JP6224316B2 - Lip cosmetics - Google Patents

Description

  The present invention relates to a lip cosmetic.

Various waxes are blended in sticky cosmetics such as lipsticks in order to maintain shape retention, and among them, polyethylene wax is used as being hard and excellent in shape retention.
For example, Patent Document 1 describes a stick-type cosmetic that combines polyethylene wax, microcrystalline wax, and liquid oil, and has excellent shape retention, feeling of use, and gloss. Patent Document 2 describes a stick cosmetic that contains polyethylene wax as a solid wax in an amount of 5% by mass to 8% by mass and is excellent in usability, moldability, shape retention, and gloss. .

JP 2008-133205 A JP 2011-98935 A

  When the present inventor uses polyethylene wax for lip cosmetics, although the shape retention is excellent, the cosmetics become hard, the amount of adhesion to the lips and the applicator decreases, and the lips after application are rubbed together I found the problem that the touch was bad. Moreover, when polyethylene wax and microcrystalline wax were used in combination, the problem of poor stability at high temperatures was also found.

  The present inventor has found that a lip cosmetic that solves the above problems can be obtained by combining two types of polyethylene wax having a specific melting point and penetration and using hydrogenated polyisobutene having a specific molecular weight.

The present invention includes the following components (A), (B) and (C):
(A) 0.2 to 30% by mass of polyethylene wax having a melting point of 83 to 120 ° C. and a penetration of 10 to 40 at 25 ° C.
(B) polyethylene wax having a melting point of 83 to 135 ° C. and a penetration of 0.1 to 5 at 25 ° C.,
(C) The present invention relates to a lip cosmetic containing hydrogenated polyisobutene having an average molecular weight of 800 or more.

  The lip cosmetic of the present invention is smoothly broken when applied to lips and applicators, has excellent adhesion to the lips and applicators, and has a good feel when the lips after application are rubbed together. It has excellent appearance stability. Furthermore, even if the storage temperature changes, the hardness is stably maintained.

The polyethylene wax of component (A) used in the present invention has a melting point of 83 to 120 ° C., preferably 83 to 115 ° C., preferably 83 to 110, from the viewpoint of excellent oil bleeding suppression and hardness retention during high temperature storage. ° C is more preferred.
For the same reason, the molecular weight of component (A) is preferably 500 to 3000, more preferably 500 to 2500, and still more preferably 500 to 2000.

In addition, component (A) has a penetration of 10 to 40 at 25 ° C. because it smoothly collapses when applied to the lips and applicator and has excellent adhesion to the lips and applicator. 30 is preferable and 10-25 is more preferable.
In the present invention, the penetration is determined with a wax sample kept at 25 ± 0.1 ° C. on a prescribed needle (needle mass 2.5 ± 0.02 g, needle holder mass 47.5 ± 0.02 g). , The weight of the weight 50 ± 0.05 g) measures the length of penetration for 5 seconds, and the penetration depth is a value obtained by multiplying the penetration distance (mm) by 10 times. JIS K-2235 It is a value measured according to -5.4 (1991).

Polyethylene wax having a melting point of 83 to 120 ° C. and a penetration of 10 to 40 at 25 ° C. includes LASHWAX-P (deodorized product) (manufactured by Nippon Natural Products), Mitsui High Wax 110P, 220P (manufactured by Mitsui Chemicals). ) Etc. can be used.
Since polyethylene wax has a high melting point and is hard (for example, component (B) described later), it has been conventionally used for shape retention. On the other hand, the polyethylene wax of component (A) used in the present invention has a high melting point and a characteristic that the penetration is large and soft.

  Component (A) can be used alone or in combination of two or more, and when applied to the lips or applicator, it collapses smoothly, has excellent adhesion to the lips and applicator, and exudes oil when stored at high temperatures. The content is 0.2% by mass or more, preferably 0.5% by mass or more, more preferably 1% by mass or more, and more preferably 30% by mass or less from the viewpoint of suppressing hardness and excellent hardness retention. Yes, 15 mass% or less is preferable, and 12 mass% or less is more preferable. Moreover, content of a component (A) is 0.2-30 mass% in the whole composition, 0.5-15 mass% is preferable, and 1-12 mass% is more preferable.

The polyethylene wax of component (B) used in the present invention has a melting point of 83 to 135 ° C., preferably 83 to 130 ° C., preferably 83 to 125, from the viewpoint of excellent oil seepage suppression and hardness retention during high temperature storage. ° C is more preferred.
For the same reason, the molecular weight of component (B) is preferably 450 to 3000, more preferably 500 to 2500, and still more preferably 500 to 2000.

  In addition, the component (B) has a penetration of 0.1 to 5 at 25 ° C., preferably from 0.1 to 2, preferably from 0.1 to 5 because it has excellent adhesion and a smooth feeling to use. 1-1 is more preferable.

  Polyethylene wax having a melting point of 83 to 135 ° C. and a penetration of 0.1 to 2 at 25 ° C. includes PERFORMALENE PL POLYETHLENE, PERFORMALENE 655 (NEW PHASE TECHNOLOGIES), LIPWAX A-4 (manufactured by Nippon Natural Products) ) Etc. can be used.

  Component (B) can be used singly or in combination of two or more, and the content is 0.1% by mass in the total composition from the viewpoint of suppressing oil seepage during high-temperature storage and being excellent in hardness retention. The above is preferable, 0.3% by mass or more is more preferable, 0.5% by mass or more is further preferable, 6% by mass or less is preferable, 5% by mass or less is more preferable, and 4% by mass or less is more preferable. Moreover, 0.1-6 mass% is preferable in the whole composition, as for content of a component (B), 0.3-5 mass% is more preferable, 0.5-4 mass% is still more preferable.

  In the present invention, the mass ratio (A) / (B) of the components (A) and (B) collapses smoothly when applied to the lips and applicator, and is excellent in adhesion to the lips and applicator. The feel when the lips are rubbed together is also good. Moreover, 0.05 or more is preferable, 0.1 or more is more preferable, and 0.25 or more is preferable from the viewpoint that the appearance stability at high temperature is excellent and the hardness is stably maintained even when the storage temperature is changed. The above is more preferable, 100 or less is preferable, 50 or less is more preferable, and 24 or less is more preferable. Moreover, 0.05-100 are preferable, as for the mass ratio (A) / (B) of a component (A) and (B), 0.1-50 are more preferable, and 0.25-24 are still more preferable.

