Copolyesters derived from 2,6-naphthalenedicarboxylic acid, tran

Details Copolyesters derived from 2,6-naphthalenedicarboxylic acid, tran Copolyesters derived from 2,6-naphthalenedicarboxylic acid, tran

1982-09-30

1983-11-08

Lee, Lester L.

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

Synthetic resins

From carboxylic acid or derivative thereof

528299, 528302, 528303, 528304, 528305, 528306, C08G 6318, C08G 6354

Patent

active

044143826

ABSTRACT:
Copolyesters of poly(ethylene 2,6-naphthalenedicarboxylate) modified with about 15 to 45 mol % trans-4,4'-stilbenedicarboxylic acid can be injection molded to give polymers with tensile strengths up to 32,000 psi and moduli up to 1,250,000 psi. As-spun or drawn fibers and films of poly(ethylene 2,6-naphthalenedicarboxylate) modified with as little as 10 mol % trans-4,4'-stilbenedicarboxylic acid have improved modulus compared with unmodified poly(ethylene 2,6-naphthalenedicarboxylate). The copolyesters have properties superior to those of poly(ethylene terephthalate).

REFERENCES:
patent: 3293223 (1966-12-01), Duling
patent: 3627758 (1971-12-01), Basel et al.
patent: 3842040 (1974-10-01), Browne et al.
patent: 4101528 (1978-07-01), Knopka

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