JP2006265203A - Cosmetic - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cosmetic such as a lip cosmetic which gives excellent gloss and moisture-retaining effect, can easily and smoothly be coated and extended, is not sticky, and has a good aroma, an eye shadow cosmetic which has excellent gloss, moisture-retaining effect and makeup-lasting property, or a hair cosmetic which has excellent gloss, moisture-retaining effect and hair-dressing power. <P>SOLUTION: This cosmetic is characterized by compounding a specific alkylene oxide derivative having a mol.wt. of 1,000 to 5,000 and a pentaerythritol benzoate represented by the general formula (2) (R<SP>3</SP>and R<SP>4</SP>are each H, a 1 to 24C straight chain or branched fatty acid residue, or benzoic acid residue). <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to cosmetics, and in particular, to general cosmetics such as lip cosmetics, eye shadow cosmetics, and hair cosmetics with improved gloss and moisturizing effect.

Conventional cosmetics, especially ordinary lip cosmetics, are composed of various oils, waxes, coloring materials, moisturizers, etc., and as a characteristic at the time of use, they are easy to apply when applied to the lips. It has been demanded that there is no stickiness when touching the lips, that there is a certain degree of gloss on the lips, that there is a moist feeling, and that there is little odor.
In recent years, emphasis has been placed on the lip gloss and moisturizing effect, but polyisobutene and polybutene, which are well known as polishes, have poor compatibility with other oils and moisturizers. It had a drawback that it was difficult to achieve both the gloss on the lips and the moisturizing effect.

  On the other hand, as a method for improving the moisturizing effect, various studies have been made conventionally. For example, in Patent Document 1 below, an alkylene oxide derivative having a molecular weight of 1,000 to 5,000 is blended to provide a high moisturizing effect. A method of obtaining is disclosed. However, this alkylene oxide derivative has poor compatibility with non-polar oils such as the above-mentioned polyisobutene, and when used in combination, there are problems such as aggregation and separation of coloring materials.

JP 2004-168759 A

  Therefore, the present invention is excellent in compatibility even when blended in combination with the above-mentioned alkylene oxide derivative and has a high gloss imparting effect, and in the case of lip cosmetics, when applied to the lips, it spreads smoothly and is easy to apply. No odor, good odor, excellent lip gloss, excellent moisturizing effect, eye shadow cosmetics with gloss and moisturizing effect, good makeup, and hair cosmetics with gloss It aims to provide a cosmetic with excellent moisturizing effect and hair-styling ability.

  As a result of intensive studies in view of such a current situation, the present inventors, as a result of combining an alkylene oxide derivative having a high moisturizing effect, with a specific pentaerythritol and an ester of benzoic acid, for example, lip cosmetics In such a case, the inventors have found a new finding that both gloss on the lips and a high moisturizing effect can be achieved, and the present invention has been completed.

  That is, the present invention comprises an alkylene oxide derivative represented by the following general formula (1) and having a molecular weight of 1,000 to 5,000, and an ester of pentaerythritol and benzoic acid represented by the following general formula (2). It is a cosmetic characterized by.

^{R 1 O - [(AO)} m (EO) n] -R 2 ... (1)

(In the formula, AO is an oxyalkylene group having 3 to 4 carbon atoms, EO is an oxyethylene group, m and n are average addition moles of oxyalkylene groups and oxyethylene groups having 3 to 4 carbon atoms, respectively, 1 ≦ m ≦ 70, 1 ≦ n ≦ 70, and the ratio of the oxyethylene group to the total of the oxyalkylene group and the oxyethylene group is 20 to 80% by mass. R ¹ and R ² are the same or different hydrocarbon groups having 1 to 4 carbon atoms or hydrogen atoms, and the ratio of the number of hydrogen atoms to the number of hydrocarbon groups of R ¹ and R ² is 0.15 or less. .)

(Wherein R ³ and R ² represent a hydrogen atom, a linear or branched fatty acid residue having 1 to 24 carbon atoms, or a benzoic acid residue.)

In the present invention, it is preferable that R ³ of the ester of pentaerythritol and benzoic acid represented by the general formula (2) is a 2-ethylhexanoic acid residue and R ⁴ is a benzoic acid residue. Further, 5 to 80% by mass of the alkylene oxide derivative represented by the general formula (1) and 5 to 80% by mass of the pentaerythritol and benzoic acid ester represented by the general formula (2) are blended. It is preferable. Furthermore, the cosmetic of the present invention is preferably a lip cosmetic.

  According to the cosmetic of the present invention, for example, when applied to the lips, it can be made into a lip cosmetic that has an excellent moisturizing effect, is smooth and easy to apply, has no stickiness, and has a good odor. Further, it is possible to provide eye shadow cosmetics excellent in gloss and moisturizing effect when used, and makeup, and hair cosmetics excellent in gloss and moisturizing effect and hair-styling ability.

The present invention is described in detail below.
(Alkylene oxide derivatives)
In the alkylene oxide derivative represented by the formula (1) to be blended in the cosmetic of the present invention, AO is an oxyalkylene group having 3 to 4 carbon atoms, and examples include an oxypropylene group, an oxybutylene group, an oxyisobutylene group, A trimethylene group, a tetramethylene group, etc. are mentioned. Preferably, an oxypropylene group and an oxybutylene group are mentioned.

  m and n are the average addition mole numbers of oxyalkylene groups having 3 to 4 carbon atoms and oxyethylene groups, respectively, 1 ≦ m ≦ 70, 1 ≦ n ≦ 70, and oxyalkylene groups having 3 to 4 carbon atoms and oxy The ratio of the oxyethylene group to the total of ethylene groups is 20 to 80% by mass, preferably 30 to 50% by mass. When the proportion of oxyethylene groups is too low, the stability at high temperatures is lowered, and when the proportion of oxyethylene groups is too high, the solubility in the lip cosmetic base is deteriorated.

R ¹ and R ² are each a hydrocarbon group having 1 to 4 carbon atoms or a hydrogen atom, and examples of the hydrocarbon group include a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, a sec-butyl group, Examples thereof include a tert-butyl group. A methyl group and an ethyl group are preferable, and a methyl group is particularly preferable. Hydrocarbon groups having 5 or more carbon atoms are less hydrophilic and less moist. R ¹ and R ² may be the same or different.

R ¹ and R ² may be the same type, or a mixture of a hydrocarbon group having 1 to 4 carbon atoms and a hydrogen atom, or a mixture of different hydrocarbon groups having 1 to 4 carbon atoms. Good. However, among the hydrocarbon groups of R ¹ and R ² , the existence probability of hydrocarbon groups and hydrogen atoms is such that the ratio Y / X of the number of hydrogen atoms (Y) to the number of hydrocarbon groups (X) is 0.15. Hereinafter, it is preferably 0.06 or less. When the ratio of Y / X exceeds 0.15, a sticky feeling comes out.

The molecular weight of the alkylene oxide derivative is 1,000 to 5,000, preferably 3,000 to 5,000. When the molecular weight is small, the alkylene oxide derivative itself has a taste, and in the case of lip cosmetics, the taste may be undesirable. In lip cosmetics, the taste is one of the important factors affecting the commercial value. On the other hand, since the viscosity increases as the molecular weight increases, it can be felt as a moderate fit up to a molecular weight of up to about 5000, but sometimes it feels like a heavy weight and stickiness when the molecular weight is increased.
In the present invention, ethylene oxide and alkylene oxide having 3 to 4 carbon atoms are preferably added in a random manner in view of stability and the like.

  Specific examples of the alkylene oxide derivative of the present invention include POE (14) POP (7) dimethyl ether, POE (17) POP (4) dimethyl ether, POE (10) POP (10) dimethyl ether, POE (7) POP (12 ) Dimethyl ether, POE (15) POP (5) dimethyl ether, POE (25) POP (25) dimethyl ether, POE (27) POP (14) dimethyl ether, POE (55) POP (28) dimethyl ether, POE (22) POP (40) ) Dimethyl ether, POE (35) POP (40) dimethyl ether, POE (50) POP (40) dimethyl ether, POE (36) POP (41) dimethyl ether, POE (55) POP (30) dimethyl ether, POE (30) POP (3) ) Dimethyl ether, POE (25) POP (30) dimethyl ether, POE (90) POP (17) dimethyl ether, POE (14) POB (7) dimethyl ether, POE (10) POP (10) diethyl ether, POE (10) POP ( 10) Dipropyl ether, POE (10) POP (10) dibutyl ether and the like. The POE, POP, and POB are abbreviations for polyoxyethylene, polyoxypropylene, and polyoxybutylene, respectively, and may be abbreviated as follows.

