JPS61293904A - Water-in-oil type emulsion cosmetic - Google Patents

Abstract

PURPOSE:A water-in-oil type emulsion cosmetic capable of being stably blended with pigment, 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 consisting of an oily phase containing >=30wt% based on the oily phase component of a silicone oil such as dimethylpolysiloxane, methylphenylpolysiloxane, etc., >=0.1wt%, especially 1-20wt% based on the aqueous phase of an amino acid and/or an amino acid salt such as aspartic acid, glutamic acid, etc., a lipophilic nonionic surface active such as sorbitan sesquiisostearate, sorbitan diisostearate, etc., and a cationic surface active agent such as dihexadecyldimethylammonium salt, etc. EFFECT:Having a fitting feeling and scarcely causing makeup collapse by sweat and sebum.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a water-in-oil emulsion cosmetic containing a pigment.

More specifically, the present invention relates to a water-in-oil emulsion cosmetic that has good pigment dispersibility, good stability, and an excellent feeling of use.

[Prior Art] Conventionally, many hydrocarbon-based oils such as liquid paraffin and squalane are known as oils used in water-in-oil emulsified cosmetics. These oils are thought to be effective against rough skin because they cover the skin surface with an oil film and prevent water evaporation.

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 fading.

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 the volatile silicone oil evaporates as it spreads, reducing the amount of oil remaining on the skin surface, resulting in good adhesion and preventing sebum and sweat. It is characterized by being able to produce products that are resistant to makeup and do not come off easily.

[Problems to be solved by the invention] However, silicone oil, especially volatile silicone oil, has the disadvantage that it is very difficult to obtain a stable water-in-oil emulsion system, and it is difficult to formulate a stable water-in-oil emulsion system. A water-in-oil emulsion cosmetic having a stability sufficient for commercial use has not been obtained despite a strong demand. Furthermore, even if a stable water-in-oil emulsion cosmetic can be obtained, the stability will drop significantly when pigments are added, and phenomena such as separation of the cosmetic, syneresis, or aggregation of the pigment may occur, causing the pigment to deteriorate. It has not been possible to obtain a water-in-oil emulsion cosmetic that is stable and has a good feel when used.

Until now, known methods for obtaining highly stable water-in-oil emulsified cosmetics made from silicone oil include adding waxes and solidifying them, or using silica, but none of these methods are effective. It had drawbacks such as being heavy and sticky.

In view of these circumstances, the inventors of the present invention made extensive studies and found that pigments can be stabilized by using amino acids and/or an aqueous phase containing amino acids and a specific surfactant in an oil phase containing 30% or more of silicone oil. The present inventors have discovered that a water-in-oil emulsion cosmetic can be obtained that can be blended into a water-in-oil type emulsion cosmetic with an excellent feel when used, and the present invention has been completed.

[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;
) A water-in-oil emulsion cosmetic comprising an inorganic and/or tatin pigment, (D) a lipophilic ionic surfactant, and (E) a cationic surfactant.

The configuration of the present invention will be explained in detail below.

The silicone oil referred to in the present invention may be any conventionally used silicone oil, but specific examples include dimethylpolysiloxane, methylphenylpolysiloxane, and compounds having the structural formulas [1] and [2] below. Especially [1],
A volatile silicone oil having the structural formula [2] is preferred.

m=Q~2 The amount of silicone oil to be blended is related to the amount of other oil phase components, but it is preferably 30% or more of the oil phase components. When the amount of silicone oil blended is 30% or less of the oil phase components, the properties of the oil phase are close to those of other blended oil components, so conventional lipophilic nonionic surfactants are sufficient to achieve stable emulsification. However, if the amount of silicone oil exceeds 30% of the oil phase components, it cannot be emulsified using conventional lipophilic active agents, and even if it is emulsified, it will separate immediately.
The lipophilic nonionic surfactant of the present invention is required to create a stable emulsified state.

