JPH04178316A - Emulsion cosmetic - Google Patents

Abstract

PURPOSE:To provide an emulsion cosmetic containing an oleophilic polyglycerol condensed hydroxyfatty acid ester, causing little skin irritation, giving excellent feeling to the skin and having high stability. CONSTITUTION:The objective cosmetic contains 0.1-10wt.% of an oleophilic polyglycerol condensed hydroxyfatty acid ester of formula I [at least one R<1> is condensed ricinoleyl of formula II (r is 3-6) or condensed 12-hydroxystearic acid residue of formula III (s is 3-6) and the others are H; q is 2-10], 1-40wt.% of an amphiphatic lipid (e.g. higher fatty acid) and 20-90wt.% of water and other water-soluble solvents in total. The above components are properly compounded with conventional cosmetic additives such as oil, emulsifier, powder, humectant, ultraviolet absorber, colorant and perfumery and formed in a desired form by conventional method. Excellent humectant effect on the skin can be attained by the addition of the amphiphatic lipid which is an intercellular lipid.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a novel emulsified cosmetic containing a lipophilic polyglycerin condensed hydroxy fatty acid ester, which is stable and less irritating to the skin.

[Conventional technology]

Since emulsified cosmetics form a film on the skin surface, they have excellent properties such as good adhesion to the skin and long-lasting makeup, and have been widely used in the past.

On the other hand, since amphiphilic lipids, which are intercellular lipids such as cholesterol and ceramide, have a moisturizing effect, attempts have been made to incorporate them into various cosmetics.

[Problem to be solved by the invention]

However, emulsified cosmetics need to maintain their emulsified state stably, and in order to obtain an emulsified system with good stability over time, a combination of an oil agent and an emulsifier is important. In particular, when incorporating amphiphilic lipids such as intercellular lipids, using common emulsifiers is unstable and has a very poor appearance, making it difficult to obtain a suitable emulsifying system.

Therefore, there has been a desire for emulsified cosmetics that stably contain amphipathic lipids.

[Means for solving the problem] □ Under these circumstances, the present inventors conducted intensive research and found that by using a specific lipophilic polyglycerin condensed hydroxy fatty acid ester, an amphipathic lipid can be stably contained. They discovered that emulsified cosmetics can be obtained and completed the present invention.

That is, the present invention provides the following components (A) to (C) (A) general formula (I) OR'R'0-eC)I2-CH-CH2-0-)-vR'
(I) [In the formula, R1 may be the same or different, and at least one is of the following formula (n) H(l-0-CH-CLCH=CH-(CH,), -C
+(If)(C11,), [:H.

(In the formula, r represents a number from 3 to 6) or a fused lysyl group represented by the formula (III) Hf-
0lHf-0-CI, , -C-tr (
III)? A condensed 12-hydroxystearic acid residue represented by (CH,), CH3 (in the formula, S represents a number from 3 to 6), the remainder being a hydrogen atom, and q represents a number from 2 to 10] The present invention provides an emulsified cosmetic containing the following lipophilic polyglycerin condensed hydroxy fatty acid ester (B) amphipathic lipid (C) water.

In the lipophilic polyglycerin condensed hydroxy fatty acid ester which is component (A) of the present invention, it is preferable that 20 to 70% of the hydroxyl groups of the polyglycerin are esterified.

These can be used alone or in combination of two or more types, and it is preferably blended in an amount of 0.1 to 10% by weight (hereinafter simply expressed as %), particularly 0.5 to 5%, in the total composition.

In the present invention, the amphipathic lipid of component (B) is a solid substance having a hydrophobic part and a hydrophilic part in the molecule, and specifically includes higher fatty acids, higher alcohols, cholesterol,
Examples include cholesterol fatty acid ester, diglyceride, phospholipid, ceramide, sugar ceramide, and ceramide-like structural substances. The ceramide-like structural substance mentioned here is
A lipid derivative that has two long-chain hydrocarbon groups and an OH group and an amide group between them, and the molecule can assume a uniplanar conformation. Such compounds include:
For example, those represented by the following general formula (IV) can be mentioned.

The following margin is R"[]CH2 ■ C) IzC) I2DH (In the formula, R2 is a straight or branched saturated or unsaturated hydrocarbon group having 10 to 26 carbon atoms, and R3 is a straight or branched saturated or unsaturated hydrocarbon group having 9 to 26 carbon atoms.
25 straight or branched saturated or unsaturated hydrocarbon groups) These amphiphilic lipids can be used alone or in combination of two or more, and the total composition contains 1.0 to 40. It is preferable to mix 0%, especially 3.0 to 20.0%.

