Patent ID: 6808812
Filing Date: 2004-10-26
Classification: C08G,C09D,G02B,Y10T

Abstract:
A plastic material having at least one face coated with a cured layer of an abrasion or scratch resistant coating composition comprising:(A) a component which is the reaction product with oxalic acid of at least one organometallic compound of formula: R1yâ€”M(OR)x-yâ€ƒâ€ƒ(I) wherein M is a metal, R is H or an alkyl radical, R1 is a chelating ligand, x is the valency of the metal, y is an integer at least equal to 1 and x-y is at least equal to 1; and (B) at least one organoalkoxysilane of formula: R3nSi(OR2)4âˆ’nâ€ƒâ€ƒ(II) wherein R2 is an alkyl radical, R3 is an epoxidized alkyl group and n is an integer from 1 to 3, or a mixture of the organoalkoxysilane of formula (II) with an alkoxysilane of formula (IIâ€²)Râ€²nâ€²Si(ORâ€³)4âˆ’nâ€²â€ƒâ€ƒ(II) wherein nâ€² is an integer from 0 to 3, Râ€³ is H, an alkyl radical or an alkoxyalkyl radical, and Râ€² is a vinyl, (meth)acryl, aromatic, cyclic or aliphatic alkyl radical, wherein said cured layer of an abrasion or scratch resistant coating composition is deposited on top of a first abrasion-resistant coating comprising a polysiloxane cured material.