power required for oil-based cosmetics while obtaining a good feeling of use without roughness, the total composition is 0.001% by mass or more, preferably 0.01% by mass or more, preferably 0.1. More preferably, it is more preferably 0.3% by mass or more, further preferably 0.3% by mass or more, 20% by mass or less, preferably 15% by mass or less, more preferably 10% by mass or less, still more preferably 6% by mass or less. The content of the component (B) is 0.001 to 20% by mass, preferably 0.01 to 15% by mass, more preferably 0.1 to 10% by mass, and 0.3 to 0.3 to 10% by mass in the total composition. 6% by mass is more preferable.

In the present invention, the mass ratio (A) / (B) of the component (A) to the component (B) is such that the coloring pigment of the component (B) is uniformly dispersed in the oil component containing the component (A) and the initial coating is performed. 0.005 or more is preferable, 0.01 or more is more preferable, 0.02 or more is further preferable, and 40 or less is obtained from the viewpoint of obtaining the coloring power required for oil-based cosmetics while obtaining a good feeling of use without roughness. Is preferable, 5 or less is more preferable, and 1 or less is more preferable. The mass ratio (A) / (B) of the component (A) to the component (B) is preferably 0.005 to 40, more preferably 0.01 to 5, and even more preferably 0.02 to 1.

The oil component liquid at 25 ° C. of the component (C) used in the present invention is an oily component having fluidity at 25 ° C., and as long as it has fluidity, a paste-like oily component is also included.
The oil component liquid at 25 ° C. (C) may be any one used in ordinary cosmetics, for example, liquid paraffin, light isoparaffin, liquid isoparaffin, mineral oil, polybutene, polyisobutene, hydrogenated polyisobutene, water. Linear or branched hydrocarbon oils such as polydecene, squalane, squalane; avocado oil, macadamia nut oil, olive oil, rapeseed oil, sesame oil, wheat germ oil, flaxseed oil, cottonseed oil, soybean oil, palm oil, palm oil, castor oil. , Johova oil, sunflower oil, camellia oil, corn oil and other vegetable oils; liquid lanolin and other animal oils; isopropyl myristate, octyldodecyl myristate, isopropyl isostearate, isononyl isononanoate, butyl stearate, oleyl oleate, isotorideyl isononanoate. , Isostearyl myristate, octyldodecyl ricinoleate, octyl hydroxystearate, diglyceryl monoisostearate, ethylhexyl palmitate, cetyl ethylhexanate, octyl methoxycinnamate, tocopherol acetate, propylene carbonate, diisostearyl malate, dicapril Propylene Glycol Acid, Neopentyl Glycol Dicaprate, Neopentyl Glycol Dicaprateate, Diglyceryl Diisostearate, Propanediol Diisostearate, Glyceryl Monomyristearate, Glyceryl Diisostearate, Glyceryl Triisostearate, Di (Capricic Acid / Capril) Acid) Propanediol, Tri (caprylic acid / capric acid) glyceryl, tri2-ethylhexanoate glyceryl, triethylhexanoin, tri-2-ethylhexanoic acid trimethylolpropane, triisostearate trimethylolpropane, tetraoctanoate pentaeryth Lithyl, pentaerythlitte tetraethylhexanoate, pentaerythritol tetraisostearate, polyglyceryl-2 isostearate, polyglyceryl-2 diisostearate, polyglyceryl-2 triisostearate, polyglyceryl-2 tetraisostearate, polyglyceryl-6 octacaprylate, (isosteare) Acid / Sevacinic Acid) Ditrimethylol Propane Oligoester, Dipentaerythrityl Tripolyhydroxystearate, Di Lauroyl Glutamic Acid (Phytosteryl / Octyldodecyl), Di Lauroyl Glutamic Acid (Phytos) Teryl behenyl octyldodecyl), isostearate trehalose esters, 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; higher alcohols such as octyldodecanol; diphenyldimethicone, dimethylpolysiloxane, methylcyclopolysiloxane, methylphenylpolysiloxane, methylhydrogenpolysiloxane, higher alcohol-modified organod Silicone oils such as polysiloxane, tris (trimethylsiloxy) methylsilane, trimethylpentaphenyltrisiloxane; fluorine oils such as fluoropolyether and perfluoroalkyl ether silicone; as creams and pastes, trilanolin fatty acid glyceryl, soft lanolin fatty acid, vaseline , Branched or hydroxylated fatty acid cholesteryl, dipentaerytrit fatty acid ester (dipentaerytrit hexaoxystearate, etc.), isostearic acid-hardened castor oil, monohydroxystearic acid-cured castor oil, tri (capril caprin myristine stea) Fatty acid) glyceride, myristyl lactate, dimer dilinol acid hydrogenated castor oil, dimer dilinoleic acid (phytorteryl / isostearyl / cetyl / stearyl / behenyl), phytosteryl oleate, dilauroyl glutamate (phytosteryl behenyl octyldodecyl), etc. Can be mentioned.