  The lip cosmetic of the present invention can contain a solid wax at 25 ° C. other than the components (A) and (B). Examples of the wax include hydrocarbon waxes such as ozokerite, ceresin, paraffin, petrolatum, Fischer-Tropsch wax, microcrystalline wax; carnauba wax, candelilla wax, rice wax, sunflower wax, hydrogenated jojoba oil, wood wax Plant waxes such as beeswax; animal waxes such as beeswax and whale wax; synthetic waxes such as silicone wax, fluorine wax, polyethylene wax and synthetic beeswax; fatty acids, higher alcohols and derivatives thereof.

  In the present invention, the total content of the components (A) and (B) is excellent in appearance stability at high temperature, and even when the storage temperature is changed, the hardness is stably maintained. It is preferably 20% by mass or more, more preferably 25% by mass or more, still more preferably 30% by mass or more, preferably 75% by mass or less, more preferably 70% by mass or less, and 65% by mass in the total solid wax. % Or less is more preferable. The total content of components (A) and (B) is preferably 20 to 75% by mass in the total wax solid at 25 ° C., more preferably 25 to 70% by mass, and further 30 to 65% by mass. preferable.

  The hydrogenated polyisobutene of component (C) used in the present invention has an average molecular weight of 800 or more, preferably 900 or more, from the viewpoint of improving adhesion, providing gloss at the time of application, and imparting moisture. 1000 or more is more preferable. Moreover, the average molecular weight is preferably 5000 or less, and more preferably 3000 or less, from the viewpoint of obtaining a preferable feeling of use without excessive stickiness.

  Component (C) can be used alone or in combination of two or more. From the point of imparting gloss when applied, the point of imparting moisture, and obtaining a good feeling without stickiness, the content is in the total composition. 0.5 mass% or more is preferable, 1 mass% or more is more preferable, 2 mass% or more is further more preferable, 50 mass% or less is preferable, 40 mass% or less is more preferable, and 35 mass% or less is still more preferable. Moreover, 0.5-50 mass% is preferable in the whole composition, as for content of a component (C), 1-40 mass% is more preferable, and 2-35 mass% is still more preferable.

  In the present invention, the mass ratio (A) / (C) of the components (A) and (C) collapses smoothly when applied to the lips and applicator, and is excellent in adhesion to the lips and applicator. Is preferably 0.01 or more, more preferably 0.02 or more, still more preferably 0.03 or more, preferably 30 or less, more preferably 15 or less, from the viewpoint that the feel when the lips are rubbed is also good. 2 or less is more preferable. Moreover, 0.01-30 are preferable, as for mass ratio (A) / (C) of component (A) and (C), 0.02-15 are more preferable, and 0.03-2 are still more preferable.

The lip cosmetic of the present invention further comprises (D) a cellulose skeleton in the main chain, and 67 mol% or more of the total hydroxyl groups are a group —O—M—R (M represents CH ₂ or a carbonyl group C═O, R can contain a cellulose derivative substituted with a linear or branched alkyl group or alkenyl group having 10 to 24 carbon atoms, and the coating color can be further sustained.

Such a cellulose derivative is not particularly limited as long as it has a cellulose skeleton in the main chain, but as a raw material cellulose derivative, in addition to cellulose, short-chain acylated cellulose such as acetylcellulose, acetylbutylcellulose, hydroxyalkyl group, A cellulose modified with a glyceryl ether group or a (mono) alkyl glyceryl ether group is preferred. More specifically, hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxypropylmethyl cellulose, glyceryl cellulose, methyl glyceryl cellulose and the like can be mentioned.
Furthermore, as a raw material cellulose derivative, what has the following structural units is preferable.

(In the formula, R represents a linear or branched alkylene group having 2 to 8 carbon atoms, and n represents a number in which the average added mole number of RO 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, and more preferably an ethylene group or a propylene group. Moreover, as n, the number from which the average addition mole number of RO per glucose unit will be 0.3-5 is preferable, the number which becomes 0.5-4.5 is more preferable, and the number which becomes 1-4 is still more preferable .

Preferred examples of the raw material cellulose derivative include hydroxyethyl cellulose and hydroxypropyl cellulose, and hydroxypropyl cellulose is 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 even more preferably 500,000 to 2,000,000 from the viewpoint of solubility in oil and feel. .

In the group —O—M—R, which is a hydroxyl group substituent of the raw material cellulose derivative, M represents CH ₂ or a carbonyl group C═O, and R represents a linear or branched alkyl group or alkenyl having 3 to 40 carbon atoms. It is a group.
(I) As a linear alkyl group, butyl group, pentyl group, hexyl group, heptyl group, octyl group, nonyl group, decyl group, undecyl group, dodecyl group, tridecyl group, tetradecyl group, pentadecyl group, hexadecyl group, Heptadecyl group, octadecyl group, nonadecyl group, icosyl group, heicosyl group, docosyl group, tricosyl group, tetracosyl group, pentacosyl group, hexacosyl group, heptacosyl group, octacosyl group, nonacosyl group, triacontyl group, hentriacontyl group, dotriacontyl group, Examples include tritriacontyl group, tetratriacontyl group, pentatriacontyl group, hexatriacontyl group, heptatriacontyl group, octatriacontyl group, nonatriacontyl group, tetracontyl group and the like.

(Ii) Examples of branched alkyl groups include methylpentyl, methylhexyl, methylheptyl, methyloctyl, methylnonyl, methylundecyl, methylheptadecyl, ethylhexadecyl, methyloctadecyl, propyl Pentadecyl group, 2-hexyldecyl group, 2-octyldodecyl, 2-heptylundecyl group, 2-decyltetradecyl group, 2-dodecylhexadecyl group, 2-tetradecyloctadecyl group, 2-octadecylbehenyl group, etc. Can be mentioned.

