JP2006241038A - Emulsion cosmetic - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an emulsion cosmetic reducing stickiness on feeling, stretching freshly and further making the moisture holding property of a skin well. <P>SOLUTION: This emulsion cosmetic is obtained by blending a specific modified silicone, a phospholipid, an oil agent and water. Further, the emulsion cosmetic is a water in oil type, or an O/W/O type emulsion cosmetic. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an emulsified cosmetic that has no stickiness, has a moist moisturizing feeling after use, and has good storage stability.

  Phospholipids are known as constituents of biological membranes, have a good affinity for skin, can impart moisture retention to the skin, and have been used as a highly safe cosmetic base material. On the other hand, water-in-oil emulsified cosmetics have a continuous oil phase compared to oil-in-water emulsified cosmetics, leaving an oil film with low moisture permeability on the skin surface and protecting the skin from drying for a long time. In addition, re-emulsification is less likely to occur even when contacted with water, and makeup collapse is unlikely to occur. It also has the effect of keeping relatively unstable water-soluble drugs such as water-soluble vitamins and cosmetic ingredients more stably, and even when applied on the skin, the coating film is held for a long time due to its water repellency, so beauty There is an advantage that the effect can be further sustained. For this reason, the cosmetics which mix | blended the phospholipid with the water-in-oil cosmetics are excellent in moisture retention, and the effect lasted for a long time. As a technique for blending phospholipids in a water-in-oil cosmetic, for example, Patent Document 1 discloses a water-in-oil cosmetic in which a lipophilic sorbitan surfactant and a hydrophilic nonionic surfactant are blended. No. 2 proposes a water-in-oil cosmetic that further contains a specific emulsifier.

However, when the above prior art is used, a sticky feeling derived from phospholipids and a heavy weight are felt at the time of use, and storage stability is not sufficient. In addition, even in O / W / O type cosmetics containing phospholipids (see, for example, Patent Document 3), a sticky feeling and elongation weight derived from phospholipids are felt during use, and storage stability is sufficient. There was a problem that it was not.
JP 2001-181180 A (pages 1 to 22) Japanese Patent No. 2549953 (pages 1 to 10) JP-A-3-47108 (pages 1 to 9)

  As a result of intensive studies to solve the above problems, the present inventor has reduced the stickiness on the touch by blending a specific silicone compound with a phospholipid, an oil agent, and water, and also has a refreshing and spreading effect. It has been found that the moisture retention is good and the storage stability of the cosmetic is good, and the present invention has been completed.

That is, the present invention
(A) Silicone compound represented by the following general formula (1)

[Wherein, l is an integer of 1 ≦ l ≦ 100, m is an integer of 1 ≦ m ≦ 15, n is an integer of 1 ≦ n ≦ 15, R1 is a hydrogen atom or a hydrocarbon group having 1 to 30 carbon atoms, a Is an integer of 0 ≦ a ≦ 15, b is an integer of 2 ≦ b ≦ 200, c is an integer of 0 ≦ c ≦ 200, and b + c is an integer of 3 to 200.
R2 represents the following general formula (2)

Wherein g is an integer of 1 ≦ g ≦ 5, h is an integer of 0 ≦ h ≦ 100, and R3 is a hydrogen atom or a hydrocarbon group having 1 to 30 carbon atoms. ]
(B) phospholipids,
(C) Oil agent (d) It is related with the emulsified cosmetics which mix | blend water. Furthermore, the present invention relates to an emulsified cosmetic characterized by containing cholesterol and / or phytosterol as the component (e).

  According to the present invention, the use of the cosmetic composition of the present invention provides excellent skin moisturizing properties and maintains its effect over a long period of time. it can. Furthermore, since the storage stability of cosmetics is also good, consumers can use effective cosmetics for a long time.

  Hereinafter, the configuration of the present invention will be described in detail.

  The silicone compound of component (a) used in the present invention is used as an emulsifier for emulsified cosmetics, and is formulated for the purpose of improving the feeling of use such as storage stability, reducing the stickiness of the cosmetics, and imparting a fresh feel. Is done.

