JPS596938A - Emulsifying composition - Google Patents

Abstract

PURPOSE:To obtain an emulsifier composition excellent in emulsifiability and having thickening effect, obtained by adding water containing higher alcohol to an emulsifier composition containing an ionic surfactant, a water soluble polyhydric alcohol and an oil phase component. CONSTITUTION:An emulsifier composition containing an ionic surfactant (e.g., alkylamine salt), a water soluble polyhydric alcohol having two or more hydroxyl groups in the molecule thereof (e.g., glycerine) and an oil phase component (e.g., tallow) is mixed with water containing 10-30C higher alcohol (e.g., lauryl alcohol) to obtain an oil in water type emulsifier composition. In this case, the using amount of the ionic surfactant and polyhydric alcohol is pref. within a range of 1:0.5-1,000 on the basis of a wt. ratio and the total amount of polyhydric alcohol and the ionic surfactant is pref. adjusted to 0.1 or more on the basis of a wt. ratio with respect to the oil phase component 1. In addition, the compounding amount of higher alcohol is pref. 0.1-20% of the oil in water type emulsifier composition.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention uses an ionic surfactant and a higher alcohol to provide an emulsifying composition that has excellent emulsifying properties and also has a thickening effect.

Ionic surfactants are widely used as detergents, foaming agents, and dispersants1, but are rarely used alone as emulsifiers. This is because ionic surfactants generally have high H, TJ, B, (hydrophilic-hydrophobic balance),
This is because it is difficult to make a stable emulsion due to its extremely strong hydrophilic properties. However, even in a low concentration aqueous solution of 5% or less, ionic surfactants have thixotropic properties and are stable and usable. Because it forms a gel with good texture, it is widely used as a usability modifier in cosmetics and the like.

Conventionally, attempts have been made to use ionic surfactants as emulsifiers. For example, when an ionic surfactant is added to glycerin and emulsified with oil, a transparent gel-like emulsion composition with good stability is created. McMa that you can get things
reported by Hon et al.

[Journal φ of F7-Mathematical Science (J, Pharm, Sci, ) Volume 52] 1
63, 1963> However, when this method is applied to obtain an oil-in-water emulsion composition by forming an oil-in-glycerin emulsion composition and diluting it with water, a very stable emulsion of fine particles is obtained. is obtained, but the thickening effect described in OiJ is not exhibited,
It is difficult to obtain viscosity.

On the other hand, it is known that when a small amount of a higher alcohol is used together with an active agent, mixed micelles are formed and a synergistic thickening effect is observed. This is applied when forming an oil-in-glycerin emulsion composition as described in Section 2; The oil-in-water emulsion composition obtained by adding water is a very stable emulsion of fine particles, but as with the case without higher alcohol, it is extremely viscous. It was something that didn't exist. In glycerin-based emulsification, this is the world [m
This is thought to be because the active agent is selectively oriented to the interface, and the higher alcohol is not oriented to the interface but dissolves in the oil phase component.

The present inventors believe that it is useful to emulsify an oil phase using only an ionic surfactant with low viscosity properties from the viewpoint of safety and the properties of the emulsified composition, and have worked diligently to solve the above-mentioned drawbacks. As a result of repeated research, an oil-in-water emulsion composition obtained by adding water containing a higher alcohol to an emulsion composition containing an ionic surfactant, a water-soluble polyhydric alcohol, and an oil phase component, It was discovered that it has fine particles with very good stability and also has a thickening effect, and based on this knowledge, the present invention was completed.

That is, the present invention provides an emulsifying composition containing an ionic surfactant, a water-soluble polyfill alcohol having two or more hydroxyl groups in the molecule, an oil phase component, and a higher emulsion composition having a carbon number of ]0 to The present invention provides an oil-in-water emulsion composition obtained by mixing water containing alcohol.

The essential components constituting the emulsified composition of the present invention are known,
The combination is also not particularly new, but first an oil-in-polyhydric alcohol emulsion composition is produced, and later,
Mixing this with an aqueous phase component containing a higher alcohol is a new method that would not normally be considered, and is a feature of the present invention (j
It's right there.

The water-soluble polyhydric alcohol used in the present invention is a water-soluble polyhydric alcohol containing two or more hydroxyl groups in the molecule, such as ethylene glycol, brohylene glycol,
]3-butylene glycol], ]4-butylene glycol dipropylene glycol, glycerin, diglycerin, triglycerin, polyglycerin such as tetraglycerin, glucose, maltose, maltitol, Htf
J, fructose, xylitol, sorbitol, maltotrimace, threitol, erythritol, starch decomposition sugar, starch decomposition sugar reducing alcohol, etc., and one or more of these may be used.

The blending amount is 1 to 60% (hereinafter referred to as
%) is preferred.