(Iii) Examples of linear alkenyl groups include dodecenyl, tridecenyl, tetradecenyl, pentadecenyl, hexadecenyl, heptadecenyl, octadecenyl, nonadecenyl, icocenyl, henicocenyl, dococenyl, tricocenyl, tetracocenyl, pentacocenyl, hexacocenyl, heptacocenyl, octacocenyl, etc.
(Iv) Examples of branched alkenyl groups include isotridecenyl, isooctadecenyl, isotriacontenyl, 2-butyloctenyl, 2-hexyldecenyl, 2-octyldodecenyl, 2-decyltetradecenyl, 2- And dodecyl hexadecenyl.

  Among these, a linear alkyl group is preferable from the viewpoint of imparting smoothness during coating. Furthermore, from the easiness of extending | stretching and the adhesiveness, C9-21 is preferable, C11-11 is more preferable, and 16 is still more preferable.

  The hydroxyl group-O-M-R substitution rate is 67 mol% or more, preferably 70 mol% or more, and more preferably 80 mol% or more and 100 mol%. The substitution rate of the group —O—M—R is preferably higher from the viewpoint of increasing the solubility in the oil, but is preferably 90 mol% or less from the viewpoint of moisture feeling and slipperiness. Moreover, it is preferable that the hydroxyl group remains appropriately in terms of no roughness. The preferred hydroxyl group content is 2 to 33 mol%, more preferably 5 to 20 mol%.

The weight-average molecular weight of the component (D) cellulose derivative is preferably 100,000 or more, more preferably 200,000 or more, and preferably 4 million or less, more preferably 3 million or less. 500,000 to 2,000,000 are preferable from the viewpoint that the solubility and the smooth feel are maintained.
In addition, a weight average molecular weight (Mw) is calculated | required by the gel permeation chromatography (The calibration curve defined using chloroform solvent and the linear polystyrene as a standard, and a parallax refractive index detector) measurement.

Such a cellulose derivative is obtained by reacting a raw material cellulose derivative with an acid halide having a linear or branched alkyl group or alkenyl group having 4 to 40 carbon atoms to replace 67 mol% or more of the total hydroxyl groups of the raw material cellulose derivative. It is manufactured by doing.
A compound in which M is CH ₂ can be produced by reacting a cellulose derivative with a corresponding sulfonic acid ester such as alkyl halide or alkyl mesylate in the presence of a base. The main chain comprising a cellulose skeleton can also be obtained by transesterification (acidolysis) of acetylcellulose. According to this method, a cellulose ester derivative having a very 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 behenic acid ester; hydroxypropyl cellulose lauric acid ester, hydroxypropyl cellulose myristic acid ester, hydroxy Propylcellulose palmitate, hydroxypropylcellulose stearate, hydroxypropylcellulose behenate; hydroxyethylmethylcellulose laurate, hydroxyethylmethylcellulose myristic ester, hydroxyethylmethylcellulose palmitate, hydroxyethyl Cylcellulose stearate, hydroxyethylmethylcellulose behenate; hydroxypropylmethylcellulose laurate, hydroxypropylmethylcellulose myristic acid, hydroxypropylmethylcellulose palmitate, hydroxypropylmethylcellulose stearate, hydroxypropylmethylcellulose behenate It is done. Of these, hydroxypropylcellulose laurate, hydroxypropylcellulose myristic ester, hydroxypropylcellulose palmitate, hydroxypropylcellulose stearate, and hydroxypropylcellulose behenate are preferred, and hydroxypropylcellulose palmitate is more preferred.

  The cellulose derivative of component (D) can be used singly or in combination of two or more. From the viewpoint of obtaining a good feeling of use and improving the durability of the coating film, the content is 0. 1 mass% or more is preferable, 0.2 mass% or more is more preferable, 0.3 mass% or more is further more preferable, 10 mass% or less is preferable, 7 mass% or less is more preferable, and 5 mass% or less is still more preferable. Moreover, 0.1-10 mass% is preferable in the whole composition, content of a component (D) has more preferable 0.2-7 mass%, and 0.3-5 mass% is still more preferable.

  The lip cosmetic of the present invention further comprises (E) the following general formula (1):

Wherein R ¹ and R ⁹ are each independently the same or different and the mode number of carbon atoms is a straight or branched hydrocarbon group having ⁸ to 32 carbon atoms; R ^{2 to} R ⁸ are , Each independently having the same or different hydrocarbon group having 1 to 5 carbon atoms, which is linear or branched; Q is a divalent hydrocarbon group having 3 to 20 carbon atoms which is linear or branched; R ¹⁰ and R ¹¹ are each independently a hydrogen atom or a straight or branched hydrocarbon group having 1 to 28 carbon atoms, at least one is a hydrogen atom; p represents the number of repeating units, and an average value of 5 or more and 50 or less Q represents the number of repeating units, the average value is 2.5 or more and 10 or less; the constituent units of repeating numbers p and q may be either a block copolymer or a random copolymer)
The lip cosmetic can be gelled, the adhesion of the coloring material to the lips can be increased, and the coating color can be further sustained.
This modified polysiloxane is modified by replacing both ends with a hydrocarbon group such as an alkyl group, and the side chain is modified with an alkyl glyceryl ether group in a graft form.

In the general formula (1), R ¹ and R ⁹ each independently represent a straight or branched hydrocarbon group having a mode number of 8 to 32 carbon atoms, preferably a mode number of 12 carbon atoms. It is -28, More preferably, it is 16-18. Here, the mode value of the carbon number refers to the carbon number of the hydrocarbon group that is contained most in the chain length of the hydrocarbon group having a distribution, and is an oil agent that is generally used for makeup cosmetics such as lipsticks. It is an important factor that influences the compatibility with and the appearance of makeup persistence. When the mode value of the carbon number is 8 or more, good compatibility with the oil agent is obtained, and when it is 32 or less, the sustained performance of the cosmetic finish is maintained.