  The silicone compound of component (a) used in the present invention is represented by the following general formula (1).

  In general formula (1), l is an integer 1 ≦ l ≦ 100, m is an integer 1 ≦ m ≦ 15, n is an integer 1 ≦ n ≦ 15, R1 is a hydrogen atom or a hydrocarbon having 1 to 30 carbon atoms. It is a group.

  a is an integer of 0 ≦ a ≦ 15, b is an integer of 2 ≦ b ≦ 200, c is an integer of 0 ≦ c ≦ 200, b + c is an integer of 3 to 200, and b + c is an integer of 3 to 200 is there. From the viewpoint of storage stability, a is preferably an integer of 1 ≦ a ≦ 15, b is an integer of 5 ≦ b ≦ 100, c is an integer of 0 ≦ c ≦ 100, and b + c is an integer of 5 to 100.

  In the following general formula (2), g is 1 ≦ g ≦ 5, h is 0 ≦ h ≦ 100, and R3 is a hydrogen atom or a hydrocarbon group having 1 to 30 carbon atoms.

  The silicone compound of component (a) used in the present invention is synthesized by the method described in JP-A-2001-39819.

  The mass average molecular weight of the silicone compound represented by the general formula (1) is not particularly limited, but is preferably 500 to 200,000, and more preferably 1,000 to 100,000. In addition, as an emulsifier or emulsification aid for a water-in-oil emulsified cosmetic or an O / W / O emulsified cosmetic, those having an HLB of 2.5 to 6 are preferably used. As a commercial item, KF-6028 (made by Shin-Etsu Chemical Co., Ltd.) etc. are mentioned.

  The amount of component (a) is 0.1 to 10% by weight (hereinafter, mass% is simply indicated as “%”), preferably 0.5 to 5% in the emulsified cosmetic of the present invention. Within this range, an emulsified cosmetic having good storage stability and no stickiness can be obtained.

  The phospholipid which is the component (b) of the present invention is blended as an emulsifier and for the purpose of a moisturizing effect after use.

  Various phospholipids, specifically, phosphatidylcholine, phosphatidylethanolamine, phosphatidylserine, phosphatidylglycerol, phosphatidylinositol, sphingophospholipid and the like can be used as the phospholipid which is the component (b) of the cosmetic of the present invention. . Moreover, it replaces with these and can use the composition containing these, ie, soybean lecithin, egg yolk lecithin, or these hydrogenated substances. These phospholipids may be used by appropriately selecting one kind or two or more kinds as necessary.

  The phospholipid used in the present invention preferably has a phosphatidylcholine (hereinafter abbreviated as “PC”) content in the phospholipid of 70% or more from the viewpoint of stability over time, and contains an acidic phospholipid. It is more preferable. Specific examples of acidic phospholipids include phosphatidylglycerol, phosphatidylinositol, and phosphatidic acid. These effects can be obtained by blending alone or by blending phospholipids containing acidic phospholipids such as soybean lecithin. The mass ratio of PC to acidic phospholipid in the phospholipid is not particularly limited, but the ratio of PC to acidic phospholipid is preferably 99.9: 0.1 to 95: 5.

  Furthermore, in the emulsified cosmetic of the present invention, the phospholipid may form a lipid bilayer or a vesicle (liposome) closed by the lipid bilayer. The method for forming the lipid bilayer membrane is not particularly limited as long as it is a generally known method, and examples thereof include a method using ultrasonic waves and a method using a homogenizer under pressure.

  Moreover, the compounding quantity of a component (b) is although it does not specifically limit, 0.01 to 5% is preferable from a viewpoint of the favorable moisturizing feeling after use, and 0.1 to 2% is more preferable.

  In this invention, a component (c) oil agent is mix | blended in order to provide an emollient feeling to skin.

