Patents

PPG patents polymer additves for powder coatings

September 13, 2011

Patent No. U.S. 7,816,451 B2
PPG Industries has received a patent for a compound that is comprised of the reaction product of a highly branched polymer having terminal amine functional groups and a lactam, wherein the highly branched polymer is the step-growth polymerization reaction product of a polyfunctional first monomer having a first functional group and a polyfunctional second monomer having a second functional group wherein the first and second functional groups will react with each other but not themselves, wherein formation of the highly branched polymer is free of self-condensation of the polyfunctional first monomer, and free of self-condensation of the polyfunctional second monomer. 

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