In the general formula (1), R ^{2 to} R ⁸ each independently represent a straight or branched hydrocarbon group having 1 to 5 carbon atoms, and may be the same or different. By using a hydrocarbon group having a carbon number within this range, it is possible to maintain the sustained performance of the cosmetic finish. Specifically, a linear alkyl group such as a methyl group, an ethyl group, an n-propyl group, an n-butyl group, or a pentyl group; a branched alkyl group such as an isopropyl group, a sec-butyl group, a tert-butyl group, or a neopentyl group Etc. Among these, a methyl group is preferable from the viewpoint of availability.

Moreover, in the said General formula (1), Q shows a C3-C20 linear or branched bivalent hydrocarbon group. When the number of carbon atoms is 3 or more, pigment dispersion is not hindered, and when the number of carbon atoms is 20 or less, the durability of the cosmetic finish is maintained.
Examples of the divalent hydrocarbon group having 3 to 20 carbon atoms represented by Q include trimethylene group, tetramethylene group, pentamethylene group, hexamethylene group, heptamethylene group, octamethylene group, nonamethylene group, decamethylene group, undecameric group. A linear alkylene group such as a methylene group, a dodecamethylene group, a tridecamethylene group, a tetradecamethylene group, a hexadecamethylene group, an octadecamethylene group; a propylene group, a 2-methyltetramethylene group, a 2-methylpentamethylene group, Examples include branched chain alkylene groups such as 3-methylpentamethylene group and 2-ethyloctamethylene group. Among these, a nonamethylene group, a decamethylene group, an undecamethylene group, a dodecamethylene group, and a tridecamethylene group are preferable from the viewpoint of maximizing makeup persistence.

Next, R ¹⁰ and R ¹¹ are each independently a hydrogen atom or a straight or branched hydrocarbon group having 1 to 28 carbon atoms, at least one of which is a hydrogen atom. This combination maintains the durability of the makeup finish. Examples of the straight-chain or branched hydrocarbon group having 1 to 28 carbon atoms include methyl group, ethyl group, propyl group, butyl group, pentyl group, hexyl group, octyl group, decyl group, dodecyl group, tetradecyl group, hexadecyl group , Octadecyl group, eicosyl group, doeicosyl group, tetraeicosyl group, hexaeicosyl group, octaeicosyl group, etc. linear alkyl group; isopropyl group, sec-butyl group, tert-butyl group, neopentyl group, 1-ethyl Examples thereof include branched alkyl groups such as propyl group and 1-heptyldecyl group. Of these, R ¹⁰ and R ¹¹ are preferably hydrogen atoms from the standpoint of makeup persistence.

In General formula (1), p shows the number of repeating units, shows the number of 5-50 by an average value, Preferably it is the number of 20-30. When the value of p is 5 or more, pigment dispersion is not inhibited, and when it is 50 or less, compatibility with oils generally used in lip cosmetics such as lipsticks is ensured. Here, the average value of p is calculated from the intensity ratio of the peaks attributed to R ⁴ and R ⁵ by ¹ H-NMR, based on the terminal methyl groups of the hydrocarbon groups introduced at both ends of the polysiloxane. .
Moreover, q represents the number of repeating units, shows an average value of 2.5 to 10, and preferably 3.0 to 6.0. When the value of q is 2.5 or more, the durability of the cosmetic finish is maintained, and when it is 10 or less, pigment dispersion is not hindered. Here, the average value of q is attributed to methine and methylene hydrogen to which OR ¹⁰ and OR ¹¹ are added, based on the terminal methyl groups of the hydrocarbon groups introduced at both ends of the polysiloxane, by ¹ H-NMR. Calculated from the peak intensity ratio.
The constituent units of the repeating numbers p and q may be either a block copolymer or a random copolymer, but a random copolymer that does not further inhibit the dispersion of the pigment is preferable. Further, p is preferably larger than q.

The modified polysiloxane represented by the above general formula (1) is prepared from an organohydrogenpolysiloxane having at least one silicon-hydrogen bond according to a method described in JP-A-4-134014, and a corresponding alkenyl glyceryl ether. Can be produced by hydrosilylation reaction.
Examples of the catalyst used for hydrosilylation include metal complex compounds such as ruthenium, rhodium, osmium, iridium, and platinum, and those in which these are supported on silica gel, alumina, or carbon. Of these, chloroplatinic acid, Spiers catalyst (2-propanol solution of chloroplatinic acid) and the like are preferable.
The amount of the catalyst used is preferably in the range of 10 ⁻⁶ to 10 ⁻¹ mol with respect to ¹ mol of olefin. In this reaction, a reaction solvent may or may not be used. The reaction solvent is not particularly limited as long as it does not inhibit the reaction. For example, hydrocarbon solvents such as pentane, hexane and cyclohexane; aromatic solvents such as benzene, toluene and xylene; ether systems such as diethyl ether and diisopropyl ether Solvents: Alcohol solvents such as methanol, ethanol, 2-propanol, butanol; cyclic silicone solvents such as octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, and the like. When an alcohol solvent is used, a pH adjuster such as potassium acetate (see JP-A-57-149290) is used in order to prevent or suppress dehydration reaction between the silicon-hydrogen bond and the hydroxyl group. Is preferred. Although this reaction proceeds at 0 to 200 ° C., it is preferably performed at 0 to 100 ° C. in consideration of the reaction rate and coloring of the product. The reaction time is preferably about 0.5 to 24 hours.

  Used in the synthesis of the modified polysiloxane represented by the above general formula (1), the silicone chain has an alkyl group different from other alkyl groups in both ends of the silicone chain, and a silicon-hydrogen bond in the silicone chain An organohydrogenpolysiloxane having a diolefin compound produced according to the method described in Japanese Patent No. 3032420 or a terminal olefin compound in a 1,1,3,3-tetraalkyl-1,3-dihydrodisiloxane Thus, the disiloxane compound added by hydrosilylation can be produced by equilibration polymerization with cyclic dimethyltetrasiloxane, cyclic methylhydrotetrasiloxane or the like in the presence of an acid catalyst or a base catalyst.

The component (E) is preferably a double-end alkyl (C16-18) modified dimethylsiloxane methyl (undecylglyceryl ether) siloxane copolymer.
The modified polysiloxane represented by the general formula (1) is a single type of structure or a mixture of two or more types, and shows an average structure thereof.

