Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1986-12-16
1989-03-07
Short, Patricia
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525 29, 525131, 525167, 525445, 528 26, C08G 6376
Patent
active
048107590
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 1300 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) silane compound having the general chemical formula: ##STR1## wherein X is an organic group or (--Si--O--).sub.n, n being 1-50, and X' is independently an organic group, hydroxy-reactive functionality, or an organic group comprising hydroxy-reactive functionality, at least one X' comprising hydroxy-reactive functionality.
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E. I. Du Pont de Nemours and Company
Fricke Hilmar L.
Short Patricia
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