JP6930851B2 - 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 on the applied skin, lips, and the like. For example, Patent Document 1 discloses an oily cosmetic in which a specific acylated cellulose derivative is combined with an ester oil and a hydrocarbon oil in a specific ratio, and it is shown that a smooth feel can be maintained. Further, Patent Document 2 describes that an oil-based cosmetic containing a specific acylated cellulose derivative, a silicone oil agent, and an ester oil brings excellent transparency and luster, and can maintain a smooth feel. Patent Document 3 describes that an oil-based cosmetic containing a specific acylated cellulose derivative and a silicone having a nonionic hydrophilic group is excellent in sustainability of a beautiful makeup finish and can maintain a smooth feel. ..

JP 2010-160122 Special table 2011-79746 JP 2011-173818

However, although the cosmetics containing the acylated cellulose derivative described in the above documents are all excellent in smooth feel, further improvement in various performances is required.

The present invention relates to an oil-based cosmetic that not only has an excellent smooth feel on the applied skin, lips, etc., but also effectively suppresses color transfer.

Therefore, as a result of various studies, the present inventor has made an ester oil and volatilization having a specific solubility while setting a specific content and mass ratio of a cellulose derivative having a molecular weight of 300,000 to 40 million and a cellulose derivative having a molecular weight of 10 to 300,000. It was found that when used in combination with a specific content of each of the sexual hydrocarbon oils, an oil-based cosmetic that can provide a smooth feel on the applied skin, lips, etc. and can effectively suppress color transfer can be obtained. rice field.

Therefore, the present invention describes the following components (A), (B), (C), and (D):
(A) Cellular derivative having a molecular weight of 300,000 or more and 40 million or less 1% by mass or more and 50% by mass or less (B) Cellular derivative having a molecular weight of 1000 or more and less than 300,000 1% by mass or more and 50% by mass or less (C) Component (A) 25 Ester oil that dissolves at 0.1 g / g or more at ° C. 0.5% by mass or more and 50% by mass or less (D) Volatile hydrocarbon oil Contains 5% by mass or more and 85% by mass or less and contains component (B) It provides an oil-based cosmetic having a mass ratio ((B) / (A)) of the amount to the content of the component (A) of 0.15 or more and 1.3 or less.

According to the oil-based cosmetic of the present invention, since it has high water resistance, it is possible to effectively suppress color transfer not only immediately after application but also after a long time has passed since application, which is also good. You can also feel comfortable using it because it gives you a feeling.

Hereinafter, the present invention will be described in detail.
The oil-based cosmetics of the present invention have the following components (A), (B), (C), and (D):
(A) Cellular derivative having a molecular weight of 300,000 or more and 40 million or less 1% by mass or more and 50% by mass or less (B) Cellular derivative having a molecular weight of 1000 or more and less than 300,000 1% by mass or more and 50% by mass or less (C) Component (B) 25 Ester oil that dissolves at 0.1 g / g or more at ° C. 0.5% by mass or more and 50% by mass or less (D) Volatile hydrocarbon oil Contains 5% by mass or more and 85% by mass or less and contains component (B) The mass ratio ((B) / (A)) of the amount to the content of the component (A) is 0.15 or more and 1.3 or less.

As described above, the cellulose derivative [component (A)] having a molecular weight of 300,000 to 40 million and the cellulose derivative [component (B)] having a molecular weight of 10 to 300,000 have a specific content and a specific limited mass ratio. By coexisting in the oil-based cosmetics of the present invention, a layer is formed by the component (B) on the outside of the layer formed by the component (A) in combination with a specific amount of the component (C) and the component (D). Therefore, it is considered that high water resistance can be exhibited and color transfer can be effectively suppressed.
The effect of suppressing color transfer is, for example, when the oily cosmetic of the present invention contains a coloring pigment or the like, the oily cosmetic is applied to the lips and then the contents such as water contained in a cup or the like are drunk. This means the effect of suppressing the transfer of the coloring pigment from the lips to the cup or the like and the color transfer and adhesion (secondary adhesion of the color) when the lips are pressed against the edge of the cup or the like.

The oily cosmetic of the present invention contains 1% by mass or more and 50% by mass or less of a cellulose derivative having a molecular weight of 300,000 or more and 40 million or less as a component (A), and has a molecular weight of 1,000 or more and less than 300,000 as a component (B). It contains 1% by mass or more and 50% by mass or less of a cellulose derivative. That is, the cellulose derivative of the component (A) and the cellulose derivative of the component (B) are not limited as long as they have a cellulose skeleton in the main chain.

The cellulose derivative of the component (A) and the cellulose derivative of the component (B) are obtained by substituting ^{a part of the hydroxyl groups of the precursor cellulose as a raw material with one —OMR group.} Here, M represents CH ₂ or a carbonyl group C = O, and R ¹ is a linear or branched alkyl group or alkenyl group having 3 to 40 carbon atoms.

The linear alkyl group in R ¹ 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, nonadesyl 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 heptritoriacontyl group, an octatriacontyl group, a nonatriacontyl group and a tetracontyl group.