  The component (c) used in the present invention is a hydrocarbon, regardless of the origin of animal oil, vegetable oil, synthetic oil, etc. commonly used in cosmetics and the properties of solid oil, semi-solid oil, liquid oil, volatile oil, etc. , Oils and fats, waxes, hardened oils, ester oils, fatty acids, silicone oils, fluorinated oils, lanolin derivatives, oily gelling agents, lipophilic surfactants, oil-soluble UV absorbers And the like. Specifically, hydrocarbons such as liquid paraffin, squalane, petrolatum, polyisobutylene, polybutene, paraffin wax, ceresin wax, microcrystalline wax, montan wax, and Fischer trops wax, olive oil, castor oil, jojoba oil, mink oil , Vegetable oils such as macadamian nut oil, beeswax, carnauba wax, candelilla wax, waxes such as gay wax, owl, cetyl isooctanoate, isopropyl myristate, isopropyl palmitate, octyldodecyl myristate, glyceryl trioctanoate, Polyglyceryl diisostearate, diglyceryl triisostearate, glyceryl tribehenate, pentaerythritol ester of rosin acid, neopentyl glycol dioctanoate, Esters of terol fatty acid esters, N-lauroyl-L-glutamic acid di (cholesteryl, behenyl, octyldodecyl), fatty acids such as stearic acid, lauric acid, myristic acid, behenic acid, isostearic acid, oleic acid, rosin acid, Low polymerization dimethylpolysiloxane, high polymerization dimethylpolysiloxane, methylphenylpolysiloxane, decamethylcyclopentasiloxane, octamethylcyclotetrasiloxane, cross-linked organopolysiloxane, silicones such as fluorine-modified silicone, perfluoropolyether, Fluorine oils such as perfluorodecane and perfluorooctane, lanolin, lanolin acetate, lanolin fatty acid isopropyl, lanolin derivatives such as lanolin alcohol, dextrin fatty acid ester, sucrose Oily gelling agents such as acid esters, starch fatty acid esters, 12-hydroxystearic acid, aluminum stearate, calcium stearate, lipophilic surfactants such as glyceryl monostearate, sorbitan tristearate, sorbitan sesquioleate, Examples include oil-soluble ultraviolet absorbers such as ethyl paraaminobenzoate, 2-ethylhexyl paramethoxycinnamate, 4-tert-butyl-4′-methoxydibenzoylmethane, oxybenzone, and the like. These can be used in combination.

  Although the compounding quantity of the oil agent of a component (c) is not specifically limited, Preferably it is 2 to 60%, More preferably, it is 5 to 50%.

  The component (d) water used in the present invention is an essential component for constituting an emulsifier type, and imparts a fresh feel during and after use. The amount of the component (d) water varies depending on the form of the cosmetic and is not particularly limited, but is preferably 10 to 99%, and more preferably 15 to 90%.

  In the emulsified cosmetic of the present invention, when cholesterol and / or phytosterol is further added as the component (e), the storage stability is further improved.

  The amount of component (e) used in combination with component (b) is not particularly limited, but from the viewpoint of stability over time, the mass ratio of phospholipid: cholesterol and / or phytosterol is 1: 0. It is preferable that it is 1-1: 1.

  In addition to the above-described components, the cosmetics of the present invention can be blended with components usually used in cosmetics within a range that does not impair the effects of the present invention. Examples of these components include surfactants other than component (a) and component (b), aqueous components, water-soluble polymers, powders, antioxidants, ultraviolet absorbers, fragrances, preservatives, colorants, Examples include beauty agents.

  The dosage form of the emulsified cosmetic of the present invention is not particularly limited, and examples thereof include an oil-in-water type, a water-in-oil type, an O / W / O type, and a W / O / W type. Among them, the water-in-oil type and the O / W / O type emulsified types can remarkably obtain the effects of the present invention.

  In addition, the dosage forms of the cosmetics of the present invention obtained as described above include cosmetics, lotions, emulsions, creams, packs, facial cleansers, hair styling agents, shaving lotions, sunscreens, and other basic cosmetics and foundations. Makeup cosmetics such as white powder, blusher, concealer, eye shadow, eyeliner, eyebrow, lipstick and the like. Among them, basic cosmetics such as beauty essences, lotions, milky lotions, creams, packs, facial cleansers, hair styling agents, shaving lotions, sunscreens, etc. can be obtained remarkably.

