Fiber from acrylonitrile copolymers having reduced inflammabilit

Details Fiber from acrylonitrile copolymers having reduced inflammabilit Fiber from acrylonitrile copolymers having reduced inflammabilit

1978-10-19

1980-09-23

Seccuro, Carman J.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 296RW, 260 308DS, 525291, 525274, 264182, C08K 520, C08L 3320

Patent

active

042242100

ABSTRACT:
Textile fibers having reduced inflammability and high luster, constituted copolymers of acrylonitrile, vinylidene chloride and a significantly homopolymerizable sulphonic comonomer are described. Significantly homopolymerizable comonomers are defined as monomers which homopolymerize with a conversion above 30.degree.-40.degree. under standard conditions set forth in the specification. A preferred class of such comonomers are the derivatives of acrylamidoalkanesulphonic acids, e.g. 2-acrylamido-2-methylpropane-sodium sulphonate. The fibers are spun from spinning dopes containing said copolymers in solution in organic solvent miscible with water and less than 4% of water. Said spinning dopes can be obtained by preparing a binary copolymer of acrylonitrile and the sulphonic monomer, in solution in the solvent, mixing the solution with a solution of acrylonitrile and vinylidene monomers in the same solvent, and subjecting the mixture to copolymerization. The copolymers finally obtained contain 50-85% of acrylonitrile, 13.5-46.5% of vinylidene chloride, and 1.5-3.5% of the sulphonic comonomer, the percentages being by weight.

REFERENCES:
patent: 3256252 (1966-06-01), Kruckenberg et al.
patent: 4101621 (1978-07-01), Yamamoto et al.

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