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US 4,231,922 AGranted
Impact modified polyarylate blends
AssigneeUnion Carbide Corporation
InventorLloyd M. Robeson
Life of this patent
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Abstract
Described herein are polyarylate molding compositions having improved notched izod impact values after molding, which composition comprises a blend of a polyarylate, a polyester, and an impact modifier which is a graft copolymer of a vinyl aromatic, an acrylate, an unsaturated nitrile, or mixtures thereof, grafted onto an unsaturated elastomeric backbone and having a tensile modulus of less than about 100,000 psi. Also, decabromodiphenyl oxide may be included in said composition.
Claims24
A thermoplastic molding composition having improved notched izod impact values after molding, said composition comprising in admixture:
- (a) a polyarylate derived from a dihydric phenol and an aromatic dicarboxylic acid;
- (b) a polyester derived from an aliphatic or cycloaliphatic diol, or mixtures thereof, and an aromatic dicarboxylic acid;
- and
- (c) an impact modifier which is a graft copolymer of a vinyl aromatic, an acrylate, an unsaturated nitrile, or mixtures thereof, grafted onto an unsaturated elastomeric backbone and having a tensile modulus of less than about 100,000 psi.
1 more element
Dependencies are inferred from the claim text.