JPS58163430A - Emulsifier composition - Google Patents

Abstract

PURPOSE:To availably utilize an emulsifier composition obtained by containing polyhydric alcohol, alginic acid or a salt thereof and an oil phase component in cosmetics or pharmaceuticals. CONSTITUTION:An emulsifier composition is prepared by containing alginic acid or one kind or more salt thereof, water soluble polyhydric alcohol having two or more hydroxyl groups in the molecule thereof (e.g., ethylene glycol) and an oil phase component (e.g., tallow). In addition, according to necessity, water is added to the above mentioned composition. Because thus obtained emulsifier composition is a uniform transparent or translucent gel or viscous liquid, it can be directly and suitably used in various fields such as food, cosmetics or feedstuff, for example, as a sun-care gelly, a beauty liquid, an edible jelly a medical jelly or a lubricant.

Description

Detailed Description of the Invention The present invention aims to effectively utilize alginic acid, a natural polysaccharide extracted from seaweed, as an emulsifier in cosmetics, medicines, etc. The present invention provides an emulsion composition obtained by containing an oil phase component and, if necessary, water, and an oil-in-water emulsion composition obtained by adding an aqueous phase component to this emulsion composition.

In recent years, much research has been conducted on emulsification, many emulsifiers have been developed, and emulsification technology has made remarkable progress - extremely stable emulsions. has been widely used in all industries. However, most of them are nonionic surfactants containing polyoxyethylene chains, anionic surfactants such as fatty acid soaps, cationic surfactants, and amphoteric surfactants, which are used as emulsifiers and are harmful to the human body. The safety of many products is questionable.

On the other hand, the use of natural polymers as emulsifiers has been studied in recent years, and has been used industrially as an emulsifier in the production of oil-in-water emulsion compositions. However, natural water-soluble polymers have a lower ability to reduce interfacial tension than the so-called "surfactants" such as the nonionic surfactants mentioned above, so their emulsifying power is relatively small, and the emulsified particle size is generally It is an emulsifier that has a rough viscosity of approximately 0.5 μm, and its stability over time is stabilized by the thickening effect of the polymer.

Therefore, the present inventors researched the development of an emulsion with uniform and fine particles by using a natural substance that is highly safe for the human body as an emulsifier. We have discovered a new emulsifying composition. That is, according to the present inventors, it exhibits excellent emulsifying power for the oil phase and forms a uniform and stable emulsion.

That is, by combining a polyhydric alcohol that does not dissolve in oil, one or more types of alginic acid or its salts, and water as necessary, and adding an oil phase component to these,
It has been discovered that an emulsion composition in which oil phase components are solubilized or uniformly dispersed as a microemulsion in polyhydric alcohol or water can be obtained, and furthermore, by adding water to this emulsion composition, uniform fine particle dispersion can be obtained. The present inventors have discovered that a stable oil-in-water emulsion composition can be obtained, and have completed the present invention.

The emulsion composition obtained by the present invention is a transparent or translucent viscous liquid or gel, and the oil-in-water emulsion composition with water added is an emulsion of milky white fine particles. This cannot be achieved by the conventional polymer emulsification method, which involves dissolving a water-soluble polymer in water and then emulsifying and mixing the oil phase components.

The reason for this microparticle formation is thought to be that the polyhydric alcohol interacts with alginic acid or one or more of its salts, and the oil phase components are efficiently encapsulated in the polyhydric alcohol or polyhydric alcohol aqueous solution. .

The polyhydric alcohol used in the present invention is a hydrophilic polyhydric alcohol containing two or more hydroxyl groups in the molecule, such as ethylene glycol, propylene, glycol, 1.3-
butylene glycol, 1,4-butylene glycol, dibutetrapyrene glycol, glycerin, and polyglycerols such as diglycerin, triglycerin, and tetraglycerin, glucose, maltose, maltitol, sucrose,
These include fructose, xylitol, sorbitol, maltotriose, threitol, erythritol, starch decomposition axis, starch decomposition sugar reducing alcohol, and the blending amount thereof is preferably 2 to 95 wt%.

As the alginic acid in the present invention, sMILCrOC
7BtLBde fyrifera SLam1naria digit
ata %Lam1naria 5accharina
It is a polyuronic acid consisting of β-D-mannuronic acid extracted from seaweeds such as , inorganic bases such as calcium hydroxide, aluminum hydroxide, basic amines, etc. are used, and the amount of neutralization may be arbitrary.

The salt may not only be produced in advance, but may also be produced during the process of producing the emulsion composition. The weight ratio of alginic acid or its salt to polyhydric alcohol is 1 = 2 to 1.
000 is preferred.

When water is added to a polyhydric alcohol and one or more alginic acid or its salts as necessary, the amount used is within the range of 10% of the weight of the polyhydric alcohol, and the total amount is 1.
It is preferable that it is 0 W% or less.

Oil phase components include animal and vegetable oils and hydrocarbons such as beef tallow, squalane, olive oil, jojoba oil, and rice bran oil;
Liquid paraffin, mineral oils such as petrolatum, isopropyl myristate, pentaeri (see margins below), ester oils such as Stolltetra-2-ethylhexanate, 2-hebutyl undecyl palmitate, vitamin A nozerumitate, vitamin E acetate, etc. Therefore, silicone oils such as tylphenyl silicone and dimethyl silicone are used as oil components, which are commonly used in the cosmetics, pharmaceutical and food industries. Alternatively, it is desirable that the total amount used, including two or more types and water as necessary, is 20 wt 1 or more.

