JP2009191007A - Cosmetic - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cosmetic for eyelashes, having high curl-up force and curl-keeping force, and also exhibiting excellent storage stability. <P>SOLUTION: The cosmetic for the eyelashes contains (A) a solid fat prepared from sunflower seeds, and (B) a both terminals-modified organopolysiloxane represented by general formula (1) (wherein, R<SP>11</SP>to R<SP>16</SP>are each a 1-6C alkyl group, a phenyl group or a naphthyl group; R<SP>17</SP>and R<SP>18</SP>are each a saturated hydrocarbon group having 16-600 average carbon number and obtained by the living polymerization of ethylene; and s is a number of ≥0). <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a cosmetic for eyelashes.

  Conventionally, in mascara, it is known that high curl-up force can be obtained by containing a large amount of wax. However, the curl-keeping power to maintain the curled-up shape for a long time is insufficient, and when a large amount of high-hardness natural wax such as carnauba wax is contained, the storage stability, particularly storage stability at high temperatures There is a problem that becomes worse (for example, Patent Document 1).

In addition, it is known that high heat stability can be obtained with respect to sticky cosmetics by using wax obtained from sunflower seeds (for example, Patent Document 2). However, there is a problem that the hardness of the wax itself is insufficient as compared with a high-hardness natural wax such as carnauba wax.
JP 2001-192559 A Japanese Examined Patent Publication No. 63-66281

  An object of the present invention is to provide a cosmetic for eyelashes that has high curl-up force and curl-keep force and is excellent in storage stability.

  When the present inventor uses a combination of solid fat obtained from sunflower seeds and a specific both-end-modified organopolysiloxane, the cosmetic for eyelashes has high curl-up and curl-keeping power and excellent storage stability. It was found that it can be obtained.

The present invention includes the following components (A) and (B):
(A) a solid fat obtained from sunflower seeds,
(B) General formula (1)

(In the formula, R ^{11 to} R ¹⁶ are the same or different and each represent an alkyl group having 1 to 6 carbon atoms, a phenyl group or a naphthyl group, and R ¹⁷ and R ¹⁸ are the same or different and are obtained by living polymerization of ethylene. A linear or branched saturated hydrocarbon group having an average carbon number of 16 to 600, and s represents a number of 0 or more)
The cosmetics for eyelashes containing the both terminal modified organopolysiloxane represented by these are provided.

  The cosmetic for eyelashes of the present invention has high curl-up force and curl-keeping force, and is excellent in storage stability.

  The solid fat obtained from sunflower seeds of component (A) used in the present invention is mainly composed of monoesters of higher saturated fatty acids and higher saturated alcohols, particularly monoesters of higher saturated fatty acids having 20 or more carbon atoms and higher saturated alcohols. Although it varies depending on the purification method, etc., it is usually a solid substance having a monoester content of 40% by mass or more. About 60% by mass of the higher saturated fatty acid constituting the monoester is arachidic acid and behenic acid having 20 and 22 carbon atoms, and about 60% by mass of the higher saturated aliphatic alcohol is docosanol, tetratetrahydrocarbon having 22, 24, and 26 carbon atoms. It consists of cosanol and hexacosanol.

  The solid fat obtained from sunflower seeds can be obtained by, for example, solvent extraction, degumming, deoxidation, decolorization, etc. from sunflower seeds, fractionated by wintering, etc., and concentrating oil with a high wax content. . As such a thing, commercial items, such as Sunflower Wax (made by Koster), can be mentioned.

  As solid fats obtained from sunflower seeds, those having a melting point of 50 to 100 ° C., particularly 60 to 90 ° C., and further 70 to 90 ° C. have the storage stability of cosmetics and the hardness appropriate for the finished cosmetic coating film. It is preferable at the point to provide.

  The solid fat obtained from the sunflower seeds of component (A) is preferably contained in the total composition in an amount of 0.5 to 50% by mass, particularly 1 to 20% by mass from the viewpoint of curl keeping power improvement and storage stability.