  Component (E) can be used singly or in combination of two or more, and the content is preferably 0.1% by mass or more, 0.5% by mass in the total composition from the viewpoint of improving the adhesion of the coating film. % Or more, more preferably 1% by mass or more, more preferably 15% by mass or less, more preferably 10% by mass or less, and still more preferably 8% by mass or less. Moreover, 0.1-15 mass% is preferable in the whole composition, as for content of a component (E), 0.5-10 mass% is more preferable, and 1-8 mass% is still more preferable.

  The lip cosmetic of the present invention preferably contains silicic acid anhydride in order to finely and stably disperse the modified polysiloxane of component (E) in the composition. In that case, the mass ratio of the modified polysiloxane of component (E) to silicic anhydride is preferably 40: 1 to 1: 1, and more preferably 25: 1 to 5: 1.

The average particle size of silicic anhydride is preferably 5 to 50 nm, more preferably 10 to 20 nm. By using such silicic anhydride, dispersibility is improved and a good feeling of use is obtained.
The silicic anhydride is preferably silicic anhydride obtained by a thermal decomposition method. Commercial products such as Aerosil OX50, Aerosil 90G, Aerosil 130, Aerosil 200, Aerosil 300 (above, Nippon Aerosil Co., Ltd.) can be used.

  The lip cosmetic of the present invention can further contain a liquid or pasty oil at 25 ° C. other than the component (C). Such oils are fluid at 25 ° C., for example, hydrocarbon oils such as petrolatum, squalane, liquid paraffin, liquid isoparaffin, polybutene, hydrogenated polyisobutene, hydrogenated polydecene; octyldodecyl myristate, isotridecyl isononanoate , Isopropyl isostearate, neopentyl glycol dicaprate, glyceryl diisostearate, glyceryl triisostearate, diisostearyl malate, jojoba oil, octyldodecanol, N-lauroyl-L-glutamate di (phytosteryl / 2-octyldodecyl), etc. Ester oils; Silicone oils such as dimethylpolysiloxane and phenylmethylpolysiloxane; Lanolin, dimer acid ester, dimer diol derivative, cholesterol fatty acid ester, phyto Terol fatty acid esters, polyglycerol fatty acid esters, pentaerythritol fatty acid esters, and the like. Among them, isotridecyl isononanoate, diisostearyl malate, octyldodecanol, N-lauroyl-L-glutamate di (phytosteryl / 2-octyldodecyl), jojoba oil, neopentyl glycol dicaprate, and octyldodecyl myristate are preferable.

  These oil agents can use 1 type (s) or 2 or more types, Content is 20 mass% or more in the whole composition, 35 mass% or more is more preferable, 85 mass% or less is preferable, 80 mass% is preferable. The following is more preferable. Moreover, it is preferable to contain 20-85 mass% in the whole composition, and it is more preferable to contain 35-80 mass%.

The lip cosmetic of the present invention can further contain a powder. Such powder is not limited as long as it is used in ordinary cosmetics, and extender pigments, colored pigments, pearl pigments and the like can be used.
Examples of extender pigments include silicic acid, anhydrous silicic acid, magnesium silicate, talc, sericite, mica, kaolin, clay, bentonite, bismuth oxychloride, zirconium oxide, magnesium oxide, aluminum oxide, calcium sulfate, barium sulfate, Examples thereof include inorganic pigments such as magnesium sulfate, calcium carbonate, and magnesium carbonate, and composite powders thereof.

  Examples of the color pigment include titanium oxide, zinc oxide, yellow iron oxide, red iron oxide, black iron oxide, bitumen, ultramarine, chromium oxide, chromium hydroxide and other metal oxides, manganese violet, cobalt titanate and other metal complexes, Furthermore, inorganic pigments such as carbon black, organic pigments such as tar dyes and lake pigments, and natural dyes such as carmine can be used.

Examples of the pearl pigment include mica, synthetic phlogopite, and glass coated with a colorant such as titanium oxide, iron oxide, silicon oxide, bitumen, chromium oxide, carmine, and organic pigment.
As these powders, those subjected to various surface treatments such as water repellency treatment, water repellency / oil repellency treatment, and the like can also be used.

  These powders can be used singly or in combination of two or more, and they give the appearance of cosmetics and a glittering pearl-like shine to the cosmetic film on the skin after application, and an attractive production From the point which carries out, it is preferable to contain 0.1-50 mass% in the whole composition, 0.2-30 mass% is more preferable, and it is further more preferable that 0.5-20 mass% is contained.

  The lip cosmetic of the present invention is a component used in ordinary cosmetics, such as surfactants, lower alcohols, polyhydric alcohols, polymer compounds, ultraviolet rays, as long as the effects of the present invention are not impaired. Absorbers, antioxidants, fragrances, preservatives, humectants, thickeners, water, and the like can be included.

The lip cosmetic of the present invention is measured by the following method, the penetration hardness (L1) of the cosmetic before storage, and the cosmetic is stored in a cycle of 0 ° C. to 40 ° C. (1 cycle / day) for 2 weeks. The retention rate ((L2) / (L1)) × 100 (%) obtained from the penetration hardness after the treatment is preferably 70% or more from the viewpoint of storage stability, and 75% or more. More preferred.
(Measuring method)
The bulk of the lip cosmetic is heated to 95 ° C., poured into an aluminum cell having a diameter of 25 mmφ and a height of 9 mm, and cooled and solidified at 20 ° C.
After holding this bulk at 30 ° C. for 2 hours, using a rheometer, measure the penetration hardness with a jig with a diameter of 2 mmΦ at 30 ° C., the table speed is 2 mm / s, and the jig is needled to a depth of 2 mm. The maximum value when entering is taken as the penetration hardness (L1) before storage.
The bulk is then stored in a 0 ° C. to 40 ° C. cycle (1 cycle / day) for 2 weeks.
After storing the bulk after storage at 30 ° C. for 2 hours, the penetration hardness is measured with a jig having a diameter of 2 mmΦ at 30 ° C. using a rheometer, the table speed is 2 mm / s, and the depth of the jig is The maximum value when the needle penetrates to 2 mm is taken as the penetration hardness after storage (L2).