The amino acids used in the present invention may be commonly known amino acids, such as glycine, alanine, valine, leucine,
Examples include monoaminomonocarboxylic acids such as isoleucine, serine, threonine, and phenylalanine, monoaminodicarboxylic acids such as aspartic acid and glutamic acid, diaminomonocarboxylic acids such as arginine and lysine, and/or salts thereof.

These amino acids and/or their salts may be used, especially acidic amino acids such as aspartic acid, glutamic acid, and their sodium or potassium salts, which can be emulsified with the lipophilic nonionic surfactants of the present invention to form stable oils. Create water-based emulsified cosmetics.

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%
In the following cases, the effect will not appear, and if a large amount is blended, precipitation will occur, which is undesirable. Therefore, the concentration of the amino acid and/or amino acid salt used in the present invention is particularly preferably 1% to 20%.

In addition, the lipophilic nonionic surfactants used in the present invention include sorbitan sesquiisostearate, sorbitan diisostearate, sorbitan sesquiolate, sorbitandiolate, glyceryldiolate, glyceryl diisostearate and the following [3 ], [4], [5 Surfactants (hereinafter referred to as blank spaces) (in the general formula [3, [4], [5], R is a methyl group or a part is a phenyl group, R ' is hydrogen or carbon number 1-12
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 polyoxyalkylene-modified organoborisiloxane has 5 to 5 polyoxyalkylene groups in its 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%
A stable water-in-oil cosmetic can be obtained by emulsifying the oil phase component containing % or more.

Furthermore, when the surfactant of the present invention is emulsified in combination with an amino acid and/or an amino acid salt, stability is dramatically improved.

The cationic activator used in the present invention may be one commonly used in cosmetics, but particularly preferably one or a mixture of two or more of dioctadecylmethylammonium salt, dioctadecylmethylammonium salt, and monooctadecyldimethylbenzylammonium salt. It is.

The inorganic and/or organic pigments used in the present invention may be those commonly used in cosmetics, such as talc, kaolin, silica, magnesium silicate, calcium silicate,
Inorganic powders such as aluminum silicate, hydrated iron oxide, hydroxyapatite, organic powders such as nylon powder, polyethylene powder, boron nitride, titanium oxide, zinc oxide, iron oxide, iron titanate, loess, mango violet,
Inorganic pigments such as cobalt violet, chromium hydroxide, chromium oxide, cobalt titanate, navy blue, ultramarine, titanium oxide, coated mica, titanium oxide coated talc,
Examples include pearl pigments such as fish scale foil, lakes of tar-based pigments, and lakes of natural pigments.

In addition, the weight ratio of the composition of the present invention is (A) 15 to 40% silicone oil, and (B) 30% or more of an aqueous phase containing amino acids and/or amino acid salts in the aqueous phase components. ~
75%, (C) inorganic and/or organic pigment from 0.5 to
40%, (D) lipophilic nonionic surfactant from 2 to 10
%, (E) cationic surfactant is preferably 0.05 to 2%, and further, (A) an oil phase in which silicone oil accounts for 30% or more of the oil phase components, and (B) amino acids and/or The mixing ratio of amino acid salts with the aqueous phase that is 0.1% or more in the aqueous phase components is the amount of silicone oil contained in (A) and the amount of amino acids and/or amino acid salts contained in (B). By adjusting the amounts of lipophilic nonionic surfactant and (D), an emulsified cosmetic that is stable and feels good on use can be obtained, and the preferred range of (A):(B) is 2:1 to 2:1. 1:5, and a particularly preferable range is 1:5.
:2 to 2 near.

In addition, the water-in-oil emulsion cosmetic composition of the present invention can contain ingredients commonly used in cosmetic compositions within a range that does not impair the effects of the present invention. For example, moisturizers such as propylene glycol, dipropylene glycol, -3-butylene glycol, glycerin, maltitol, sorbitol, polyethylene glycol, sodium hyaluronate, and pyrrolidone carboxylates are used as water phase components, and vaseline and lanolin are used as oil phase components. , ceresin, silicone wax, microcrystalline wax, carnauba wax, candelilla wax, higher fatty acids, solid or semi-solid oils such as higher alcohols, squalane, liquid paraffin, dimethylpolysiloxane, methylphenylpolysiloxane,
Liquid oils such as ester oils and triglycerides, drugs such as vitamin E and vitamin E acetate, astringents, antioxidants, preservatives, fragrances, and citric acid, sodium citrate, lactic acid, sodium lactate, dibasic sodium phosphate, etc. Appropriate amounts of pH adjusters, thickeners such as organically modified montmorillonite, ultraviolet absorbers, and the like can be blended into the water-in-oil emulsified cosmetic composition of the present invention.