The alkyl group of the branched chain in R ¹ includes 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-hexadecyl icosyl group And so on.

Examples of the linear alkenyl group in R ¹ include dodecenyl, tridecenyl, tetradecenyl, pentadecenyl, hexadecenyl, heptadecenyl, octadecenyl, nonadesenyl, icosenyl, henicosenyl, docosenyl, tricosenyl, tetracosenyl, pentacosenyl, hexacosenyl, heptacosenyl and the like.

Examples of the alkenyl group of the (iv) branched chain in R ¹ include isotridecenyl, isooctadecenyl, isotoriacontenyl, 2-butyloctenyl, 2-hexyldecenyl, 2-octyldodecenyl, and 2-decyltetradecenyl. , 2-Dodecylhexadecenyl and the like.

Among them, R ¹ is preferably a linear alkyl group from the viewpoint of imparting smoothness when applying an oil-based cosmetic. Further, from the viewpoint of ease of stretching and good adhesion, the number of carbon atoms is preferably 9 or more, more preferably 11 or more, preferably 21 or less, more preferably 17 or less, and even more preferably 15.

Components (A) and the hydroxyl groups of the precursor cellulose as a raw material of the (B), substitution rate to -O-M-R ¹ group is a solubility in later-described component (C) and component (D) It is preferably 45 mol% or more, more preferably 48 mol% or more, still more preferably 51 mol% or more, from the viewpoint of increasing, not feeling stiff or taut at the time of application, and suppressing color transfer. From the viewpoint of increasing the resistance to twisting and water resistance, it is preferably 95 mol% or less, more preferably 94 mol% or less, and further preferably 92 mol% or less. Further, the substitution rate of the hydroxyl group of the precursor cellulose which is the raw material of the component (A) and the component (B) with ^one -OM-R group is preferably 45 to 95 mol%, preferably 48 to 94 mol%. Is more preferable, and 51 to 92 mol% is further preferable.
It is preferable that at least one of the component (A) and the component (B) is a cellulose derivative having the above substitution rate, and both the component (A) and the component (B) are the cellulose derivatives having the above substitution rate. Is more preferable.

The hydroxyl groups of the precursor cellulose, which is the raw material of the component (A) and the component (B), are the component (A) and the component (A) from the viewpoint of maintaining a good usability and ensuring good dispersibility of the coloring material and the pigment. during component (B), without all substituted into -O-M-R ¹ group, it is preferable that the moderately residual. Specifically, the hydroxyl groups remaining in the component (A) and the component (B) are preferably 5 mol% or more of the total hydroxyl groups of the precursor cellulose which is the raw material of the component (A) and the component (B). , 6 mol% or more is more preferable, 8 mol% or more is further preferable, 55 mol% or less is preferable, 52 mol% or less is more preferable, and 49 mol% or less is further preferable. The hydroxyl groups remaining in the component (A) and the component (B) are preferably 5 to 55 mol% of the total hydroxyl groups of the precursor cellulose which is the raw material of the component (A) and the component (B). It is more preferably ~ 52 mol%, and further preferably 8 to 49 mol% or more.

The molecular weight of the cellulose derivative of the component (A) is 300,000 or more, preferably 350,000, from the viewpoint of enhancing the solubility in the component (C) and the component (D) described later, the water resistance, and the smooth feel. The above, more preferably 400,000 or more, further preferably 500,000 or more, 40 million or less, preferably 30 million or less, more preferably 20 million or less, still more preferably 600. It is less than 10,000.

The molecular weight of the cellulose derivative of the component (B) is less than 300,000, preferably 150,000 or less, from the viewpoint of solubility in the component (C) and the component (D) described later, water resistance, and a smooth feel. It is more preferably 100,000 or less, further preferably 70,000 or less, 1000 or more, preferably 2000 or more, more preferably 3000 or more, still more preferably 4000 or more. Further, it is more preferably 5,000 or more, still more preferably 10,000 or more, still more preferably 15,000 or more, and even more preferably 35,000 or more.

Regarding the distribution of the molecular weight of the component (A), the content of the cellulose derivative having a molecular weight of 500,000 or more and less than 6 million is preferably 50% by mass or more in the component (A) from the viewpoint of effectively suppressing color transfer. The content of the cellulose derivative of 350,000 or more and less than 30 million is preferably 75% by mass or more. The content of the cellulose derivative having a molecular weight of 300,000 or more and less than 700,000 is preferably 5% by mass or more and 30% by mass or less in the component (A), and the content of the cellulose derivative having a molecular weight of 700,000 or more and less than 1.5 million is the component. The content of the cellulose derivative having a molecular weight of 1.5 million or more and less than 3.5 million is preferably 15% by mass or more and 40% by mass or less in the component (A), and the molecular weight is 350. The content of the cellulose derivative of 10,000 or more and less than 7.5 million is preferably 10% by mass or more and 35% by mass or less in the component (A), and the content of the cellulose derivative having a molecular weight of 7.5 million or more and less than 18 million is in the component (A). The content of the cellulose derivative having a molecular weight of 18 million or more and less than 40 million is preferably 0.1% by mass or more and 10% by mass or less in the component (A).
On the other hand, regarding the distribution of the molecular weight of the component (B), the content of the cellulose derivative having a molecular weight of 15,000 or more and less than 150,000 is preferably 50% by mass or more in the component (B), and the molecular weight is 10,000 or more and less than 300,000. The content of the cellulose derivative is preferably 75% by mass or more in the component (B). The content of the cellulose derivative having a molecular weight of 1,000 or more and less than 20,000 is preferably 0.1% by mass or more and 15% by mass or less in the component (B), and the content of the cellulose derivative having a molecular weight of 20,000 or more and less than 50,000 is The content of the cellulose derivative having a molecular weight of 50,000 or more and less than 150,000 is preferably 10% by mass or more and 50% by mass or less in the component (B), preferably 20% by mass or more and 50% by mass or less. The content of the cellulose derivative of 150,000 or more and less than 300,000 is preferably 10% by mass or more and 50% by mass or less in the component (B).

