JPH0611693B2 - Emulsified cosmetics - Google Patents

Description

TECHNICAL FIELD The present invention relates to an emulsified cosmetic composition obtained by emulsifying an oily substance using a specific monoacyl-3-glycerylphosphorylcholine as an emulsifier, which will be described later. More specifically, skin,
Emulsification that acts mildly on hair, has excellent emulsification properties and storage stability (durability over time), and has good feel, moisture retention, usability (stretching, spreading, etc.) and appearance (gloss, texture, etc.) Type cosmetics.

(Prior Art) Conventionally, as an essential condition for emulsion type cosmetics such as cream and emulsion, (1) high safety without irritating the skin and hair.

(2) Emulsion stability is good even after long-term storage.

(3) Good appearance such as texture and gloss.

(4) It should have good exfoliation, extension, and feel (it gives the skin a refreshing or moisturizing feel. It does not give a greasy feeling) during use.

(5) To give proper moisturizing properties (water retention) to the skin and hair.

(6) Do not cause deterioration or odor even after long-term storage. Etc.

However, in order to satisfy these conditions, careful formulation design such as selection of emulsifiers, specific combination, combination of special bases, etc. is carried out, but it is not easy to achieve the purpose.

Emulsified cosmetics (for example, creams) using ordinary synthetic emulsifiers (for example, anionic or nonionic synthetic surfactants) generally have a drawback that they tend to cause irritation to the skin and hair.

On the other hand, lecithins such as egg yolk lecithin and soybean lecithin are known as natural emulsifiers that are mild to the skin, but their emulsifying power is insufficient due to oily substances. Furthermore O
In the case of producing a / W-type emulsion, the phase was converted to a W / O-type emulsion at around room temperature, and the appearance and the emulsification characteristics were not so good. Furthermore, it has the drawback that it may deteriorate and odor during long-term storage.

(Problems to be Solved by the Invention) As a result of intensive studies by the present inventors to develop a phospholipid-based emulsifier that has improved the above-mentioned problems of the prior art, the specific monoacyl-3-glycerylphosphorylcholine described below is an oily substance. Can be emulsified uniformly, has a mild effect on the skin and hair, has excellent emulsification and storage stability, and has excellent feel, moisture retention, usability (stretching, spreading, etc.), and appearance (gloss, texture, etc.) The present invention has been completed by finding that a good emulsion cosmetic can be easily produced.

The object of the present invention is to act mildly without causing irritation to the skin and hair, as well as to have excellent emulsifying properties and storage stability, and feel, moisturizing property, usability (stretching, spreading, etc.),
And to provide an emulsion cosmetic having a good appearance (gloss, texture, etc.).

Another object of the present invention is to provide a novel emulsifier useful for the production of emulsion cosmetics. Still another object is to provide an emulsified cosmetic composition which does not require the use of a synthetic surfactant and facilitates the formulation design (composition design) of the emulsified cosmetic composition and which can be produced industrially advantageously. .

(Means for Solving Problems) In the emulsified cosmetic composition in which the main constituent components are an emulsifier containing a phospholipid, an oily substance, and water, the phospholipid is substantially 1-palmitoyl-3- Glycerylphosphorylcholine, 2-palmitoyl-3-glycerylphosphorylcholine, 1-stearoyl-3-glycerylphosphorylcholine, 2-stearoyl-3-glycerylphosphorylcholine At least one monoacyl-3-glycerylphosphorylcholine selected from the group consisting of This is achieved by the characteristic emulsified cosmetic.

The specific monoacyl-3-glycerylphosphorylcholine in the present invention is a known compound.

The specific monoacyl-3-glycerylphosphorylcholine can be obtained, for example, by treating phosphatidylcholine as a raw material with a snake venom phospholipase or porcine pancreatic extract enzyme bacreatine and fractionating by high performance liquid chromatography. It can also be obtained by chemical synthesis.

The specific monoacyl-3-glycerylphosphorylcholine is safe for the human body, and its skin irritation was determined according to the method of Draize described below, resulting in an animal skin irritation score and a human body skin irritation score of 0 (zero). ), Which is non-irritating.