The lip cosmetic of the present invention can be produced by mixing components including components (A), (B) and (C).
In this invention, lip cosmetics are manufactured with the manufacturing method provided with the process of mixing the component containing component (A), (B) and (C). In particular, the raw materials containing components (A), (B), and (C) are mixed and dissolved at a temperature equal to or higher than the melting point of component (A) or (B), and then cooled to a temperature lower than the melting point. It is preferable to produce a lip cosmetic. Specifically, the components (A), (B), (C), and other base materials (other than the color material) are heated and dissolved at 83-120 ° C. for 5 minutes-3 hours, and then mixed uniformly. The lip cosmetic can be produced by adding the raw material and further uniformly mixing for 1 minute to 2 hours, cooling and solidifying.

The lip cosmetic of the present invention can be applied as a solid, stick, liquid or the like. Moreover, it can be set as a lipstick, lip balm, lip gloss, lip liner, etc.
This invention discloses the following compositions further regarding embodiment mentioned above.

<1> The following components (A), (B) and (C):
(A) 0.2 to 30% by mass of polyethylene wax having a melting point of 83 to 120 ° C. and a penetration of 10 to 40 at 25 ° C.
(B) polyethylene wax having a melting point of 83 to 135 ° C. and a penetration of 0.1 to 5 at 25 ° C.,
(C) Lip cosmetic containing hydrogenated polyisobutene having an average molecular weight of 800 or more.

The content of <2> component (A) is 0.2 to 30% by mass in the total composition, preferably 0.5 to 15% by mass, and more preferably 1 to 12% by mass. Lip cosmetics.
<3> The content of component (B) is 0.1 to 6% by mass, preferably 0.3 to 5% by mass, and more preferably 0.5 to 4% by mass <1> or <2 > Lip cosmetics as described.
<4> The content of the component (C) is 0.5 to 50% by mass, preferably 1 to 40% by mass, and more preferably 2 to 35% by mass. The lip cosmetic according to 1.

<5> The mass ratio (A) / (B) of the components (A) and (B) is 0.05 to 100, preferably 0.1 to 50, and more preferably 0.25 to 24 < Lip cosmetics according to any one of 1> to <4>.
<6> The total content of the components (A) and (B) is 20% by mass or more in the total solid wax, preferably 25% by mass or more, and more preferably 30% by mass or more <1> to < Lip cosmetics according to any one of 5>.
<7> The mass ratio (A) / (C) of the components (A) and (C) is 0.01 to 30, preferably 0.02 to 15, and more preferably 0.03 to <2. Lip cosmetics according to any one of 1> to <6>.

<8> Furthermore, (D) having a cellulose skeleton in the main chain, 67 mol% or more of the total hydroxyl groups are a group —O—M—R (M is CH ₂ or a carbonyl group C═O, and R is a carbon number of 10 The lip cosmetic according to any one of the above <1> to <7>, comprising a cellulose derivative substituted with ˜24 linear or branched alkyl or alkenyl groups.
<9> The content of component (D) is 0.1 to 10% by mass in the total composition, preferably 0.2 to 7% by mass, and more preferably 0.3 to 5% by mass <8 > Lip cosmetics as described.
<10> Further, (E) the following general formula (1)

Wherein R ¹ and R ⁹ are each independently the same or different and the mode number of carbon atoms is a straight or branched hydrocarbon group having ⁸ to 32 carbon atoms; R ^{2 to} R ⁸ are , Each independently having the same or different hydrocarbon group having 1 to 5 carbon atoms, which is linear or branched; Q is a divalent hydrocarbon group having 3 to 20 carbon atoms which is linear or branched; R ¹⁰ and R ¹¹ are each independently a hydrogen atom or a straight or branched hydrocarbon group having 1 to 28 carbon atoms, at least one is a hydrogen atom; p represents the number of repeating units, and an average value of 5 or more and 50 or less Q represents the number of repeating units, the average value is 2.5 or more and 10 or less; the constituent units of repeating numbers p and q may be either a block copolymer or a random copolymer)
The lip cosmetic according to any one of <1> to <9>, which contains a modified polysiloxane represented by the formula:

<10> Description of <10>, wherein the content of <10> component (E) is 0.1 to 15% by mass in the total composition, preferably 0.5 to 10% by mass, and more preferably 1 to 8% by mass. Lip cosmetics.
<11> Further, silicic acid is contained, and the mass ratio of the modified polysiloxane of component (E) to silicic acid anhydride is 40: 1 to 1: 1, and 25: 1 to 5: 1 is more preferable. The lip cosmetic according to <9> or <10>.

<12> The penetration hardness (L1) of the cosmetic before storage, measured by the following method, and the penetration after storing the cosmetic in a cycle of 0 ° C. to 40 ° C. (1 cycle / day) for 2 weeks Any one of the above <1> to <11>, wherein the retention rate ((L2) / (L1)) × 100 (%) obtained from the hardness (L2) is preferably 70% or more, and more preferably 75% or more. Lip cosmetics.
(Measuring method)
The bulk of the lip cosmetic is heated to 95 ° C., poured into an aluminum cell having a diameter of 25 mmφ and a height of 9 mm, and cooled and solidified at 20 ° C.
After holding this bulk at 30 ° C. for 2 hours, using a rheometer, measure the penetration hardness with a jig with a diameter of 2 mmΦ at 30 ° C., the table speed is 2 mm / s, and the jig is needled to a depth of 2 mm. The maximum value when entering is taken as the penetration hardness (L1) before storage.
The bulk is then stored in a 0 ° C. to 40 ° C. cycle (1 cycle / day) for 2 weeks.
After storing the bulk after storage at 30 ° C. for 2 hours, the penetration hardness is measured with a jig having a diameter of 2 mmΦ at 30 ° C. using a rheometer, the table speed is 2 mm / s, and the depth of the jig is The maximum value when the needle penetrates to 2 mm is taken as the penetration hardness after storage (L2).
<13> The lip cosmetic according to any one of <1> to <12>, obtained by mixing components including components (A), (B), and (C).
<14> The method for producing a lip cosmetic according to any one of <1> to <13>, comprising a step of mixing components including components (A), (B) and (C).

