Patent ID: 7981507
Filing Date: 2011-07-19
Classification: C08J,C09D,Y10T

Abstract:
1. A primer composition for a polysiloxane hard coating, comprising: (A) a vinyl polymer having a hydrolyzable silyl group and/or SiOH group and an organic UV absorbing group bonded to its side chain; and (B) silica particles having a primary particle size of 0.5 to 100 nm dispersed in an organic solvent; wherein: the silica particles are present in an amount such that the solid content of the silica particles is 0.1 to 100 parts by weight in relation to 100 parts by weight of the vinyl polymer (A); the primer composition does not contain a thermoplastic vinyl resin; and a primer layer formed by coating and curing the primer composition has a coefficient of linear expansion of up to 150×10