Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1987-10-13
1989-07-18
Seccuro, Carman J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525304, 525305, 525902, C08F25702, C08F26504, C08F26506
Patent
active
048494801
ABSTRACT:
Crosslinked polymer microparticles that have a particle size of about 0.1-5 microns of polymerized monomers of styrene, alkyl methacrylate having 1-12 carbons in the alkyl group, alkyl acrylate having 1-12 carbon atoms in the alkyl group and mixtures thereof, about 0.1-5% by weight of a crosslinking monomer of an alkylene glycol dimethacrylate or diacrylate each having 1-8 carbon atoms in the alkyl group and about 0.1-5% by weight of allyl methacrylate or allyl acrylate; said polymer having a weight average molecular weight of about 500,000 to 5,000,000; polymeric chains are grafted onto the polymer microparticles; the microparticles are useful as additives for coating compositions to control rheology and in particular for metallic pigment flake and sag control.
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Antonelli Joseph A.
McLaughlin Joseph E.
Strolle Clifford H.
E. I. Du Pont de Nemours and Company
Fricke Hilmar L.
Seccuro Carman J.
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