The molecular weight (Mw) of the cellulose derivative of the component (A) and the component (B) is determined by gel permeation chromatography (using a calibration curve and a refractive index detector defined by using a chloroform solvent and linear polystyrene as a standard). The content of the cellulose derivative having the above-mentioned predetermined molecular weight in the component (A) and the component (B), which is determined by measurement, is obtained by obtaining the integrated value of each peak corresponding to each molecular weight, and then based on the integrated value. , It is obtained by converting the total content of the component (A) and the component (B) into the content of the cellulose derivative having each molecular weight as the total amount.

The content of the component (A) is 1% by mass or more, preferably 1.5% by mass or more, more preferably 1.5% by mass or more in the oily cosmetic of the present invention from the viewpoint of effectively suppressing color transfer. 2% by mass or more, more preferably 3% by mass or more, still more preferably 5% by mass or more, still more preferably 6% by mass or more, 50% by mass or less, preferably 30% by mass. It is 0% by mass or less, more preferably 20% by mass or less, further preferably 15% by mass or less, still more preferably 10% by mass or less, still more preferably 8% by mass or less, and further. It is preferably 7.2% by mass or less. The content of the component (A) is 1% by mass or more and 50% by mass or less, preferably 1.5 to 30% by mass, and more preferably 2 to 20% by mass in the oily cosmetic of the present invention. It is by mass, more preferably 2 to 15% by mass, still more preferably 3 to 10% by mass, and even more preferably 6 to 7.2% by mass.

The content of the component (B) is 1% by mass or more, preferably 1.5% by mass or more in the oil-based cosmetic of the present invention from the viewpoint of effectively enhancing both the feel and water resistance. It is more preferably 2% by mass or more, further preferably 3% by mass or more, 50% by mass or less, preferably 30% by mass or less, still more preferably 20% by mass or less, and even more preferably. Is 15% by mass or less, more preferably 10% by mass or less, still more preferably 8% by mass or less, still more preferably 7% by mass or less. The content of the component (B) in the oily cosmetic of the present invention is 1% by mass or more and 50% by mass or less, preferably 1.5 to 30% by mass, and more preferably 2 to 20% by mass. It is by mass%, more preferably 2 to 15% by mass, still more preferably 3 to 10% by mass, still more preferably 3 to 8% by mass, and even more preferably 3 to 7% by mass. be.

The mass ratio ((B) / (A)) of the content of the component (B) to the content of the component (A) does not feel stiff or taut at the time of application, and the lips and skin after application are smooth. It is 0.15 or more from the viewpoint that color transfer is effectively suppressed immediately after application and even after a long period of time, water resistance is high, and oily cosmetics applied from lips and skin can be removed cleanly. It is preferably 0.16 or more, more preferably 0.18 or more, still more preferably 0.2 or more, still more preferably 0.3 or more, and even more preferably 0.4 or more. It is 1.3 or less, preferably 1.2 or less, more preferably 1.1 or less, and further preferably 1.0 or less. The mass ratio ((B) / (A)) of the content of the component (B) to the content of the component (A) is 0.15 to 1.3, preferably 0.16 to 1. There is .2, more preferably 0.18 to 1.1, still more preferably 0.2 to 1.0, and even more preferably 0.3 to 1.0.

The total content of the component (A) and the content of the component (B) is preferably 2 to 50% by mass, more preferably 2 to 50% by mass, in the oil-based cosmetics of the present invention from the viewpoint of effectively suppressing color transfer. Is 2 to 45% by mass, more preferably 2 to 40% by mass, still more preferably 2 to 35% by mass, still more preferably 3 to 35% by mass, and even more preferably 4 to 4 to 35% by mass. It is 30% by mass.
Further, the cellulose derivative having a molecular weight of 100,000 or more and 400,000 or less is 20% by mass or less of the total of the content of the component (A) and the content of the component (B) from the viewpoint of effectively suppressing color transfer. It is preferably 10% by mass or less, and more preferably 10% by mass or less.

