JP7022545B2 - Lip cosmetics - Google Patents

Description

The present invention relates to lip cosmetics.

In lip cosmetics, it is required that the pigment is uniformly dispersed in the oil component and exhibits a bright appearance color while being excellent in usability and durability.
For example, in Patent Document 1, an organic pigment surface-treated with an alkoxytitanium alkylate, a silicone having a nonionic hydrophilic group, and a lip cosmetic containing a liquid oil at 25 ° C. are described in the oil component of the organic pigment. It is described that the dispersibility of the silicone is improved and the change in the color of the cosmetic is suppressed.

JP-A-2015-199690

According to the present inventor, in a lip cosmetic using a single hydrophobized colored pigment, when a bulk of the cosmetic is filled in a container, weld lines are generated due to the flow of the pigment, and streaks and unevenness are formed in the appearance. I found the problem of being easy.

The present inventor uses two or more different hydrophobized color pigments in combination with specific hydrocarbon oils and ester oils to weld lines when a bulk of cosmetics is filled into a mold or container. The streaks and unevenness caused by the occurrence of lips are suppressed, and the obtained cosmetics have the same appearance color and application color, and when applied to the lips, the lipstick feels not hard and a good lip cosmetic is obtained. I found that it was possible.

In the present invention, the following components (A), (B) and (C):
(A) Hydrophobicized coloring pigment 0.01 to 20% by mass,
(B) Hydrocarbon oil having an average molecular weight of 800 to 4000, 2 to 50% by mass,
(C) 1-40% by mass of ester oil having a viscosity of 1000 mPa · s or more at 20 ° C.
The present invention relates to a lip cosmetic containing, and the component (A) contains two or more kinds of coloring pigments having different hydrophobizing treatments.

The lip cosmetic of the present invention is good because the appearance of the cosmetic is less likely to have streaks and unevenness derived from pigments, the appearance color and the applied color match, and when the cosmetic is applied to the lips, the lipstick feels hard and hard to feel. It is a thing.

The component (A) used in the present invention is a color pigment that has been hydrophobized.
Color pigments are those used in ordinary cosmetics, such as titanium oxide, zinc oxide, cerium oxide, aluminum oxide, yellow iron oxide, black iron oxide, red iron oxide, navy blue, ultramarine blue, chromium oxide, chromium hydroxide and the like. Metal oxides, manganese violet, metal complexes such as cobalt titanate, and inorganic pigments such as carbon black; Red No. 3, Red No. 104, Red No. 106, Red No. 201, Red No. 202, Red No. 204, Red 205 No., Red No. 220, Red No. 226, Red No. 227, Red No. 228, Red No. 230, Red No. 401, Red No. 405, Red No. 505, Orange No. 203, Orange No. 204, Orange No. 205, Yellow No. 4, Synthetic organic pigments such as Yellow No. 5, Yellow No. 401, Blue No. 1, Blue No. 404, organic pigments and lake pigments thereof; natural organic pigments such as β-carotene, caramel, paprika pigments, etc. are mentioned, and these coloring pigments are mentioned. Examples thereof include a composite pigment of the above, and a mixed pigment obtained by diluting these coloring pigments with an extender pigment such as barium sulfate or talc.
The coloring pigment of the component (A) may contain at least one or two or more selected from titanium oxide, zinc oxide, yellow iron oxide, black iron oxide, red iron oxide, synthetic organic pigments, organic pigments and lake pigments thereof. It is more preferable to contain at least one or more selected from titanium oxide, iron oxide, red iron oxide, yellow No. 4, blue No. 1, and lake pigments thereof, red No. 201 and red No. 202.

