US 12,421,348 B2
Coating compositions and methods with polyfunctional carbamate salt
Nathan McCormick, Ham Lake, MN (US); and Jason Lindquist, Lino Lakes, MN (US)
Assigned to SWIMC LLC, Cleveland, OH (US)
Appl. No. 17/753,607
Filed by SWIMC LLC, Cleveland, OH (US)
PCT Filed Sep. 9, 2020, PCT No. PCT/US2020/049854
§ 371(c)(1), (2) Date Mar. 9, 2022,
PCT Pub. No. WO2021/055195, PCT Pub. Date Mar. 25, 2021.
Claims priority of provisional application 62/902,049, filed on Sep. 18, 2019.
Prior Publication US 2022/0332884 A1, Oct. 20, 2022
Int. Cl. C08G 18/79 (2006.01); C07C 211/63 (2006.01); C08G 18/28 (2006.01); C09D 5/08 (2006.01); C09D 7/65 (2018.01)
CPC C08G 18/792 (2013.01) [C07C 211/63 (2013.01); C08G 18/285 (2013.01); C09D 5/08 (2013.01); C09D 7/65 (2018.01); C08G 2150/90 (2013.01)] 5 Claims
 
1. A method of preparing a latent catalyst, comprising:
providing a hydroxide-functional component;
providing a multifunctional isocyanate component wherein the multifunctional isocyanate is hexamethylene diisocyanate trimer, hexamethyelene diisocyanate homopolymer, or combinations thereof:
reacting the hydroxide-functional component with the multifunctional isocyanate component to produce a latent catalyst having the structure of general formula (I):

OG Complex Work Unit Chemistry
where:
each X+is independently a non-acidic cation;
each R1 is independently H, C1 to C10 alkyl, aryl, aralkyl, or C1 to C10 substituted alkyl, aryl, aralkyl, or mixture or combinations thereof;
each R2 and R3 is each independently C1 to C10 alkyl, aryl, aralkyl, or C1 to C10 substituted alkyl, aryl, aralkyl, or mixture or combinations thereof; and
n is greater than 1.