DIALKYLPHOSPHORIC ACID POLYALUMINUM SALT, OIL-GELLING AGENT COMPRISING SAID SALT AND EXTERNAL AGENT COMPOSITION CONTAINING SAID SALT

摘要

NEW MATERIAL:A dialkylphosphoric acid polyaluminum salt insoluble in aqueous solvents. USE:The salt is used as an oil-gelling agent for external agent compositions such as medicines, cosmetics, creases and paints. The salt imparts thixotropic rheological characteristics to oiling agents, it highly stable and transparent and has a good feeling of use and no stringiness. Further, the salt gives especially good results to make-up cosmetics such as foundations and to skin care cosmetics such as creams, oil-gelled cleansing creams and milky lotions. PREPARATION:The novel compound is obtained by reacting a dialkyl phosphate ester of formula I (R1 and R2 are 8-26C hydrocarbon group) or a salt thereof with a basic polyaluminum salt of formula II (X is an x-valent anion other than hydroxyl group; m is a positive integer and 3m=n+xl; k is 0 or a positive integer) in an aqueous medium.