| 摘要 |
PROBLEM TO BE SOLVED: To provide a compounded aqueous gel formed by interacting a specific ionic amphiphilic polymer with an amphoteric ionic polymer and having thixotropic property, a gelled preparation containing the compounded aqueous gel, a skin preparation for external use and cosmetic, and also the compounded aqueous gel, without a fear of getting the breakage of the gel structure caused by a cationic component, pH buffer, salt such as sodium chloride and powdery material such as titanium oxide, iron oxide, etc., safe for the skin, even on adjusting pH in the vicinity of 3-5.5, capable of maintaining a high viscosity and the thixotropic property, a gelled preparation containing the compounded aqueous gel, the skin preparation for external use and cosmetic. SOLUTION: This method for obtaining the compounded aqueous gel is characterized by making the ionic amphiphilic polymer interact with amphoteric ionic polymer for compounding to obtain the compounded aqueous gel. COPYRIGHT: (C)2006,JPO&NCIPI
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