Polyarylate containing blends
AssigneeUnion Carbide Corporation
InventorsLloyd M. Robeson, George A. Skoler
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Abstract
Described herein are molding compositions comprising a blend of (a) a polyarylate derived from a dihydric phenol and a mixture of isophthalic acid and terephthalic acid, of which more than about 65 mole percent is terephthalic acid, (b) a polyarylate derived from a dihydric phenol and a mixture of terephthalic acid and isophthalic acid, of which more than about 70 mole percent is isophthalic acid, and (c) at least one thermoplastic polymer compatible therewith. An article molded from these compositions has a good balance of mechanical properties and improved environmental stress crack resistance.
Claims39
A molding composition comprising a blend of:
- (a) a polyarylate derived from a dihydric phenol and a mixture of isophthalic acid and terephthalic acid, of which more than about 65 mole percent is terephthalic acid,
- (b) a polyarylate derived from a dihydric phenol and a mixture of terephthalic acid and isophthalic acid, of which more than about 70 mole percent is isophthalic acid, and
- (c) at least one thermoplastic polymer compatible therewith.
A molding composition comprising a blend of:
- (a) a polyarylate derived from a dihydric phenol and a mixture of isophthalic acid and terephthali acid, of which more than about 65 mole percent is terephthalic acid,
- (b) a polyarylate derived from a dihydric phenol and a mixture of terephthalic acid and isophthalic acid, of which more than about 70 mole percent is isophthalic acid, and
- (c) a polyester derived from an aliphatic or a cycloaliphatic diol, or mixtures thereof, and at least one aromatic dicarboxylic acid.
A molding composition comprising a blend of:
- (a) a polyarylate derived from a dihydric phenol and a mixture of isophthalic acid and terephthalic acid, of which more than about 65 mole percent is terephthalic acid,
- (b) a polyarylate derived from a dihydric phenol and a mixture of terephthalic acid and isophthalic acid, of which more than about 70 mole percent is isophthalic acid, and
- (c) an aromatic polycarbonate.
Dependencies are inferred from the claim text.