(Draize.JH, Association of Food and Drug Officia
ls of the United States. “Appraisal of the Safety
of Chemicals in Foods, Drugs and Cosmetics ”, 46 (195
9). Texas, State Department of Health, Austin.] The specific monoacyl-3-glycerylphosphorylcholine in the present invention is used as an emulsifier in one kind or in combination of two kinds. The use amount (blending amount) is 0.01 to 10% by weight, preferably 1 to 5% by weight, based on the total weight of the prescription components in the cosmetic (weight of the composition). If it is less than 0.01% by weight, the emulsification of the oily substance tends to be poor, and if it is more than 10% by weight, the solubility in the system is lowered and the feel is not sufficient.

The oily substance that can be used in the present invention is a known oily substance for cosmetics, such as higher aliphatic hydrocarbons, animal fats and oils, vegetable fats and oils, waxes, higher alcohols, higher fatty acids, ester oils, Silicon oil or the like. Hydrocarbons include, for example, liquid paraffin, squalane, microcrystalline wax, vaseline, ceresin, and vegetable oils and fats include, for example, olive oil, castor oil, cocoa butter,
Examples of vegetable oils such as palm oil include cod liver oil,
Bees tallow, butter fat, etc., waxes such as beeswax, carnauba wax, etc., and higher fatty acids, eg, lauric acid, myristic acid, valmitic acid, stearic acid, oleic acid, behenic acid, lanolin fatty acids, etc., higher alcohols. Are, for example, lauryl alcohol, stearyl alcohol, cetyl alcohol, oleyl alcohol, etc., and ester oils include, for example, butyl stearate, hexyl laurate, octyldodecyl myristate, diisopropyl adipate, diisopropyl sebacate, straight-chain esters, branched A chain ester etc. can be mentioned.

These oily substances are used alone or in combination of two or more. The use amount (blending amount) is 10 to 80% by weight, preferably 20 to 60% by weight, based on the total weight of the prescription components in the cosmetic. If the amount is less than 10% by weight, the storage stability is slightly deteriorated and the feel is slightly refreshed, and if the amount is more than 80% by weight, the oily tackiness is remarkably unfavorable.

The water content in the present invention is 10 to 89.9% by weight, preferably 20 to 80% by weight, based on the total weight of the ingredients.

The monoacyl-3-glycerylphosphorylcholine which can be used in the present invention exhibits good surface-active ability (ability to reduce interfacial tension) and can stably emulsify the oily substance, but casein soda, pectin, xanthan gum, karaya gum, locust. When at least one water-soluble natural polymer selected from the group consisting of bean gum and carrageenan is blended, the oily substance can be emulsified very stably. The above natural polymers may be used alone or in combination of two or more, and the compounding amount thereof is 0.1 to 3% by weight, preferably 0.5 to 2% by weight, based on the total weight of the prescription components.
Is.

In the cosmetics of the present invention, it is not necessary to add pigments to massage creams, cleansing creams, skin creams, skin milks, hair creams and the like, but foundation creams and liquid makeup bases further contain pigments in addition to the above components. Must be added and compounded. The pigment is used in an amount of 10% by weight or less, preferably 0.5 to 7% by weight, based on the total weight of the ingredients.

Examples of pigments include titanium oxide, kaolin, talc,
Inorganic pigments such as mica and iron oxide can be mentioned.

Further, if desired, a small amount of a cosmetic active ingredient, a fragrance, an antiseptic, a coloring agent, and a synthetic surfactant can be added.

Examples of the creamy or milky liquid cosmetics of the present invention include massage creams, cleansing creams, skin creams, skin milks, foundation creams,
It is applied to many creamy or milky liquid cosmetics such as liquid make-up base, hair cream for skin and hair.

The creamy or milky liquid cosmetic composition of the present invention acts mildly without irritating the skin and hair, and has good feel, moisturizing property, usability (exfoliation, spreading, etc.), and fine texture,
In addition, it has a good glossy appearance and is excellent in emulsion stability and storage stability.

Examples will be described below.

