(A) a polymer resin comprising active hydrogen-containing functional group other than carbamate, (B) a curing agent having groups that are reactive with said functional groups on (A), and (C) a reactive additive comprising at least one compound having a molecular weight of from 233 to 583 and having the formula: wherein X is a branched alkyl group of from 5 to 30 carbons, and one or both of (A) an