Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1987-09-03
1988-12-13
Bleutge, John C.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525440, 525443, 525533, C08G 5916, C08G 6318, C08G 6320
Patent
active
047911794
ABSTRACT:
A solvent-based thermosetting coating composition comprising a hydroxy functional epoxy-polyester graft 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.
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Dervan Andrew H.
Kordomenos Panagiotis I.
Bleutge John C.
E. I. Du Pont de Nemours and Company
Fricke H. L.
Sellers II Robert E. L.
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