Transparent high impact graft polymers
AssigneeBorg-Warner Corporation
InventorDavid O. Conley
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Abstract
Graft polymers comprised of rubbery polymeric substrates with methacrylonitrile grafted thereon. The graft polymers are characterized by being transparent and containing methacrylonitrile as a grafting monomer in an amount from about 85 per cent to about 95 per cent by weight of the total graft polymer.
Claims3
A transparent graft polymer prepared in a manner whereby the refractive index of the polymerized grafting monomers, after polymerization in the presence of the substrate, is substantially equal to the graft polymer substrate, said graft polymer prepared by polymerizing about 90 percent by weight of methacrylonitrile in the presence of about 10 percent by weight of a rubbery polymeric substrate selected from the group consisting of conjugated diene homopolymers and copolymers consisting of a conjugated diene and up to about 40 percent by weight of a monomer selected from the group consisting of styrene, substituted styrene, alkyl acrylate and alkyl alkacrylate.
Dependencies are inferred from the claim text.