Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Ethylenically unsaturated reactant admixed with either...
Patent
1988-08-11
1989-10-10
Short, Patricia
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Ethylenically unsaturated reactant admixed with either...
525 30, 525124, 525131, 525159, 525440, C08L 6702, C08L 7506
Patent
active
048732850
ABSTRACT:
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 compositions 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 1,300 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) hydroxy functional polyester reactant containing 0-10 urethane linkages per molecule with (ii) halide compound consisting of vinyl alkyl halide compound and vinyl aryl halide compound wherein the reaction of (i) and (ii) takes place under conditions that promote substantially only the reaction between the halide moiety of compound (ii) and the hydroxyl groups of reactant (i).
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E. I. Du Pont de Nemours and Company
Lynn John M.
Short Patricia
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