The hydrophobization treatment of these coloring pigments is not limited as long as it is a treatment applied to ordinary cosmetic powders, and is limited to fluorine-based compounds, silicone-based compounds, metal soaps, amino acid-based compounds, lecithin, and alkylalkoxy. A dry treatment, a wet treatment, or the like may be carried out by a usual method using one or more of surface treatment agents such as silane, oil agent, and organic titanate.
Specific examples of the surface treatment agent include fluorine compounds such as perfluoropolyether, perfluoroalkyl phosphate, perfluoroalkyl alkoxysilane, and fluorine-modified silicone; dimethylpolysiloxane, methylhydrogenpolysiloxane, cyclic silicone, and pieces. Silicone-based compounds such as terminal or bi-terminal trialkoxy group-modified organopolysiloxane, cross-linked silicone, silicone resin, fluorine-modified silicone resin, acrylic-modified silicone; aluminum stearate, aluminum myristate, zinc stearate, magnesium stearate, etc. Metallic soaps; amino acid compounds such as proline, hydroxyproline, alanine, glycine, sarcosin, glutamic acid, aspartic acid, lysine and derivatives thereof; lecithin, hydrogenated lecithin; alkyls such as trimethoxycaprylylsilane and triethoxycaprylylsilane Alkoxysilanes; oils such as polyisobutylene, waxes, fats and oils; organic titanates such as isopropyltriisostearoyl titanate and the like can be mentioned.

In the hydrophobized coloring pigment of the component (A), the treatment amount of each treatment agent is 0.1 to 20% by mass with respect to 100% by mass of the coloring pigment from the viewpoint of uniformly dispersing in the oil component. It is preferably present, more preferably 0.5 to 15% by mass, still more preferably 1 to 12% by mass.

In the present invention, the hydrophobized coloring pigment of the component (A) contains two or more kinds of coloring pigments having different hydrophobizing treatments.
The hydrophobized coloring pigment of the component (A) preferably contains at least a coloring pigment treated with (A-1) alkylalkoxysilane, and a coloring pigment treated with (A-1) alkylalkoxysilane. And, it is preferable to contain a coloring pigment which has been hydrophobized with a substance other than (A-2) alkylalkoxysilane.

In the component (A-1), the alkylalkoxysilane preferably has a branched or linear alkyl group having 6 to 20 carbon atoms, and examples thereof include triethoxycaprylylsilane and trimethoxycaprylylsilane. , Triethoxycaprylylsilane is more preferred.

In the component (A-2), as the hydrophobizing treatment other than the alkylalkoxysilane, one or more treated with one or more selected from organic titanate treatment, silicone treatment and amino acid treatment is preferable, and a composite treatment containing these is preferable. It may be.
As the organic titanate, alkoxytitanium alkylate is preferable, and for example, isopropyltriisostearoyl titanate, isopropyltriisomyristyloyl titanate, methyltriisostearoyl titanate, methyltriisomyristiloyl titanate, ethyltriisostearoyltitanate, ethyltri Examples thereof include isomilystyloyl titanate, and isopropyltriisostearoyl titanate is more preferable.
Examples of the silicone include dimethylpolysiloxane, methylhydrogenpolysiloxane, cyclic silicone, one-ended or two-ended trialkoxy group-modified organopolysiloxane, crosslinked silicone, silicone resin, fluorine-modified silicone resin, acrylic-modified silicone and the like.
Amino acids include amino acids and acylated amino acids. Examples of amino acids include proline, hydroxyproline, alanine, glycine, sarcosine, lysine, aspartic acid, glutamic acid and the like, and salts thereof are included. The fatty acid constituting the acyl group of the acylated amino acid is preferably a fatty acid having 1 to 23 carbon atoms, more preferably a fatty acid having 8 to 20 carbon atoms, and among them, stearoyl glutamic acid, lauroyl aspartic acid, lysine dilauroyl glutamic acid, and the like. Lauroyl lysine is more preferred. Examples of these salts include Na, Ca, Al, Mg, Zn, Zr and Ti salts.

In the component (A), the mass ratio (A-1) / (A-2) of the component (A-1) to the component (A-2) causes the appearance of the cosmetic to have streaks and unevenness derived from the pigment. 0.4 or more is preferable, and 0.6 or more is preferable because it suppresses the appearance color of the cosmetic and matches the applied color, and also suppresses the feeling of the lipstick being hard when the cosmetic is applied to the lips. The above is more preferable, 2 or more is further preferable, 100 or less is preferable, 50 or less is more preferable, and 30 or less is further preferable. Further, in the component (A), the mass ratio (A-1) / (A-2) of the component (A-1) to the component (A-2) is preferably 0.4 to 100, and 0. 6 to 50 is more preferable, and 2 to 30 is even more preferable.

As the component (A), two or three or more kinds can be used, and the content is 0.01 in the whole composition from the viewpoint of uniformly dispersing in the oil component and obtaining the coloring power required for cosmetics. It is 7% by mass or more, preferably 0.1% by mass or more, more preferably 0.2% by mass or more, 20% by mass or less, preferably 15% by mass or less, and more preferably 8% by mass or less. The content of the component (A) is 0.01 to 20% by mass, preferably 0.1 to 15% by mass, and more preferably 0.2 to 8% by mass in the total composition.

The component (B) is a hydrocarbon oil having an average molecular weight of 800 to 4000.
The average molecular weight is preferably 900 to 3000, more preferably 900 to 2000, from the viewpoint of dispersing the hydrophobized coloring pigment of the component (A) in the oil component and making it adhere to the lips and skin. Further, a liquid one is preferable.
Here, the average molecular weight is obtained as a number average molecular weight (in terms of polystyrene) using a GPC (gel permeation chromatography) measuring device manufactured by Shimadzu.

The hydrocarbon oil having an average molecular weight of the component (B) of 800 to 4000 may be any oil used in ordinary cosmetics, for example, heavy liquid isoparaffin, polybutene, polyisobutene, hydrogenated polyisobutene, hydrogenated polydecene and the like. Examples include straight-chain or branched hydrocarbon oils. Of these, hydrogenated polyisobutene is preferably contained because it feels soft when applied to the lips and fits well on the lips.

Commercially available products of component (B) include Idemitsu Polybutene 2000H with a diet (average molecular weight 2900), Idemitsu Polybutene 300H (average molecular weight 1330) (all manufactured by Idemitsu Kosan Co., Ltd.), and purified polybutene HV-100F (SB) (average molecular weight 940). ) (Nippon Natural Products Co., Ltd.), Polybutene 30N (average molecular weight 1350), Polybutene 200N (average molecular weight 2650) (above, manufactured by Nichiyu Co., Ltd.), Nisseki Polybutene Grade HV-300 (Average Molecular Weight 1400) Nisseki Polybutene Grade HV -1900 (average molecular weight 2900) (above, JX Nikko Nisseki Energy Co., Ltd.), Pearl Ream 18 (average molecular weight 1000), Pearl Ream 24 (average molecular weight 1350), Pearl Ream 46 (average molecular weight 2650) (above, Nichiyu) (Manufactured by the company) and the like.

As the component (B), one kind or two or more kinds can be used, and the hydrophobized colored pigment of the component (A) is dispersed in the oil, and the feel when applied to the lips is soft, and the lips are touched. From the viewpoint of familiarity, the content is 2% by mass or more, preferably 3% by mass or more, more preferably 4% by mass or more, 50% by mass or less, and preferably 40% by mass or less in the entire composition. More preferably, it is 30% by mass or less. The content of the component (B) is 2 to 50% by mass, preferably 3 to 40% by mass, and more preferably 4 to 30% by mass in the total composition.

In the present invention, the mass ratio (B) / (A) of the component (B) to the component (A) suppresses the formation of streaks and unevenness derived from the pigment on the appearance of the cosmetic, and the appearance color and application of the cosmetic. 0.1 or more is preferable, 0.2 or more is more preferable, and 0.5 or more is preferable from the viewpoint of not only matching the colors but also suppressing the feeling of the lipstick from feeling hard when the cosmetic is applied to the lips. More preferably, 150 or less is preferable, 40 or less is more preferable, and 10 or less is further preferable. The mass ratio (B) / (A) of the component (B) to the component (A) is preferably 0.1 to 150, more preferably 0.2 to 40, and even more preferably 0.5 to 10.