The parts shown in the examples mean parts by weight. The characteristics of the emulsified cosmetics shown in the examples; appearance (skin texture, gloss), usability (stretching, spreading, etc.), touch effect, etc. were examined by three specialist inspectors. The skin is judged with the naked eye, and the gloss is JIS-Z-8741-1.
It was measured according to Method 2 of 962 Glossiness Measurement Method. Regarding the feel effect, the sample composition was examined for the feel on application to the skin and the finish after application. Usability (stretching, stretching, etc.) was judged by actually seeing with a finger.

Example 1 (skin cream) (1) Formulation 1-palmitoyl-3-glycerylphosphorylcholine 3 parts Liquid paraffin 50 parts Cetyl alcohol 5 parts Methyl paraoxybenzoate 0.2 parts Perfume 0.2 parts Purified water 41.6 parts (2) Manufacturing method The oily component is uniformly dissolved at about 80 ° C. (Solution 1). The water-soluble components and the above components are uniformly dissolved at about 80 ° C. (Solution 2). Next, while stirring Solution 2 with a homomixer, Solution 1 is added and emulsified, and then cooled. The components were added at 70 ° C. during the cooling process, and the temperature was lowered to 30 ° C., after which stirring was stopped.

The skin cream thus obtained is an O / W type emulsion and has good appearance such as texture and gloss (glossiness = 90%), and also has good feel, moisturizing property and usability (stretching, spreading, etc.).
It was extremely stable after storage for 4 months in a constant temperature bath at ℃. Further, at 5 ° C. and 30 ° C., it was extremely stable even after 6 months. Furthermore, neither alteration nor odor occurred.

Comparative Example 1 Instead of 1-palmitoyl-3-glycerylphosphorylcholine, phosphatidylcholine (1-palmitoyl-2
-Oleoyl-3-glycerylphorfolylcholine) was used to prepare a comparative skin cream as in Example 1. As a result, the obtained skin cream was an O / W type emulsion and had very rough texture, poor gloss (glossiness = 50%), and poor cream removal. When it was stored for 4 months in a constant temperature bath at 40 ° C., it was separated into two layers and the emulsion stability was poor and the quality was altered (colored).

Comparative Example 2 A comparative skin cream was prepared in the same manner as in Example 1 except that soybean lecithin was used instead of 1-palmitoyl-3-glycerylphosphorylcholine. As a result, the obtained skin cream was a W / O type emulsion and had very rough texture and was not smooth. When it was stored for 4 months in a constant temperature bath at 40 ° C, it was partially separated into two layers. Furthermore, the color changed to brown, and a strange odor also occurred.

Example 2 (Skin cream) A skin cream was prepared according to Example 1 with the formulation based on Table 1. The characteristics of each cream thus obtained are shown in Table 2.

From Table 2, a good cream was obtained with 0.01 to 10% by weight of 1-stearoyl-3-glycerylphosphorylcholine. On the other hand, if it is less than 0.01% by weight, it does not emulsify, and if it exceeds 10% by weight, the gloss and feel become poor and it becomes difficult to use. As is clear from this result, monoacyl-3-
Good skin creams were obtained when the amount of glycerylphosphorylcholine was 0.01 to 10% by weight (preferably 1 to 5% by weight).

Example 3 (cleansing cream) A cleansing cream was prepared in the same manner as in Example 1 except that the weight part of the liquid paraffin used in Example 1 was changed. The characteristics of each cream thus obtained are shown in Table 3. As is clear from this result,
The amount of the oily substance is 10 to 80% by weight (preferably,
20 to 60% by weight) gave a cleansing cream having good appearance, feel, emulsifying property and storage stability.

Example 4 (skin milk) (1) Formulation Cetyl alcohol 5.0 parts Octyldodecyl myristate 1.5 Liquid paraffin 20.0 Xanthan gum 2.0 2-Palmitoyl-3-glycerylphosphorylcholine
3.0 Methyl para-oxybenzoate 0.2 Perfume 0.2 Purified water 68.1 (2) Manufacturing method Dissolve the above-mentioned oily components (1) to about 80 ° C. uniformly (solution 1). The water-soluble components (1) and (2) are uniformly dissolved at about 80 ° C. (solution 2). Next, while stirring Solution 2 with a homomixer, Solution 1 was added, emulsified, and then cooled. The components were added at 70 ° C. during the cooling process, and the temperature was lowered to 30 ° C., after which stirring was stopped.