In the oily cosmetic of the present invention, the high molecular weight cellulose derivative of the component (A) and the low molecular weight cellulose derivative of the component (B) are mixed. For example, the content of the cellulose derivative of the component (A) is preferably 30% by mass or more, more preferably 40% by mass or more, based on the total content of the component (A) and the component (B). It is more preferably 45% by mass or more, preferably 90% by mass or less, more preferably 75% by mass or less, and further preferably 55% by mass or less. The content of the cellulose derivative of the component (A) is preferably 30 to 90% by mass, more preferably 40 to 75% by mass, based on the total content of the component (A) and the component (B). It is more preferably 45 to 55% by mass.
The content of the cellulose derivative of the component (B) is preferably 10% by mass or more, more preferably 25% by mass or more, based on the total content of the component (A) and the component (B). It is more preferably 45% by mass or more, preferably 70% by mass or less, more preferably 60% by mass or less, and further preferably 55% by mass or less. The content of the cellulose derivative of the component (B) is preferably 10 to 70% by mass, more preferably 25 to 60% by mass, based on the total content of the component (A) and the component (B). It is more preferably 45 to 55% by mass.
The content of the cellulose derivative having the above-mentioned predetermined molecular weight with respect to the total content of the component (A) and the component (B) is determined by gel permeation chromatography (chloroform solvent) using the oily cosmetic of the present invention as a measurement target. , A calibration curve defined with linear polystyrene as a standard, using a refractive refractometer), obtain the integrated value of each peak corresponding to each molecular weight, and then based on the integrated value, the component (A) and the component ( It is obtained by converting the total content of B) into the content of the cellulose derivative having each molecular weight, which is the total amount.

The cellulose derivative of the component (A) and the cellulose derivative of the component (B) 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.

As the precursor cellulose for inducing the component (A) and the precursor cellulose for inducing the component (B), commercially available products may be used, but (i) unsubstituted cellulose, (ii) acetyl cellulose, and acetyl butyl. Short-chain acylated cellulose such as cellulose, (iii) methyl cellulose, short-chain alkyl etherified cellulose such as ethyl cellulose, (iv) hydroxyalkyl group, glyceryl ether group, or (mono) alkyl glyceryl ether group-modified cellulose, and (V) One or more selected from those having a constituent unit represented by the following formula (1), and acid halide having a linear or branched alkyl or alkenyl group having 3 to 40 carbon atoms. Examples thereof include precursor cellulose reacted with, and precursor cellulose reacted with a sulfonic acid ester such as alkyl halide or alkyl mesylate. Among them, in the present invention, one or more selected from those having a structural unit represented by the following formula (1) in (v), and a linear or branched chain having 3 to 40 carbon atoms. Precursor cellulose obtained by reacting a precursor cellulose having a reaction with an acid halide having an alkyl or alkenyl group of 3 to 40 carbon atoms with an acid halide having a linear or branched alkyl or alkenyl group having 3 to 40 carbon atoms is preferable.

In the formula, R ² represents a linear or branched alkylene group having 2 or more and 8 or less carbon atoms, and n indicates a ^{number in which the average number of moles of R 2} O added per glucose unit is 0.1 or more and 10 or less. ..
As R ² , 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. Further, as n, the ^{number of R 2} O added moles per glucose unit is preferably 0.3 to 5, more preferably 0.5 to 4.5, and 1 to 4 is preferable. More preferred.

Further, the component (A) is preferably a cellulose derivative derived from cellulose having a mass average molecular weight of 300,000 to 4 million [referred to as cellulose (a)], and the component (B) has a mass average molecular weight of 1000 to 30. It is preferably a cellulose derivative derived from 10,000 celluloses [referred to as cellulose (b)].

When the component (A) is obtained from the above-mentioned cellulose (a) and the above-mentioned cellulose (b), the cellulose (a) and the cellulose (b) are hydroxyethyl cellulose and hydroxypropyl cellulose. , Hydroxypropyl methyl cellulose, glyceryl cellulose, methyl glyceryl cellulose and the like, preferably one or more, more preferably one or two selected from hydroxyethyl cellulose and hydroxypropyl cellulose, and even more preferably hydroxypropyl cellulose. ..
Further, from the viewpoint of further enhancing the effect of the present application, it is preferable that the cellulose (a) and the cellulose (b) are the same type of cellulose and differ only in the mass average molecular weight.

The mass average molecular weight (Mw) of the cellulose (a) does not cause color transfer in combination with the component (B), and is good from the viewpoint of ensuring the solubility of the component (C) and the component (D) described later in the oil agent. From the viewpoint of maintaining the feel, it is preferably 300,000 to 4 million, more preferably 350,000 to 3 million, and even more preferably 400,000 to 2 million. From the same viewpoint, the mass average molecular weight (Mw) of cellulose (b) is preferably 1,000 to 100,000, more preferably 5,000 to 90,000, and even more preferably 10,000 to 80,000.

