Easily dyeable copolyester fiber and process for preparing the s

Details Easily dyeable copolyester fiber and process for preparing the s Easily dyeable copolyester fiber and process for preparing the s

1985-12-02

1987-05-26

Kight, John

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

Synthetic resins

From carboxylic acid or derivative thereof

528272, C08G 6370

Patent

active

046687645

ABSTRACT:
Easily dyeable polyester fiber consisting of a copolyester having 80 to 98 mole % of ethylene terephthalate units, and having a degree of crystallinity (X.sub.c) and a birefringence (.DELTA.n) satisfying the following relationship (1), and a peak temperature (T.sub.max) at which the dynamic loss tangent (tan .delta.) measured at a frequency of 110 Hz becomes maximum and a maximum tan .delta. value (tan .delta.).sub.max within the following ranges (2) and (3):

REFERENCES:
patent: 4390685 (1983-06-01), Oka et al.
patent: 4426516 (1984-01-01), Kuriki et al.

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