Patent ID: 11952505
Assignee: SWIMC LLC
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. A waterborne one-component coating composition capable of self-crosslinking and exhibiting a gloss and hardness when cured that is similar to a solventborne two-component composition, the composition comprising:
a first, urethane phase including a polyurethane polymer with at least one of polyester diol monomer units, polycarbonate diol monomer units, and ketone-functionalized diol monomer units;
a second phase including polymer having monomer units selected from one of alkyl (meth)acrylate monomer units, vinyl acetate monomer units, styrene monomer units, ketone-functional vinyl monomer units, or combinations thereof, the second phase having a glass transition temperature of about 0° C. to about 100° C.;
a hydrazine-functionalized crosslinking agent configured to crosslink the ketone-functionalized diol monomer units or the ketone-functionalized diol monomer units and the ketone-functional vinyl monomer units; and
one or more reaction moderators,
wherein the urethane phase comprises about 1 to 10 weight percent of the ketone-functionalized diol monomer units based on the weight of the urethane phase;
wherein the one or more reaction moderators are present in the coating composition at 1 to 4 weight percent based on the combined weight of the first and second phases; and
wherein the one or more reaction moderators are selected from the group consisting of dimethyl amino hydroxyl propane, dimethylamino-2-methyl-1-proponol, N—N-dimethyl-3-methoxypropylamine, dimethylaminoethanol and combinations thereof.