C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
400/3015
C09D 163/00 (2006.01) C08G 18/42 (2006.01) C08G 18/66 (2006.01) C08G 59/06 (2006.01) C08G 59/12 (2006.01) C08G 59/62 (2006.01) C09D 167/04 (2006.01) C09D 175/04 (2006.01)
Patent
CA 1330606
ABSTRACT A hydroxy functional epoxy-polyester graft copolymer and novel, solvent-based thermosetting coating composition comprising said copolymer and polyfunctional, hydroxy-reactive crosslinking agent. The coating composition may be formulated as a hot sprayable, high solids coating composition suitable for use as a chip resistant automotive vehicle primer adapted for use on body panel areas subject to chipping by stones, gravel and other road debris. The composition may also be formulated as a high solids composition sprayable with conventional spraying equipment. Hydroxy-functional epoxy polyester graft copolymer is prepared by polymerization of lactone monomers in the presence of hydroxy functional epoxy ester resin precursor. The precursor is the reaction product of modified diepoxide and hydroxy functional secondary amine in about a 1:1 equivalent ratio. The modified diepoxide is the reaction product of polymerization of lactone monomers in the presence of diepoxide which has been reacted substantially simultaneously with diphenol and dicarboxylic acid.
616132
Dervan Andrew Hubert
Kordomenos Panagiotis I.
E.i. Du Pont de Nemours And Company
Sim & Mcburney
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