Polyphenyl-1,4-phenylene terephthalates and fibers therefrom

Details Polyphenyl-1,4-phenylene terephthalates and fibers therefrom Polyphenyl-1,4-phenylene terephthalates and fibers therefrom

1977-10-05

1979-06-26

Kendell, Lorraine T.

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Rod, strand, filament or fiber

264210F, 428480, 528176, D02G 300

Patent

active

041593650

ABSTRACT:
This invention relates to novel fiber-forming polyesters which in fiber form have high tenacity and high retention of tensile strength at elevated temperatures and to methods for making such polyesters. Fiber preparation and heat treatment are also disclosed.

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patent: 3991013 (1976-11-01), Pletcher
patent: 3991014 (1976-11-01), Kleinschuster
patent: 4064108 (1977-12-01), Inata et al.
patent: 4066620 (1978-01-01), Kleinschuster
patent: 4067852 (1978-01-01), Calundann
patent: 4075262 (1978-02-01), Schaefgen

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