JPS61293903A - Water-in-oil type emulsion cosmetic - Google Patents

Abstract

PURPOSE:A stable water-in-oil type emulsion cosmetic having an improved feeling of use, obtained by using an oily phase blended with a large amount of a silicone oil, an aqueous phase containing an amino acid and/or an amino acid salt and a specific surface active agent. CONSTITUTION:A water-in-oil type emulsion cosmetic comprising an oily phase containing >=30wt% based on the oily phase component of a silicone oil such as dimethylpolysiloxane, methylphenylpolysiloxane, decamethylcyclopentasiloane, octamethylcyclooctasiloxane, etc., an aqueous phase containing >=0.1wt%, especially 0.1-20wt% based on the aqueous phase component of an amino acid and/or an amino acid salt such as aspartic acid, glutamic acid, etc., and >=2wt% based on the total components of a lipophilic nonionic surface active agent such as sorbitan sesquiisostearate, glyceryl dioleate, etc., having a weight ratio of the silicon oil to the amino acid of 1:1-1:5, especially 1:2-1:4.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a water-in-oil emulsion cosmetic that is stable and has an excellent feeling of use. More specifically, the present invention relates to a water-in-oil emulsion cosmetic that is stable and has an excellent feel when used, even though it contains a large amount of silicone oil.

[Conventional technology] Conventionally, hydrocarbon-based oils such as liquid paraffin and squalane have been widely known as oils used in water-in-oil emulsified cosmetics, and these oils cover the skin surface with an oil film to prevent water evaporation. Therefore, it is thought to be effective for treating rough skin.

Facial cosmetics using these oils are on the market as products with high treatment effects, and makeup cosmetics are on the market as products with excellent water repellency and less makeup smearing.

On the other hand, water-in-oil emulsion cosmetics containing silicone oil as the oil component are smooth to use and have excellent water repellency. In particular, cosmetics containing volatile silicone spread easily when applied, and as they spread, the volatile silicone oil evaporates, reducing the amount of oil remaining on the skin surface, resulting in good adhesion. It is characterized by being able to produce products that are sweat resistant and do not easily remove makeup.

[Problems to be solved by the invention] However, silicone oil has the disadvantage that it is very difficult to obtain a stable water-in-oil emulsion system, and it is difficult to obtain a stable water-in-oil emulsion system by blending a large amount of silicone oil and creating a stable water-in-oil emulsion system. Although water-in-oil type emulsified cosmetics having the same properties are strongly desired, they have not yet been obtained. Until now, methods for obtaining highly stable water-in-oil emulsified cosmetics using silicone oil have been known, such as increasing and solidifying waxes or using silica. It had drawbacks such as being heavy and sticky.

In view of these circumstances, the present inventors conducted extensive studies and found that an oil phase containing 30% or more of silicone oil can be stabilized by using an aqueous phase containing amino acids and/or amino acid salts and a specific surfactant. The present inventors discovered that a water-in-oil emulsion cosmetic with an excellent feel during use could be obtained, and completed the present invention.

[Means for Solving the Problems] That is, the present invention provides (A) a silicone oil containing 30% of the oil phase component.
(B) an aqueous phase in which amino acids and/or amino acid salts account for 0.1% or more of the aqueous phase components; (C)
It consists of a lipophilic ionic surfactant, (A): (B
) is in a weight ratio of 1:1 to 1:5, and (C) is 2% by weight or more of the total components. The configuration of the present invention will be explained in detail below.

The silicone oil used in the present invention may be any conventionally used silicone oil, but specific examples include dimethylpolysiloxane, methylphenylpolysiloxane, decamethylcyclopentasiloxane, and octamethylcyclooctasiloxane. Volatile silicone oils such as cyclopentasiloxane, octamethylcyclooctasiloxane are preferred.

