Thermosetting coating composition useful as chip resistant prime

Details Thermosetting coating composition useful as chip resistant prime Thermosetting coating composition useful as chip resistant prime

1983-07-05

1986-04-08

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...

525532, C08G 5914

Patent

active

045814244

ABSTRACT:
Novel epoxy-polyester graft copolymer and novel, solvent-based thermosetting coating composition comprising said copolymer and blocked polyisocyanate crosslinking agent. Coating composition may be formulated as hot sprayable, high solids coating composition suitable for use as chip resistant automotive vehicle primer adapted for use on body panel areas subject to chipping by stones, gravel and other road debris. Alternatively, composition may be formulated as a high solids composition sprayable with conventional spraying equipment. Epoxy-polyester graft copolymer is prepared by polymerization of lactone monomers in presence of hydroxy functional epoxy resin precursor. Precursor resin is formed by reaction of diepoxide, previously chain extended with diphenol, with hydroxy functional secondary amine in chain terminating reaction.

REFERENCES:
patent: 4260716 (1981-04-01), Christenson
patent: 4260720 (1981-04-01), Bosso
patent: 4343925 (1982-08-01), Chang
patent: 4423168 (1983-12-01), Valko

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