Polyester graft copolymers, flexible coating compositions...

Details Polyester graft copolymers, flexible coating compositions... Polyester graft copolymers, flexible coating compositions...

C - Chemistry, Metallurgy

08

F

400/2015, 400/30

C08F 283/00 (2006.01) C08F 299/06 (2006.01) C08G 18/63 (2006.01) C09D 151/08 (2006.01)

Patent

CA 1324696

Abstract of the Disclosure Hydroxy functional polyester graft copolymers are provided. The copolymer is crosslinkable by hydroxy-reactive crosslinking agent and, in particular, is suitable for use in thermosetting coating compostions adapted to form a flexible cured coating over a variety of substrates, such as metal and plastic. The copolymer has a number average molecular weight between about 1000 and about 15,000, has a hydroxyl number between about 30 and about 300, and is the reaction product of carbon-carbon double bond-reactive monoethylenically unsaturated monomer with hydroxy functional carbon-carbon double bond-bearing branched polyester macromer. The macromer is the reaction product of (i) epoxy acrylate having the formula: Image with (ii) hydroxy functional polyester reactant containing 0-10 urethane linkages per molecule.

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