Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1982-02-24
1983-11-01
Ziegler, J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525 63, 525 64, 525 65, 525 75, 525238, 525239, C08L 2706, C08L 5302, C08L 5502
Patent
active
044130929
ABSTRACT:
A polymer blend capable of being molded to an impact resistant, article which comprises a vinyl halide homopolymer or copolymer, a conventional impact resistant enhancing polymer agent for polyvinyl halide wherein the monomer units consist essentially of acrylonitrile, 1,3-butadiene and styrene residues and a thermoplastic block elastomer wherein the essential and predominant monomer units are the residue of a mono-alkenyl aromatic hydrocarbon and the residue of an alkadiene hydrocarbon. The thermoplastic elastomer is normally incompatible with the vinyl halide polymer or copolymer. The vinyl halide polymer or copolymer constitutes the major proportion of said blend and the block and methacrylate polymers together constitute a minor proportion of the composition. The weight ratio of block polymer to acrylonitrile-butadiene-styrene polymer is preferably about 1:5 to about 5:1. Preferably an acrylonitrile-butadiene-styrene polymer having about the same refractive index as that of the vinyl halide resin is employed to obtain a substantially transparent or transluscent molded article.
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"Chem Tech" Oct. 1977, N. Platzer, pp. 634-641.
Chem. Abstract 84: P75098f.
Mudd James F.
Occidental Chemical Corporation
Tao James F.
Ziegler J.
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