In obtaining the oil-based cosmetic of the present invention, the cellulose derivative of the component (A) and the cellulose derivative of the component (B) are used in the cellulose (a) and the cellulose (b) which are the raw material components for inducing the respective components. , The component (A) and the component (B) may be obtained by separately substituting a part of the hydroxyl group, and then the component (A) and the component (B) may be mixed, and the cellulose (a) and the cellulose ( The b) may be collectively mixed in advance, and then a part of the hydroxyl groups in the cellulose (a) and the cellulose (b) may be replaced in a batch to obtain a mixture of the component (A) and the component (B).

In the oily cosmetic of the present invention, as the component (C), the component (A) is 0.1 g / g at 25 ° C. (g / g = the dissolved amount (g) of the component (B) around 1 g of the component (C)). Contains the ester oil that dissolves as described above. Since the ester oil of the component (C) has excellent compatibility with not only the component (A) but also the component (B), the component (D) described later volatilized after being applied to the lips, skin and the like. Even afterwards, it is possible to effectively prevent it from becoming stiff or sticky. The ester oil of the component (C) dissolves the component (A) in an amount of 0.1 g / g or more at 25 ° C., preferably dissolves the component (A) in an amount of 0.3 g / g or more at 25 ° C., and more preferably the component (A). A) is dissolved at 25 ° C. in an amount of 0.5 g / g or more, more preferably the component (A) is dissolved in an amount of 0.8 g / g or more at 25 ° C., and further preferably the component (A) is dissolved in an amount of 1.0 g at 25 ° C. It is even more preferable that the ester oil dissolves in an amount of / g or more or infinitely incompatibles with the component (A).
Further, the ester oil of the component (C) dissolves the component (B) at 25 ° C. of 0.1 g / g or more, preferably the component (B) at 25 ° C. of 0.3 g / g or more, and more preferably. The component (B) is dissolved at 25 ° C. for 0.5 g / g or more, more preferably the component (B) is dissolved at 25 ° C. for 0.8 g / g or more, and further preferably the component (B) is dissolved at 25 ° C. for 1 It is even more preferable that the ester oil dissolves at least 0.0 g / g or infinitely compatibles with the component (B).

The ester oil of component (C) is preferably non-volatile. In the present application, the non-volatile ester oil is an ester oil having no flash point at 35 to 87 ° C., and preferably liquid or paste-like fluid at 25 ° C.

The ester oil of the component (C) includes isotridecyl isononanoate, diisostearyl malate, isostearyl myristate, octyldodecyl ricinoleate, neopentyl glycol dicaprate, diglyceryl diisostearate, glyceryl monomyristate monoisostearate, and para. Examples thereof include one or more selected from 2-ethylhexyl methoxycinnamate, tocopherol acetate, diglyceryl monoisostearate and the like.
Among them, the ester oil having a branched chain has excellent compatibility with the component (B) and does not become stiff or sticky even after the component (D) has volatilized after being applied to the lips or skin. Preferably, isotridecyl isononanoate, diisostearyl malate, isostearyl myristate, octyldodecyl ricinoleate, diglyceryl diisostearate, glyceryl monomyristate monoisostearate, 2-ethylhexyl paramethoxysilicate, diglyceryl monoisostearate More preferably, isotridecyl isononanoate and diisostearyl malate are even more preferable.

The content of the component (C) is excellent in compatibility between the component (A) and the component (B), and the component (D) does not become stiff or sticky even after the component (D) has volatilized after being applied to the lips or skin. In the oil-based cosmetics of the present invention, 0.5% by mass or more, preferably 1% by mass or more, from the viewpoint of forming a uniform film on the lips and effectively suppressing color transfer. Yes, more preferably 1.5% by mass or more, still more preferably 2% by mass or more, still more preferably 5% by mass or more, still more preferably 10% by mass or more, and even more preferably. It is 15% by mass or more, 50% by mass or less, preferably 40% by mass or less, more preferably 35% by mass or less, still more preferably 33% by mass or less, and further preferably 20% by mass. % Or less, and more preferably 18.3% by mass or less. The content of the component (C) in the oily cosmetic of the present invention is 0.5% by mass or more and 50% by mass or less, preferably 1 to 40% by mass, and more preferably 1.5. It is ~ 35% by mass, more preferably 2-33% by mass, still more preferably 5 to 20% by mass, and even more preferably 10 to 18.3% by mass.

The total content of the component (B) and the content of the component (C) is preferably 1 to 50% by mass, more preferably 1 to 50% by mass, in the oil-based cosmetics of the present invention from the viewpoint of effectively suppressing color transfer. Is 1.5 to 45% by mass, more preferably 2 to 40% by mass, and even more preferably 2.5 to 45% by mass. Further, it is more preferably 3 to 40% by mass, and even more preferably 3.4 to 35% by mass.

The mass ratio ((B) / (C)) of the content of the component (B) to the content of the component (C) ensures compatibility of the component (B) with the component (C) and provides water resistance. From the viewpoint of enhancing and effectively suppressing color transfer, it is preferably 0.01 or more, more preferably 0.02 or more, further preferably 0.03 or more, preferably 7 or less, and more preferably. Is 6 or less, more preferably 5 or less.

The mass ratio ((A) / (C)) of the content of the component (A) to the content of the component (C) does not feel stiff or taut at the time of application, and the lips and skin after application are smooth. It is preferably 0.1 or more from the viewpoint that color transfer is effectively suppressed immediately after application and even after a long period of time, water resistance is high, and oily cosmetics applied from the lips and skin can be removed cleanly. It is more preferably 0.12 or more, further preferably 0.14 or more, still more preferably 0.30 or more, preferably 5.0 or less, and more preferably 4.5 or less. It is more preferably 4.0 or less, still more preferably 1 or less, and even more preferably 0.5 or less. The mass ratio ((A) / (C)) of the content of the component (A) to the content of the component (C) is preferably 0.1 to 1.25, more preferably 0.12. It is ~ 1, and more preferably 0.14 to 0.65.

The oily cosmetic of the present invention contains a volatile hydrocarbon oil as a component (D). Volatile means having a flash point of 35 to 87 ° C.
Examples of the volatile hydrocarbon oil of the component (D) include paraffinic hydrocarbon oils such as n-decane, n-undecane, and n-dodecane; isoparaffinic hydrocarbon oils such as isodecane, isododecane, and hydrogenated polyisobutene; One or more selected from cyclic paraffin hydrocarbon oils such as cyclodecane and cyclododecane can be mentioned. Of these, hydrocarbon oils having 8 to 16 carbon atoms are preferable, hydrocarbon oils having 10 to 16 carbon atoms are more preferable, and hydrocarbon oils having 12 carbon atoms are even more preferable. Of these, isoparaffinic hydrocarbon oil is preferable, and isododecane and hydrogenated polyisobutene having 12 carbon atoms are more preferable.
Examples of commercially available products include Marzazole R (manufactured by Maruzen Petrochemical Co., Ltd .: flash point 48 ° C.), Pearl Dream 3 (manufactured by NOF Corporation: flash point 61 ° C.), and the like.

The content of the component (D) is excellent in compatibility with other components, and even after the component (D) volatilizes after being applied to the lips, skin, etc., it does not become stiff or sticky, and is on the lips, etc. From the viewpoint of forming a uniform film and effectively suppressing color transfer, the oil-based cosmetic of the present invention contains 5% by mass or more, preferably 35% by mass or more, and more preferably 40% by mass. % Or more, more preferably 45% by mass or more, still more preferably 60% by mass or more, 85% by mass or less, preferably 80% by mass or less, and more preferably 78% by mass or less. It is more preferably 75% by mass or less, further preferably 70% by mass or less, and further preferably 68% by mass or less. The content of the component (D) in the oily cosmetic of the present invention is 5% by mass or more and 85% by mass or less, preferably 35 to 80% by mass, and more preferably 40 to 78% by mass. It is more preferably 45 to 75% by mass, still more preferably 60 to 70% by mass, and even more preferably 60 to 68% by mass.

From the viewpoint of further enhancing the effect of the present application, the total content of the component (C) and the component (D) is preferably 70% by mass or more, more preferably 75 in the oil-based cosmetics of the present invention. It is 9% by mass or more, more preferably 78% by mass or more, still more preferably 80% by mass or more, preferably 98% by mass or less, more preferably 95% by mass or less, still more preferably 93. It is 91.5% by mass or less, more preferably 91.5% by mass or less, and further preferably 90% by mass or less.

The mass ratio ((D) / (C)) of the content of the component (D) to the content of the component (C) does not feel stiff or taut at the time of application, and the lips and skin after application are smooth. It is preferably 0.7 or more from the viewpoint that color transfer is effectively suppressed immediately after application and even after a long period of time, water resistance is high, and oily cosmetics applied from the lips and skin can be removed cleanly. It is more preferably 1.0 or more, further preferably 1.4 or more, preferably 40 or less, more preferably 30 or less, still more preferably 20 or less, and even more preferably. It is 9 or less, more preferably 7 or less, and even more preferably 5 or less. The mass ratio ((D) / (C)) of the content of the component (D) to the content of the component (C) is preferably 0.7 to 40, more preferably 1.0 to 30. It is more preferably 1.4 to 20, still more preferably 1.4 to 9, still more preferably 1.4 to 7, and even more preferably 1.4 to 5.

Furthermore, the oily cosmetics of the present invention can contain a solid wax at 25 ° C. The term "solid at 25 ° C." refers to a solid that exhibits the properties of a solid at 25 ° C. and has 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. For example, mineral waxes such as ozokelite and selecin; petroleum waxes such as paraffin and microcrystallin wax; , Synthetic hydrocarbons such as polyethylene wax; Vegetable waxes such as carnauba wax, candelilla wax, rice wax, wood wax, sunflower wax; Animal waxes such as beeswax and whale wax; Synthetic waxes such as silicone wax and synthetic beeswax, etc. One kind or two or more kinds selected from are mentioned.