The both-end-modified organopolysiloxane of component (B) used in the present invention is represented by the general formula (1).
Among the compounds represented by R ^{11 to} R ¹⁶ in the general formula (1), examples of the alkyl group having 1 to 6 carbon atoms include methyl group, ethyl group, propyl group, isopropyl group, butyl group, s-butyl group, t -A butyl group, a pentyl group, a hexyl group, etc. are mentioned. R ^{11 to} R ¹⁶ are particularly preferably a methyl group, an ethyl group, or a phenyl group. These R ^{11 to} R ¹⁶ may be the same or different for each repeating unit.

In the general formula (1), the saturated hydrocarbon group obtained by living polymerization of ethylene represented by R ¹⁷ and R ¹⁸ represents a linear or branched saturated hydrocarbon group. It is preferable that it is a group from the viewpoint of expressing a curl-up force. The average carbon number is 16 to 600, more preferably 26 to 300, and particularly preferably 32 to 300. When the average carbon number is less than 16, it becomes oily and it is difficult to effectively exhibit the effect of improving the curl-up force, and when it exceeds 600, workability during polymerization is lowered. The average carbon number is calculated from the weight average molecular weight.

  In general formula (1), s is a number of 0 or more, but a number of 0 to 50 is preferable, and a number of 0 to 20 is particularly preferable. Within this range, it is possible to sufficiently improve the hardness of the mascara film, and to exhibit an excellent curl-up force.

  Such an organopolysiloxane can be produced, for example, by the method described in JP-A-8-73744. For example, a living siloxane obtained after living polymerization of ethylene is reacted with a cyclic siloxane, and the cyclic siloxane is further reacted. The polymer can be produced by polymerizing a chain siloxane having a hydroxyl group at the terminal or a mixture thereof in the presence of a catalyst.

As the component (B), both terminal-modified organopolysiloxanes can be used in one or more kinds, and the total composition contains 0.005 to 25% by mass, particularly 0.03 to 12% by mass, and has a curl-up force. It is preferable in terms of improvement and workability.
In addition, the content ratio (mass ratio) of (A) solid fat obtained from sunflower seeds and (B) both terminal-modified organopolysiloxanes is (A) :( B) = 99: 1 to 1:99, particularly 99. : 1 to 50:50 is preferable in terms of curl-up force and curl keeping force.

In this invention, it is preferable to contain a volatile oil agent from the point of a drying rate.
The volatile oil refers to an oil having a boiling point of 300 ° C. or less at normal pressure, and is preferably a volatile hydrocarbon oil or a volatile silicone oil. For example, volatile hydrocarbon oil such as isododecane or hydrogenated polyisobutene; Examples include volatile silicone oils such as siloxane, decamethyltetrasiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane. Of these, isododecane and saturated isoparaffinic hydrocarbon oil (hydrogenated polyisobutene) mainly having 8 to 16 carbon atoms are preferred. As commercial products, Marcazole R manufactured by Maruzen Petrochemical Co., Ltd., IP Solvent 1620 manufactured by Idemitsu Kosan Co., Ltd., and the like 2028 can be used.

  Although content in particular of a volatile oil agent is not restrict | limited, It is preferable that it is 1-90 mass% in the whole composition, especially 10-70 mass%.

The cosmetic of the present invention can further contain a non-volatile liquid oil usually used in cosmetics.
Examples of such non-volatile liquid oils include branched hydrocarbon oils such as liquid isoparaffin and squalane, branched fatty acids such as isostearic acid, branched higher alcohols such as octyldodecanol, isopropyl isostearate, octyldodecyl isostearate, and isotridecyl isonanoate. And neopentyl glycol dicaprate, diisostearyl malate, jojoba oil, castor oil, macadamian nut oil, olive oil, rapeseed oil, cocoon oil, soybean oil, cottonseed oil, sunflower oil, and other ester oils. Particularly preferred are liquid isoparaffin, squalane, isostearic acid, octyldodecanol, isopropyl isostearate, isotridecyl isonanoate, octyldodecyl isostearate, neopentyl glycol dicaprate, and jojoba oil.