Depending on the purpose of use, a nonionic surfactant, an anionic surfactant, an amphoteric surfactant, and a cationic surfactant may be mixed and added. Furthermore, alcohol, fatty acids, other water-soluble polymers, etc. may be added for the purpose of substance stabilization, viscosity adjustment, etc.

The emulsified composition obtained here is a uniform, transparent or translucent gel or viscous liquid, so it can be used as it is, for example, in sun care jelly, beauty serum, edible jelly, medicated jelly, lubricating oil. As food, cosmetics, etc.
It can be suitably used in all fields including feed.

(Left below) Next, one or more of the above alginic acids or their salts, a water-soluble polyhydric alcohol having two or more water groups in the molecule, an oil phase component, and optionally An oil-in-water emulsion composition that further contains an aqueous phase component in an emulsion composition that contains water will be described.

The oil-in-water emulsion composition according to the present invention can be obtained by gradually adding an aqueous phase component to the emulsion composition. In this case, it is of course preferable to perform homomixer treatment. The oil-in-water emulsion composition obtained here has extremely excellent stability.

Regarding the quantitative relationship between the emulsifying composition and the aqueous phase components, it is possible to produce emulsions in an extremely wide range of ratios, and by diluting 5 to 80 parts of the emulsifying composition with 95 to 2 D parts of the aqueous phase components. Fine particles are dispersed to prepare a stable oil-in-water emulsion composition.

Water phase components include wetting agents, water-soluble vitamins, water-soluble preservatives,
Water-soluble drugs, water-soluble polymers, and other water-phase components commonly used in the cosmetics, pharmaceutical, and food industries are dissolved in water.

The oil-in-water emulsion composition obtained here is a milky white, viscous or low-viscosity liquid in which fine particles are dispersed, so it can be used as it is, and can also be used for homogeneity stabilization and viscosity adjustment. Alternatively, water-soluble polymers, drugs, surfactants, etc. can be added to give emulsions, creams, and foundations a medicinal effect. The present invention will be explained below with reference to Examples and Comparative Examples. .

Examples 1 to 9, Comparative Examples 1 to 3゜Alginic acid, sodium alginate, calcium alginate, polyhydric alcohol, purified water and oil were blended in the composition and amounts shown in Table 1, and treated with a homomixer at 70'C. An emulsified composition was prepared. Furthermore, in this emulsified composition,
An oil-in-water emulsion composition was prepared by adding 10 times the amount of water to the solution while stirring at room temperature. The states of the emulsified composition and oil-in-water emulsified composition were observed, and the results are shown in Table 1.

Note that the numbers for each component are parts by weight.

As is clear from the table, a stable transparent or translucent viscous liquid or gel was obtained, and a stable oil-in-water emulsion composition was also obtained.

(The following is a blank space) Table 1 Table 1) The condition of the oil-in-water emulsion composition was evaluated based on the following criteria after being left for one day.

◎ Emulsified particle size 1μ or less 0 1-5μ △ 5-10 μ×10μ or more Example w Suncare oil (A) Purified water 1. o(w
t%) Sodium alginate 2pO glycerin 40.0 Maltitol
144(B) Olive oil
3α0 liquid paraffin 1α0
UV absorber 2° preservative. 3 fragrances
Add α3 to phase (A) with stirring. This was treated with a homomixer, stirred and cooled to obtain sun care oil. This sun care oil was in the form of a transparent liquid, highly safe and stable, and had UV protection effects.

Example U Nutritional emulsion (A) Glycerin 20.0 (
wt%) Alginic acid zO L-arginine α3(B) NM oil 1α0 squalane
3,0 glycerol tristearate 3
．． 0 Vaseline 2+O preservative
0.4 fragrance
0.2 (0) Purified water
5B, 9 Carboxyvinyl Polymer 0.2 Example According to the production method described above, an emulsion composition was obtained from (A) and (B), and the temperature was adjusted to 70°C, and a carboxyvinyl polymer aqueous solution was separately adjusted and maintained at 70°C. After dilution and dispersion with (0), the mixture was cooled to obtain a nutritional emulsion as an oil-in-water emulsion.

It was stable in the range of 0.05 to 2.mu. and had an excellent feel when used.

Implementation side Pine surge cream (A) Sorbitol 2α0 (w
t%) Maltitol 50 Potassium alginate 30 (B) Liquid paraffin 45.0 Paraffin wax
5.0 Preservative 04
Fragrance α2 (0) Purified Water 209 Carboxyethyl Cellulose The pine surge cream was stable with a value of 0505 to 2μ and showed little change in spread during pine surge.

patent applicant Shiseido Co., Ltd. Procedural amendment (Chemufu) Mr. Kazuo Wakasugi, Commissioner of the Patent Office L Incident display 1981 Patent Application No. 46881 2 Name of the invention emulsifying composition 3. Person who makes corrections Date of this amendment order

Claims (2)

[Claims] (1) An emulsified composition comprising one or more alginic acids or salts thereof, a water-soluble polyhydric alcohol having two or more hydroxyl groups in the molecule, and an oil phase component. (2) Consists of an emulsified composition containing one or more alginic acid or its salts, a water-soluble polyhydric alcohol having two or more hydroxyl groups in the molecule, an oil phase component, and an aqueous phase component. An oil-in-water emulsion composition characterized by: