JPH04253903A - Emulsion-type cosmetic - Google Patents

Abstract

PURPOSE:To provide the title cosmetic excellent in long-term storage stability and fleshly sense characteristics (adaptability to the skin and dampish feeling), also with beautiful appearance of fine texture. CONSTITUTION:The objective cosmetic can be obtained by incorporating (A) a cosmetic containing an oily substance and water with (B) an alkyl glycoside and (C) a sucrose higher fatty acid ester.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention relates to emulsified cosmetics,
Specifically, the present invention relates to emulsified cosmetics with excellent emulsion stability and sensory characteristics.

0002

[Prior art and problems to be solved by the invention] In recent years,
Many studies have been conducted on emulsification technology, and as a result, emulsifiers and emulsification technology have made great progress, and emulsions with excellent stability are now being used in many fields.

Most of the emulsifiers are nonionic surfactants having a polyoxyethylene chain, anionic surfactants typified by fatty acid soaps, cationic surfactants, and amphoteric surfactants. However, emulsified cosmetics using these synthetic surfactants generally have the disadvantage that they tend to irritate the skin and hair. Furthermore, even nonionic surfactants, which are said to be the least irritating, have many problems such as poor skin compatibility due to their polyoxyethylene chains.

[0004] Against this background, nonionic alkyl glycosides that do not have polyoxyethylene chains have attracted attention. For example, JP-A-1-203036
The publication discloses "emulsified compositions and emulsified cosmetics" which are composed of alkyl glycosides and polyhydric alcohols, have good emulsion stability, and are excellent in usability. However, as a result of a detailed study of the "emulsified composition and emulsified cosmetic" according to the present invention, it has become clear that they have a drawback in that long-term storage stability is not necessarily sufficient.

[0005] The present inventors have conducted intensive research to resolve the drawbacks of cosmetics using the above-mentioned alkyl glycosides as emulsifiers, and have found that when used in combination with sucrose higher fatty acid esters, long-term storage stability is good. The present invention has been completed based on the discovery that it is possible to obtain a material that exhibits very excellent organoleptic properties and a beautiful appearance with fine texture.

[0006] That is, an object of the present invention is to provide an emulsion-type cosmetic that has excellent emulsion stability and organoleptic properties, and exhibits fine-grained and beautiful appearance characteristics.

[0007]

[Means for Solving the Problems] The above object is achieved by an emulsified cosmetic containing an alkyl glycoside and a sucrose higher fatty acid ester in a cosmetic containing an oily substance and water.

[0008] The alkyl glycoside in the present invention is
It is composed of an alkyl group or alkenyl group having 8 to 22 carbon atoms at the terminal and a residue G derived from 1 to 5 reducing sugars having 5 to 6 carbon atoms.

Monosaccharides such as glucose, galactose, xylose, fructose,
Mannose, lyxose, apibinose, etc., and examples of disaccharides or more include maltose, xylobiose, isomantose, lactose, sucrose, raffinose, maltotriose, etc. Of these, particularly preferred raw materials are glucose, fructose, maltose, and sucrose in terms of availability and cost. In the case of an alkyl glycoside composed of two or more residues,
The binding mode of the sugar chain is 1-2, 1-3, 1-4, 1-6
Bonds as well as α-, β-pyranosidic or furanosidic linkages and any mixtures thereof are possible. Therefore, examples thereof include decyl-β-D-glycoside, tetradecyl-α-D-fructoside, dodecyl-β-D-maltoside, octadecyl-α-D-sucroside, and the like.

The amount of the alkyl glycoside blended is 0.01 to 10% by weight, preferably 0.1 to 5% by weight, based on the total amount of the cosmetic. That is, this is 0.0
If it is less than 1% by weight, the storage stability of the cosmetic will be poor; if it is more than 10% by weight, it will not be completely dissolved and will tend to separate, and the cosmetic will have a poor feel when used. This is because it is easy to do so.