The amount of silicone oil to be blended is related to the amount of the oil phase component, but it is preferably 30% or more of the oil phase component. In other words, if the blended amount of silicone oil is 30% or less of the oil phase components, the properties of the oil phase will be close to those of other blended oils, so a lipophilic nonionic surfactant suitable for the other blended oils should be used. can be used. However, when the blended amount of silicone oil exceeds 30% of other oil phase components, conventional lipophilic nonionic surfactants cannot create a stable emulsified state and separate. A nonionic surfactant is required to maintain a stable emulsified state. Next, the lipophilic nonionic surfactants used in the present invention include sorbitan sesquiisostearate, sorbitan diisostearate, sorbitan sesquiolate, sorbitandiolate, glyceryldiolate, glyceryl diisostearate and the following [1 ], [2co, surfactant with the structural formula of [3] (the following is a margin) m Old XR' [3] is a phenyl group, and R' is hydrogen or has 1 to 12 carbon atoms.
an alkyl group, p is a number from 1 to 5, q is a number from 2 to 3, x,
mSn is the average number of polyoxyalkylene-modified organopolysiloxanes with 5 to 5 polyoxyalkylene groups in the molecule.
The polyoxyalkylene-modified organopolysiloxane contains 40% by weight and has a molecular weight of 1,000 or more. ), and these surfactants contain silicone oil at 30%
% or more of oil phase components to create a stable water-in-oil emulsion system.

Furthermore, sorbitan sesquiisostearate, sorbitan diisostearate, sorbitan sesquiolate, sorbitan dioleate, glyceryl dioleate, glyceryl diisostearate and [1] [2] [3
Among the activators having the general formula: 5 to 40% by weight of polyoxyalkylene groups and a molecular weight of 1,000 or more, combined with amino acids and/or amino acid salts, the stability can be dramatically improved. improves.

Furthermore, the amino acids used in the present invention may be commonly known amino acids (for example, monoamino monocarboxylic acids such as glycine, alanine, valine, leucine, isoleucine, serine, threonine, phenylalanine, monoamino dicarboxylic acids such as aspartic acid, glutamic acid, etc.). diaminomonocarboxylic acids and/or their salts such as arginine, lysine, etc. These amino acids and/or amino acid salts are used, especially acidic amino acids such as aspartic acid, glutamic acid, and their sodium or potassium salts. is emulsified with the lipophilic nonionic surfactant of the present invention to produce a stable water-in-oil emulsified cosmetic.

The concentration of the amino acid and/or amino acid salt used in the present invention is 0.1% or more in the aqueous phase component, but 0.1% or more.
% or less, the effect will not appear, and if a large amount is added, precipitation will occur, which is not preferable. Therefore, the concentration of the amino acid and/or amino acid salt used in the present invention is preferably 0.1% to 20%.

In addition, the present invention is characterized in that (A) silicone oil accounts for 30% of the oil phase components.
(B) an aqueous phase in which amino acids and/or amino acid salts are 0.1% or more in the aqueous phase components; (C)
The blending amount of the lipophilic nonionic surfactant can be determined by adjusting the amount of silicone oil in (A), the amount of amino acid in (B), and the amount of lipophilic surfactant in (C). However, in order to have good stability, a non-sticky feel, a light texture, and good spreadability, it is necessary to incorporate a large amount of the aqueous phase component, and it is preferable to use (A).
: The weight ratio of (B) is preferably 1:1 to 1:5, and (C) is preferably 2% or more of the total components, particularly preferably (A): (
B) is in a weight ratio of 1=2 to 2:4.

As described above, one of the characteristics of the water-in-oil emulsion cosmetic of the present invention is that it can contain a large amount of aqueous phase components, and as a result, it is easy to create a light feel when using it, and it is different from conventional water-in-oil emulsion cosmetics. The feeling of use is revolutionary compared to other materials.

In addition to the above-mentioned essential ingredients, the emulsified cosmetic composition of the present invention may contain, if necessary, components that are included in ordinary cosmetic compositions.

