JPS5864128A - Alcohol-containing aqueous gel composition - Google Patents

Abstract

PURPOSE:To obtain nontoxic cosmetics having a good feel, by using polyglycerin isostearate as the gelling agent of an alcohol-containing aqueous gel composition. CONSTITUTION:As the gelling agent of an alcohol-containing aqueous gel composition containing water and lower alcohol, polyglycerin isostearate prepared by reacting 1-3mol ratio isostearic acid with polyglycerin comprising 5-6 glycerine monomers is used. Thus obtained composition used in cosmetics such as a lotion or a milky lotion or in a pharmaceutical product such as cream and has a good feel and is nontoxic.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an alcohol-containing hydrogel composition, particularly a gelling composition using polyglycerol isostearate as a gelling agent. Various gelling compositions have been used. Organic compounds used for this purpose include natural polymers and their derivatives, synthetic polymers, aromatic aldehydes, polyhydric alcohol derivatives, surfactants,
Various compounds such as fatty acid amides and metal soaps are used depending on the purpose.

It is natural that safety is emphasized in the case of cosmetics and pharmaceuticals, but when using gel-like compositions, it is difficult to use hard gels such as agar gel, so it is necessary to have an appropriate viscosity. It was desired that the gel be a highly viscous gel or a medium gel that has a transparent feel and does not have a slimy feeling when used.

With conventional gelling agents, gelling compositions using polymer compounds leave a slimy feeling, which is undesirable, and gel compositions based on surfactants are generally used.

It was used for this purpose. For example, among methods using polyethylene oxide higher alcohol ethers, fatty acid esters, and M fatty acid jetanolamide, methods using glycyrrhizinate, etc. are effective. However, depending on the use of the gel composition, a relatively high concentration of alcohol When it is necessary to formulate a hydrogel composition containing , peptization occurs frequently in the region of high alcohol content, and a gel tends not to form. In the formation of alcohol-containing gels, boroxamines are essential conductors for amines.
(Polexamln) [for example, BASF Polex
Even when using [Ozamlne], it is said that it is desirable to keep the alcohol content to 1:1 or less.

Various mechanisms of gel formation in aqueous systems have been proposed;
In the case of compounds containing an -thyl bond.

It is thought that the concentration of ether-type compounds to which water protons are coordinated reaches the critical micelle concentration to form macelle, and the water molecules in the micelles are fixed by hydrogen bonds to form a gel. The physical properties are significantly controlled by the number of groups and the number and shape of the organic groups bonded thereto.

Therefore, the structure of the ether bond-containing compound and the number, shape, structure, etc. of the organic groups bonded to it govern the coordination of water molecules and the cell-forming property, so the gel-forming property may change significantly in terms of physical properties, etc. is assumed.

In the case of polyglycerin, which has been widely considered as a food additive, the commonly known ingredients stearic acid, oleic acid, and oleic acid are commonly used. Fatty acid esters such as thenic acid and lauric acid are effective as emulsifiers, but cannot be expected to have the gelling properties that are the objective of this application.In addition, commonly known isostearate esters can also be used for similar purposes. However, it was not known that they also had gelling properties.The present inventors have been conducting research on the synthesis and utilization of these various fatty acid esters, and as part of this research, Research on its use in the preparation of alcohol-containing hydrogel compositions, particularly aqueous gel compositions containing alcohol at concentrations of mouth or higher, has shown that among the various HtFFII esters, polyglycerol instearate has the best gelling properties. Therefore, the present invention provides an alcohol-containing gel composition containing polyglycerol isostearate, water, and a lower alcohol.

In the present invention, the polyglycerol inostearate is! A compound found by reacting isostearic acid at a molar ratio of /-J with polyglycerin consisting of glycerin having a mass of ~ is different from other esters, and it gels well in high alcohol aqueous solutions and high alcohol water-containing compositions. It is preferable to use % as a property.

Even with the same amount of polyglycerin, esters obtained by reacting 3 moles or more of isostearic acid, and esters obtained by reacting 7 to 3 moles of isostearic acid with polyglycerin or diglycerin of BxJ to BxJ, have similar gelation. Although the expression and mechanism of the unique gelling property of the ester of this application are not clear, it is important to understand the balance between the number of ether groups, the number of residual hydroxyl groups, and the skeletal structure and number of bonded organic groups. I assume this is because it is good.

1 to 3 moles of isostearic acid! When ~ is reacted with a polymer of polyglycerin, a conventional method is used, for example, using a basic catalyst such as potassium hydroxide, sodium hydroxide, or sodium carbonate in an inert gas. O-co 30″CK
It can be synthesized into J+ by heating. The product is a pale yellow viscous liquid, depending on the molar ratio of isostearic acid.
If the gel properties change, fi, /-2'E, le, it becomes a soft gel, but λ ~ 3 moles of ester tends to give a hard gel. Gel formation work is done using alcohol or an alcohol-containing composition. The desired gel can be obtained by heating and dissolving 2j to yo% or more of isostear monofluoric acid ester to the ioo portion, and then cooling the mixture.

