Processing of ethylene terephthalate/hexahydroterephthalate copo

Details Processing of ethylene terephthalate/hexahydroterephthalate copo Processing of ethylene terephthalate/hexahydroterephthalate copo

1990-08-29

1991-12-17

Lorin, Hubert C.

Plastic and nonmetallic article shaping or treating: processes

With twining, plying, braiding, or textile fabric formation

264168, 2642107, 2642108, 26421115, 2642356, 264346, D01F 684

Patent

active

050733222

ABSTRACT:
Improved fibers of a copolymer of ethylene terephthalate/hexahydroterephthalate containing a high proportion of hexahydroterephthalate are obtained by a 2-stage drawing process, involving annealing, and crimping, with the annealing being performed within a temperature range of about 140.degree. to about 175.degree. C.

REFERENCES:
patent: 2071251 (1937-02-01), Carothers
patent: 2465319 (1949-03-01), Whinfield et al.

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