As the component (C), at least neopentyl glycol dicaprate, dipentaerythrityl tetraisostearate, isotridecyl isononanoate, from the viewpoint of uniformly dispersing the component (A) and the component (B) and suppressing the feeling of roughness at the initial stage of application. It preferably contains one or more selected from octyldodecanol, hydrogenated polyisobutene, trimethylpentaphenyltrisiloxane, diisostearyl malate, octyldodecyl myristate, octyl methoxycinnamate, and propylene carbonate.

As the oil component of the component (C), one type or two or more types can be used, and the content is such that the component (A) and the component (B) are uniformly dispersed, there is no roughness at the initial stage of application, and the use is good. From the viewpoint of obtaining a feeling, the total composition is 10% by mass or more, preferably 30% by mass or more, more preferably 50% by mass or more, further preferably 65% by mass or more, 98% by mass or less, and 85% by mass. The following is preferable, 80% by mass or less is more preferable, and 78% by mass or less is further preferable. The content of the component (C) is 10 to 98% by mass, preferably 30 to 85% by mass, more preferably 50 to 80% by mass, still more preferably 65 to 78% by mass in the total composition.

Furthermore, the oily cosmetics of the present invention can contain a solid wax at 25 ° C. “Solid at 25 ° C” refers to a solid showing the properties of a solid at 25 ° C and having a melting point of 61 ° C or higher.
The wax solid at 25 ° C. is not limited as long as it is used in ordinary cosmetics, and is, for example, a mineral wax such as ozokelite and selecin; a petroleum wax such as paraffin and microcrystallin wax; , Synthetic hydrocarbon wax such as polyethylene wax; vegetable wax such as carnauba wax, candelilla wax, rice wax, wood wax, sunflower wax, hydrogenated jojoba oil; animal wax such as beeswax and whale wax; silicone wax, fluorine Examples include synthetic waxes and synthetic waxes such as synthetic waxes.

Wax solid at 25 ° C gives an appropriate hardness to oily cosmetics, suppresses oil seepage, and imparts moisture. Therefore, melting points of 60 ° C or higher and 140 ° C or lower are preferable, and 60 ° C or higher and 115 ° C. The following is more preferable.

Further, the wax solid at 25 ° C. imparts an appropriate hardness to the oil-based cosmetics, suppresses oil seepage, and imparts moisture. Therefore, the degree of needle penetration at 25 ° C. is preferably 150 or less. , 110 or less is more preferable, and at least from the viewpoint of suppressing roughness at the initial stage of coating, it is preferable to contain solid wax at 25 ° C. with a needle penetration degree of 15 or more and 110 or less.
Here, the degree of needle insertion is such that the specified needle (needle mass 2.5 ± 0.02 g, needle holder mass 47.5 ± 0.02 g) is applied to the wax sample maintained at 25 ± 0.1 ° C. The weight mass (mass 50 ± 0.05 g) measures the length of needle insertion in 5 seconds, and the value obtained by multiplying the needle insertion distance (mm) by 10 is used as the needle insertion degree. JIS K-2235- It is a value measured according to 5.4 (1991).

Examples of the solid wax having a needle penetration of 150 or less at 25 ° C. include mineral waxes, petroleum waxes and synthetic hydrocarbon waxes. Among them, selecin, microcrystalline wax, paraffin wax, and synthetic hydrocarbon wax with a needle penetration of 110 or less are preferable because they suppress the dullness of the appearance color and have high durability and moisturizing performance of the coating film. From the viewpoint of suppressing roughness, it is preferable to contain at least microcrystalline wax and paraffin wax having a needle penetration of 15 or more and 110 or less.
Commercially available products can be used as these waxes, for example, Celesin # 810 (Nikko Rika) and the like; as microcrystalline wax, Multiwax W-445, W-835 (all manufactured by SONNEBORN), and the like. Paracera M (manufactured by Paramelt), Hi-Mic-1045, 1070, 2045, HNP-0190 (all manufactured by Nippon Seiko Co., Ltd.), etc .; Paraffin wax 140, 145, 150, 155, HNP-3 as paraffin wax. 5, 9 (above, manufactured by Nippon Seiko Co., Ltd.), etc .; Can be mentioned.