In the present invention, ethyl alcohol,
Lower alcohols such as propyl alcohol and 7f alcohol are used.

According to the above-mentioned alcohol-containing gel composition according to the present invention, since the polyglycerol isostearate itself has oily properties, it may function as a hair styling agent or may further contain various polymeric compounds. By using a combination of seeds, the product can, for example, have greater hair styling power and can be used as a hair gel, or can be used well in lotions, creams, and emulsions.

Examples of such polymeric compounds include various waxes, liquid paraffin, silicone oil, animal and vegetable oils, ether phosphates, and cationic polymers.

Therefore, in addition to polyglycerol isostearate, water and lower alcohol, the present invention also includes wax, liquid paraffin, and silicone oil.

The present invention also provides an alcohol-containing hydrogel composition containing one or more kinds of polymer compounds consisting of animal and vegetable oils, ether phosphates, and cationic polymers.

According to the present invention, both products containing such a polymer compound and those not containing such a polymer compound do not contain conventionally used gelling agents such as the above-mentioned polyethylene oxide higher alcohol ether and have a slimy feel. It has a good feel and is particularly useful as a base material for cosmetics as mentioned above, as well as for ointments such as insect repellent creams and other pharmaceutical products, or as a softening agent for those that do not contain polymeric compounds. It can be effectively used for various purposes such as food additives such as 〇 [Synthesis Example-1]! ~ Bulk polyglycerin! /j I, isostearic acid 3011 and lithium hydroxide t, tp in a reflux tube,
In addition to a four-way flask equipped with a thermometer, gas inlet tube, and stirrer, carbon dioxide gas was passed through it.

From 110℃! ”C/Heat it for 10 minutes and get it to O℃
After reaching this temperature, the reaction was completed for 30 minutes, and a pale yellow viscous liquid 1701 was obtained. The product exhibits the following properties.

Acid value 0. ! Saponification value tar Human a-xyl value air [Synthesis Example-2] Polyglycerin with j ~! /! Li, 7-oti isostearate and lithium hydroxide! , 09 is reacted in the same manner as in [Synthesis Example-1] to form a pale yellow viscous liquid/100
1 was obtained. The product exhibits the following properties: 0 Acid @O9 Sansaponification value l Cocohydroxyl value Core 0 [Example-1] 31. Polyglycerol isostearate of Jwt@ ethanol water ts@IK synthesis example-l Add υ part, 3゜℃
When the mixture was uniformly dissolved and cooled, a transparent gel was formed.

6. This gel is stable up to 50°C. The chicken index at at'c was C, J was Ashi, and when used as a hair styling agent, there was no slimy feeling and the hair styling power% was O [Example-1] Synthesis example in Example-/ The gel prepared by adding the same amount of the polyglycerol isostearate of Synthesis Example-2 to the compound of -l had a transparent feel and was stable even at 0°C.
The thixotropic index at 3°C was J, f, and there was no slimy feeling and the hair styling ability was good [Example-3] 33. ．． 1qlt industrial tanol water tj
727,475 parts of cationic polymer (Mark Co., Ltd./DO) were mixed, and the polyglycerol instearate of Synthesis Example 7 was added to this, stirred in SSC to dissolve and cool. A gel with a texture was formed. This gel is stable even at Hiroshima S.C., with a chicken index of 30. It was t.

When this gel was used for hair styling, it had a smooth feel and good hair styling ability.

[Example-Hiroshi]

To tj parts of the 13.3% ethanol water used in Example No. 2, 5 parts of shark liver oil Stuff and ether phos 7ate (
Hoechst Co., Ltd. Hostafut KOJto) z part is mixed,
The polyglycerol isostearate of Synthesis Example 1 was added to this and dissolved by stirring at °C.

Upon cooling, a transparent gel was formed.

This gel was stable even at 0°C, and the thixotropic index of [Example-j] When camellia oil was used as a substitute for squalane in Example-3, a similar gel was formed. The thixotropic index of C was 0. When this gel was used for styling hair, it did not feel slimy, and when dried, it did not become sticky with cold water.

It was easy to calm down with shampoo.

Applicant's agent Kiyoshi Inomata

Claims (1)

[Scope of Claims] 1. An alcohol-containing hydrogel composition containing polyglycerin isostearate, water and a lower alcohol; and further comprising a wax. Alcohol-containing gel composition containing one or more types of high molecular compounds consisting of liquid paraffin, silicone oil, animal and vegetable oils, ether phosphates, and cationic polymers 03, polyglycerol isostearate ester consists of j-mer glycerin Alcohol-containing hydrogel composition 1 according to claim 1 or 2, which is a compound obtained by reacting isostearic acid with a ratio of /S-J to polyglycerin.