Reinforced polyester molding compositions having high gloss and

Details Reinforced polyester molding compositions having high gloss and Reinforced polyester molding compositions having high gloss and

1990-12-19

1992-05-19

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...

525176, 525425, 525444, 524449, 524451, 524538, 524539, C08L 6702

Patent

active

051150166

ABSTRACT:
Improved polyester compositions exhibiting improved gloss and resistance to warping comprise crystallizable polyester resins, e.g., poly(ethylene terephthalate) optionally with poly(1,4-butylene terephthalate) and a reinforcing agent, the improvement comprising adding a modifier selected from an amorphous or semi-crystalline thermoplastic for gloss and warp resistance improvement. The molding compositions exhibit excellent resistance to warp even after adding significant amounts of reinforcing glass filaments.

REFERENCES:
patent: 3562200 (1971-02-01), Jones
patent: 3953394 (1976-04-01), Fox
patent: 4013613 (1977-03-01), Abolins
patent: 4115333 (1978-09-01), Phipps, Jr. et al.
patent: 4125571 (1978-11-01), Scott et al.
patent: 4140670 (1979-02-01), Chartes
patent: 4212791 (1980-07-01), Avery
patent: 4215032 (1980-07-01), Kobayashi et al.
patent: 4393153 (1983-07-01), Hepp
patent: 4425457 (1984-01-01), Christiansen et al.

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