The ionic surfactant used in the present invention is a surfactant that dissociates into ions when dissolved in water, and may be any of anionic surfactants, cationic surfactants, and amphoteric surfactants; - A species or two or more species can be arbitrarily selected and used. Examples of anionic surfactants include fatty acid soaps, ether carboxylic acids and their salts,
Ester carboxylic acids and their salts, reaction products of amino acids and fatty acids, carboxylates of oligopeptides containing basic amino acid residues and fatty acids, alkyl sulfonates, alkenesulfone a salts, IIR II/j
Sulfonate of acid ester, sulfonate of fatty acid amide, alkyl sulfonate and its 4-sulma-1-non-a
sulfonic acid salts of compounds, alkyl salts, secondary higher alcohol sulfate ester salts, alkyl and allyl ether sulfate ester salts, sulfuric ester salts of fatty acid esters, sulfuric ester salts of fatty acid a) lechylamide, funnel oil, etc. [σ] Phosphate salts such as sulfuric acid ester salts, alkyl phosphates, ether phosphates, alkyl allyl phosphates, and amide phosphates can be mentioned.

(Left below) Cationic surfactants include alkyl amine salts, amine salts such as polyamines and amino alcohol fatty acid derivatives, alkyl quaternary ammonium salts, aromatic quaternary ammonium salts, pyridinium salts, imidazolim salts, etc. Examples of the amphoteric surfactant include lecithin, phospholipid salts such as sphingomyelin, hetain 1-aminocarboxylate, imidacillin derivatives, and the like.

The above fatty acids, alkyl, and allyl groups have 6 carbon atoms.
-30 is preferable, and it may be linear or branched.

Furthermore, it does not matter whether the fatty acid is saturated or unsaturated.

The above-mentioned ionic surfactants ionize when they become salts, but the salt formation occurs either when they are added as salts during the production of emulsion compositions, or when they are added as salts during the production process of emulsion compositions. Also good. Among salt-forming substances, lithium hydroxide,
Sodium hydroxide, potassium hydroxide, cesium hydroxide
Inorganic bases such as ammonium hydroxide, basic amino acids such as arginine, lysine, histidine, ornithine, and basic secondary peptides containing these as residues, basic amines such as monoethanolamine, jetanolamine, triethanolamine, etc. bases such as, inorganic acids such as hydrochloric acid and sulfuric acid, organic acids such as acetic acid, citric acid, maleic acid, and fumaric acid, acidic amino acids such as glutamic acid and aspartic acid, and acidic secondary peptides having these as residues, etc. acid is used.

In addition, pll of the emulsified composition has an anionic surface activity ρ1
It is preferable that it is 1.

The amount of ionic surfactant and polyhydric alcohol having two or more hydroxyl groups in the molecule should be determined based on the weight ratio, and it becomes difficult to dissolve the ionic surfactant, and if it exceeds 1,000, the emulsion stability will decrease. Deteriorate.

The oil phase components used in the present invention include animal and vegetable oils such as beef tallow, squalane, olive oil, jojoba oil, and rice bran oil, hydrocarbons, liquid paraffin, mineral oils such as petrolatum, isopropyl myristate, pentaerythritol tetra-2-ethyl Hekyokunate, 2-hebutyl undecyl palmitate, vitamin A palmitate, vitamin E
These are oils and oil-soluble drugs that are commonly used in the cosmetics, pharmaceutical, and food industries, such as ester oils such as acetate, silicone oils such as methylphenyl silicone, and dimethyl silicone.

It is desirable that the total amount of polyhydric alcohol and ionic surfactant be at a weight ratio of 01 or more with respect to the air-oil phase components.

The higher alcohol used in the present invention is a higher alcohol having 10 to 30 carbon atoms, such as lauryl alcohol, myristyl alcohol, heptyl alcohol, stearyl alcohol, oleyl alcohol, instearyl alcohol, behenyl alcohol, etc., saturated or unsaturated. - Either a straight chain or a branched chain can be suitably used, and one or two pushers are selected and used.

The formulation of higher alcohol is preferably 0.1 to 2 n% of the oil-in-water emulsion composition consisting of ionic surfactant, polyhydric alcohol, MI+ phase component, water, and higher alcohol.

The oil-in-water emulsion composition according to the present invention can be obtained by mixing the named composition and an aqueous phase component containing a higher alcohol. In this case, it is preferable to perform pomomi serration treatment. The oil-in-water emulsion composition obtained here is extremely cheap and has thixotropic and viscous properties.

Regarding the relationship between the emulsifying composition and the aqueous phase components, it is possible to produce emulsions in a very wide range, but generally, 05 to 80 parts of the emulsifying composition and 995 to 995 parts of the aqueous phase components are used. Approximately 20 copies.

The higher al(1) added to the aqueous phase component may be added as is, or may be dissolved in mixed micelles with an ionic surfactant, a nonionic surfactant, etc.

Furthermore, the aqueous phase contains humectants, water-soluble hitamines, water-soluble preservatives, water-soluble drugs, water-soluble polymers, cosmetics, medical products, etc.
Water-soluble ingredients commonly used in the food industry can be blended within the range that does not impair the effects of the present invention.

The oil-in-water emulsion composition obtained here is a milky white viscous liquid or cream in which fine particles are uniformly dispersed, so it can be used as is or used for homogeneity stabilization, viscosity adjustment, or medicinal effects. In this sense, it can be suitably used in all sorts of fields, such as foods such as naze, with the addition of water-soluble polymers and drugs.