The sucrose higher fatty acid ester used in the present invention is a sucrose ester with a saturated or unsaturated higher fatty acid having 8 to 22 carbon atoms. The ester degree is arbitrary, and examples thereof include monoester, diester, triester, tetraester, pentaester, and any mixture thereof. Therefore, sucrose monostearate, sucrose monooleate, sucrose monoisostearate, sucrose monopalmitate, sucrose monolaurate, sucrose distearate, sucrose dioleate, sucrose diisostearate, sucrose dipalmitate, Sucrose dilaurate, sucrose tristearate, sucrose trioleate, sucrose triisostearate, sucrose tripalmitate, sucrose trilaurate, sucrose tetrastearate, sucrose tetraoleate, sucrose tetraisostearate, Examples include single substances and mixtures of sucrose tetrapalmitate, sucrose tetralaurate, sucrose pentastearate, sucrose pentaoleate, sucrose pentaisostearate, sucrose pentapalmitate, sucrose pentalaurate, etc. However, it is not limited to these.

[0012] The blending amount of these sucrose higher fatty acid esters is 0.01-1 based on the total amount of cosmetics.
0% by weight, preferably 0.1-5% by weight. That is,
If it is less than 0.01% by weight, the storage stability of the cosmetic will be poor, while if it is more than 10% by weight, it will not be completely dissolved and will tend to separate, and the cosmetic will not feel good when used. This is because it tends to get worse.

[0013] The oily substances used in the present invention refer to oily substances in a broad sense, such as liquid paraffin, squalane,
Hydrocarbons such as vaseline and microcrystalline wax, isopropyl myristate, cetyl-2-ethylhexanoate, glyceryl-tri-2-ethylhexanoate, vitamin E acetate, vitamin A palmitate, vitamin C stearate, vitamin C Ester oils such as sulfates, waxes such as beeswax and spermaceti, avocado oil, camellia oil, macadamian nut oil, almond oil,
Rice bran oil, olive oil, castor oil, rapeseed oil, safflower oil, corn oil, wheat germ oil, soybean oil, cottonseed oil,
Vegetable oils such as tea seed oil and jojoba oil, animal oils such as turtle oil, mink oil, and egg yolk oil, cetanol, stearyl alcohol, oleyl alcohol, octyldodecanol,
Higher alcohols such as behenyl alcohol, higher fatty acids such as lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid, linoleic acid, linolenic acid, ricinoleic acid, isostearic acid, dimethyl silicone, methylphenyl silicone, cyclic Oils commonly used in cosmetics and pharmaceutical bases, such as silicone oils such as silicone, other silicone resins, and high molecular weight silicones,
One or a combination of two or more of these may be used.

[0014] The blending amount of these oily substances is 5 to 80% by weight, preferably 1% by weight based on the total amount of the cosmetic.
It is 0 to 60% by weight. That is, if it is less than 5% by weight, the storage stability of the cosmetic will be a little poor and the finish will be too refreshing for an emulsified cosmetic.On the other hand, if it is more than 80% by weight, the oil will become extremely sticky and oil will float. This is because it becomes easier to do.

[0015] The emulsified cosmetic of the present invention may also contain moisturizing agents, cosmetic medicinal ingredients, fragrances, preservatives, coloring agents, ultraviolet absorbers, astringents, synthetic surfactants, pigments (cations), if necessary. , mica, sericite, talc, yellow iron oxide, red iron oxide, titanium oxide, etc.), water-soluble natural polymers (casein soda, pectin, xanthan gum, karaya gum, locust bean gum, carrageenan, etc.) can be added.

[0016] Examples of the cosmetics of the present invention include massage creams, cleansing creams, skin creams, skin milks, foundation creams, makeup bases, hair creams, etc., but are not limited to these, and any cosmetics can be used. can be obtained.

[0017]

[Examples] The present invention will be explained in detail below with reference to Examples and Comparative Examples.

The properties of the cosmetics investigated in this example were long-term storage stability, sensory properties, and appearance properties by the following methods. (1) Long-term storage stability: The sample composition was left in a constant temperature bath at 45° C. for 1 to 6 months, and its appearance was evaluated with the naked eye. (2) Sensory characteristics: The feel at the time of application (skin feel) and the finish after application (moist feeling) were examined by three expert inspectors and comprehensively evaluated. (3) Appearance characteristics: The fineness and beauty of the texture were judged with the naked eye. In addition, the numerical values in the formulations in the examples mean weight %.