  EXAMPLES Next, although an Example is given and this invention is demonstrated still in detail, this invention is not limited at all by these.

Examples 1 to 11 and Comparative Examples 1 to 6: O / W / O type skin care creams O / W / O type skin care creams having the composition shown in Table 1 below were prepared, (1) storage stability, and (2) use. Feeling (freshness, non-stickiness) (3) Evaluation items of the moisturizing effect were evaluated by the following methods, and the results are shown in Tables 1 and 2.

(Production method)
A. Components 1 to 7 are uniformly mixed and dissolved at 70 ° C.
B. Ingredients 8-9 are heated to 70 ° C.
C. Add B to A and emulsify.
D. Cool C to room temperature.
E. Ingredients 10-16 are mixed uniformly at room temperature.
F. Disperse D into E.

[Evaluation method for evaluation item (1)]
It set to a 40 degreeC thermostat, and the external appearance change was observed visually.
[Evaluation]
◎: Separation is not observed in 3 months ○: Separation is observed in 1 month △: Separation is observed in 2 weeks ×: Separation is observed in 1 day

[Evaluation method for evaluation item (2)]
Ten professional evaluation panels evaluated the usability (freshness and non-stickiness) when applied to the skin based on the following criteria, and further judged from the average score.
[Evaluation]
5 points: very good usability 4 points: good usability 3 points: normal 2 points: not very good usability 1 point: no good usability was obtained [Judgment]
◎: Average point 4.5 points or more ○: Average point 3.5 points or more and less than 4.5 points △: Average point 2.5 points or more and less than 3.5 points ×: Average point less than 2.5 points

[Evaluation method for evaluation item (3)]
10 professional evaluation panels evaluated whether or not the moisturizing effect was obtained after application to the skin based on the following criteria, and further judged from the average score.
[Evaluation]
5 points: very moisturizing effect 4 points: moisturizing effect 3 points: normal 2 points: not much moisturizing effect 1 point: no moisturizing effect [Evaluation]
◎: Average point 4.5 points or more ○: Average point 3.5 points or more and less than 4.5 points △: Average point 2.5 points or more and less than 3.5 points ×: Average point less than 2.5 points

  As is clear from the results in Table 1 above, the O / W / O type skin care creams of Examples 1 to 11 are superior in storage stability, fresh and non-sticky when applied, and have a moisturizing effect as compared with Comparative Examples. It was an excellent cream.

Example 12 Water-in-oil foundation (component) (%)
1. Hydrogenated soybean phospholipid (PC content 70%) 0.5
2. Phytosterol 0.1
3. Glycerin 2.0
4.1,3-butylene glycol 2.0
5. Purified water residue 6. Sodium lactate 2.0
7). Methyl paraoxybenzoate 0.3
8). Ethanol 3.0
9. Silicone compound (Note 1) 2.0
10. Diglyceryl diisostearate 1.0
11. 2-Ethylhexyl paramethoxycinnamate 3.0
12 Glyceryl tri-2-ethyl hexate 5.0
13. Rosin acid pentaerythrit 0.1
14 Dextrin palmitate (Note 4) 0.5
15. Inulin stearate (Note 5) 0.5
16. Dimethyl distearyl ammonium hectorite 1.0
17. Silicone-treated titanium oxide 10.0
18. Silicone treated bengara 0.3
19. Silicone-treated yellow iron oxide 1.5
20. Silicone-treated black iron oxide 0.05
21. Silicone-treated fine particle titanium oxide 2.0
22. Nylon powder 2.0
23. Decamethylcyclopentasiloxane 18.0
(Note 4): Leopard KL (manufactured by Chiba Flour Mills)
(Note 5): Leopard ISK (Chiba Flour Mills)

(Production method)
A: Heat components 1 to 4 to 75 ° C.
B: Component 5 is heated to 75 ° C.
C: After adding and mixing B with A, cool to room temperature.
D: Components 6 to 8 are added to C and mixed.
E: Components 9 to 23 are mixed and dispersed with a roll mill.
F: E was added and mixed with stirring to obtain a water-in-oil foundation.

