Patent ID: 6680125
Filing Date: 2004-01-20
Classification: C09D,G02B,Y10S,Y10T

Abstract:
A scratch-resistant plastic lens comprising a plastic lens substrate, a hard coat layer made of a coating composition on a surface of the plastic lens substrate and an anti-reflection film formed on the hard coat layer, without a primer, the coating composition comprising:(A) a hydrolyzate of an organosilicon compound of the following formula (I): wherein R1 is an alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, an aryl group having 6 to 10 carbon atoms, an aralkyl group having 7 to 10 carbon atoms, or a monovalent organic group having a mercapto group, an amino group, a methacryloxy group or an epoxy group, R2 is an alkyl group having 1 to 4 carbon atoms, R3 is an alkyl group having 1 to 10 carbon atoms, an alkoxyalkyl group having 2 to 10 carbon atoms or an acyl group having 2 to 10 carbon atoms, n is 0 or 1 and a plurality of (OR3)s are the same or different, (B) particles of at least one oxide of an element selected from the group consisting of silicon, aluminum, tin, antimony, zirconium, tungsten and titanium, or composite particles of at least two oxides thereof, (C) a polyurethane and (D) a curing agent which is a metal chelate compound, the coating composition contains per 100 parts by weight of the component (A), 1 to 200 parts by weight of the component (B), 0.1 to 100 parts by weight of the component (C) and 0.1 to 50 parts by weight of the component (D), a difference in the refractive index between the hard coat layer and the plastic lens substrate being 0.03 or less.