  The alkylene oxide derivative of the present invention can be produced by a known method. For example, it can be obtained by subjecting a compound having a hydroxyl group to addition polymerization of ethylene oxide and an alkylene oxide having 3 to 4 carbon atoms, and then subjecting an alkyl halide to an ether reaction in the presence of an alkali catalyst.

  In the case of a lip cosmetic, the blending amount of the alkylene oxide derivative in the cosmetic of the present invention is preferably in the range of 1 to 50% by mass, more preferably 2 to 30% by mass, based on the total amount. If the amount is too small, the moisturizing effect is not sufficient, and if the amount is too large, it may be difficult to stably mix.

(Ester of pentaerythritol and benzoic acid)
As an ester of pentaerythritol and benzoic acid represented by the general formula (2) to be blended in the cosmetic of the present invention, R ³ is a 2-ethylhexanoic acid residue having 8 carbon atoms, and R ⁴ is benzoic acid. What is represented by following formula (3) which is ester of a residue is suitable.

  The ester of this benzoic acid residue is obtained by esterifying 1 mole of pentaerythritol, 3 moles of benzoic acid and 1 mole of 2-ethylhexanoic acid, followed by removal of unreacted substances, decolorization treatment, and deodorization treatment. Can be obtained.

  In the case of a lip cosmetic, the blending amount of the ester of pentaerythritol and benzoic acid is preferably in the range of 5 to 80% by mass, more preferably 10 to 60% by mass, based on the total amount. When the blending amount is less than 5% by mass, the effect of improving gloss on the lips is not sufficient, and when the blending amount exceeds 80% by mass, the stickiness when the upper and lower lips come into contact is unfavorable.

  In the cosmetics of the present invention, in addition to the essential components described above, other components used in the normal cosmetics and pharmaceutical fields can be blended as necessary in a qualitative and quantitative range that does not impair the effects of the present invention. it can.

  Oils include hydrocarbon oils such as polyisobutene, polybutene, squalane, liquid paraffin, petrolatum, higher fatty acids such as myristic acid, palmitic acid, stearic acid, 12-hydroxystearic acid, behenic acid, cetyl alcohol, stearyl alcohol, oleyl alcohol Higher alcohols such as batyl alcohol, cetyl-2-ethylhexanoate, 2-ethylhexyl palmitate, 2-octyldodecyl myristate, neopentyl glycol-2-ethylhexanoate, glyceryl trioctanoate, pentaerythritol tetraoctanoate, Esters such as glyceryl triisostearate, glyceryl diisostearate, isopropyl myristate, myristyl myristate, glyceryl trioleate, olive oil, Oils such as bocado oil, jojoba oil, sunflower oil, safflower oil, coconut oil, macadamia nut oil, mink oil, lanolin, liquid lanolin, lanolin acetate, castor oil, dimethylpolysiloxane, methylphenylpolysiloxane, highly polymerized gum Examples include silicone oils such as dimethylpolysiloxane, polyether-modified silicone and amino-modified silicone, and fluorine-based oils such as fluorine-modified dimethylpolysiloxane, fluorine-modified methylphenylpolysiloxane, perfluoropolyether and perfluorocarbon.

  Examples of the wax include carnauba wax, candelilla wax, bees wax, mole, polyethylene wax, ceresin wax, microcrystalline wax, and solid paraffin wax.

  Examples of the humectant include polyhydric alcohol humectants such as glycerin, propylene glycol, and 1,3 butylene glycol.

  In addition, various emulsifiers, surfactants, thickeners, gelling agents, metal soaps, water-soluble polymers, oil-soluble polymers, drugs, antioxidants, pigments, dyes, pearl agents, lame agents, organic and inorganic powders Perfumes and the like can be blended.

  The cosmetic of the present invention is produced by mixing the ingredients including the above essential ingredients with heating and stirring, degassing, filling the container, and cooling. The dosage form of the cosmetic of the present invention is arbitrary, and can be, for example, a stick, pencil, paste, or liquid, and a W / O emulsification system containing water and a humectant is also possible.

