Patent ID: 8895137

Claim:
A multilayer system comprising a base layer comprising a thermoplastic, a primer layer, and a scratch resistant layer comprising a scratch resistant top coat, wherein said primer layer comprises a silylated UV absorber based on triazine and said scratch resistant layer is produced from a scratch resistant top coat comprising an acid, wherein said multilayer system further comprises an interpenetration layer (IPL), wherein the base layer (B), primer layer(s) (Pr), scratch resistant layer(s) (SR), and interpenetration layers assume one of the following layer sequences: (B)-(Pr)-(IPL)-(SR) (SR)-(B)-(Pr)-(IPL)-(SR) (SR)-(IPL)-(Pr)-(B)-(Pr)-(IPL)-(SR), and wherein the film thickness ratio of said interpenetration layer to said scratch resistant layer is greater than 10%, wherein said silylated UV absorber based on triazine is selected from the compounds and said acid is acetic acid.