The wax solid at 25 ° C. can be used alone or in combination of two or more, and the content is preferably 1% by mass or more in the entire composition from the viewpoint of high durability and moisturizing performance of the coating film. , 6% by mass or more is more preferable, 20% by mass or less is preferable, and 15% by mass or less is more preferable. The content of the wax solid at 25 ° C. is preferably 1 to 20% by mass, more preferably 6 to 15% by mass in the total composition.

Further, in the oil-based cosmetics of the present invention, in addition to the above-mentioned components, components used in ordinary cosmetics, for example, coloring pigments other than the component (B), extender pigments, brilliant pigments, organic powders, and components (C) Oil components other than, surfactants, lower alcohols, polyhydric alcohols, polymer compounds other than component (A), ultraviolet absorbers, antioxidants, dyes, fragrances, preservatives, pH adjusters, blood circulation promoters, anti-inflammatory It can contain agents, cooling sensitizers, bactericides, skin activators, moisturizers, water and the like.

The oily cosmetic of the present invention can be produced by a usual method, and the dosage form may be solid, semi-solid, gel, liquid or the like.

The oily cosmetic of the present invention is a cosmetic having an oily agent as a continuous phase, and is used for skin, lips, eyelashes, nails, and hair, and is preferably used for lips. Lip cosmetics such as lipstick, lip cream, lip gloss, lip liner; Makeup cosmetics such as mascara, eyeliner, eyeshadow, teak color, foundation, concealer; cream, milky lotion, beauty liquid, massage agent, deodorant, sun It can be a screen, a hair restorer, a hair color, a hair wax, a hair foam, etc. Above all, it is suitable as a lip cosmetic selected from lipsticks, lip balms, lip glosses and lip liners.

The oily cosmetic of the present invention can be applied not only directly but also to the application site such as skin, lips, eyelashes, nails and hair by using a cosmetic application tool.

When the oily cosmetic of the present invention is in liquid form, it can be stored in a container to be taken out with a cosmetic application tool, and the container to be taken out is preferably a bottle container, a jar container, or a tube container, especially when used. Bottle containers and tube containers are more preferable from the viewpoint of suppressing dripping.

The cosmetic application tool for taking out the oily cosmetic stored in the container has a coating surface for applying the cosmetic, and has a support shaft to which the coating portion is connected to the tip. Specific examples include chips, sponges, puffs, brushes and the like. Among them, a cosmetic application tool having a coating surface for applying cosmetics and having a coating portion made of a cone-shaped or flat body and a support shaft having the coating portion connected to the tip thereof. It is preferable from the viewpoint of easy removal to application tools and ease of application to lips, skin, etc. from the initial use.

Production Example 1 (Production of Cellulose Derivative 1)
Dissolve 94 g (1.01 mol) of 3-methylpyridine in 57.8 g (0.165 mol) of hydroxypropyl cellulose (Celney M; manufactured by Nippon Soda Co., Ltd.) at 50 ° C. in a mixed solvent of toluene under nitrogen and methyl ethyl ketone. Let me. 85.1 g (0.31 mol) of palmitoyl chloride is added dropwise over 0.5 hours. Then, the mixture was reacted at 50 ° C. for 5 hours, precipitated in ethanol, purified, and dried to obtain palmitoyl hydroxypropyl cellulose (mass average molecular weight 1.5 million, average degree of 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 compounding.

(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 type high performance liquid chromatography. The eluent flow path pump used was Hitachi L-6000, the detector used was a Shodex RI SE-61 differential refractive index detector, and the column used was a double-connected GMHHR-H. The sample was adjusted to a concentration of 0.5 g / 100 mL with an eluent and 20 μL was used. As the eluent, a chloroform solution of 1 mmol / L N, N-dimethyldodecylamine (Farmin DM20, manufactured by Kao Corporation) was used. The column temperature was 40 ° C. and the flow rate was 1.0 mL / min.

(Measurement of average acyl (ester) degree of substitution)
In 1 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 proton next to the 6-membered ring oxygen of the cellulose and the methylene group next to the hydroxyl group of the cellulose is 3 Appears around 5.5 ppm. It was calculated from the integrated value.