〔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, the evaluation method adopted in each example will be explained.

(Stability) A water-in-oil emulsion cosmetic prepared by a predetermined method was evaluated according to 0.

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

15 or more people answered that it was good O〃 7 to 14 people △ 〃 6 or less people
Mixed pigment sericite 5.36 kaolin 4.00 titanium oxide
0.32 iron oxide yellow
0.80 iron oxide red
0.36 iron oxide black 0
．． 16 (Production method) After heating and stirring (1) to 70° C., (2) is added and dispersed, and (2) is then dissolved in a portion of ion-exchanged water and added. This was added to (2), which had been previously heated to 70°C, and emulsified and dispersed. Thereafter, the mixture is stirred and cooled to room temperature to obtain the desired emulsified foundation.

(Results) The stability results are shown in Table 1, and the usability results are shown in Table 2. The emulsified foundation of this example showed good results in both stability and usability.

Comparative Example 1 Emulsified foundation ion exchange water 57. OL-sodium glutamate 2.0 Polyoxyalkylene-modified organopolysiloxane [General formula 3] (18% polyoxyalkylene group) 4.0 Decamethylcyclopentasiloxane 12.0 Liquid paraffin (1
20cs) 5.0 mixed pigment sericite 5.36 kaolin 4.00 titanium oxide
9.32 Iron oxide yellow
0.80 iron oxide red
0.36 iron oxide black 0
．． 16 (Production method) According to the method of Example 1, an emulsified foundation was produced.

(result) The stability results are shown in Table 1.

Comparative Example 2 Emulsified foundation ion-exchanged water 57.0 Distearyldimethyl-ammonium chloride 0.1 Polyoxyalkylene-modified organopolysiloxane [General formula 3] (18% polyoxyalkylene groups) 4°0 Decamethylcyclopentasiloxane 12. 0 Liquid paraffin (120 cs) 5.0 Mixed pigment sericite 5.36 Kaolin 4.00 Titanium oxide
9.32 Iron oxide yellow
0.80 iron oxide red
0.36 iron oxide black 0
．． 16 (Production method) According to the method of Example 1, an emulsified foundation was produced.

(result) The stability results are shown in Table 1.

Comparative Example 3 Emulsified foundation, ion-exchanged water 57.0 Distearyldimethyl-ammonium chloride 0.1 Sodium L-glutamate 2.0 Diglycerin diisostearate 4.0 Decamethylcyclopentasiloxane 12.0 Liquid paraffin ( 120
c s ) 5.0 mixed pigment sericite 5.36 kaolin 4.00 titanium oxide 9.32 iron oxide yellow
0.80 iron oxide red
o, 36 iron oxide black
0.16 (Production method) An emulsified foundation was prepared according to Example 1.

(result) The stability results are shown in Table 1.

Table 1 Stability Results Table 2 Usability Results Comparative Example 4 Emulsified Foundation Ion Exchange Water 49.5 Montmorillonite 0.5 Triethanolamine 1.0 Stearic Acid
2.0 cetanol
2.0 liquid paraffin (120 cs)
20.0 POE (20) Sorbitan monooleate 2.0 Glyceryl monooleate 2.0 Mixed pigment 20.0 (Results) The usability results are shown in Table 2.

