Allied Corporation

Allied Chemical Corporation

Peter R Saunders

Robert A Lofquist

Ian C Twilley

John C Haylock

Garland L Turner

Raymond J Biron

A bristle material is disclosed having improved stiffness comprised of a thermoplastic matrix comprising polybutylene terephthalate and containing an abrasive filler.

Low moisture absorption abrasive bristle of polybutylene terephthalate

This invention is a nylon fiber useful for improved comfort for wearers of apparel fabric made therefrom comprising (a) from about 5 to 15 percent by weight of poly (N,N-dimethylacrylamide) having a molecular weight which in a 25% aqueous solution gives a viscosity of from about 20 to 1 000 centipoise (0.02 to 1.0 Pa.s) at 25.degree. C. and (b) correspondingly from about 85 to 95% by weight nylon.

Nylon comfort fiber containing poly(N,N-dimethylacrylamide)

A bristle material is disclosed having improved stiffness, and comprised of a thermoplastic matrix comprising a blend of nylon and polyester and containing an abrasive filler.

Low moisture absorption bristle of nylon and polyester

Preparation of a fluorocarbon compound used to make a soil-resistant yarn is improved by removing most of the impurities from the fluoro-carbon compound mass with heat and vacuum after the final washing step and then adding an emulsifier to the fluorocarbon compound mass so that the mass can be handled as a liquid concentrate rather than a tacky solid.

Method of preparation of fluorocarbon compounds

When from about 0.5% to about 5% of N,N'-disubstituted thioureas are coated on nylon fiber, improved dyefastness is achieved compared to an untreated dyed nylon fiber when this fiber is exposed to ozone.

Substituted thioureas to inhibit ozone fading of dyed polyamides

When from about 0.4 percent to about 3 percent of an alkanolamine such as: ##EQU1## where R is an alkylene of 1 to 13 carbon atoms, an aralkyl such as xylylene, or cycloalkyl, R.sub.1, R.sub.2, R.sub.3, and R.sub.4 are H, alkyl of 1-2 carbon atoms or phenyl wherein R.sub.1, R.sub.2, R.sub.3, and R.sub.4 can be the same or different, is coated on nylon fiber, improved dyefastness is achieved when the fiber is exposed to ozone.

Alkanolamines to reduce ozone attack on dyes in polyamide fibers

When from about 0.4% to about 5% of tertiary amines ##EQU1## WHERE R is an alkyl radical of 8-25 carbon atoms, R' is an alkylene radical of 2 to 10 carbon atoms, R' and R'' are hydrogen, a phenyl, or an alkyl radical of 1 to 3 carbons, but where R' and R'' are not both hydrogen, and x, y, and z are each at least 1 (x+y) is not greater than 6, preferably 2, and (x+y+z) is not greater than 9, preferably 3, are coated on nylon fiber, or are added to the dyebath, improved dyefastness is achieved compared to an untreated dyed nylon fiber when this fiber is exposed to ozone.

Growing community of inventors

Richmond, VA, United States of America

Peter R Saunders