The wax solid at 25 ° C. gives the oily cosmetics an appropriate hardness, and from the viewpoint of suppressing oil seepage and imparting moisture, the melting point is preferably 65 ° C. or higher and 140 ° C. or lower, and 70 ° C. or higher and 90 ° C. or lower. More preferred. Further, from the viewpoint of imparting a smooth feeling of use, it is preferable not to contain wax having a melting point exceeding 90 ° C.
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 1 or more and 150 or less. Is preferable, and 15 or more and 110 or less are more preferable.

The content of the wax solid at 25 ° C. is preferably less than 5% by mass, preferably 3% by mass or less, in the oily cosmetic of the present invention from the viewpoint of suppressing the kinking of the cosmetic on the lips and the like. More preferably, 1% by mass or less is further preferable, and 0.5% by mass or less is even more preferable.

Furthermore, the oil-based cosmetics of the present invention can contain powders. The powder is not limited as long as it is used in ordinary cosmetics, and one or more selected from extender pigments, coloring pigments, brilliant pigments and the like can be used.
Examples of extender pigments include silicic acid, silicic anhydride, magnesium silicate, talc, sericite, mica, synthetic mica, glass flakes, synthetic gold mica, kaolin, clay, bentonite, bismuth oxychloride, zirconium oxide, and magnesium oxide. , Inorganic pigments such as aluminum oxide, calcium sulfate, barium sulfate, magnesium sulfate, calcium carbonate, magnesium carbonate and composite powders thereof.

Examples of the coloring pigment include metal oxides such as titanium oxide, zinc oxide, yellow iron oxide, red iron oxide, black iron oxide, dark blue, ultramarine blue, chromium oxide, and chromium hydroxide; and metal complexes such as manganese violet and cobalt titanate; Furthermore, inorganic pigments such as carbon black; Red No. 3, Red No. 104, Red No. 106, Red No. 201, Red No. 202, Red No. 204, Red No. 205, Red No. 220, Red No. 226, Red No. 227, Red No. 228. No., Red No. 230, Red No. 401, Red No. 405, Red No. 505, Orange No. 203, Orange No. 204, Orange No. 205, Yellow No. 4, Yellow No. 5, Yellow No. 401, Blue No. 1, Blue No. 404, etc. Synthetic organic pigments; natural organic pigments such as β-carotene, caramel, and paprika pigments.

As bright pigments, titanium oxide, iron oxide, silicon oxide, dark blue, chromium oxide, tin oxide, chromium hydroxide, gold, etc. are used on the surface of plate-like powders such as mica, synthetic gold mica, glass, silica, and alumina. Film raw fabrics such as those coated with colorants such as silver, carmine, and organic pigments, polyethylene terephthalate / polymethylmethacrylate laminated powder, polyethylene terephthalate / aluminum vapor deposition powder, polyethylene terephthalate / gold vapor deposition laminated powder, etc. can be made into arbitrary shapes. Cut or the like can be used.
As these powders, those which have been subjected to various surface treatments such as water-repellent treatment and water-repellent / oil-repellent treatment by a usual method can also be used.

The content of the powder in the oil-based cosmetic of the present invention is preferably 0.01 to 20% by mass, more preferably 0.05 to 10% by mass.

Further, in the oily cosmetics of the present invention, in addition to the above-mentioned components, components used in ordinary cosmetics, for example, oily components other than the components (C) and (D), surfactants, lower alcohols, polyhydric alcohols, etc. It can contain polymer compounds other than the components (A) and (B), ultraviolet absorbers, antioxidants, dyes, fragrances, coloring materials, antifouling agents, moisturizers, water and the like.

The oily cosmetic of the present invention is a cosmetic having an oil 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 gloss, lip liner; Makeup cosmetics such as mascara, eye liner, eye shadow, teak color, foundation, concealer; cream, milky lotion, serum, massage agent, deodorant, sunscreen, hair growth It can be an agent, hair color, hair wax, hair foam, etc. Among them, it is suitable as a lip cosmetic selected from lipsticks, lip glosses, and lip liners.

Hereinafter, the present invention will be specifically described based on examples. Unless otherwise specified in the table, the content of each component indicates mass%.
The mass average molecular weight and the average acyl (ester) substitution degree were measured by the following methods.

<< 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. A chloroform solution of 1 mmol / L N, N-dimethyldodecylamine (Farmin DM20, manufactured by Kao Corporation) was used as the eluent. The column temperature was 40 ° C. and the flow rate was 1.0 mL / min.
Further, the content of the cellulose derivative having a molecular weight of 300,000 or more and 40 million or less and the content of the cellulose derivative having a molecular weight of 1,000 or more and less than 300,000 with respect to the total content of the component (A) and the component (B) are the same as described above. It was measured by the method of. That is, the total content of the component (A) and the component (B) is calculated by using the integrated value of each peak corresponding to each molecular weight in the gel permeation chromatography using each of the obtained oily cosmetics as a measurement target. It was converted into a content (mass%) of 100% by mass.

<< Measurement of average acyl (ester) substitution degree >>
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.