  One or more kinds of non-volatile liquid oils can be used, and 0.1 to 20% by weight, particularly 0.5 to 15% by weight in the total composition is cleansing property and finish at the time of coating. To preferred.

In addition to the above, the cosmetic of the present invention can further contain solid fat (wax) that is usually used in cosmetics.
Solid fat (wax) refers to those having a melting point of 40 ° C. or higher and water-insoluble. In particular, those having a melting point of 60 to 110 ° C. are preferred, and animal waxes, vegetable waxes, mineral waxes, synthetic waxes and the like can be used. Specific examples include rice bran wax, carnauba wax, candelilla wax, beeswax, ceresin, paraffin wax, microcrystalline wax, polyethylene wax, silicone wax, hydrogenated jojoba oil, and the like. Of these, paraffin wax and microcrystalline wax having a melting point of 50 to 110 ° C. are preferable from the viewpoint of high-temperature storage stability and workability, and beeswax is preferable from the viewpoint of workability and imparting film flexibility. As a commercially available product, BEES WAX-S manufactured by CRODA JAPAN, Inc. can be used.

  One or more kinds of solid fats (waxes) can be used, and 5 to 50% by mass, particularly 10 to 40% by mass in the total composition expresses curl up force, curl keeping force and volume. preferable.

In addition, the cosmetic of the present invention can contain a thickener usually used in cosmetics in the oil phase in order to curl up and hold the eyelashes.
Examples of the thickener include organically modified clay minerals such as disteardimonium hectorite, disteadimonium bentonite, dimethyl distearyl ammonium hectorite, and dimethyl distearyl ammonium bentonite. These are used as a pregel dispersed in advance by adding a polar additive such as ethanol or propylene carbonate and a solvent, whereby the subsequent workability is further improved.
One or more organically modified clay minerals can be used, and 0.05 to 20% by mass, especially 0.3 to 15% by mass in the total composition provides a sufficient thickening effect and is finished. In addition, the storage stability is good and preferable.

Moreover, as a thickener, dextrin fatty acid esters, such as dextrin palmitate, etc. can also be used. Dextrin fatty acid ester also has an effect of suppressing crystallization of wax. As a commercially available product, Leo Pearl KL2 manufactured by Chiba Flour Milling Co., Ltd. can be used.
One or more dextrin fatty acid esters can be used, and 0.05 to 20% by mass, particularly 0.3 to 10% by mass in the total composition is effective for thickening and wax crystallization. This is preferable.

The cosmetic of the present invention can be made into an oil-in-water emulsion composition or a water-in-oil emulsion composition, and can contain various surfactants for emulsification.
The surfactant is not particularly limited as long as it can stably emulsify, and silicone surfactants, nonionic surfactants, and the like can be used. Examples of silicone surfactants include alkyl glyceryl ether-modified silicones, polyoxyethylene / methyl polysiloxane copolymers, dimethicone polyols, alkyl dimethicone polyols, and cross-linked alkyl polyether-modified silicones. Alkyl glyceryl ether-modified silicones and polyoxyethylene / methyl polysiloxane copolymers are preferred. Specifically, SH-3775M manufactured by Toray Dow Corning Silicone Co., Ltd. or the like can be used as a product described in the production example of JP-A-5-39208 or a commercial product.

  Further, as the nonionic surfactant, polyoxyethylene alkyl ether, polyoxyethylene glycerol monostearate, alkyl glyceryl ether, polyoxyethylene hydrogenated castor oil triisostearate and the like are preferable. In the case of a water-in-oil emulsion composition, those having an HLB of about 4 to 9 are preferred, and in the case of an oil-in-water emulsion composition, those having an HLB of about 11 to 16 are preferred.

  One or more surfactants can be used, and it is preferable to contain 0.1 to 5% by mass in the total composition.

  The water phase can contain an aqueous solvent such as a lower alcohol having 1 to 4 carbon atoms in addition to water, and can contain a film agent, an inorganic salt, and other various additives. Examples of the film agent include water-soluble polymers such as polyvinyl alcohol, polyvinyl pyrrolidone, carboxymethyl cellulose, and starch.

  Furthermore, a fast-drying film-forming polymer emulsion can be contained for the purpose of further improving the makeup holding and the curl-up effect. Such film-forming polymer emulsions include homopolymer emulsions and copolymer emulsions of alkyl esters of acrylic acid and methacrylic acid, alkyl acrylate / styrene copolymer emulsions, polyvinyl acetate polymer emulsions, vinyl acetate / alkyl acrylate emulsions, Examples thereof include silicone polymer emulsions, and alkyl acrylate copolymer emulsions are particularly preferable.

  Further, it is preferable to contain magnesium sulfate as an inorganic salt from the viewpoint of improving high-temperature storage stability and suppressing lumps during coating. Magnesium sulfate is preferably contained in the total composition in an amount of 0.001 to 7 mass%, particularly 0.05 to 3 mass%.

  In addition to the above-mentioned components, the cosmetic of the present invention includes components usually used in cosmetics, for example, spherical powders such as PMMA, nylon powder, silica, etc .; white pigments, organic pigments, inorganic pigments, pigments such as iron oxide, titanium mica, etc. Powder: Powders such as bentonite, talc and kaolin, and fibers can be contained to enhance the long rush effect.

  Various powders should be surface-treated with silicone, higher fatty acid, higher alcohol, fatty acid ester, metal soap, amino acid, alkylsilane, acrylic silicone, fluorine compound, etc., or encapsulated in organic or inorganic microcapsules. Can do. When various powders are contained in the oil phase, the surface of the powder is preferably subjected to hydrophobic treatment such as alkylsilane treatment or silicone treatment in order to improve dispersibility and high-temperature storage stability.

  In addition, the cosmetic for eyelashes of the present invention can contain an ultraviolet absorber, an ultraviolet scattering agent, a moisturizing agent, a pigment, a fragrance, an antioxidant, a sequestering agent, and the like.

  The solid content concentration in the oil phase is preferably 10 to 70% by mass, particularly 30 to 60% by mass, because the film strength is sufficiently expressed, the volume feeling is excellent, the storage stability and the finish are also favorable. . The solid content is a component that is solid or semi-solid at 25 ° C. in a single state, and is a film agent dispersed in the oil phase in addition to the component (A), the component (B), and the wax. , Thickeners, powders, pigments, fibers, preservatives and the like.

  In the eyelash cosmetic of the present invention, the continuous phase is preferably in the form of an oil phase containing water or a volatile oil. It is preferable because water or a volatile oil quickly evaporates so that the curl shape can be easily maintained and stickiness after coating is eliminated.

  The cosmetic of the present invention can be produced by uniformly mixing and stirring each component according to a normal method.

  The eyelash cosmetic of the present invention is applied to the eyelashes at a viscosity of 100 to 2000000 mPa · s, particularly 150,000 to 1000000 mPa · s, using a B-type viscometer (type B8R, manufactured by Toki Sangyo Co., Ltd.) at 25 ° C. In this case, the adhesion to the object is improved, the drying speed is high, and the finish can be improved.

  The cosmetic for eyelashes of the present invention is applied using a brush in which fibers normally used in mascara are twisted with a wire, an applicator having a comb shape, a coil shape, etc., a resin molded brush formed into a brush shape using a resin, etc. can do. Among these, it is particularly preferable to use a resin-molded brush formed into a brush shape using a resin.

Examples 1-2 and Comparative Examples 1-2
Mascara compositions having the compositions shown in Tables 1 and 2 were produced and evaluated for curl-up force, curl keeping force, and storage stability. The results are shown in Table 1 and Table 2 together.

