Patent ID: 6852368
Filing Date: 2005-02-08
Classification: C08K,C09D,Y10T

Abstract:
1. A hard composition comprising: colloidal silica, a compound represented by the following formula (1): wherein R 1 is an alkyl group having 1 to 4 carbon atoms, chloroalkyl group having 1 to 4 carbon atoms, aryl group having 6 to 12 carbon atoms, haloaryl group having 6 to 12 carbon atoms, methacryloxyalkyl group having 5 to 8 carbon atoms, ureidoalkylene group having 2 to 10 carbon atoms, aromatic ureidoalkylene group having 8 to 24 carbon atoms, aromatic alkylene group having 8 to 24 carbon atoms or mercaptoalkylene group having 1 to 12 carbon atoms, R 2 is an alkyl group having 1 to 6 carbon atoms, aryl group having 6 to 12 carbon atoms, alkenyl group having 2 to 10 carbon atoms, chloroalkyl group having 1 to 4 carbon atoms or haloaryl group having 6 to 12 carbon atoms, R 3 is a hydrogen atom, alkyl group having 1 to 4 carbon atoms, acyl group having 1 to 6 carbon atoms or alkylacyl group having 3 to 12 carbon atoms, a is 1, 2 or 3, and b is 0, 1 or 2, with the proviso that (a+b) is 1, 2 or 3; a compound represented by the following formula (2): wherein R 4 is a fluoroalkyl group having 1 to 12 carbon atoms, R 5 is an alkyl group having 1 to 6 carbon atoms, aryl group having 6 to 12 carbon atoms, alkenyl group having 2 to 10 carbon atoms, haloalkyl group having 1 to 6 carbon atoms or haloaryl group having 6 to 12 carbon atoms, R 6 is a hydrogen atom, alkyl group having 1 to 4 carbon atoms, acyl group having 1 to 6 carbon atoms or alkylacyl group having 3 to 12 carbon atoms, c is 1, 2 or 3, and d is 0, 1 or 2, with the proviso that (c+d) is 1, 2 or 3, and a compound represented by the following formula (3): wherein R 7 is an ultraviolet light absorbing organic group having a hydroxy group, R 8 is an alkyl group having 1 to 4 carbon atoms or acyl group having 1 to 6 carbon atoms, R 9 is a hydrogen atom, alkyl group having 1 to 4 carbon atoms or acyl group having 1 to 6 carbon atoms, X is an ether bond, ester bond or urethane bond, g is 0 or 1, and h is 0 or 1.