Next, the present invention will be explained in more detail with reference to Examples. The invention is not limited thereby.

Examples 1 to 3, Comparative Examples 1 to 3, Ionic surfactant, polyhydric alcohol, water, and oil phase components were blended with the composition shown in Table 1 to produce emulsified compositions. . Comparative example 1 is a normal reactive emulsification method,
The oil phase (0) containing fatty acids and higher alcohols was heated at 70°C.
The aqueous phase (A) containing a base was stirred and mixed to 70''C to emulsify.

Furthermore, after the pomomi key treatment, the emulsified composition was cooled to complete the emulsion composition. Examples 1 to 3 and Comparative Examples 2 and 3 are basically the same as -C, polyhydric alkyl: 1-al phase (
Keep E) at 70°C and add oil phase (0) to the knead.
Gradually add C while stirring and treat with pomomi key to form a viscous I Hideaki or translucent gel.
Ru. Furthermore, this gel was added to the aqueous phase or stone phase (A) with ro''C, and after homogenization, A in cold #IL water was added.
An i-type emulsion composition was obtained. Here, cetanol was blended in the aqueous phase (A) in Example 1.2.3, and in Comparative Example 2/
111 phase, and in Comparative Example 3, polyhydric alkaline; blended in J-L phase (B). It was evaluated and recorded in Table-1. In the conventional reaction emulsification method of Comparative Example 1, the emulsion 'l=k r- was coarse and the viscosity was low, and in Comparative Example 2.3, the emulsified particles were fine but the viscosity was very low. Met. On the other hand, in Examples 1 to 3, in which higher alcohol was added to the aqueous phase (A), the emulsified particles were very fine. In addition, an in-water hII type whey emulsion composition was obtained in which the thickening effect of the higher alcohol was sufficiently exhibited and the condition and stability were good, and it could be suitably used as it was as a milky lotion or a cream. .

Example 4 Emollient emulsion (% by weight) (A) Purified water 530 Sodium chondroitin sulfate 02 Adenone phosphoric acid 02 Stearyl alcohol 1O Sodium hehenate
lO Sodium Isostearate
05(E) Pharmacopoeia glycerin
10.0 Dipropylene glycol 5゜Stearic acid 1.0゛L-
Arginine 01(0) Squalane 10.0 Jojoba oil
10.0 Vaseline
50 Vitamin A Balmidate
10α-tocopherol
]0 preservative 0
5 Fragrance 05 Example 1
An emollient emulsion was obtained by the same manufacturing method as described above. This emollient emulsion had a good feeling of use with a stain characteristic of 30'C viscosity.

(The following is a blank space) Example 57. Surge cream (wt%) (A) Purified water 13
4Behenyl alcohol 30 (
B) Glycerin 2001
．． 3 Butylene gellicol 50 Purified water 5. .

Palmidic acid lysine salt 10 Behenic acid lysine salt 20 (0) Liquid paraffin 30.0 Glycerol tri2-ethylhexanol 10.
0 Glycerol Tristearate 50 Vaseline 50
Preservatives 03 Flavorings
0.3 Pine surge cream was obtained by the same manufacturing method as in Example 1. This cream has a hardness of δ°C]
4, it was a stable oil-in-water emulsion composition with an emulsion particle size of about 1 μm, and had a feeling of use with little change in spreadability depending on the number of pine surges when applying pine surges to the skin.

Example 6 Cream rinse (wt%) (A) Purified water 81
6 Cetyltrimethylammonium chloride
1.0 cetostearyl alcohol
10 Methylparaben 01
CB) Glycerin 50
Cetyltrimethylammonium chloride
10(C) 2-octyldodecanol
100 fragrances
0.3 By the same manufacturing method as Example 1,
I got a cream rinse.This rinse has a viscosity of 5 at 30℃.
500 cps, it was a stable oil-in-water emulsion composition with an emulsion particle size of about 1 μm, and had an excellent rinsing effect.

Example 7 Urea cream (heavy (11%)) (A) Purified water 27
9 Urea 10.0 Cedyl Alcohol zO Stearyl Alcohol zO Triethanolamine Stearate 05(B)
Maltitol (50% aqueous solution) 2
00 diglycerin 10.
0 lecithin zO(
C) Olive oil 20
0 Vaseline 5
．． 0 preservatives 03 fragrances
03 Urea cream was obtained by the same manufacturing method as in Example 1. This cream was a stable cream with a 25"C hardness of 11 and an emulsion grain size of 1 to 3 microns, and was expected to have an effect on improving rough skin.

patent applicant Shiseido Co., Ltd.

Claims (1)

[Claims] 1. An emulsifying composition containing an ionic surfactant, a water-soluble polyhydric alcohol having two hydroxyl groups in its molecule, an oil phase component, and a high-grade emulsion composition having a carbon number of ], 0-V. An oil-in-water emulsion composition obtained by mixing alcohol with water.