The component (C) is an ester oil having a viscosity at 20 ° C. of 1000 mPa · s or more.
The viscosity at 20 ° C. is preferably 1300 to 500,000 mPa · s, more preferably 1500 to 500,000 mPa · s, from the viewpoint of excellent adhesion to lips and skin and matching the appearance color of the cosmetic with the applied color.
Here, the viscosity at 20 ° C. is measured by a B-type viscometer (manufactured by Toki Sangyo Co., Ltd., TVB-10 type, measurement conditions: rollers and rotation speed are appropriately selected, measurement time: 1 minute).

Examples of the ester oil in which the viscosity of the component (C) at 20 ° C. is 1000 mPa · s or more include polyglyceryl diisostearate (viscosity at 20 ° C. 1160 mPa · s) and di (phytosteryl / octyldodecyl) lauroyl glutamate (phytosteryl / octyldodecyl) at 20 ° C. Viscosity 1650 mPa · s), (isostearic acid / sebacic acid) ditrimethylolpropane oligoester (viscosity at 20 ° C. 2380 mPa · s), diisostearyl malate (viscosity at 20 ° C. 5500 mPa · s), polyglyceryl-3 diisostearate (Visibility at 20 ° C. 4500 mPa · s), Polyglyceryl monoisostearate (viscosity 6540 mPa · s at 20 ° C.), Polyglyceryl-2 triisostearate (viscosity 35210 mPa · s at 20 ° C.), Dipentaerythrityl tripolyhydroxystearate (20) Viscosity at ℃ 22500 mPa · s), Dipentaerythrityl hexaisononanoate (viscosity at 20 ° C. 1900 mPa · s), Dipentaerythrityl pentaisostearate (viscosity at 20 ° C. 347,000 mPa · s), Dipentaerythrityl tetraisostearate (viscosity at 20 ° C. 390000 mPa · s) -S), triisostea (viscosity at 20 ° C., 13890 mPa · s) and the like.

Commercially available products of ingredient (C) include Eldu PS-203 (manufactured by Ajinomoto Healthy Supply Co., Ltd.), Cosmol 222, Cosmol 41V, Cosmol 42V, Cosmol 43N, Saracos DT-318S, Saracos WO-6, Saracos 3318, Saracos DP- 518N (above, manufactured by Nisshin Oillio Group), High Lucent DPIN6, Resolex PGIS21, Resolex PGIS32, High Marate DIS (above, manufactured by Higher Alcohol Industry Co., Ltd.) and the like can be mentioned.

The component (C) can be used alone or in combination of two or more, and is contained from the viewpoint that the component (A) is uniformly and well dispersed, the adhesion to the lips and the skin is excellent, and a good feeling of use is obtained. The amount is 1% by mass or more, preferably 5% by mass or more, more preferably 10% by mass or more, 40% by mass or less, preferably 35% by mass or less, and more preferably 30% by mass or less in the total composition. .. The content of the component (C) is 1 to 40% by mass, preferably 5 to 35% by mass, and more preferably 10 to 30% by mass in the total composition.

In the present invention, the mass ratio (B) / (C) of the component (B) to the component (C) is 0 because it has excellent adhesion to the lips and skin and matches the appearance color and the application color of the cosmetic. 0.05 or more is preferable, 0.1 or more is more preferable, 0.15 or more is further preferable, 10 or less is preferable, 5 or less is more preferable, and 2 or less is further preferable. The mass ratio (B) / (C) of the component (B) to the component (C) is preferably 0.05 to 10, more preferably 0.1 to 5, and even more preferably 0.15 to 2.

