Porous flame retardant acrylic synthetic fibers and a method for

Details Porous flame retardant acrylic synthetic fibers and a method for Porous flame retardant acrylic synthetic fibers and a method for

1980-06-06

1982-08-24

Kendell, Lorraine T.

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Rod, strand, filament or fiber

260DIG23, 264177F, D02G 300

Patent

active

043461468

ABSTRACT:
Porous flame retarded acrylic synthetic fibers consisting of cellulose acetate and a modacrylic copolymer containing vinyl chloride and/or vinylidene chloride are produced by spinning an organic solvent solution of a polymer consisting of cellulose acetate and the above described modacrylic copolymer into a coagulation bath, primarily drawing the spun fibers at a draw ratio of 2.5.about.8.0, drying the water swelled fibers at 100.degree..about.180.degree. C. to a water content of no greater than 1.0% by weight and secondarily drawing the dried fibers under wet heat at a draw ratio of no greater than 3 times.

REFERENCES:
patent: 2528200 (1950-10-01), Weinberg
patent: 2948048 (1960-08-01), Jankens
patent: 3322611 (1967-05-01), Stevenson
patent: 3542715 (1970-11-01), White et al.
patent: 3575898 (1971-04-01), McClure
patent: 3729531 (1973-04-01), Saling
patent: 3846226 (1974-11-01), Smithey
patent: 3963790 (1976-06-01), Couchoud

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