(Production method)
For Example 1 and Comparative Example 1, the oil phase component was stirred and melted at 95 ° C., and then the pigment was added. When the mixture was cooled to 45 ° C. with stirring, the aqueous phase component that had been uniformly dissolved in advance was added, Furthermore, after cooling to room temperature with stirring, an oily mascara composition was obtained by deaeration.
For Example 2 and Comparative Example 2, the oil phase component that was stirred and melted at 95 ° C. was added to the aqueous phase component that had been uniformly dissolved in advance at 85 ° C. and cooled to room temperature while stirring. By deaeration, an aqueous mascara composition was obtained.

(Evaluation methods)
About each mascara composition, the curl-up power and the curl keeping power were actually used by 20 female monitors, and sensory evaluation was performed.
(1) Curl-up power:
The state immediately after application of each mascara was visually evaluated and determined by the number of people who were evaluated as having excellent curl-up power.

(2) Curl keeping power:
The state after 6 hours from the application of each mascara was visually evaluated and determined by the number of people who were evaluated as having excellent curl keeping power.

(3) Storage stability:
Each mascara was placed in a sealed container and stored at 40 ° C. for 2 weeks. The viscosity before and after storage was measured at 25 ° C., the rate of increase in viscosity was determined, and the following determination was performed. The viscosity was measured with a B8R viscometer.
A: The viscosity increase before and after storage is less than double after storage at 40 ° C. for 2 weeks.
○: Storage at 40 ° C. for 2 weeks, viscosity increase before and after storage is 2 times or more and less than 2.5 times.
Δ: Storage at 40 ° C. for 2 weeks, viscosity increase before and after storage is 2.5 times or more and less than 3 times.
×: Storage at 40 ° C. for 2 weeks, viscosity increase before and after storage is 3 times or more.

* 1: BEES WAX-S (melting point: 60 to 67 ° C.), manufactured by Croda Japan.
* 2: Hi-Mic-1090 (melting point: 86 to 90 ° C.) manufactured by Nippon Seiki Co., Ltd.
* 3: Sunstar Wax (melting point: 74-77 ° C.) manufactured by Koster.
* 4: Deodorized and purified carnauba wax No. 1 (melting point: 80 to 86 ° C.) manufactured by Celalica NODA.
* 5: In the general formula (1), R ^{11 to} R ¹⁶ = methyl group, R ¹⁷ = R ¹⁸ = C32 linear alkyl group, s = 0 (melting point 71 to 75 ° C.): JP-A-8-73744 Produced in the same manner as in the examples.
* 6: Leopard KL2, manufactured by Chiba Flour Mills.
* 7: SR-1000, manufactured by Momentive Performance Materials Japan.
* 8: EMALEX RWIS-315EX manufactured by Nippon Emulsion Co., Ltd.
* 9: Refined candelilla wax SR-2 (melting point: 68 to 72 ° C.) manufactured by Mitsuba Trading Co., Ltd.
* 10: Yodosol GH34F manufactured by NSC Japan.
* 11: GOHSENOL EG-25 manufactured by Nippon Synthetic Chemical Industry Co., Ltd.

  From the results shown in Tables 1 and 2, the mascara composition of the present invention had high curl up force and curl keeping force, and was excellent in storage stability. On the other hand, Comparative Example 1 and Comparative Example 2 that do not contain the solid fat obtained from the sunflower seed of component (A) were excellent in curl-up force but poor in curl keeping force and storage stability at 40 ° C. .

Claims (2)

The following components (A) and (B);
(A) a solid fat obtained from sunflower seeds,
(B) General formula (1)

(In the formula, R ^{11 to} R ¹⁶ are the same or different and each represent an alkyl group having 1 to 6 carbon atoms, a phenyl group or a naphthyl group, and R ¹⁷ and R ¹⁸ are the same or different and are obtained by living polymerization of ethylene. A linear or branched saturated hydrocarbon group having an average carbon number of 16 to 600, and s represents a number of 0 or more)
Cosmetics for eyelashes containing both terminal modified organopolysiloxane represented by these.   (A) The cosmetic for eyelashes according to claim 1, wherein the solid fat obtained from sunflower seeds has a melting point of 50 to 100 ° C.