The lip cosmetic of the present invention can further contain (D) a solid hydrocarbon wax at 25 ° C. "Solid at 25 ° C" refers to a solid showing the properties of a solid at 25 ° C and having a melting point of 60 ° C or higher.
Examples of such hydrocarbon waxes include mineral waxes, petroleum waxes and synthetic hydrocarbons, preferably ceresin, microcrystalline wax, paraffin wax, polyethylene wax and synthetic hydrocarbon wax, and at least microcrystalline wax is included. Is more preferable.
Commercially available products can be used as these waxes. For example, as microcrystallin wax, Multiwax W-445, W-835 (all manufactured by SONNEBORN), Paracera M (manufactured by Paramelt), Hi-Mic-1045. Examples include 1070, 2045 (all manufactured by Nippon Seiko Co., Ltd.), refined microcrystallin wax (manufactured by Nikko Rika Co., Ltd.), 155 ° microwax (manufactured by Nippon Petroleum Co., Ltd.); ), Celesin wax SP-1020P (manufactured by STRAHL & PITSCH), etc .; Examples of paraffin include paraffin wax 145, 155, HNP-9 (manufactured by Nippon Seiwa Co., Ltd.); , 500, 655, 700EP, PL (NEW PHASE TECHNOLOGIES), LASH WAX P (deodorant) (Nippon Natural Products), polyethylene wax PW-655N (Toiro Pigment), etc.; Examples of the hydrogen wax include lip wax A-4 (manufactured by Nippon Natural Products Co., Ltd.).

The wax of the component (D) preferably has a melting point of 60 ° C. or higher and 140 ° C. or lower, preferably 60 ° C. or higher and 115 ° C. or lower, from the viewpoint of imparting appropriate hardness to the cosmetic product, suppressing oil seepage and imparting moisture. Is more preferable.

The wax of the component (D) preferably has a needle penetration of 100 or less at 25 ° C., and includes at least a needle penetration of 15 to 100, from the viewpoint of high durability and moisturizing performance of the coating film. Is more preferable.
Here, the degree of needle insertion was such that the specified needle (needle mass 2.5 ± 0.02 g, needle holder mass 47.5 ± 0.02 g) was applied to the wax sample maintained at 25 ± 0.1 ° C. The weight mass (mass 50 ± 0.05 g) measures the length of needle insertion in 5 seconds, and the value obtained by multiplying the needle insertion distance (mm) by 10 is used as the needle insertion degree. It is a value measured according to 5.4 (1991).

As the wax of the component (D), one kind or two or more kinds can be used, and the content is 1% by mass or more in the total composition from the viewpoint of excellent durability and moisturizing performance of the coating film. Preferably, 2% by mass or more is more preferable, 6% by mass or more is further preferable, 20% by mass or less is preferable, 18% by mass or less is more preferable, and 15% by mass or less is further preferable. The content of the component (D) is preferably 1 to 20% by mass, more preferably 2 to 18% by mass, and even more preferably 6 to 15% by mass in the total composition.

The lip cosmetic of the present invention can further contain a coloring pigment other than the component (A). Examples of the coloring pigment include those exemplified in the component (A), which have not been treated or have been hydrophilized.
The content of the coloring pigments other than the component (A) is preferably 1% by mass or less in the total composition, from the viewpoint of suppressing the formation of streaks and unevenness derived from the pigments on the appearance of the cosmetic. 5% by mass or less is more preferable, and 0.1% by mass or less is further preferable.

Further, the mass ratio of the hydrophobized coloring pigment of the component (A) to the total of the hydrophobized coloring pigment of the component (A) and the coloring pigment other than the component (A) (hydrophobication treatment of the component (A)). The colored pigment / (colored pigment in which the hydrophobic treatment of the component (A) + the colored pigment other than the component (A))) suppresses the formation of streaks and unevenness derived from the pigment on the appearance of the cosmetic. , 0.9 or more is preferable, 0.95 or more is more preferable, and 0.97 or more is further preferable.

In addition to the above-mentioned components, the lip cosmetics of the present invention further include components used in ordinary cosmetics, such as oil components other than the above, waxes other than the above, surfactants, lower alcohols, polyhydric alcohols, and polymers. Compounds, UV absorbers, antioxidants, fragrances, preservatives, pH regulators, blood circulation promoters, anti-inflammatory agents, cold sensitizers, bactericides, skin activators, moisturizers, pearl pigments, lame, dyes, water, etc. Can be contained.

