Solvent-borne coating composition containing acetoacyl-functional polymers

1. A coating composition comprising:

a polymer comprising an organic backbone and at least one acetoacyl-functional group;

at least one carbonyl-functional solvent compound having a sufficient concentration in the coating composition to provide a pot life that is greater than a pot life attainable with an equal concentration of xylene, wherein a concentration of solvent-based carbonyl groups from the at least one carbonyl-functional solvent compound constitutes greater than about 15% by weight of the coating composition, based on an entire weight of the coating composition; and

a crosslinking agent.

2. The coating composition of claim 1 , wherein the concentration of solvent-based carbonyl groups from the at least one carbonyl-functional solvent compound constitutes greater than about 20% by weight of the coating composition, based on an entire weight of the coating composition.

3. The coating composition of claim 1 , wherein the at least one carbonyl-functional solvent compound has a molecular mass less than about 200 atomic mass units.

4. The coating composition of claim 1 , wherein the polymer is a first polymer having a glass transition temperature ranging from about 10° C. to about 40° C., and wherein the coating composition further comprises a second polymer comprising an organic backbone and at least one acetoacyl-functional group, and wherein the second polymer has a glass transition temperature ranging from about 60° C. to about 100° C.

5. The coating composition of claim 1 , wherein the at least one carbonyl-functional solvent compound is selected from the group consisting ketones, esters, acyl halides, amides, substituted amides, carbonates, and combinations thereof.

6. The coating composition of claim 1 , wherein the at least one acetoacyl-functional group is attained from at least one monomer selected from the group consisting of acetoacetoxyethyl (meth)acrylates, acetoacetoxypropyl (metha)crylates, allyl acetoacetates, acetoacetoxybutyl (meth)acrylates, 2,3-di(acetoacetoxy)propyl (meth)acrylates, t-butyl acetoacetate, diketene, derivatives thereof, and combinations thereof.

7. The coating composition of claim 1 , wherein the pot life at 23° C. is at least 6 hours.

8. The coating composition of claim 1 , wherein the coating composition is configured to form a coating on a wood substrate to provide a coated wood substrate, the coated wood substrate exhibiting at least three times less discoloration than the wood substrate in an uncoated state, after being exposed to UVb radiation for a 240-hour period, for a coating thickness of 0.76 millimeters.

9. A method of coating a substrate, the method comprising:

providing a coating composition comprising a polymer having an organic backbone and at least one acetoacyl-functional group, at least one crosslinking agent, and at least one carbonyl-functional solvent compound, wherein a concentration of solvent-based carbonyl groups from the at least one carbonyl-functional solvent compound constitutes greater than about 15% by weight of the coating composition, based on an entire weight of the coating composition;

applying the coating composition to a substrate;

removing at least a portion of the at least one carbonyl-functional solvent compound; and

at least partially crosslinking the polymer with the use of the at least one crosslinking agent.

10. The method of claim 9 , wherein the at least one carbonyl-functional solvent compound is selected from the group consisting of ketones, esters, and combinations thereof.

11. The method of claim 9 , wherein the at least one carbonyl-functional solvent compound has a molecular mass less than about 200 atomic mass units.

12. The coating composition of claim 9 , wherein the polymer is a first polymer having a glass transition temperature ranging from about 10° C. to about 40° C., and wherein the formed coating composition further comprises a second polymer comprising an organic backbone and at least one acetoacyl-functional group, and wherein the second polymer has a glass transition temperature ranging from about 60° C. to about 100° C.

13. The method of claim 9 , and further comprising polymerizing the polymer from monomers comprising at least one acetoacyl-functional monomer, at least one (meth)acrylate monomer, and styrene.

14. The method of claim 13 , wherein polymerizing the polymer comprises:

suspending the monomers in a solvent comprising a carbonyl-functional solvent compound; and

polymerizing the suspended monomers by free radical polymerization.

15. A method for forming a coating on a wood substrate, the method comprising:

providing a solvent-borne coating composition comprising at least one crosslinking agent, an organic solvent, and a polymer having an organic backbone and a plurality of acetoacyl-functional groups, wherein the organic solvent comprises at least one carbonyl-functional solvent compound, wherein a concentration of solvent-based carbonyl groups from the at least one carbonyl-functional solvent compound constitutes greater than about 15% by weight of the solvent-borne coating composition, based on an entire weight of the solvent-borne coating composition;

applying the solvent-borne coating composition to the wood substrate;

removing at least a portion of the organic solvent; and

at least partially crosslinking the polymer with the use of the at least one crosslinking agent.

16. The method of claim 15 , wherein the organic solvent mat least one carbonyl-functional solvent compound, wherein a concentration of solvent-based carbonyl groups from the at least one carbonyl-functional solvent compound constitutes greater than about 20% by weight of the solvent-borne coating composition, based on the entire weight of the solvent-borne coating composition.

17. The method of claim 15 , wherein the organic solvent has a concentration in the solvent-borne coating composition that is greater than about 10% by weight.

18. The method of claim 15 , wherein the solvent-borne coating composition comprises 0% by weight to less than about 40% by weight water.

19. The method of claim 15 , wherein the at least one crosslinking agent comprises a polyamine, a polyetheramine, a compound containing a ketimine-functional group, a compound containing an aldimine-functional group, or a combination thereof.

20. The method of claim 15 , and further comprising polymerizing the polymer from monomers comprising at least one acetoacyl-functional monomer, at least one (meth)acrylate monomer, and styrene.