Examples 1 to 4, Comparative Examples 1 to 2; (Skin milk) A linear alkyl group having 10 carbon atoms is used as the alkyl glycoside, and decyl α-D-glycoside is glucose as the residue derived from reducing sugar. was used, and a triester of oleic acid was used as the sucrose higher fatty acid ester.

Then, components 1 to 6 in Tables 1 to 4 were uniformly mixed and dissolved at about 80°C (solution 1), and water-soluble components 7 to 10 and 12 in the table were mixed and dissolved at about 80°C. The mixture was dissolved uniformly (solution 2). Next, while stirring the above solution 2 with a homomixer, solution 1 is added and emulsified, and in the cooling process 7
Component 11 was added at 0°C, and after the temperature was lowered to 30°C, stirring was stopped.

[0021]

[Table 1]

[0022]

[Table 2]

[0023]

[Table 3]

[0024]

[Table 4]

Tables 1 to 4 show the properties of the obtained skin milk.
Shown below. As shown in this table, the skin milks of Examples 1 to 4 had good long-term storage stability, but the skin milks of Comparative Examples 1 and 2 lacking either alkyl glycoside or sucrose higher fatty acid ester. Both had problems with long-term storage stability.

Furthermore, by comparing each of the Examples and Comparative Examples, it can be understood that the emulsified cosmetics of the present invention are excellent in organoleptic properties and appearance properties.

Examples 5 to 8, Comparative Examples 3 to 4; (Skin cream) A linear alkyl group having 14 carbon atoms was used as the alkyl glycoside, and tetradecyl β-D, which is maltotriose, was used as the residue derived from reducing sugar. -Maltotrioside was used, and diester of oleic acid was used as the sucrose higher fatty acid ester.

Then, components 1 to 6 in Tables 5 to 8 were uniformly mixed and dissolved at about 80°C (solution 1), and water-soluble components 7 to 10 and 12 in the table were mixed and dissolved at about 80°C. The mixture was dissolved uniformly (solution 2). Next, while stirring the above solution 2 with a homomixer, solution 1 is added and emulsified, and in the cooling process 7
Component 11 was added at 0°C, and after the temperature was lowered to 30°C, stirring was stopped.

[0029]

[Table 5]

[0030]

[Table 6]

[0031]

[Table 7]

[0032]

[Table 8]

The properties of the obtained skin creams are shown in Tables 5 to 8. As shown in this table, the storage stability of the skin creams of Examples 5 to 8 was good, but the skin creams of Comparative Examples 3 and 4 lacking either alkyl glycoside or sucrose higher fatty acid ester Both had problems with storage stability.

Furthermore, by comparing each of the Examples and Comparative Examples, it can be understood that the emulsified cosmetics of the present invention are superior in organoleptic properties and appearance properties.

Example 9 (Make-up base) A make-up base was prepared according to the following formulation. As an alkyl glycoside, a linear alkyl group with 12 carbon atoms is used, and as a residue derived from a reducing sugar, maltose is dodecyl α-D-
Maltoside was used, and a di-triester mixture of stearic acid was used as the sucrose higher fatty acid ester. Prescription; 1. liquid paraffin
12.0 2. Squalane

3.0 3. glycerin monostearate
1.5 4. cholesterol
0.2 5. cetyl alcohol
0.5 6. Sucrose stearic acid di-triester 1.5
7. Dodecyl-α-D-maltoside
0.5 8. glycerin
5.0
9. carrageenan
0.510. Methyl paraoxybenzoate 0.11
1. dipropylene glycol
3.012. titanium oxide
0.5
13. fragrance
0.114. purified water
71.6

Of the above components, oil components 1 to 6 were uniformly mixed and dissolved at about 80°C (solution 1), and aqueous components 7 to 10 and 14 were uniformly mixed and dissolved at about 80°C (solution 1). 2). Furthermore, component 12 is replaced by component 1.
1 (Dispersion 1). Next, the above solution 2
After adding Solution 1 and emulsifying it while stirring with a homomixer, Dispersion 1 was added, and after further stirring, this was cooled. In addition, component 13 was added at 70°C during the cooling process, and 30°C
After the temperature was lowered to ℃, stirring was stopped.