In the emulsified cosmetic composition of the present invention, water can be blended in any amount, but in order to have a good feeling of use, i.e., less oily or sticky feeling and to improve spreadability, water must be mixed with other water-soluble solvents. 20-90% in total, especially 34-78
%, more preferably 50% or more. Here, other water-soluble solvents refer to lower alcohols or polyols such as ethanol, glycerin, sorbitol, propylene glycol, and 1,3-butylene glycol.

Further, the emulsified cosmetic composition of the present invention may contain general cosmetic oils commonly used in cosmetic compositions.

These oils are not particularly limited, but include, for example, dimethylpolysiloxane, dimethylcyclopolysiloxane,
Silicone oils such as methylphenylpolysiloxane, methylhydrodienepolysiloxane, octamethylcyclotetrasiloxane, octamethylcyclopentasiloxane, decamethylcyclopentasiloxane; avocado oil,
Vegetable oils such as camellia oil, macadamia nut oil, olive oil, and jojoba oil; Fatty acids such as oleic acid and isostearic acid; Alcohols such as hexadecyl alcohol and oleyl alcohol; Cetyl 2-ethylhexanoate, 2-ethylhexyl valmitate, and myristic acid. 2-octyldodecyl acid, neopentyl glycol di-2-ethylhexanoate, lycerol tri-2-ethylhexanoate, 2-octyldodecyl oleate, isopropyl myristate, glycerol triisostearate, tri-2
- Esters such as glycerol ethylhexanoate, 2-octyldodecyl oleate, isopropyl myristate, glycerol triisostearate, diglyceride 2-ethylhexanoate, glyceryl mono-2-ethylhexanoate; liquid paraffin , squalene, squalane, and other liquid hydrocarbon oils.Especially when reducing oily and sticky sensations,
Preferred examples include volatile dimethylpolysiloxane and dimethylcyclopolysiloxane.

These common oils for cosmetics can be used alone or in combination of two or more. Moreover, it is preferable that these general oils for cosmetics are blended as an oil agent in a total amount of 10 to 60%, particularly 15 to 40%, in the total composition with amphipathic lipids.

Furthermore, in the present invention, other emulsifiers may be used as necessary within a range that does not impair the effects of the present invention. Examples of such emulsifiers include glycerin fatty acid ester, sorbitan fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyethylene glycol fatty acid ester, polyoxyethylene alkyl ether, polyoxyethylene alkyl phenyl ether,
Examples include polyoxyethylene hydrogenated castor oil derivatives, alkyl glyceryl ethers, polyoxyalkylene-modified polysiloxanes, and the like. When silicone oil is used as the oil agent, it is preferable to use polyoxyalkylene-modified polysiloxane, especially the following general formula (V) [wherein R4 may be the same or different, and each represents a methyl group or a phenyl group] , R5 may be the same or different, and each represents a methyl group and a group R" (QC, H6) b(O
C2H, ), 0 (CH2) p-(R' is a hydrogen atom or an alkyl group having 1 to 12 carbon atoms, p is a number of 1 to 5, a and h are average values, and each is a number of 0 to 35 )
or phenyl group, m and n are average values, m is 1 to 20
0 and n represents a number from 0 to 50] is preferable. These emulsifiers can be used alone or in combination of two or more.

The emulsified cosmetic composition of the present invention may further contain 0 to 40% of other components commonly used in cosmetic compositions, as appropriate, within a range that does not impair the effects of the present invention.

Other components include powder, humectants, solid fats, ultraviolet absorbers, alcohols, chelating agents, pH adjusters, preservatives, thickeners, pigments, fragrances, and the like.

By blending 10 to 40%, preferably 15 to 30%, of these powders in cosmetics, a liquid or cream foundation can be obtained.

Examples of powders include powders commonly used in cosmetics, such as extender pigments such as talc, mica, kaolin, and sericite;
Inorganic pigments such as titanium oxide, zinc oxide, iron oxide, and ultramarine; titanium-mica-based var pigments; and Blue No. 404 and Red 20
Examples include organic pigments such as No. 2 and Yellow No. 401, and hydrophobized products of these pigments, which can be used alone or in combination of two or more.

The emulsified cosmetic composition of the present invention can be manufactured according to a conventional method.

Cosmetics that are the subject of the present invention are not limited to general skin cosmetics, but include hair cosmetics, quasi-drugs,
It includes external medicines, etc., such as face care creams or emulsions, hand and body care creams or emulsions, hair milk, creams and emulsions such as hair creams, liquid or cream-type foundations, as well as anti-inflammatory creams and insecticides. Examples include external medicines such as creams for stings.