For example, moisturizing agents such as propylene glycol, dipropylene glycol, 1-3 butylene glycol, glycerin, maltitol, sorbitol, polyethylene glycol, sodium hyaluronate, and pyrrolidone carboxylic acid salts are used as water phase components, and vaseline and lanolin are used as oil phase components. , solid or semi-solid oils such as ceresin, microcrystalline wax, carnauba wax, candelilla wax, higher fatty acids, higher alcohols, liquid oils such as squalane, liquid paraffin, ester oil, triglyceride, etc.
Coloring materials such as inorganic pigments and organic pigments, surfactants such as cationic active agents, anionic active agents, and nonionic active agents, drugs such as vitamin E and vitamin E acetate, astringents, antioxidants, and preservatives. , fragrances, pH 1 adjusters such as citric acid, sodium citrate, lactic acid, sodium lactate, dibasic sodium phosphate, thickeners such as organically modified montmorillonite, ultraviolet absorbers, etc., in the water-in-oil emulsified cosmetic of the present invention. It can be blended as appropriate.

〔Example〕

Next, the present invention will be explained in detail using examples.

The present invention is not limited thereby. The blending amounts in the examples are weight %. Prior to the examples, evaluation methods adopted in each example will be explained.

(Stability) A water-in-oil emulsion cosmetic prepared by a prescribed method was left in a constant temperature bath at 0°C, room temperature, and 37°C, and its stability was evaluated according to the following evaluation criteria immediately after trial production and after a certain period of time. did.

Separation No aggregation ○ 〃 Slightly present
× (Usability) Using 20 female panels, usability such as spreadability, lightness, stickiness, and fit was evaluated according to the following evaluation criteria.

Number of people who answered that it was good: 15 or more O 7 to 14 people H - 6 people or less 7 in advance for this
Add (2) heated to 0°C, and after emulsifying and dispersing, stir and cool to room salt to obtain the desired hand cream.

The manufacturing methods of Examples and Comparative Examples below are based on the method of Example 1.

(Results) As shown in Table 1, the hand cream of this example showed good results in both stability and usability.

Example 2 Hand cream Octamethylcyclotetrasiloxane 5.0 Decamethylcyclopentasiloxane 5.0 Dimethylpolysiloxane (6cs) 5.0 Liquid paraffin (
70cs) 5.0 Sorbitan diisostearate 8.0 Fragrance
0.2 ion exchange water
62.5L-Serine
1. OL-Sodium Aspartate 3.
0 Propylene glycol 5.0 Preservative 0.3 (Results) As shown in Table 1, the hand cream of this example showed good results in both stability and usability.

Comparative example Edecamethylcyclopentasiloxane 10.0 Dimethylpolysiloxane (6cs) 5.0 Liquid paraffin (70cs) 5.0 Polyoxyalkylene modified organopolysiloxane [General formula 1] (Polyoxyalkylene weight 20% Average molecular weight 6200 ) 5.0 Fragrance 0.2 Ion exchange water 65.61.3 Butylene glycol 5.0 Preservative
0.2 (Results) The evaluation results of stability and usability are shown in Table 1.

Comparative Example 2 Decamethylcyclopentasiloxane 10.0 Dimethylpolysiloxane (6cs) 5.0 Liquid paraffin (70cs) 5.0 Glyceryl monooleate 5.0 Fragrance 0.2 Ion exchange water 65.6 L-sodium glutamate 4.01 .3 Butylene glycol 5.0 Preservative
0.2 (Results) The evaluation results of stability and usability are shown in Table 1.

Comparative Example 3 Liquid paraffin (70cs) 25.
0 diglycerine diisostearate 6.0 fragrance 0.2 ion exchange water 59.6 L-sodium glutamate 4゜01.3 butylene glycol 5.0 preservative
0.2 (Results) The evaluation results of stability and usability are shown in Table 1.

Table 1 Examples 3 to 6 The formulations shown in Table 2 were prepared and evaluated for stability and usability. The evaluation results are shown in Table 2.

Comparative Example 4.5 The blended products shown in Table 2 were prepared and evaluated for stability and usability. The evaluation results are shown in Table 2.

