Spandex fiber with copolymer soft segment

Details Spandex fiber with copolymer soft segment Spandex fiber with copolymer soft segment

1988-05-26

1991-03-19

Jacobs, Lewis T.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

2642108, 26421114, 525410, 528 61, 528 64, 528 68, 428364, 428394, D01F 678, C08G 1812, C08G 1848, C08G 1876

Patent

active

050008994

ABSTRACT:
A elastic fibers are formed from spandex polymer that is prepared by reacting a glycol prepared from a tetrahydrofuran/3-methyltetrahydrofuran copolymer with a diisocyanate and then chain extending the thusly capped glycol with a particular mixture of diamines. The fibers have a highly desirable combination of power, hot-wet creep and heat-set efficiency and can be prepared at high spinning and windup speeds.

REFERENCES:
patent: Re29623 (1978-05-01), Oertel
patent: 2929804 (1960-03-01), Steuber
patent: 3180854 (1965-04-01), Schneider
patent: 3428711 (1969-02-01), Hunt
patent: 3642703 (1972-02-01), Suzuki
patent: 4296174 (1981-08-01), Hanzel
patent: 4590285 (1986-05-01), Ernst
patent: 4590312 (1986-05-01), Ernst
patent: 4772677 (1988-09-01), Kausch
patent: 4798880 (1989-01-01), Lodoen
"Polyurethanes from Copolymers of Tetrahydrofuran", Product Licensing Index, Research Disclosures, 8810 (Aug. 1971).
Chiang & Rhodes, "Polymerizability of 3-Methyltetrahydrofuran", Polymer Letters, V. 7, pp. 643-649 (1969).

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