Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From silicon reactant having at least one...
Patent
1987-02-24
1988-06-28
Marquis, Melvyn I.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From silicon reactant having at least one...
528 26, 528 27, 528 32, 528 33, 528 41, 525474, 525476, 525477, 525479, C08G 7704
Patent
active
047540141
ABSTRACT:
Hydroxy functional polysiloxane 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 1000 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 polysiloxane macromer. The macromer is the reaction product of (i) epoxy monomer having the formula: ##STR1## with (ii) hydroxy functional polysiloxane reactant containing 0-10 urethane linkages per molecule.
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Kurple Kenneth R.
Ryntz Rose A.
E. I. Du Pont de Nemours and Company
Fricke Hilmar L.
Marquis Melvyn I.
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