ULTRAVIOLET LIGHT ABSORBER-INCLUDING MINUTE CAPSULE EXCELLENT IN LIGHT STABILITY

摘要

PROBLEM TO BE SOLVED: To provide ultraviolet light absorber-including minute capsules which is excellent in the light stability of the ultraviolet light absorber in the minute capsules prepared by using a polymer of an organopolysiloxane and a silylated peptide as a wall membrane and including a UV-A absorber and UV-B absorber. SOLUTION: This ultraviolet light absorber is provided by using 2-(4-diethylamino-2-hydroxybenzoyl) benzoic acid hexyl ester as the UV-A absorber and a para-methoxy cinnamic acid 2-ethylhexyl ester as the UV-B absorber and including them in the minute capsules obtained by using the polymer of the organopolysiloxane and silylated peptide as the wall membrane. The content of the 2-(4-diethylamino-2-hydroxybenzoyl)benzoic acid hexyl ester is preferably 1 to 36 mass% of the included total ultraviolet light absorbers. COPYRIGHT: (C)2009,JPO&INPIT