Polyester fibers having excellent dyeability

Details Polyester fibers having excellent dyeability Polyester fibers having excellent dyeability

1974-10-11

1976-10-26

Tillman, Murray

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

8165, 8179, 8DIG4, 260 457P, 260 457S, 260 458R, 260 459NC, 260 4595C, C08L 6702

Patent

active

039883876

ABSTRACT:
Polyester fibers which are characterized by excellent dyeability are produced by spinning a polymer obtained by an ester interchange reaction of 60 to 95% by weight of a polyester, containing at least 95 mol % of ethylene terephthalate units, and 40 to 5% by weight of a polyester containing at least 85 mol % of tetramethylene terephthalate units, wherein the filamentary polymer has a melting point Tm (.degree. C) of Tm.sub.o -5(.degree. C) .gtoreq. Tm .gtoreq. Tm.sub.o -20(.degree. C)(wherein Tm.sub.o is the melting point of the polyester containing at least 95 mol % of ethylene terephthalate unit) and a crystallizing temperature of 170.degree. C or higher.

REFERENCES:
patent: 2623031 (1952-12-01), Snyder
patent: 3265762 (1966-08-01), Quisenberry
patent: 3560591 (1971-02-01), Tvanaka
patent: 3629366 (1971-12-01), Brinkmann
patent: 3651172 (1972-03-01), Barkey

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