Allied Chemical Corporation

John Christopher Haylock

Robert A Lofquist

Theodore Largman

Harold W Tuller

Nicholas Vanderkooi, Jr

Judd Leonard Schwartz

Julian Harold Newland

Marsha H Coiner

Nucleated polyester composition containing red phosphorus

An antistatic pile carpet having a relatively pliable primary backing and a tufted surface, said surface being comprised of fibers selected from the group consisting of polyester and polyamide fibers having grafted thereon from 1 to 5 percent by weight of a conductive polymeric salt of a polyethylenimine having a molecular weight of 200 to 10,000 and a sulfonic acid compound of the formula ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 are individually hydrogen or a lower alkyl radical having 1-3 carbon atoms.

Antistatic carpet

This invention discloses the improved method of making nylon cationic dyeable whereby the soluble lithium, magnesium or calcium salt of a sulfonated polystyrene is added, to provide improved lightfastness and ozone resistance over conventional cationic dyeable nylon.

Ozone resistant, cationic dyeable nylon containing lithium, magnesium or

It has been suggested that a high strength polycaproamide fiber having excess number of carboxyl end groups over amino end groups can be produced by melt spinning a polymer prepared by polymerizing e-caprolactam and reacting the polymer with a dibasic carboxylic acid containing at least six carbon atoms. However, with incorporation of this dicarboxylic acid reactant in continuous operation, serious problems have been encountered in melt-spinning of the polymer due to the frequent occurrence of 'nubs' or enlarged places in the extruded polyamide filament. It has now been found that the occurrence of said nubs in the fiber can be greatly reduced by utilizing certain cyclic tetracarboxylic acid dianhydrides and reacting the dianhydride at the end of the polymerization. Moreover, dyeing properties of the fiber may be more readily controlled.

Production of polycaproamide fiber wherein polycaproamide is reacted

Production of polycaproamide fiber from polycaproamide reacted with

A method of treating polycarbonamide fiber, such as nylon 6 yarn for carpets, has been discovered to increase dye fastness when the dyed fiber is exposed to ozone. The method is coating the fibers with a tertiary amine, or a substituted piperidine, morpholine, or piperazine compound. The compound must contain at least one moiety of straight or branched chain alkyl, alkenyl or aralkyl containing 6 to 24 carbon atoms.

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Midlothian, VA, United States of America

John Christopher Haylock