Patent ID: 6930136

Claim:
A benzotriazole adduct having the structure: in which n is 0, 1, 2, or 3; E and E′ independently are an organic moiety containing vinyl, ether, vinyl silane, carbon to carbon double bond attached to an aromatic ring and conjugated with the unsaturation in the aromatic ring, epoxy, acetyl acetonate, fumarate, maleate, or maleimide functionality; Z is hydrogen, hydrocarbyl, or an organic moiety containing electron donor, epoxy, acetyl acetonate, or electron acceptor excluding acrylate, functionality; Z′ is hydrogen, hydrocarbyl, an electron donating group, or an electron withdrawing group, L and L′ independently are a hydrocarbyl group, or a functionality selected from the group consisting of: in which R is a hydrocarbyl group attached to the benzotriazole segment; and R′ is hydrogen, an aromatic, or an alkyl group of 1 to 6 carbon atoms, and provided that if n is 0 for each of (E-L), (L-E), or (L′-E′), then Z is not hydrogen or alkyl; and provided that if L or L′ is alkyl and E is a maleimide or a styrene group, then for (L-E) or (L′-E′), n must be more than 1, or for (E-L), n must be at least one.