The skin milk thus obtained is an O / W type emulsion and has a good appearance such as texture and gloss (glossiness = 86%).
It has a good feel (skin familiarity, finish), moisturizing property, and usability (extension), and was extremely stable in a constant temperature bath at 40 ° C for 2 months and after storage. Further, it was extremely stable at 5 ° C. and 30 ° C. even after 4 months. Furthermore, neither alteration nor odor occurred.

Example 5 (Hair Cream) (1) Formulation Cetyl alcohol 1.5 parts Microcrystalline wax 5.0 Beeswax 2.5 Glycerin monostearate 1.0 Liquid paraffin 40.0 2-Stearoyl-3-glycerylphosphorylcholine
3.0 Methyl paraoxybenzoate 0.2 Perfume 0.2 Purified water 46.6 (2) Manufacturing method The oily ingredients ~ of the above ingredients are uniformly dissolved at about 80 ° C (solution 1). The water-soluble components and the above components are uniformly dissolved at about 80 ° C. (Solution 2). Next, while stirring Solution 2 with a homomixer, Solution 1 was added, emulsified, and then cooled. The components were added at 70 ° C. during the cooling process, and the temperature was lowered to 30 ° C., after which stirring was stopped.

The hair cream thus obtained is an O / W type emulsion and has an appearance such as skin texture and gloss (glossiness = 93%), is easy to apply to hair and scalp, has good familiarity, and has made the hair very soft. . It was stable after storage in a constant temperature bath at 40 ° C for 2 months. At 5 ° C and 30 ° C, it was stable even after 5 months, and neither deterioration nor odor occurred.

Example 6 (Foundation cream) (1) Formulation Liquid paraffin 45.0 parts Ceresin 5.0 Glycerin monostearate 1.0 1-palmitoyl-3-glycerylphosphorylcholine
3.5 Methyl paraoxybenzoate 0.2 Titanium oxide 2.5 Kaolin 1.2 Talc 1.3 Yellow iron oxide 0.3 Purified water 40.0 (2) Production method Same as in Example 5.

The foundation cream thus obtained is an O / W type emulsion and has a good appearance, feel, moisturizing property and usability.
It was stable in a constant temperature bath at 40 ° C. even after 2 months, and extremely stable at 5 ° C. and 30 ° C. after 6 months. Furthermore, neither alteration nor odor occurred.

Continuation of front page (56) Reference JP-A-57-136514 (JP, A) JP-A-58-51853 (JP, A) JP-A-55-153713 (JP, A) JP-A-59-122423 (JP , A) JP-B-46-13263 (JP, B1) US Pat. No. 3652397 (US, A) JP-A-61-112007 (JP, A) JP-A-59-193812 (JP, A) JP-A-59-10511 (JP, A) JP-A-61-186305 (JP, A) Edited by the Chemical Dictionary Dictionary, "Chemical Dictionary 9" Kyoritsu Shuppan Co., Ltd. 604-605 (1972) J. Am. Oil Che mist's Soc. 1976 June (Vol. 53) P. 425-427

Claims (3)

[Claims] 1. In an emulsified cosmetic composition comprising a phospholipid-containing emulsifier, an oily substance, and water as main constituents, the phospholipid is substantially 1-palmitoyl-3-glycerylphosphorylcholine, 2-palmitoyl-3-glyceryl. An emulsion cosmetic comprising at least one monoacyl-3-glycerylphosphorylcholine selected from the group consisting of phosphorylcholine, 1-stearoyl-3-glycerylphosphorylcholine, and 2-stearoyl-3-glycerylphosphorylcholine. 2. The emulsified cosmetic composition according to claim 1, wherein the amount of monoacyl-3-glycerylphosphorylcholine is 0.01 to 10% by weight. 3. The emulsified cosmetic composition according to claim 1, wherein the amount of the oily substance is 10 to 80% by weight.