High shrinkage polyester fibers and method of preparation

Details High shrinkage polyester fibers and method of preparation High shrinkage polyester fibers and method of preparation

1990-03-30

1991-12-03

Kight, III., John

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

Synthetic resins

Treating polymer containing material or treating a solid...

528272, 5283082, 5283086, 528483, 528503, 2641761, 2642108, 264291, 264292, 26417713, 26417717, C08F 600

Patent

active

050701851

ABSTRACT:
High shrinkage polyester fibers having good strength and uniform dyeability are disclosed, along with a method of producing the high shrinkage polyester fibers, by drawing a feeder yarn having a birefringence (n) of at least 0.0175 at a temperature below the glass transition temperature for the polyester and with carefully controlled draw ratios.

REFERENCES:
patent: 2556295 (1951-06-01), Pace, Jr.
patent: 2734794 (1956-02-01), Calton
patent: 4265849 (1981-05-01), Borenstein
patent: 4442057 (1984-04-01), Brody
patent: 4826949 (1989-05-01), Stanko

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