International Telephone and Telegraph Corporation

Minnesota Mining and Manufacturing Company

Arthur C West, Iii

Albin F Turbak

Norman A Portnoy

Richard Benjamin Hammer

Hollow cellulosic fibers are produced by nitrosating and dissolving a cellulosic material in an aprotic solvent selected from the group consisting of a dialkylacylamide and dimethylsulfoxide and regenerating the dissolved cellulose by contacting the cellulose solution with a regenerant. The regenerant is n-octanol where the solvent is a dialkylacylamide and n-hexanol where the solvent is dimethylsulfoxide. The fibers are hollow as regenerated and require no special spinnerette designs nor special spinning conditions.

Process for producing a regenerated hollow cellulosic fiber

Shaped cellulosic fibers are produced by nitrosating and dissolving a cellulosic material in an aprotic solvent selected from the group consisting of a dialkylacylamide and dimethylsulfoxide and regenerating the dissolved cellulose by contacting the cellulose solution with a regenerant. The regenerant is butanol, pentanol or benzyl alcohol where the solvent is a dialkylacylamide and propanol, butanol or benzyl alcohol where the solvent is dimethylsulfoxide. The fibers have a generally crenulated shape as regenerated and require no special spinnerette designs nor special spinning conditions.

Process for producing a regenerated shaped cellulosic fiber

Thermally stable, fluoroelastomeric terpolymers of vinylidene fluoride, hexafluoropropene and chlorotrifluoroethylene in respective mol % composition of 55-70, 25-40 and 1-8 produce vulcanizates with improved fluid resistant properties and low temperature flexibility.

Growing community of inventors

Saint Paul, MN, United States of America

Arthur C West, Iii