  The water-in-oil type foundation of Example 12 was a cream having excellent storage stability, freshness during application, no stickiness, and excellent moisturizing effect.

Example 13 W / O Skin Care Cream (Ingredient) (%)
1. Hydrogenated soybean phospholipid (PC content 70%) 0.5
2. Glycerin 10.0
3. 1,3-butylene glycol 10.0
4). Phytosterol 0.1
5. Purified water remaining amount 6. Sodium lactate 2.0
7). Silicone compound (Note 1) 2.0
8). Dipolyhydroxystearic acid Polyethylene glycol (Note 4) 1.0
9. Decamethylcyclopentasiloxane 15.0
10. Tri-2-ethylhexane sangglyceryl 5.0
11. Propylene glycol dicaprate 5.0
12 Dimethyl distearyl ammonium hectorite 0.5
13. Ethanol 0.5
(Note 4) ARLACEL P135 (manufactured by Unikema)

(Production method)
A. Components 1 to 4 are uniformly mixed and dissolved at 70 ° C.
B. Ingredients 5 and 6 are heated to 70 ° C.
C. Add B to A and mix.
D. Cool C to room temperature.
E. Ingredients 7-13 are mixed uniformly at room temperature.
F. Disperse D into E.

  The W / O type skin care cream of Example 13 had excellent storage stability, was fresh at the time of application, had no stickiness, and had an excellent moisturizing effect.

Example 14 O / W / O type moisturizing serum (component) (%)
1. Hydrogenated soybean phospholipid (PC content 90%) 2.0
2. Glycerin 5.0
3. Dipropylene glycol 10.0
4). Jojoba oil 3.0
5. Macadamia nut oil fatty acid phytosteryl 0.5
6). Cholesterol 0.5
7). Purified water remaining amount 8. Ethanol 5.0
9. L-ascorbic acid magnesium phosphate 2.0
10. Preservative appropriate amount11. Silicone compound (Note 1) 0.5
12 Polyether-modified silicone (Note 2) 1.0
13. Decamethylcyclopentasiloxane 8.0
14 Dimethylpolysiloxane 5.0
15. Perfume

(Production method)
A. Ingredients 1 to 6 are uniformly mixed and dissolved at 70 ° C.
B. Ingredient 7 is heated at 70 ° C.
C. Add B to A and emulsify.
D. Cool C to room temperature.
E. Add ingredients 8-10 to D and mix.
F. Ingredients 11-15 are mixed uniformly at room temperature.
G. Disperse E into F.

  The W / O type skin care cream of Example 14 was excellent in storage stability, fresh at the time of application, not sticky, and excellent in moisturizing effect.

Claims (3)

The following components (a) to (d):
(A) Silicone compound represented by the following general formula (1)
[Wherein, l is an integer of 1 ≦ l ≦ 100, m is an integer of 1 ≦ m ≦ 15, n is an integer of 1 ≦ n ≦ 15, R1 is a hydrogen atom or a hydrocarbon group having 1 to 30 carbon atoms, a Is an integer of 0 ≦ a ≦ 15, b is an integer of 2 ≦ b ≦ 200, c is an integer of 0 ≦ c ≦ 200, and b + c is an integer of 3 to 200.
R2 represents the following general formula (2)
Wherein g is an integer of 1 ≦ g ≦ 5, h is an integer of 0 ≦ h ≦ 100, and R3 is a hydrogen atom or a hydrocarbon group having 1 to 30 carbon atoms. ]
(B) phospholipids,
(C) Oil agent (d) Emulsified cosmetic characterized by mix | blending water.   The emulsified cosmetic according to claim 1, wherein the dosage form is a water-in-oil type or an O / W / O type.   Furthermore, cholesterol and / or phytosterol are mix | blended as a component (e), The emulsified cosmetics of Claim 1 or Claim 2 characterized by the above-mentioned.