The lip cosmetic of the present invention can be produced by a usual method, and can be either solid or non-solid. Further, it can be used as a lipstick, lip balm, lip gloss, lip liner, etc., and is suitable as a stick lipstick or a liquid lipstick.

Examples 1 to 5 and Comparative Examples 1 to 4
When lip cosmetics (stick lipsticks) with the composition shown in Table 1 are manufactured, the appearance of the cosmetics is less likely to cause streaks and unevenness derived from pigments, the appearance color matches the applied color, and the cosmetics are applied to the lips. The feel was evaluated. The results are also shown in Table 1.

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

(Evaluation methods)
(1) Difficulty of pigment-derived streaks and unevenness in the appearance of cosmetics:
Ten specialized panelists visually evaluated the difficulty of pigment-derived streaks and unevenness on the appearance of each stick lipstick according to the following criteria. The results are shown by the total score of 10 specialized panelists.
4; There is no streak or unevenness derived from the pigment.
3; There is almost no streak or unevenness derived from the pigment.
2; There are some streaks and unevenness derived from pigments.
1; There are streaks and unevenness derived from pigments.

(2) Match between appearance color and coating color:
When 10 professional panelists applied each stick lipstick to their lips, the appearance and color of the lipstick were evaluated according to the following criteria. The results are shown by the total score of 10 specialized panelists.
4; The appearance of the lipstick and the applied color match.
3; The appearance of the lipstick and the applied color are almost the same.
2; The appearance of the lipstick and the applied color are slightly the same.
1; The appearance of the lipstick and the applied color do not match.

(3) Feeling when applying cosmetics to lips (difficulty in feeling hardness):
Ten specialized panelists evaluated the feel of the lipstick (difficulty in feeling the hardness) when each stick lipstick was applied to the lips according to the following criteria. The results are shown by the total score of 10 specialized panelists.
4; The lipstick does not feel hard.
3; The lipstick feels slightly hard.
2; The lipstick feels a little hard.
1; The lipstick feels hard.

Examples 6-8
Lip cosmetics (stick lipsticks) having the compositions shown in Table 2 were produced in the same manner as in Examples 1 to 5.
All of the obtained lip cosmetics (stick lipsticks) have no pigment-derived streaks or unevenness in the appearance of the cosmetics, the appearance color and the application color match, and when the cosmetics are applied to the lips, the lipstick feels. It didn't feel hard.

Example 9
A lip cosmetic (liquid lipstick) having the composition shown in Table 3 was produced.
The obtained lip cosmetic (liquid lipstick) has no pigment-derived streaks or unevenness in the appearance of the cosmetic, the appearance color and the application color match, and when the cosmetic is applied to the lips, the lipstick feels hard. It wasn't.

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

Claims (4)

The following components (A), (B) , (C) and (D) :
(A) (A-1) Color pigment treated with alkylalkoxysilane and (A-2) Color pigment treated with one or more selected from (A-2) alkoxytitanium alkylate treatment, silicone treatment and amino acid treatment. The hydrophobized colored pigment 0.01 , wherein the mass ratio (A-1) / (A-2) of the component (A-1) to the component (A-2) is 0.4 to 100. ~ 20% by mass,
(B) Hydrocarbon oil having an average molecular weight of 800 to 4000, 2 to 50% by mass,
(C) Ester oil having a viscosity at 20 ° C. of 1300 to 500,000 mPa · s 1 to 40% by mass ,
(D) 1 to 20% by mass of solid hydrocarbon wax at 25 ° C.
Lip cosmetics characterized by containing. Claim 1 in which the coloring pigment of the component (A) contains at least one or more selected from titanium oxide, zinc oxide, yellow iron oxide, black iron oxide, red iron oxide, synthetic organic pigments, organic pigments and lake pigments thereof. Lip cosmetics listed in. The lip cosmetic according to claim 1 or 2, wherein the component (A-1) is a colored pigment treated with triethoxycaprylylsilane. The lip cosmetic according to any one of claims 1 to 3, which is a stick lipstick.