Examples 7 to 10 The formulations shown in Table 3 were prepared and evaluated for stability and usability. The evaluation results are shown in Table 3.

Comparative Example 6 The blended products shown in Table 3 were prepared and evaluated for stability and usability. The evaluation results are shown in Table 3.

Example 11 Emulsion Octamethylcyclotetrasiloxane 10.0 Dimethylpolysiloxane (6cs) 10.0 Cetyl isooctanaate 2.0 Liquid paraffin (120cs) 2.0
Sorbitan diisostearate 3.0 Polyoxyalkylene-modified organopolysiloxane [General formula 3] (Polyoxyalkylene group 17% by weight, average molecular weight 6000) 3.0 Antioxidant Usual amount Fragrance
〃Ion exchange water L-Saison 1.0L ~ Sodium aspartate 2.0 Glycerin
3.0 Sodium hyaluronate
0.1 preservative
0.2 Example 12 Hair Cream Octamethylcyclotetrasiloxa 7 10.0 Phenylpolysiloxane 5.0 Squalane
4.0 silicone wax
1.0 Glyceryldiolate 2. O Polyoxyalkylene modified organopolysiloxane [General formula 2] (Polyoxyalkylene group 15% by weight, average molecular weight 9000) 4.0 Antioxidant 0.05 Vitamin E
Acetate 0.1 ion exchange water
67゜05 glycine
2.0 Leucine
1.0 Tyrosine 0
・5 Propylene glycol 3.0 Seat protection agent 0.3 Example 13
Sunken lotion dimethylpolysiloxane (6cs) 5.0 decamethylcyclopenatasiloxane 3.0 olive oil 5.0 liquid paraffin (
70cs) 5.04-tert-butyl-4'-methoxy-dibenzoylmethane
0.3 dimethyloctyl P A P A
1.0 Polyoxyalkylene modified organopolysiloxane [General formula 1] (Polyoxyalkylene group 20% by weight, average molecular weight 2000) 6.0 Fine particle titanium oxide 1.0 Antioxidant
0.05 fragrance
0.3 ion exchange water
61.05 dipropylene glycol
5. OL-sodium glutamate
5.0 Sodium pyrrolidone carboxylate 2.0 Preservative 0.3 Example I4
Massage Cream Decamethylcyclopenatasiloxane 5.0 Dimethylpolysiloxane (6cs) 5.0 Liquid Paraffin (70cs) 10.0 Squalane
5.0 Sorbitan diisostearate 4.0 Polyoxyalkylene modified organopolysiloxane [General formula 1] (Polyoxyalkylene group 15% by weight, average molecular weight 3000) 3.0 Vitamin E acetate 0.1 Antioxidant 0.05 fragrance
0.3 ion exchange water
58.35L-Sodium Aspartate 2,0 Glycine
2.0 glycerin
2.01, Labylene Glycol 3.0 Preservative 0.2 [Effects of the Invention] The present invention provides a water-in-oil emulsion cosmetic that has the same structure as described above, but has excellent stability and a light feel when used. You can get a fee.

Patent Applicant: Shisei Co., Ltd. Voluntary amendment to the legal proceedings) January 27, 1985 1. Indication of the incident Patent Application No. 1988-108004 2. Name of the invention: water-in-oil emulsified cosmetics 3. Person making the amendment Relationship to the case Patent applicant 5, Number of inventions increased by the amendment 06, Column 7 for detailed explanation of the invention subject to the amendment, Contents of the amendment ■ Replace the table on page 3 of the specification with Attachment 1.

■ On the 8th line from the top of the 4th page of the specification, “-Molecular weight is 1”
,000 or more. ” to “-molecular weight is i, oo
.

Represents a number that is greater than or equal to. ” he corrected.

(2) Correct "r-(C) Lipophilic ionic surfactant--" in the 12th line from the top of page 7 of the specification to "--(C) Lipophilic non-ionic surfactant-".

■ Replace the table on page 10 of the specification with Attachment 2.

