E.i. Dupont De Nemours and Company

Gm Global Technolgoy Operations, Inc.

Ei Consoltex Inc.

Consoltex, Inc.

Hamid M Ghorashi

Gurdial Singh

Robert B Croman

Hung H Yang

Michael W Bowen

John C Norman

Robert Valentine Kasowski

Gary Lee Hendren

Portia D Yarborough

James H Lindsay

Donald E Shaffer

Andre Capt

Daniel Routhier

Gary G Brown

Joseph La Sala

The visual appearance of undyed or unpigmented para-aramid fabric generally present in an article of clothing is restored by contacting the fabric with an aqueous dye solution or dispersion to dye the aramid fibrils present on the yarns. Use of a conventional washing machine is suitable in the fabric contact with the dye.

Process for restoring the natural appearance of para-aramid clothing

The visual appearance of pigmented or dyed para-aramid fabric generally present in an article of clothing is restored by contacting the fabric with an aqueous dye solution or dispersion to dye abraded fibrils attached to the aramid filaments in the fabric. Use of a conventional washing machine is suitable in the fabric contact with the dye.

Process for restoring the appearance of pigmented or dyed para-aramid fabric

The present invention provides a durable to a wicking aramid fabric formed from crystallized aramid yarns or mixtures of aramid and other yarns for use in firefighter turnout gear and other protective apparel and a process for making this durable wicking fabric.

Moisture wicking aramid fabric and method for making such fabric

Articles made from poly(p-phenylene terephthalamide) polymer having an inherent viscosity of 1.5 to 4 dL/g, 5 to 20 mols of sulfur, as sulfonate, per 100 mols of polymer repeat units, and at least 0.5 weight percent of tungsten oxides or molybdenum oxides; and the process for making such articles.

Poly(p-phenylene terephthalamide) articles of high flame strength

A process for preparing a textile fiber of sulfonated poly(p-phenylene terephthalamide) that is rapidly dyeable to deep shades.

Process of making textile fibers of sulfonated poly(p-phenylene

Heat flow through a protective garment is reduced if the shell is a woven fabric extends laterally and expands away from the wearer upon exposure to a high heat flux.

Protective garments comprising an outer shell fabric of woven aramid

A textile fiber of sulfonated poly(p-phenylene terephthalamide) that is rapidly dyeable to deep shades.

Textile fibers of sulfonated poly(p-phenylene terephthalamide)

A process for preparing an insulated metal wire with a melt-coated, adherent sheath of a polymer consisting essentially of the following repeat units: ##STR1## wherein n is 4 or 5; X is from 0.01 to 0.50; and Ar is at least one divalent aromatic radical selected from the group consisting of 1,3-phenylene, 1-methyl-2,4-phenylene and 3,4'-oxydiphenylene, comprising heating the bare wire to a temperature in excess of the Tg of the polymer and melt-coating the wire with the polymer. This produces an insulated wire that is stable to high temperatures and is resistant to water crazing, cracking and loss of coating.

Method of coating a metal wire with a temperature and stress resistant

Poly(p-phenylene terephthalamide) (PPD-T) fibers which have been dried are dyed with cationic dyes, or with disperse or acid dyes, by heating the fibers under a high pressure from 29 to 108 psi and at a temperature from 130.degree. to 180.degree. C.

Method of dyeing aromatic polyamide fibers with water-soluble dyes

Copper wire insulated with a certain copolyamide sheath is stable to high temperatures and is resistant to water crazing, cracking and loss of coating.

Coated wire

A high strength fibrid-floc sheet is made of a floc which can be carbon, aramid or glass. The fibrids are made from the following units: ##STR1## where n is 4 or 5; X is from 0.03 to 0.30 and Ar is a radical selected from 3,4'-oxydiphenylene, 4,4'-oxydiphenylene, 4,4'-sulfonyldiphenylene, 1,3-phenylene, 1-methyl-2,4-phenylene, and mixtures of such radicals with each other or mixtures of such radicals with up to 50 mol percent of 1,4-phenylene radicals based on the mixtures of radicals.

High strength papers from floc and fibrids

Aromatic polyamide fibers, which have been dried and/or crystallized, are steam dyed with a water-soluble dye padded onto the surface of fibers, along with a small amount of a carrier.

Thermoprocessible aramid matrix polymer based composites have high flex and short beam shear strengths and low moisture uptake.

Growing community of inventors

Midlothian, VA, United States of America

Hamid M Ghorashi