Production Example 1 (Production of hydroxypropylcellulose palmitate)
At room temperature in chloroform under nitrogen, 5 g (8.3 × 10 ⁻⁶ mol) of hydroxypropylcellulose (Selney M; manufactured by Nippon Soda Co., Ltd.) was added to 50 mL of pyridine and 0.17 g (0.001 mol) of DMAP (dimethylamino). Pyridine) was added and dissolved. 27.9 g (0.101 mol) of palmitoyl chloride was added dropwise over 0.5 hours. Thereafter, the mixture was reacted at 50 ° C. for 15 hours, precipitated in methanol, purified, and dried to obtain hydroxypropylcellulose palmitic acid ester (weight average molecular weight 870,000, average acyl substitution degree was 85 mol% of all hydroxyl groups). .
The weight average molecular weight and the average acyl substitution degree were measured by the following methods.

(Measurement of weight 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 was Hitachi L-6000, the detector was a Shodex RI SE-61 differential refractive index detector, and the column was a GMHHR-H double connected. The sample was adjusted to a concentration of 0.5 g / 100 mL with an eluent, and 20 μL was used. The eluent used was a 1 mmol / L dimethyldodecylamine chloroform solution. The column temperature was 40 ° C. and the flow rate was 1.0 mL / min.

(Measurement of average acyl (ester) substitution degree)
About 0.5 g of the cellulose derivative was precisely weighed, 4 mL of 5N sodium hydroxide and 25 mL of ethanol were added, and the mixture was refluxed at about 90 ° C. for 5 hours to completely hydrolyze the ester. After adding 30 g of water and refluxing at about 90 ° C. for 5 hours, it was neutralized with phosphoric acid, and it was confirmed with pH test paper that it was completely neutralized. After adding 70 g of tetrahydrofuran and stirring for 30 minutes and allowing to stand at room temperature for 3 hours, the amount of fatty acid was measured for the supernatant using Hitachi L-7000 high performance liquid chromatography. The detector used was Hitachi L-7400 (UV measurement) and measured at a wavelength of 210 nm, and THF: water: phosphoric acid = 60: 39: 1 was used as the eluent.

Production Example 2 (Production of dimethylsiloxane methyl (undecylglyceryl ether) siloxane copolymer)
(1) STEP-1 (synthesis of tetramethyldisiloxane having an alkyl group different from other alkyl groups in the silicone chain at both ends of the silicone chain):
1,4,8 g of 1,1,3,3-tetramethyldisiloxane and 1.0 g of Spiers catalyst (2-propanol solution of 2 mass% chloroplatinic acid) were added to a three-necked flask and heated to 70 ° C. At 70 ° C. under a nitrogen atmosphere, 174.2 g of α-olefin (“Dialene 168” manufactured by Mitsubishi Chemical Corporation, 1/1 (mass ratio) mixture of carbon numbers 16 and 18)) was added dropwise, followed by stirring for 2 hours. It was. After cooling, the reaction system was neutralized with an aqueous sodium hydroxide solution, and purified by distillation under reduced pressure. From the ¹ H-NMR spectrum (400 MHz) of the obtained product, the obtained product is a 1,1,3,3-tetramethyldisiloxane derivative having an alkyl group having 16 and 18 carbon atoms at both ends. (22.1 g, yield; 85%).

(2) STEP-2 (Synthesis of organohydrogenpolysiloxane having an alkyl group different from other alkyl groups in the silicone chain at both ends of the silicone chain and having a silicon-hydrogen bond in the silicone chain):
4,4.8 g of a 1,1,3,3-tetramethyldisiloxane derivative having an alkyl group having 16 and 18 carbon atoms at both ends synthesized in (1), 78.6 g of decamethylcyclopentasiloxane, 1,3 , 5,7-tetramethylcyclotetrasiloxane 19.8 g, n-heptane 50 g, and activated clay 5 g were added to a three-necked flask and refluxed for 12 hours. After cooling, distillation purification was performed under reduced pressure. From the ¹ H-NMR spectrum of the obtained product, the obtained product was a dimethylsiloxane / methylsiloxane copolymer (p = 23, q = 4) having 16 and 18 alkyl groups at both ends. ) (132.8 g, yield: 95%).

(3) STEP-3 (Synthesis of polysiloxane in which both ends are substituted with alkyl groups and the side chains are graft-modified with alkyl glyceryl ether groups):
50.0 g of a dimethylsiloxane / methylsiloxane copolymer having an alkyl group having 16 and 18 carbon atoms at both ends synthesized in (2), 61.0 g of 10-undecenyl glyceryl ether, 5% by mass platinum-supporting carbon 0.25 g of catalyst was added to a three-necked flask and stirred at 70 ° C. for 3 hours. After cooling, distillation purification was performed under reduced pressure. From the ¹ H-NMR spectrum of the obtained product, the obtained product was a dimethylsiloxane methyl (undecyl glyceryl ether) siloxane copolymer having an alkyl group having 16 and 18 carbon atoms at both ends (p = 23, q = 4) (63.0 g, yield; 95%).
The obtained copolymer is a random copolymer as follows in General formula (1).
R ¹ and R ⁹ = an alkyl group whose mode of carbon number is 18;
R ^{2 to} R ⁸ = methyl group,
Q = a linear alkylene group having 11 carbon atoms,
R ¹⁰ and R ¹¹ = hydrogen atom,
p (average value) = 23,
q (average value) = 4.0

Examples 1-7 and Comparative Examples 1-6
Stick lipsticks having the compositions shown in Table 1 were produced by the production method shown below. About the obtained lipstick, appearance stability at 50 ° C., penetration hardness stability at 0-40 ° C. cycle storage, ease of collapsing during application, ease of adhesion during application, and feel after 1 hour of application evaluated. The results are also shown in Table 1.

(Production method)
The base material (other than the color material) was dissolved by heating at 105 ° C. for 30 minutes and mixed uniformly with a disper. Next, the color material raw material was added, and the mixture was further mixed uniformly for 15 minutes, defoamed, poured into a mold, cooled and solidified, and a stick lipstick was obtained.

