Alliedsignal Inc.

Other

Thomas P Izod

Morris B Berenbaum

James T Yardley

Harry E Ulmer

Charles J Cole

Frederick R Hopf

John H Bonfield

Paul W Harris

Karen M Bland

Scott Martin Hacker

Morton H Litt

Donald R Taylor

Anjana Bose

John D Hewes

This invention relates to a process of extracting a first spinning solvent such as mineral oil from a solution spun polymer fiber such as polyethylene through use of an extraction solvent such as dimethyl diethylene glycol and diethyl diethylene glycol in which the spinning solvent is soluble, which extracting solvent is soluble in a third extraction solvent such as water to a greater extent than the extraction solvent is soluble in the spinning solvent, such that the second extracting solvent can be extracted from a solution of said spinning solvent and said second extraction solvent by said third extracting solvent.

Method for removal of spinning solvent from spun fiber

A fluorinated cation exchange resin catalyst is prepared by contacting a polymer containing pendant acid groups, particularly the radical --SO.sub.3 X with elemental fluorine in the presence of a water-free halogenated hydrocarbon liquid and thereafter converting the resulting pendant --SO.sub.3 X radical to a free acid.

Preparation of strong and super acid catalysts using elemental fluorine

This invention relates to a process for removal of spinning solvents from solution spun fibers by extraction with an extraction solvent such as a polyether.

A new class of sulfonated 2-(2'-hydroxyaryl)-2H-benzotriazole compounds and method for using them and other sulfonated hydroxyaryl benzotriazoles on nylon fibers to improve stain resistance and dye lightfastness has been discovered. A process is provided for improving stain resistance of nylon fibers by treatment with sulfonated aromatic-formaldehyde condensate and fluorinated dry soil resist agents.

Sulfonated 2-(2'-hydroxyaryl)-2H-benzotriazoles and/or sulfonated

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Basking Ridge, NJ, United States of America

Thomas P Izod