Examples 1 to 6, Comparative Examples 1 to 3
Stick lipsticks having the compositions shown in Table 1 were produced, and the uniformity of appearance, the dispersed state of colored pigments, and the absence of roughness at the initial stage of application were evaluated. The results are also shown in Table 1.

(Production method)
A total amount of 300 g was blended using a 1 L container having a diameter of 130 mm and a disper blade having a diameter of 30 mm (rotation speed was 2500 r / min in all steps). First, the base material (other than the colorant containing the component (A) and the component (B)) was heated to 105 ° C. and uniformly mixed for 5 minutes while maintaining the temperature. Next, a colorant containing the component (A) and the component (B) was added, and the mixture was uniformly mixed for another 2 minutes. After defoaming, it was cooled and solidified to room temperature. A required amount was cut out from this lipstick bulk, melted by heating at 100 ° C. using a microwave oven, poured into a mold, and cooled and solidified to obtain a stick lipstick.

(Evaluation methods)
(1) Uniform appearance:
The uniformity of appearance of each stick lipstick, especially the number of undispersed color pigments, was visually evaluated. The evaluation was performed using 20 stick lipsticks for one prescription.

(2) Dispersion state of colored pigment:
A sample for evaluating the dispersion state of the coloring pigment was prepared by spreading each stick lipstick on copy paper, and the dispersion state of the coloring pigment of each stick lipstick was evaluated. The evaluation was carried out by applying 20 stick lipsticks having a weight of 2.5 g for each prescription, for a total of 50 g. When there was an undispersed color pigment in the lipstick, the undispersed color pigment was applied linearly when spread on copy paper, so the number was visually evaluated.

(3) No roughness at the initial stage of application:
Ten professional panelists sensory-evaluated the lack of roughness at the initial stage of application when each stick lipstick was applied directly to the lips. The results are shown by the number of panelists who evaluated it as good without roughness.

Example 7
A liquid lipstick having the composition shown in Table 2 was produced.
In the obtained liquid lipstick, the coloring pigment is uniformly dispersed, no undispersed substance of the coloring pigment is confirmed, and there is no roughness at the initial stage of application, and the feeling of use is good.

(Production method)
A total amount of 300 g was blended using a 1 L container having a diameter of 130 mm and a disper blade having a diameter of 30 mm (rotation speed was 2500 r / min in all steps). First, the base material (other than the colorant containing the component (A) and the component (B)) was heated to 105 ° C. and uniformly mixed for 5 minutes while maintaining the temperature. Next, a colorant containing the component (A) and the component (B) was added, and the mixture was uniformly mixed for another 2 minutes. After defoaming, it was cooled and solidified to room temperature. A required amount was cut out from this lipstick bulk, melted by heating at 100 ° C. using a microwave oven, poured into a transparent dipping container, cooled and solidified, and a liquid lipstick was obtained. As the cosmetic application tool, a tool having a flat application portion and a flocked surface was used.

Claims (5)

The following components (A), (B) and (C):
(A) The main chain has a polysaccharide skeleton selected from cellulose, a cellulose derivative and purulan, and a part of all hydroxyl groups is a group-OM-R (M indicates CH ₂ or a carbonyl group C = O, R. Indicates a linear or branched alkyl group or alkenyl group having 9 to 21 carbon atoms), and the polysaccharide derivative is 0.1 to 2.0% by mass.
(B) One or more colored pigments selected from water-soluble dyes surface-treated with alkoxysilane, lake pigments of water-soluble dyes, and inorganic colored pigments 0.001 to 20% by mass,
(C) Oil component liquid at 25 ° C. 10-98% by mass
An oily cosmetic containing, and the mass ratio (A) / (B) of the component (A) to the component (B) is 0.005 to 1 . In the component (A), 45 to 95 mol% of all hydroxyl groups is a group-OM-R (M represents CH ₂ or a carbonyl group C = O, and R is a linear or branched alkyl having 9 to 21 carbon atoms. The oily cosmetic according to claim 1, which is a polysaccharide substituted with (indicating a group or an alkenyl group). The oily cosmetic according to claim 1 or 2, wherein the polysaccharide skeleton of the component (A) is cellulose or a cellulose derivative. The oily cosmetic according to any one of claims 1 to 3 , further comprising 1 to 20% by mass of solid wax at 20 ° C. The oily cosmetic according to any one of claims 1 to 4 , which is a lip cosmetic.