  The cosmetics of the present invention can be applied to general cosmetics such as lip cosmetics, eye shadow cosmetics, and hair cosmetics, and in particular, sticks, pencils, and pastes poured into and filled in a feeding tray. Liquid cosmetics filled in a tube or tube container with a built-in applicator. In the case of lip cosmetics, in addition to lipstick, it can also be applied to lip gloss, lip balm, etc. that do not contain coloring materials. .

Next, examples of the present invention will be described.
The present invention is not limited to the following examples, and various modifications can be made without departing from the gist of the present invention. In the following description, the unit of the blending amount is mass%.

Examples 1 to 3 and Comparative Examples 1 and 2 (lip gloss)
Each formulation component shown in Table 1 below was heated to 50 ° C., stirred, mixed and degassed, and then filled into a tube to obtain a lip gloss. In Table 1, the esters of pentaerythritol and benzoic acid used in Examples and Comparative Examples are those represented by the above general formula (3), and the other components are those that are generally commercially available as cosmetic raw materials. It was. The resulting lip gloss was evaluated for solubility and gloss when applied by the following method.

(Lip gloss evaluation method)
1. Solubility The state at room temperature of the lip glosses of Examples and Comparative Examples prepared by the above method was observed. Evaluation criteria were determined as follows.
○: Dissolved transparently.
X: It is cloudy.

2. Gloss when applied Using the lip glosses of the examples and comparative examples, 10 panelists evaluated the gloss on the lips when applied (immediately after application to 2 hours later) by a use test. The evaluation criteria were determined as follows.

(Evaluation criteria)
A: 8 or more out of 10 were considered good.
○: 6 or more out of 10 and less than 8 were considered good.
Δ: 4 or more out of 10 and less than 6 were good.
X: 3 or less out of 10 were considered good.
The evaluation results are shown in Table 1 below.

  As is apparent from Table 1, when polybutene is used as a polish, the compatibility with the alkylene oxide derivative is poor and the product is separated. In addition, in order to increase the compatibility of the alkylene oxide, diisostearyl malate is used instead of polybutene. When using, there is no gloss when applied. On the other hand, it has been found that when pentaerythritol and an ester of benzoic acid are used in combination, a lip gloss having good stability can be obtained without impairing the gloss.

Example 4 (Eyeshadow cosmetic)
Pentaerythritol / benzoic acid ester 30% by mass
POE (14) POP (7) Dimethyl ether 10
Glyceryl tri-2-ethylhexanoate 5
Methylphenylpolysiloxane 5
Ceresin wax 11
Carnavalou 1
Sorbitan sesquioleate 2
Titanium oxide 3
Mica titanium 15
Mica 20
Ultramarine 2
Black iron oxide 1
Perfume

  The same pentaerythritol benzoate ester as in Example 1 was used. The other components used were generally commercially available as cosmetic raw materials. Each formulation component shown in this example was heated to 85 ° C., stirred, mixed and defoamed, then filled into a stick container and cooled to 5 ° C. to obtain an eye shadow composition. This cosmetic had no problems with stability such as aggregation of coloring materials.

Example 5 (hair cosmetic)
Pentaerythritol / benzoic acid ester 40% by mass
POE (36) POP (41) dimethyl ether 5
Polyoxypropylene (40) butyl ether 21
Lipophilic glyceryl monostearate 8
Self-emulsifying glyceryl monostearate 10
Sarah Beeswax 10
Owl 5
Carnavalou 1
Perfume appropriate amount

  The same pentaerythritol benzoate ester as in Example 1 was used. The other components used were generally commercially available as cosmetic raw materials. Each formulation component shown in this example was heated to 85 ° C., stirred and mixed, defoamed, then filled into a stick container and cooled to 5 ° C. to obtain a hair cosmetic. This cosmetic had no stability problems.

Example 6 (Emulsified cream hair cosmetic)
Pentaerythritol / benzoic acid ester 5% by mass
POE (14) POP (7) dimethyl ether 3
Dimethylpolysiloxane 10
SILWET 236-L (Nihon Unicar) 0.1
Polyoxyethylene methylpolysiloxane copolymer 0.2
Ethanol 10
Propylene glycol 5
2-amino-2-methyl-1-propanol appropriate amount edetate trisodium appropriate amount xanthan gum 0.1
Vinyl acetate / vinyl pyrrolidone copolymer 0.5
Acrylic acid / alkyl methacrylate copolymer 0.2
Carboxyvinyl polymer 0.4
Highly polymerized dimethylsiloxane
Methyl (aminopropyl) siloxane copolymer 0.5
Highly polymerized dimethylpolysiloxane 1
Purified water 64
Perfume

  The same pentaerythritol benzoate ester as in Example 1 was used. The other components used were generally commercially available as cosmetic raw materials. Each formulation component shown in this example was stirred and mixed (emulsified) at room temperature for defoaming and then filled into a glass bottle container to obtain an emulsified cream hair cosmetic. This cosmetic had no stability problems.

