C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
400/2015, 400/30
C08G 59/16 (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) C08G 63/18 (2006.01) C08G 63/20 (2006.01) C09D 167/04 (2006.01)
Patent
CA 1305262
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 in the reaction product of modified dispoxide 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.
549041
Dervan Andrew H.
Kordomenos Panagiotis I.
E.i. Du Pont de Nemours And Company
Mccallum Brooks & Co.
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