American Cyanamid Company

Shashikumar H Daftary

William E Streetman

Raymond E Kourtz

There is disclosed a melt-spun acrylonitrile polymer fiber of improved dye intensity and reduced shade change due to hot-wet processing.

Melt-spun acrylonitrile polymer fiber of improved properties

By adjusting the viscosity of the spinning solution, low molecular weight polymers of acrylonitrile can be spun to provide useful fiber having an unexpected higher dye color yield than fiber prepared from the corresponding polymer of higher molecular weight.

Acrylic wet spinning process

A self-crimping, melt-spun acrylonitrile polymer fiber comprising as the continuous fiber matrix a first polymer comprising from about 80 to about 99 weight percent acrylonitrile and from about 1 to about 20 weight percent of one or more monomers copolymerizable with acrylonitrile and heterogeneously dispersed within said fiber matrix a second polymer incompatible with said first polymer.

Self-crimping acrylic fiber from a melt of two non-compatible polymers

Process for self-crimping acrylic fiber from a melt of two

A combination of a major amount of acrylonitrile and a minor amount of another monomer copolymerizable with acrylonitrile when grafted onto polyvinyl alcohol provides an improved acrylonitrile polymer for preparing fiber by extruding a fusion melt of such polymer and water.

Acrylic polymer composition for melt-spinning

Spinning of a melt of water and an acrylonitrile polymer containing hydrophobic moieties through a spinnerette into a steam-pressurized solidification zone results in improved fiber when the amount of water in the melt is in the lower half of the range necessary to provide the melt under the conditions of extrusion, the amount of hydrophilic moieties contained in the polymer are sufficient to control the rate of release of water from the extrudate, the steam conditions in the solidification are sufficient to prevent formation of a separate water phase, and drying of the resulting extrudate under conditions of temperature and humidity to remove water therefrom while avoiding formation of a separate water phase.

Growing community of inventors

Pensacola, FL, United States of America

Shashikumar H Daftary