Polyblends of styrene-maleic anhydride-methyl methylacrylate terpolymers/acrylonitrile-butadiene-styrene polymers and polycarbonates

Claim 2

A polyblend comprising: A. from 5 to 70% by weight of a terpolymer consisting of a vinylaromatic monomer and an unsaturated dicarboxylic acid anhydride monomer and a termonomer selected from the group consisting of C 1 to C 3 alkyl acrylates and methacrylates wherein the relative amounts of weight of the monomers in the terpolymer are 50 to 84% of the vinylaromatic monomer, 15 to 35% of the dicarboxylic acid anhydride and 1 to 25% of the termonomer; and B. from 5 to 70% by weight of a graft polymer of from 20 to 40 parts by weight of a monomer selected from the group consisting of acrylonitrile and methacrylonitrile and 80 to 60 parts by weight of a vinyl aromatic monomer the polymer being grafted onto a substrate rubber having a glass transition temperature below 0° C. wherein the monomers are polymerized in the presence of and grafted onto the substrate rubber, wherein the weight percent of the rubber is in the range from 5 to 60% by weight based on the weight of the composition; and C. from 5 to 70% of bisphenol A homopolycarbonate; wherein the weight percent for Components A, B, and C is based on the total amount of Components (A), (B), and (C) in the polyblend.

Claim 3

A polyblend as in claim 1 wherein the C 1 to C 3 alkyl acrylates and methacrylates are in the range of 5 to 20% by weight of the terpolymer and the weight ratio of the terpolymer of Component A to the graft Polymer of Component B is in the range from 20:80 to 80:20.

Claim 4

A polyblend as in claim 1 wherein the C 1 to C 3 alkyl acrylates and methacrylates are in range of 10 to 20% by weight of the terpolymer and the weight ratio of the terpolymer of Component A to the graft polymer of Component B is in the range from 20:80 to 80:20.

Claim 5

A polyblend as in claim 1 wherein the C 1 to C 3 alkyl acrylates and methacrylates are in the range of 10 to 20% by weight of the terpolymer and the weight ratio of the terpolymer of Component A to the graft polymer of Component B is in the range from 30:70 to 70:30.

Claim 6

A polyblend as in claim 1 wherein the C 1 to C 3 alkyl methacrylate is methyl methacrylate.

Claim 7

A polyblend as in claim 1 wherein Component A is a styrene maleic anhydride methyl methacrylate terpolymer.

Claim 8

A polyblend as in claim 1 wherein the graft-polymer of Component B is butadiene rubber substrate grafted with styrene and acrylonitrile monomers.

Claim 9

A polyblend comprising: A. from 5 to 70% by weight of a styrene maleic anhydride polymer consisting of 50 to 84% by weight of styrene, 15 to 35% by weight of maleic anhydride and 1 to 25% by weight of a methyl methacrylate termonomer; and B. from 5 to 70% by weight of a graft polymer composition comprising a graft polymer of from 20 to 40 parts by weight of acrylonitrile and 80 to 60 parts by weight of styrene, the polymer being grafted onto a butadiene rubber having a glass transition temperature below 0° C. wherein the monomers are polymerized in the presence of and grafted onto the substrate rubber, wherein the weight Percent of the rubber is in the range from 5 to 60% by weight based on the weight of the composition; and C. from 5 to 70% of bisphenol A homopolycarbonate; and wherein the weight ratio of the styrene maleic anhydride polymer to the graft polymer composition is in the range of 80:20 to 20:80; and wherein the weight percent for Components (A), (B), and (C) is based on the total amount of Components (A), (B), and (C) in the polyblend.

Claim 10

A polyblend comprising: A. from 5 to 70% by weight of a styrene maleic anhydride polymer consisting of 50 to 84% by weight of styrene, 15 to 35% by weight of maleic anhydride and 1 to 25% by weight of a methyl methacrylate termonomer; and B. from 5 to 70% by weight of a graft polymer composition comprising a graft polymer of from 20 to 40 parts by weight of acrylonitrile and 80 to 60 parts by weight of styrene, the polymer being grafted onto a butadiene rubber having a glass transition temperature below 0° C. wherein the monomers are polymerized in the presence of and grafted onto the substrate rubber, wherein the weight Percent of the rubber is in the range from 5 to 60% by weight based on the weight of the composition; and C. from 5 to 70% of bisphenol A homopolycarbonate; and wherein the weight ratio of the styrene maleic anhydride polymer to the graft polymer composition is in the range of 80:20 to 20:80; and wherein the weight percent for Components (A), (B), and (C) is based on the total amount of Components (A), (B), and (C) in the polyblend.

Claim 11

A polyblend as in claim 8 wherein the methyl methaacrylate is present from 10 to 20% by weight of the terpolymer and the weight ratio of the polymer of styrene maleic anhydride methyl methacrylate terpolymer to the graft polymer composition is in the range from 30:70 to 70:30.

Claim 12

Molded and extruded articles prepared from a polyblend comprising: A. from 5 to 70% by weight of a terpolymer consisting of a vinylaromatic monomer and an unsaturated dicarboxylic acid anhydride monomer and a termonomer, selected from the group consisting of C 1 to C 3 alkyl acrylates and methacrylates, wherein the relative amounts by weight of the monomers in the terpolymer are 50 to 84% of the vinylaromatic monomers, 15 to 35% of the dicarboylic acid anhydride and 1 to 25% of the termonomer; and B. from 5 to 70% by weight of a graft polymer of from 20 to 40 parts by weight of a monomer selected from the group consisting of acrylonitrile and methacrylonitrile and 80 to 60 parts by weight of a vinyl aromatic monomer, the polymer being grafted onto a substrate rubber having a glass transition temperature below 0° C. wherein the monomers are polymerized in the presence of and grafted onto the substrate rubber, wherein the weight percent of the rubber is in the range from 5 to 60% by weight based on the weight of the composition; and C. from 5 to 70% of bisphenol homopolycarbonate; and wherein the weight percent for Components (A), (B), and (C) is based on the total amount of Components (A), (B), and (C) in the polyblend.

Claim 13

Molded and extruded articles prepared from a polyblend comprising: A. from 5 to 70% by weight of a terpolymer consisting of a vinylaromatic monomer and an unsaturated dicarboxylic acid anhydride monomer and a termonomer, selected from the group consisting of C 1 to C 3 alkyl acrylates and methacrylates, wherein the relative amounts by weight of the monomers in the terpolymer are 50 to 84% of the vinylaromatic monomers, 15 to 35% of the dicarboylic acid anhydride and 1 to 25% of the termonomer; and B. from 5 to 70% by weight of a graft polymer of from 20 to 40 parts by weight of a monomer selected from the group consisting of acrylonitrile and methacrylonitrile and 80 to 60 parts by weight of a vinyl aromatic monomer, the polymer being grafted onto a substrate rubber having a glass transition temperature below 0° C. wherein the monomers are polymerized in the presence of and grafted onto the substrate rubber, wherein the weight percent of the rubber is in the range from 5 to 60% by weight based on the weight of the composition; and C. from 5 to 70% of bisphenol homopolycarbonate; and wherein the weight percent for Components (A), (B), and (C) is based on the total amount of Components (A), (B), and (C) in the polyblend.