■ In the 8th line from the top of page 11 of the specification, "--The molecular weight is 1,000 or more." is changed to "-The molecular weight is 1,000 or more."
Represents a numerical value greater than or equal to 000. ” he corrected.

■ Add the character "de" after "%" on the 18th line from the top of page 11 of the specification.

■ “and” on the 13th line from the top of the 12th page of the statement
Delete the three characters and add one character "no" in its place.

■ In the 17th line from the top of page 13 of the specification, [-1:2 to 2:4 in weight ratio.-] is changed to "-1:2 to 1:4 in weight ratio.
−・−” and correct it.

■ Delete the seven characters "immediately after trial production" from the 16th line to the 17th line from the top of page 15 of the specification.

[Phase] Replace the table of Example 11 emulsion on page 26 of the specification with Attachment 3.

■ "1. Butylene glycol" in the 18th line from the top of page 29 of the specification is replaced with "1,3-butylene glycol"
Correct to.

Example II Emulsion Octamethylcyclotetrasiloxane 10.0 Dimethylpolysiloxane (6cs) 10.0 Cetyl isooctanaate 2.0 Liquid paraffin (1
20cs) 2.0 Sorbitan diisostearate 3.0 Polyoxyalkylene modified organopolysiloxane [General formula 3] (Polyoxyalkylene group 17% by weight, average molecular weight 6000) 3.0 Antioxidant Usual amount Fragrance
〃Ion exchange water
63.7L-Serine
1. OL-Sodium Aspartate 2.
0 Glycerin 3.0 Sodium hyaluronate 0.1 Preservative
0.2 Procedural amendment (voluntary) July 1r, 1985 1, Indication of the case, Patent Application No. 1988-108004 2, Name of the invention, water-in-oil type emulsified crude material 3, Person making the amendment Related Patent Applicant 5, Number of inventions to be cultivated by amendment 066 Detailed explanation column 7 of the invention subject to amendment, after "Fluid oil such as celite," on page 44 of the specification of the amendment, line 18 from the top Add 10 characters of "Others as requested".

Claims (5)

[Claims] (1) (A) An oil phase in which silicone oil is 30% by weight or more (hereinafter simply referred to as %) of the oil phase component, and (B) an amino acid and/or an amino acid salt is 0.1% or more in the water phase component. and (C) a lipophilic nonionic surfactant, where (A):(B) is in a weight ratio of 1:1 to 1:5, and (C)
A water-in-oil emulsion cosmetic containing 2% or more of the total ingredients. (2) The water-in-oil emulsion cosmetic according to claim 1, wherein the silicone oil is dimethylpolysiloxane, methylphenylpolysiloxane, decamethylcyclopentasiloxane, or octamethylcyclooctasiloxane. (3) The lipophilic nonionic surfactant is sorbitan sesquiisostearate, sorbitan diisostearate, sorbitan sesquiolate, sorbitan oleate, glyceryldiolate, glyceryl diisostearate, or the following general formula [1], [2] ], [3] The water-in-oil emulsion cosmetic according to claim 1, which is a polyoxyalkylene-modified organopolysiloxane represented by [3]. ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼ [1] ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼ [2] ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼ [3] {General formulas [1], [2], In [3], R is a methyl group or partially a phenyl group, and R' is hydrogen or a carbon number of 1 to 12
an alkyl group, p is a number from 1 to 5, q is a number from 2 to 3, x,
m and n are the average numbers, and the polyoxyalkylene-modified organopolysiloxane has 5 to 5 polyoxyalkylene groups in the molecule.
The polyoxyalkylene-modified organopolysiloxane contains 40% by weight and has a molecular weight of 1,000 or more. } (4) The water-in-oil emulsion cosmetic according to claim 1, wherein the amino acid is aspartic acid or glutamic acid. (5) The water-in-oil emulsion cosmetic according to claim 1, wherein the amino acid salt is a sodium or potassium salt of aspartic acid or a sodium or potassium salt of glutamic acid.