Example 7 (lipstick)
Pentaerythritol / benzoic acid ester 20% by mass
POE (36) POP (41) dimethyl ether 3
Polyethylene 1
Ceresin 12
Carnavalou 2
Castor oil 10
Glyceryl triisostearate 10
Neopentyl glycol dicaprate 39
Bengala 1
Red No. 202 2
Vitamin A palmitate Appropriate amount Tocopherol Appropriate amount Fragrance Appropriate amount

  The same pentaerythritol benzoate ester as in Example 1 was used. The other components used were generally commercially available as cosmetic raw materials. Each formulation component shown in this example was heated to 85 ° C., stirred, mixed and defoamed, then filled into a lipstick container and cooled to 5 ° C. to obtain a lipstick. This cosmetic had no stability problems such as color material aggregation.

Example 8 (ointment lip balm)
Pentaerythritol / benzoic acid ester 20% by mass
POE (36) POP (41) dimethyl ether 5
Vaseline 20
Dextrin palmitate 8
Macadamia nut oil 3
Tocopherol appropriate amount liquid paraffin 44

  The same pentaerythritol benzoate ester as in Example 1 was used. The other components used were generally commercially available as cosmetic raw materials. Each formulation component shown in this example was heated to 90 ° C., stirred, mixed, defoamed, and then filled into an ointment jar to obtain an ointment lip balm. This cosmetic had no stability problems such as separation.

Example 9 (stick-like lip balm)
Pentaerythritol / benzoic acid ester 30% by mass
POE (36) POP (41) dimethyl ether 5
Microcrystalline wax 1
Ceresin 10
Candelilla Row 2
Vaseline 30
Diisostearyl malate 10
Glyceryl triisooctanoate 21
L-Menthol 1
Tocopherol appropriate amount Tocopherol acetate appropriate amount

The same pentaerythritol benzoate ester as in Example 1 was used. The other components used were generally commercially available as cosmetic raw materials. Each formulation component shown in this example was heated to 85 ° C., stirred, mixed, defoamed and then filled into a lipstick container to obtain a stick-shaped lip balm. This cosmetic had no stability problems.

Claims (4)

An alkylene oxide derivative represented by the following general formula (1) and having a molecular weight of 1,000 to 5,000, and pentaerythritol and benzoic acid ester represented by the following general formula (2) are blended. Cosmetics.
^{R 1 O - [(AO)} m (EO) n] -R 2 ... (1)
(In the formula, AO is an oxyalkylene group having 3 to 4 carbon atoms, EO is an oxyethylene group, m and n are average addition moles of oxyalkylene groups and oxyethylene groups having 3 to 4 carbon atoms, respectively, 1 ≦ m ≦ 70, 1 ≦ n ≦ 70, and the ratio of the oxyethylene group to the total of the oxyalkylene group and the oxyethylene group is 20 to 80% by mass. R ¹ and R ² are the same or different hydrocarbon groups having 1 to 4 carbon atoms or hydrogen atoms, and the ratio of the number of hydrogen atoms to the number of hydrocarbon groups of R ¹ and R ² is 0.15 or less. .)

(Wherein R ³ and R ⁴ represent a hydrogen atom, a linear or branched fatty acid residue having 1 to 24 carbon atoms, or a benzoic acid residue.) 2. The ester of pentaerythritol and benzoic acid represented by the general formula (2) is characterized in that R ³ is a 2-ethylhexanoic acid residue and R ⁴ is a benzoic acid residue. Cosmetics.   1 to 50% by mass of the alkylene oxide derivative represented by the general formula (1) and 5 to 80% by mass of the pentaerythritol and benzoic acid ester represented by the general formula (2). The cosmetic according to claim 1, wherein the cosmetic is characterized by the following. The cosmetic according to any one of claims 1 to 3, wherein the cosmetic is a lip cosmetic.