CALCIUM PHOSPHATE BASED COMBINED PARTICLE AND ITS PRODUCTION AND AEROSOL TYPE COSMETIC CONTAINING THE SAME

摘要

PROBLEM TO BE SOLVED: To obtain a deodorization active material suitable for an aerosol type cosmetic capable of exhibiting excellent antiperspirant action by solving problems such as the corrosion of aerosol cans when aluminum hydrochloride having excellent action effect as an antiperspirant is used as the antiperspirant. SOLUTION: A calcium phosphate based combined particle contains calcium phosphate based particle and aluminum hydrochloride and the calcium phosphate based particle is an amorphous calcium phosphate based particle. In the synthesis of the amorphous calcium phosphate based particle by adding a phosphoric acid aq. solution in a suspension containing 1-20 wt.% calcium hydroxide and adjusting pH 5-11, aluminum hydrochloride is added in an amorphous calcium phosphate slurry obtained by controlling the temp. of the suspension at the time of being synthesized not to exceed 50 deg.C, mixed and granulated while being dried. The aerosol type cosmetic contains the calcium phosphate based particle.