| 摘要 |
The present invention relates to an ultraviolet light curable coating composition having a shorter curing time and an excellent abrasion resistance, which comprises: (A) an aqueous-alcoholic base resin dispersion containing, based on the weight of the total solids present in the base resin dispersion, (a) 5 to 75% by weight of a colloidal silica and (b) 25 to 95% by weight of a partial condensate of a silanol of formula: R SI(OH)3 wherein R is a C1-6 alkyl, C6-20 aryl or hydroxy group; and (B) an ultraviolet light curable catalyst of formula Ar3S+MXn- wherein Ar3 is a triphenyl, tri(4-methoxy)phenyl, tri(3,5-dimethyl-4-hydroxyphenyl), diphenyl-2,5-dimethylphenyl or tri(4-methyl) phenyl group; and MXn- is a metallic halide anion.
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