Patent ID: 6855789

Claim:
A method of improving the adhesion of a first coating composition to a subsequently applied material, comprising providing a first coating composition comprising a carbamate-functional polymer having a backbone resulting from addition polymerization and having from 0 to less then 35 weight percent of repeat units from nonfunctional ethylenically unsaturated monomers A′, based on the total weight of the polymer, wherein the polymer comprises from at least 66 to 100% by weight, based on 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.