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US 4,537,933 AGranted
Blends of polyolefin graft polymers and ASA polymers
AssigneeOccidental Chemical Corporation
InventorsLeigh E. Walker, Gautam R. Ranade
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Abstract
A novel thermoplastic polymer composition comprises a blend of a polyolefin graft polymer and a copolymer of acrylonitrile and styrene modified with a base polymer such as an acrylic polymer, a chlorinated polyethylene, or a terpolymer of styrene, acrylonitrile and a polyene modifier.
Claims24
A polymer composition comprising:
- a polymer of a vinyl aromatic compound, an unsaturated nitrile and a base polymer selected from the group consisting of chlorinated polyethylene, an acrylic polymer, and an ethylene, propylene polyene modified polymer, and
- a vinyl halide polyolefin graft polymer wherein the vinyl halide alone or in combination with up to 50 percent by weight based on the total weight of monomer of an ethylenically unsaturated compound copolymerizable therewith, and in the liquid state, is polymerized with a polyolefin which comprises a polymer of an aliphatic hydrocarbon monoolefin of 2 to about 8 carbon atoms, and which is in the solid state and is substantially insoluble in the monomer but absorbs a substantial amount of the monomer.
A polymer composition comprising a polymer of styrene, acrylonitrile and chlorinated polyethylene, and
- a vinyl chloride polyolefin graft polymer, wherein the vinyl chloride in the liquid state, is polymerized with a polyolefin which is in the solid state and comprises an ethylene, propylene diene modified polymer that is substantially insoluble in vinyl chloride but absorbs a substantial amount of chloride,
- wherein the proportion of polyolefin in said graft polymer is greater than about 20 up to about 80 weight percent based on the weight of vinyl chloride.
A polymer composition comprising:
- a polymer of styrene, acrylonitrile and an acrylic polymer, and
- a vinyl chloride polyolefin graft polymer, wherein the vinyl chloride in the liquid state, is polymerized with a polyolefin which is in the solid state and comprises an ethylene propylene diene modified polymer that is substantially insoluble in vinyl chloride but absorbs a substantial amount of vinyl chloride,
- wherein the proportion of polyolefin in said graft polymer is greater than about 20 up to about 80 weight percent based on the weight of vinyl chloride.
A polymer composition comprising:
- a polymer of styrene, acrylonitrile and an ethylene, propylene polyene modified polymer, and
- a vinyl chloride polyolefin graft polymer, wherein the vinyl chloride in the liquid state, is polymerized with a polyolefin which is in the solid state and comprises an ethylene propylene diene modified polymer that is substantially insoluble in vinyl chloride but absorbs a substantial amount of vinyl chloride,
- wherein the proportion of polyolefin in said graft polymer is greater than about 20 up to about 80 weight percent based on the weight of vinyl chloride.
Dependencies are inferred from the claim text.