| 摘要 |
PROBLEM TO BE SOLVED: To provide an ultraviolet light-blocking base using an ultraviolet light absorbent having excellent ultraviolet light absorbing ability, excellent in transparency, insoluble in silicone oil, soluble in organic solvents and being solid at normal temperature. SOLUTION: The ultraviolet-absorbing composite powder is composed of composite powder particles in which (1) an ultraviolet absorbent (hereinafter referred to as insoluble ultraviolet absorbent) which is insoluble in silicone oil and soluble in organic solvents and solid at normal temperature is combined with (2) (a) a polymer which is soluble in organic solvents and/or (b) a fine-particle metal or fine-particle metal oxide having 1-1,000 nm primary particle diameter. COPYRIGHT: (C)2004,JPO
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