〔Effect of the invention〕

The emulsified cosmetic of the present invention stably contains amphipathic lipids,
Moreover, it has little skin irritation and has an excellent usability. Furthermore, by incorporating intercellular lipids and the like, it has a good moisturizing effect on the skin.

〔Example〕

Next, the present invention will be further explained with reference to Examples, but the present invention is not limited thereto.

Example 1 Emulsified cosmetics having the compositions shown in Table 1 were produced and evaluated for appearance and particle size. The results are shown in Table 1.

<Evaluation method> Appearance: ○...Uniform - X...Separated into two layers Particle size: ○...Particle size uniform when observed under a microscope △...Some coarse particles were observed under a microscope It will be done.

X: Particles of various sizes are observed by R1I microscope observation.

Margin below Example 2 Moisturizing cream oil phase ingredients; (%) Jojoba oil 3.0 Liquid isoparaffin 4.0 Ceramide
10.0 Water composition; Magnesium chloride 0.4 Glycerin 20.0 Methyl paraben
0.1 fragrance 0.1 total
100.0 The above water composition was heated and mixed and maintained at 70°C.

The above oil phase component was similarly dissolved and dispersed by heating at 70°C.

The above water phase was added to this oil phase and emulsified using an emulsifier. The emulsion was cooled to a final temperature of 25° C. using a heat exchanger to obtain a moisturizing cream (Product 5 of the present invention).

Example 3 Suncare cream oil phase components; (%) Dimethylpolysiloxane (5cs) 7.0 Methylphenylpolysiloxane 5,0 Cholesteryl isostearate 7.0 Octyl methoxycinnamate 3.0 Oxybenzone 1.0 Water composition Minutes: Potassium chloride 0.7 Glycerin 2.0 1.3-Butylene glycol 2.0 Methylparaben
0.1 fragrance
0.1 purified water
Balance powder ingredients; total 1
00.0 The above water components were heated and mixed and maintained at 70°C.

The above oil phase component was similarly heated and dissolved at 70°C, and then the powder component was added and dispersed. The above water phase was added to this oil phase/powder and emulsified using an emulsifier. The emulsion was cooled to a final temperature of 25° C. using a heat exchanger to obtain a sun care cream (product 6 of the present invention).

Example 4 Creamy foundation oil phase component;
(%) Liquid paraffin
5.0 dimethylpolysiloxane (1
0cs) 3.0 cholesterol
7.0 Methyl phenyl polysiloxane
2.0 Water composition; Magnesium sulfate 0.7 Glycerin 5.0 Methyl paraben
0.1 Fragrance 0.1 Purified water Balance powder ingredients; Fine particle titanium oxide 5.0 Sericite 2.0 Talc
3.0 Bengala
0.4 iron oxide yellow
0.7 total
100.0*2: PH3-BD
(manufactured by Hanhon Yakuhin Kogyo ■) Example 3 except for using the above ingredients
In the same manner as above, a cream foundation (7 pieces of the present invention) was obtained.

As described above, the present invention products 5 to 7 manufactured in Examples 2 to 4 were all emulsified cosmetics with excellent stability and feel in use.

Procedural amendment @ (spontaneous) November 8, 1991 1990 Patent Application No. 305441 2 Name of the invention Emulsified cosmetics 3, Person making the amendment Relationship to the case Applicant name (091) Kao Corporation 4, Agent Address: 1-3-6 Nihonbashi Ningyocho, Chuo-ku, Tokyo
103) Address Same as above
, -Nee B Name (7756) Patent Attorney Takano
Toshio: '2'4'' + ko'1;shi(k-]/' 6, "Detailed Description of the Invention" column 7 of the specification to be amended Contents of the amendment (1) Page 9 of the specification , the second line from the bottom says "phenyl group," [indicates a phenyl group, or at least one group R' (O
C3H6To (OC2H4), 0(CH2), -, and the remainder represents a methyl group or a phenyl group. ” he corrected.

Claims (1)

[Claims] 1. The following components (A) to (C) (A) General formula (I) ▲There are mathematical formulas, chemical formulas, tables, etc.▼(I) [In the formula, R^1 may be the same or different. A fused ricinoleyl group or formula (III), at least one of which is represented by the following formula (II) ▲Mathematical formula, chemical formula, table, etc.▼(II) (wherein r represents a number from 3 to 6) ▲There are mathematical formulas, chemical formulas, tables, etc.▼(III) (In the formula, s indicates a number from 3 to 6) A condensed 12-hydroxystearic acid residue, the remainder being a hydrogen atom, and q is a number from 2 to 6. An emulsified cosmetic comprising: a lipophilic polyglycerin condensed hydroxy fatty acid ester (B) an amphipathic lipid (C) water.