Copolyetherester elastomer with poly(1,3-propylene terephthalate

Details Copolyetherester elastomer with poly(1,3-propylene terephthalate Copolyetherester elastomer with poly(1,3-propylene terephthalate

1989-02-28

1990-06-26

Kight, John

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

Synthetic resins

From carboxylic acid or derivative thereof

528308, 5283086, 5283087, 525437, C08G 6302

Patent

active

049373145

ABSTRACT:
A thermoplastic, segmented, linear copolyetherester elastomer of at least 70 weight percent soft segments, derived from poly(alkylene oxide) glycols and terephthalic acid, and hard segments constituting 10-30% of the elastomer and being 95 to 100% poly(1,3-propylene terephthalate). Melt-spun and drawn fibers of the elastomer have superior elastic and set properties versus comparable fibers made from such elastomers having hard segments of poly(ethylene terephthalate) or of poly(1,4-butylene terephthalate).

REFERENCES:
patent: 3023192 (1981-03-01), Shiver
patent: 3243413 (1963-07-01), Bell et al.
patent: 3651014 (1979-12-01), Witsiepe
patent: 3775374 (1982-03-01), Wolfe
patent: 4396746 (1983-08-01), Toga
Nishimura et al., "Elastomers Based on Polyester", J. Macromol. Sci. (Chem.), A1(4), 617-625 (1967).
Wolfe, "Elastomeric Polyetherester Block Copolymers", American Chemical Society Advances in Chemistry, 176, 129-151 (1979).

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