Patent ID: 6858693

Claim:
A coating composition comprising a carbamate-functional polymer having a backbone made by addition polymerization, the polymer comprising from at least 66 to 100% by weight, based on the total weight of the carbamate-functional polymer, of one or more repeat units A selected from the group consisting of: from 0 to less than 35% by weight, based on the total weight of the carbamate-functional polymer, of one or more repeat units A′ having the structure: the carbamate-functional polymer having an equivalent weight of at least 250 grams of polymer per carbamate group, wherein R is an at least divalent nonfunctional linking group having from 1 to 60 carbons atoms and from 0 to 20 heteroatoms selected from the group consisting of oxygen, nitrogen, sulfur, phosphorus, and silane, and mixtures thereof, R′ is an at least monovalent nonfunctional linking group having from 1 to 60 carbons atoms and from 0 to 20 heteroatoms selected from the group consisting of oxygen, nitrogen, sulfur, phosphorus, and silane, and mixtures thereof, R″ is H or a monovalent nonfunctional linking group having from 1 to 60 carbons atoms and from 0 to 20 heteroatoms selected from the group consisting of oxygen, nitrogen, sulfur, phosphorus, and silane, and mixtures thereof, L is a divalent nonfunctional linking group having from 1 to 60 carbons atoms and from 0 to 20 heteroatoms selected from the group consisting of oxygen, nitrogen, sulfur, phosphorus, and silane, and mixtures thereof, F, F 1 and F 2 are functional groups selected from the group consisting of primary carbamate groups, beta-hydroxy primary carbamate groups, hydroxyl groups, and mixtures thereof, with the proviso that at least one of F 1 and F 2 are a primary carbamate group or a beta-hydroxy primary carbamate group, and n is an integer from 0 to 3.