The make-up base of Example 9 thus obtained was an O/W type emulsion, and had a concentration of 45
The stability was extremely good even after storage for 4 months in a constant temperature bath at ℃. In addition, the sensory characteristics (skin feel, moist feeling) were good, and the appearance (texture) was also good.

Example 10 (Hair Cream) A hair cream was prepared according to the following formulation. A linear alkyl group with 12 carbon atoms was used as the alkyl glycoside, dodecyl β-D-maltoside, which is maltose, was used as the residue derived from reducing sugar, and a di-triester mixture of stearic acid was used as the sucrose higher fatty acid ester. Using. Prescription; 1. stearic acid
0.5 2. Squalane
2.0 3. liquid paraffin
40.0 4
．． glyceryl monostearate
0.5 5. butyl paraben
0.1 6.
Sucrose stearic acid ditriester 1.
8 7. Pyropylene glycol
2.0 8. Sorbitol

3.0 9. glycerin
4.010. Edetate tetrasodium
0.111. Methylparaben
0.112. Dodecyl-β-D-maltoside
0.813. fragrance
0.314.
purified water
44.8

Among the above components, oily components 1 to 6 are uniformly mixed and dissolved at about 80°C (solution 1), and aqueous components 7 to 12 and 14 are mixed and dissolved at about 80°C.
The mixture was uniformly mixed and dissolved (solution 2). Next, the above solution 2
While stirring with a homomixer, Solution 1 was added and emulsified, component 13 was added at 70°C during the cooling process, and after the temperature was lowered to 30°C, stirring was stopped.

The hair cream of Example 10 thus obtained had extremely good stability even after being stored in a constant temperature bath at 45° C. for 6 months. In addition, the sensory characteristics (skin feel, moist feeling) were good, and the appearance (texture) was also good.

Example 11 (Cleansing Cream) A cleansing cream was prepared according to the following formulation. A linear alkyl group with 12 carbon atoms is used as an alkyl glycoside, and dodecyl β, which is maltose, is used as a residue derived from a reducing sugar.
-D-maltoside was used, and a di-triester mixture of stearic acid was used as the sucrose higher fatty acid ester. Prescription; 1. Beeswax
5.0 2. Setanol
2.0 3. liquid paraffin
20.0
4. vaseline
20.0 5. Glyceryl monostearate 3.0
6. butyl paraben
0.1 7. Sucrose stearic acid ditriester 2.0 8. glycerin
4.0 9. Dodecyl-β-D-
Maltoside 0.910. Methylparaben
0.111. dipropylene glycol
2.012. purified water
40.9

Among the above components, oily components 1 to 7 were uniformly mixed and dissolved at about 80°C (solution 1
), and aqueous components 7 to 12 were uniformly mixed and dissolved at about 80°C (solution 2). Next, Solution 1 was added and emulsified while stirring Solution 2 with a homomixer, and then the temperature was lowered to 30° C. and stirring was stopped.

The cleansing cream of Example 10 thus obtained has excellent stability even after being stored in a constant temperature bath at 45°C for 6 months, and has excellent sensory properties (skin feel, moisturizing feeling) and The appearance (texture) was also good.

[0044]

[Effects of the Invention] As described above, the emulsified cosmetic of the present invention has good long-term storage stability, exhibits excellent organoleptic properties, and has a beautiful appearance with fine texture.

[Table 1]

[0037]

[Table 2]

[0038]

[Table 3]

[0039]

[Table 4]

[0040]

[Table 5]

[0041]

[Table 6]

[0042]

[Table 7]

[0043]

[Table 8]

Claims (1)

[Claims] 1. An emulsified cosmetic containing an oily substance and water, characterized by containing an alkyl glycoside and a sucrose higher fatty acid ester.