Melt spun acrylonitrile olefinically unsaturated fibers and...

Details Melt spun acrylonitrile olefinically unsaturated fibers and... Melt spun acrylonitrile olefinically unsaturated fibers and...

C - Chemistry, Metallurgy

08

L

C08L 33/20 (2006.01) D01F 6/18 (2006.01) D01F 6/38 (2006.01) D01F 6/40 (2006.01)

Patent

CA 2187414

The present invention relates to fibers produced by melt spinning of high nitrile multipolymers. The fibers are prepared in a solventless, waterless, melt spinning process. The melt spun high nitrile fiber is made from a high nitrile melt processable multipolymer comprising about 50% to about 95% by weight polymerized acrylonitrile monomer and 5% to about 50% by weight of a polymerized olefinically unsaturated monomer. A process for the production of the fibers is disclosed which comprises (a) melt extruding a high nitrile multipolymer in the absence of a solvent and in the absence of water and (b) spinning the high nitrile polymer melt into a high nitrile filament at a temperature higher than the glass transition temperature of the multipolymer and (c) collecting the monofilament or the multiple filament as a fiber bundle.

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