Acrylic fiber having improved basic dyeability and method for ma

Details Acrylic fiber having improved basic dyeability and method for ma Acrylic fiber having improved basic dyeability and method for ma

1980-06-06

1981-10-13

Kendell, Lorraine T.

Stock material or miscellaneous articles

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

Rod, strand, filament or fiber

260DIG23, 260DIG32, 428372, D02G 300

Patent

active

042948843

ABSTRACT:
An acrylic fiber having improved basic dyeability and the method for making the same wherein an acrylic polymer containing a sulfonated vinyl monomer as a part thereof is dissolved in a suitable solvent to form a spinning dope and a solution of a second or additive polymer dissolved in the same solvent is added to the dope which is then spun to form fibers. The second polymer is selected from the group consisting of cellulose triacetate, polymethyl methacrylate, polyvinyl chloride, a polyamide of hexamethylenediamine with 1,1,3-trimethyl-5-carboxy-3-(p-carboxyphenyl) indane and a polyamide of hexamethylene diamine with isophthalic acid. The spin dope will contain 10 to 35 weight percent of polymer solids, with the amount of the second or additive polymer being 0.5 to 25 weight percent of the total polymer solids. Fibers spun from the dope have enhanced basic dyeability. The method is effective only when the acrylic polymer contains a sulfonated vinyl monomer as part of the acrylic polymer backbone.

REFERENCES:
patent: 3432472 (1969-03-01), Caldwell
patent: 3462238 (1969-08-01), Hirshfeld et al.
patent: 3607611 (1971-09-01), Matsui et al.
patent: 3622658 (1971-11-01), Shimoda et al.
patent: 3846226 (1974-11-01), Smithey
patent: 3963790 (1976-06-01), Couchoud

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