[Production Example 1: Production of Cellulose Derivative A1]
At 50 ° C. in a mixed solvent of toluene under nitrogen and methyl ethyl ketone, 57.8 g (0.165 mol) of hydroxypropyl cellulose (mass average molecular weight 490,000, Selney M; manufactured by Nippon Soda Co., Ltd.) and 94 g (1.01 mol) of 3- Methylpyridine is added and dissolved. 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 a hydroxypropyl cellulose palmitic acid ester. (Mass average molecular weight 1.5 million, average acyl substitution degree is 60 mol% of all hydroxyl groups)

[Production Example 2: Production of Cellulose Derivative A2]
A hydroxypropyl cellulose palmitic acid ester was obtained in the same manner as in Production Example 1 except that the dropping amount of palmitoyl chloride in Production Example 1 was changed to 30.0 g (1.09 mol). (Mass average molecular weight 870,000, average acyl substitution degree is 90 mol% of all hydroxyl groups)

[Production Example 3: Production of Cellulose Derivative B1]
At 50 ° C. in a mixed solvent of toluene under nitrogen and methyl ethyl ketone, 94 g (1.01 mol) of 57.8 g (0.165 mol) of hydroxypropyl cellulose (mass average molecular weight 26,000, Selney SSL; manufactured by Nippon Soda Co., Ltd.) was added. Add 3-methylpyridine to dissolve. 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 a hydroxypropyl cellulose palmitic acid ester. (Mass average molecular weight 40,000, average acyl substitution degree is 60 mol% of all hydroxyl groups)

[Production Example 4: Production of Cellulose Derivative B2]
A hydroxypropyl cellulose palmitic acid ester was obtained in the same manner as in Production Example 3 except that the dropping amount of palmitoyl chloride in Production Example 3 was changed to 30.0 g (1.09 mol). (Mass average molecular weight 30,000, average acyl substitution degree is 90 mol% of all hydroxyl groups)

[Production Example 5: Production of a mixture of cellulose derivative A1 and cellulose derivative B1]
28.9 g (8.25 × 10-2 mol) of hydroxypropyl cellulose (mass average molecular weight 490,000, Selney M; manufactured by Nippon Soda Co., Ltd.), 28.9 g (8.) at 50 ° C. in a mixed solvent of toluene under nitrogen and methyl ethyl ketone. To dissolve 25 × 10-2 mol) of hydroxypropyl cellulose (mass average molecular weight 26,000, Selney SSL; manufactured by Nippon Soda Co., Ltd.), add 94 g (1.01 mol) of 3-methylpyridine. 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 a hydroxypropyl cellulose palmitic acid ester. (Mass average molecular weight 1.5 million, average acyl substitution degree is 60 mol% of all hydroxyl groups)

[Examples 1 to 5 and Comparative Examples 1 to 5]
According to the formulation shown in Table 1, each raw material other than the coloring material was heated and dissolved using the cellulose derivatives A1 to A2 and B1 to B2 obtained in Production Examples 1 to 4 above, and then uniformly mixed, and then up to 40 ° C. After cooling, the coloring material was added. Then, after uniformly dispersing with a disperser to defoam, the mixture was poured into a container to produce each oil-based cosmetic (lipstick).
Using each of the obtained oily cosmetics, the resistance to color transfer was evaluated according to the following method.
The results are shown in Table 1.

<< Evaluation of difficulty in color transfer >>
Using each of the obtained oily cosmetics, apply it to the lips by a specialized panelist, and 10 minutes later, when drinking water in the cup, the difficulty of color transfer to the cup with the lips is set as a 5-step standard. The sensory evaluation was performed separately. Criterion "1" indicates that the water resistance is the lowest and color transfer is easy, and standard "5" indicates that the water resistance is the highest and color transfer is difficult, and 3 or more is passed.

All of the oil-based cosmetics (lipsticks) obtained in the examples did not easily transfer color after application and provided a good feel.
Further, even when the mixture of the cellulose derivative A1 and the cellulose derivative B1 obtained in Production Example 5 is used, the same results as those of these Examples can be obtained.

Claims (3)

The following components (A), (B), (C), and (D):
The (A) molecular weight 400,000 or more 6 million or less of the cellulose derivative 1% by weight to 50% by weight or less (B) molecular weight of 5000 or more 15 50 wt% cellulose derivative 1% by mass to less than 10,000 or less the component (C) (A) 25 Ester oil that dissolves at 0.1 g / g or more at ° C. 0.5% by mass or more and 50% by mass or less (D) Volatile hydrocarbon oil 5% by mass or more and 85% by mass or less, and the content of component (B) mass ratio of the content of the component (a) ((B) / (a)) is Ri der 0.15 to 1.3, and components (a) and (B) is the following formula (1) :

(In the formula, R ² indicates an ethylene group or a propylene group, and n indicates a ^{number in which the average number of moles of R 2} O added per glucose unit is 0.1 or more and 10 or less.)
In oily cosmetics that will be derived from a precursor cellulose having a structural unit represented. The oily cosmetic according to claim 1, wherein the total content of the component (A) and the content of the component (B) is 2 to 50% by mass. The oily cosmetic according to claim 1 or 2 , wherein the mass ratio ((A) / (C)) of the content of the component (A) to the content of the component (C) is 0.1 or more and 5 or less.