Example 2 Emulsified foundation ion exchange water 25.11.3
Butylene glycol 5.0 caustic potash
0.1 Dihexadecyldimethylammonium chloride 1.0 L-sodium glutamate 2.0 Sodium hyaluronate 0.1 Liquid paraffin (120 cs
) 5.0 octamethylcyclotetrasiloxane 10.0 decamethylcyclopentasiloxane
10.0 Dimethylpolysiloxane 5.
0 Sorbicun sesqui isostearate 2.0 Polyoxyalkyl modified organopolysiloxane [General formula 3] (Polyoxyalkylene group 20%) 4.0 Antioxidant 0.1 Preservative
0.3 fragrance
0゜3 Mixed pigment kaolin 5.0 Ceritonite 7.4 Talc
3.0 zinc oxide
3.0 Titanium oxide 10.0
Iron oxide yellow 1.0 Iron oxide red
O04 iron oxide black
0.2 Example 3 Emulsified Foundation Ion Exchange Water 50.65 Dipropylene Glycol 3.0L-Sodium Aspartate, 2. OL-sodium glutamate 2.0 decamethylcyclopentasiloxane 15.0 dimethylpolysiloxane
5.0 Dioctadecyldimethylammonium chloride 0.2 Polyoxyalkyl-modified organopolysiloxane [general formula 3 (polyoxyalkylene groups 25%)] 3.0 Polyoxyalkyl-modified organopolysiloxane [general formula 5] (polyoxyalkylene Group 17%) 3.0 Valmitic acid 0.5 Antioxidant
0.05 preservative
0.3 fragrance
0.3 Mixed pigment seritonite 8.03 Titanium oxide 6.0 Iron oxide yellow
0゜6 iron oxide red
0.25 Iron oxide black 0.12
Example 4 Blushing ion exchange water 55.05 monohexadecyl monophenyl dimethyl ammonium chloride 0.5 L-sodium glutamate 2.0 glycerin
5.0 Sodium pyrrolidone carboxylate 2.0 Decamethylcyclopentasiloxane
20.0 Polyoxyalkylene modified organopolysiloxane [General formula 4] (20% polyoxyalkylene group) 4.0 Glyceryldiolate 2.0 Stearic acid
1.0 silicone wax
0.5 dimethyloctyl P A B A
0.5 antioxidant
0.05 Preservative 0.
2 Fragrance 0.2 Mixed pigment titanium oxide 4.0 Iron oxide red
1.0 Serisite
2゜0 Example 5 Makeup base ion exchange water 56.15L-
Sodium aspartate 2. OL-Serine
1.0 Sodium citrate
0.51.3 Butylene glycol
5.0 preservative
0.3 Organically modified montmorillonite 0.5
Cetylisooctanate 2.0 Octamethylcyclotetrasiloxane 2.0 Decamethylcyclopentasiloxane 5.0 Dimethylpolysiloxane (
6cs) 5.0 liquid paraffin (1'20cs)
3.0 Dioctadecyldimethylammonium chloride 0.2 Octadecyldimethyl P A B A 1.04-ter
t-Butyl-4”-methoxy-dibenzoylmethane
0.5 oleyl alcohol
0.5 stearic acid 0.5
Sorbitan diisostearate 4.0 Polyoxyalkylene-modified organopolysiloxane [General formula 3] (Polyoxyalkylene group 20%) 4.0 Antioxidant 0.05 Fragrance
0.3 Mixed pigment fine particles titanium oxide 3.0 Cobalt titanate 0.5 Talc
1.5 Nylon powder (particle size 5 microns) 1.0 Example 6 Sunscreen ion exchange water 31.85 Monohexadecyltrimethylammonium chloride 1.5 Sodium pyrrolidone carboxylate 1.0 Propylene glycol 5.0 Lysine
1. OL-sodium glutamate
3.5 cetanol 0.5
Stearic acid 0.5 Sorbitan diisostearate 8.0 Silicone wax 1.0 Decamethyloctasiloxane 15.0 Liquid paraffin (70cs) 3.0 Olive oil
2.0 lanolin
1.0 Vitamin E Acetate
0.1 Antioxidant 0.
05 Preservative 0.3 Fragrance 0.2 Mixed pigment fine particle titanium oxide 5.0 Sericite
9,35 zinc oxide
5.0 iron oxide yellow
0.5 Iron oxide red 0.15 Nylon powder 5.0 Example 7 Sunken cream ion exchange water 61.55 L-sodium glutamate 3.0 1.3 Butylene glycol 5.0 Silicone wax
0.5 dimethylpolysiloxane (100
cs) 5.0 decamethylcyclopentasiloxane 1
5.0 Dioctadecyldimethylammonium chloride 0.1 Polyoxyalkylene modified organopolysiloxane [General formula 5] (Polyoxyalkylene group 10%) 3.0 Polyoxyalkylene modified organopolysiloxane [General formula 3] (Polyoxyalkylene Group 25%) 3゜0 Valmitic acid 0.2 Dimethyloctyl P A B A O,54-tert-butyl-4'-methoxy-dibenzoyl titanium
0.5 Antioxidant 0
．． 05 Preservative 0.3 Fragrance 0.3 Mixed pigment kaolin 0.37 Iron oxide yellow
0,3 iron oxide red
0.18 iron oxide black
0.15 titanium oxide coated mica 1.0 Example 8 Emulsified foundation ion exchange water 51.95L-Serine 2. OL-sodium glutamate 2.0 Dimethylborinoxane (6cs) 17.0 Dioctadecyldimethylammonium chloride 0.2 Polyoxyalkylene-modified organopolysiloxane [General formula 3] (Polyoxyalkylene group 20%) 6.0 Palmitic acid 0.4 antioxidant
0.05 preservative
0.2 fragrance
0.2 Mixed pigment 20.
0 [Effects of the Invention] Since the present invention has the configuration as described above, it has excellent stability, feels light in use, and has a good fit.
We were able to obtain an innovative water-in-oil emulsion cosmetic that does not cause makeup to deteriorate due to sweat or sebum.

