Polymer compositions having improved molding characteristics

Details Polymer compositions having improved molding characteristics Polymer compositions having improved molding characteristics

1990-12-19

1992-02-25

Short, Patricia

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

525444, C08L 6703

Patent

active

050914642

ABSTRACT:
Disclosed are novel blends of fully aromatic copolyesters which comprise (a) 1-19 parts by weight of a polyester comprising recurring moieties of dihydroxybenzene, nonvicinal benzene dicarboxylate, para oxybenzoate to (b) 1 part by weight of a polyester comprising recurring moieties of diphenol, nonvicinal benzene dicarboxylate, para oxybenzoate; wherein the polyester (a) has a melting point in the range of about 340 C. to 400 C., a crystallization temperature of from about 300-340 C., and a crystallization rate of at least 1,000 counter per minute. The blends display improved surface properties, particularly improved blistering resistance.

REFERENCES:
patent: 4563508 (1986-01-01), Cottis

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