VOORTBRENGSELEN VAN POLYCARBONAAT DIE BEKLEED ZIJN MET EEN HECHTENDE, DUURZAME ORGANOPOLYSILOXANLAAG, ALSMEDE WERKWIJZE TER VERVAARDIGING HIERVAN.

摘要

A coated polycarbonate article comprising a polycarbonate substrate having (i) a primer layer comprising a UV cured reaction product of a polyfunctional acrylic ester monomer and an organic silicon compound of the formula R3cSiX(4-c) wherein R3 is an organic moiety containing olefinic unsaturation, X is an alkoxy, acyloxy and aryloxy group, and c is an integer of from 1 to 3; and (ii) a thermoset organopolysiloxane coating on said UV cured primer layer. A process for producing a coated polycarbonate article comprising (i) priming a polycarbonate substrate with a UV curable primer composition containing (a) a polyfunctional acrylic ester monomer, (b) an organic silicon compound of the formula R3cSiX(4-c), wherein R, X and c are as defined above; and (c) a UV photo initiator; (ii) UV curing said primer composition; (iii) applying an organopolysiloxane coating composition to the primed substrate; and (iv) curing the organopolysiloxane.