Claims (8)

[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. A water-in-oil emulsion cosmetic comprising an aqueous phase, (C) an inorganic and/or organic pigment, (D) a lipophilic nonionic surfactant, and (E) a cationic surfactant. (2) The silicone oil is dimethylpolysiloxane, methylphenylpolysiloxane or the following general formula [1], [2]
The water-in-oil emulsion cosmetic according to claim 1, which is a silicone oil represented by: ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼ [1] n = 1 to 3 ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼ [2] m = 0 to 2 (3) The water-in-oil emulsion cosmetic according to claim 1, wherein the amino acid is aspartic acid or glutamic acid. (4) 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. (5) The lipophilic nonionic surfactant is sorbitan sesquiisostearate, sorbitan diisostearate, sorbitan sesquiolate, sorbitan oleate, glyceryldiolate, glyceryl diisostearate, or the following general formula [3], [4] ], [5] The water-in-oil emulsion cosmetic according to claim 1, which is a polyoxyalkylene-modified organopolysimeloxane represented by [5]. ▲There are mathematical formulas, chemical formulas, tables, etc.▼[3] ▲There are mathematical formulas, chemical formulas, tables, etc.▼[4] (In the general formulas [3], [4], [5], R is a methyl group or Phenyl group, 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,
m and n are the average numbers, and the polyoxyalkylene-modified organopolysiloxane has 5 to 5 polyoxyalkylene groups in the molecule.
The polyoxyalkylene-modified organosiloxane contains 40% by weight and has a molecular weight of 1,000 or more. ) (6) The water-in-oil emulsified cosmetic according to claim 1, wherein the cationic activator is dihexadecyldimethylammonium salt, dioctadecyldimethylammonium salt, or monooctadecylmethylbenzylammonium salt. (7) The ratio of (A):(B) is 2:1 to 1:5 (weight ratio,
The water-in-oil emulsion cosmetic according to claim 1, which is the same hereinafter). (8) 15 to 40% of (A) to the total amount of the composition, (B
) is 30 to 75%, (C) is 0.5 to 40%, (D) is 2 to 10%, and (E) is 0.05 to 2% in the oil according to claim 1. Water-based emulsified cosmetics.