Process for manufacturing elastic hard fibers

Details Process for manufacturing elastic hard fibers Process for manufacturing elastic hard fibers

1975-10-16

1977-02-01

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

264178F, 264210F, D01D 508

Patent

active

040062082

ABSTRACT:
An elastic hard fiber composed mainly of polyisobutylene oxide and having an elastic recovery ratio of at least 70% from 50% extension and a work recovery ratio of at least 70% from 5% extension, is prepared by extruding molten polyisobutylene oxide at a temperature of from 175.degree. C up to the decomposition temperature thereof, cooling the extrudate rapidly to a temperature of -20.degree. to 70.degree. C, and spinning it at a draw ratio of 50 to 1000.

REFERENCES:
patent: 3408435 (1968-10-01), Logan et al.
patent: 3432590 (1969-03-01), Papps
patent: 3453357 (1969-07-01), Logan
patent: 3509074 (1970-04-01), Kamio et al.

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