(Evaluation method)
(1) Appearance stability at 50 ° C .:
The appearance after storage at 50 ° C. for 2 weeks was observed with the naked eye, and 10 expert panelists evaluated whether the oil agent oozed out according to the following criteria. The result was shown as an integrated value of 10 people.
4: No oozing out of the oil is observed.
3; Slight exudation of oil is observed.
2; Slight exudation of oil is observed.
1; The oil agent oozes out.

(2) Penetration hardness stability during 0-40 ° C cycle storage:
The bulk of the lip cosmetic is heated to 95 ° C., poured into an aluminum cell having a diameter of 25 mmφ and a height of 9 mm, and cooled and solidified at 20 ° C.
After holding this bulk at 30 ° C. for 2 hours, using a rheometer manufactured by Rheotech, the penetration hardness is measured with a jig having a diameter of 2 mmΦ at 30 ° C., and the table speed is 2 mm / s and the jig is deep. The maximum value when the needle penetrates to 2 mm is taken as the penetration hardness (L1) before storage.
The bulk is then stored in a 0 ° C. to 40 ° C. cycle (1 cycle / day) for 2 weeks.
After maintaining the bulk after storage for 2 hours at 30 ° C., the penetration hardness is measured with a jig with a diameter of 2 mmΦ at 30 ° C. using a rheometer manufactured by Rheotech, and the table speed is 2 mm / s. The maximum value when the jig penetrates to a depth of 2 mm is taken as the penetration hardness (L2) after storage.
From the penetration hardness before storage (L1) and the penetration hardness after storage (L2), the retention is determined from ((L2) / (L1)) × 100 (%). Table 1 shows the retention rate.

(3) Ease of collapse during application:
Ten specialist panelists evaluated the ease of collapse when each stick lipstick was applied to the lips according to the following criteria. The result was shown as an integrated value of 10 people.
4; Collapse is good.
3; Slightly collapsed.
2;
1; Hard to collapse.

(4) Ease of adhesion during application:
Ten professional panelists evaluated the ease with which lipsticks collapsed by the application action on the lips by the following criteria. The result was shown as an integrated value of 10 people.
4; Easy to adhere.
3;
2; Not easy to adhere.
1; Hard to adhere.

(5) Touch after 1 hour of application:
One hour after applying the lipstick, 10 expert panelists evaluated the feel (smoothness, non-stickiness) when the lips were rubbed together according to the following criteria. The result was shown as an integrated value of 10 people.
4; Feel good.
3; Slightly good feel.
2; Feels not very good.
1; feels bad.

  From the results in Table 1, all of the stick lipsticks of Examples 1 to 7 have an appearance stability at 50 ° C., a penetration hardness stability at 0-40 ° C. cycle storage, a tendency to collapse at the time of application, and at the time of application. Excellent adhesion and feel after 1 hour of application. On the other hand, Comparative Examples 1 to 3 which did not contain any one of the components (A) to (C) were inferior to the above effects. In addition, Comparative Example 4 containing ceresin having a penetration of 11 instead of Component (A), Comparative Example 5 containing carnauba wax having a penetration of 0.2 instead of Component (B), instead of Component (C) Even in Comparative Example 6 containing hydrogenated polyisobutene having an average molecular weight of 534, an excellent effect was not obtained.

Example 8
Liquid lipsticks having the composition shown in Table 2 were produced, and in the same manner as in Examples 1 to 7, appearance stability at 50 ° C., penetration hardness stability at 0-40 ° C. cycle storage, and feel after 1 hour of application. In addition, the ease of collapse of the agent (ease of adhesion to the chip) and the ease of attachment from the application tool (chip) were evaluated by pulling out the application tool (chip) during initial use. The results are also shown in Table 2.

(Production method)
The base material (other than the color material) was dissolved by heating at 105 ° C. for 30 minutes and mixed uniformly with a disper. Next, the color material raw material was added, and the mixture was further uniformly mixed for 15 minutes, defoamed, poured into a transparent dipping container, cooled and solidified, and a liquid lipstick was obtained.

(Evaluation method)
(6) Easiness of collapse of the agent by pulling out the application tool (chip) at the initial use (ease of adhesion to the chip):
Ten professional panelists evaluated the ease of lipstick collapse (easy adhesion to the chip) when the application tool was pulled out of the container according to the following criteria. The result was shown as an integrated value of 10 people.
4; easy to collapse (easy to adhere to the chip).
3: Slightly fragile (slightly attached to the chip).
2; Not easily broken (not easily attached to the chip).
1; Hard to collapse (hard to adhere to the chip).

(7) Ease of adhesion from the application tool (chip) during initial use:
Ten expert panelists evaluated the ease with which lipsticks collapsed by the action of pulling out the application tool (chip) on the lips according to the following criteria. The result was shown as an integrated value of 10 people.
4; Easy to adhere.
3;
2; Not easy to adhere.
1; Hard to adhere.

Claims (5)

The following components (A), (B) and (C):
(A) 0.2 to 30% by mass of polyethylene wax having a melting point of 83 to 120 ° C. and a penetration of 10 to 40 at 25 ° C. according to JIS K-2235-5.4 (1991)
(B) Polyethylene wax having a melting point of 83 to 135 ° C. and a penetration of 0.1 to 5 at 25 ° C. according to JIS K-2235-5.4 (1991).
(C) containing hydrogenated polyisobutene having an average molecular weight of 800 or more,
Lip cosmetics in which the mass ratio (A) / (B) of the components (A) and (B) is from 0.25 to 24.   The lip cosmetic according to claim 1, wherein the content of the component (B) is 0.1 to 6% by mass.   The lip cosmetic according to claim 1 or 2, wherein the content of the component (C) is 0.5 to 50% by mass.   The lip cosmetic according to any one of claims 1 to 3, wherein the total content of the components (A) and (B) is 20% by mass or more in the total wax solid at 25 ° C.   The lip cosmetic according to any one of claims 1 to 4, wherein the mass ratio (A) / (C) of the components (A) and (C) is 0.01 to 30.