Randy Joe Rawlston

US Patent:

6719810, Apr 13, 2004

Filed:

May 12, 2003

Appl. No.:

10/436042

Inventors:

David R. Kelly - Ft. Oglethorpe GA 30742
Randy J. Rawlston - Hixson TN 37343
Robert R. Hixson - Rossville GA 30741

International Classification:

D06P 310

US Classification:

81156, 8181, 81276, 811556, 811558, 811565, 8539, 8543

Abstract:

The invention provides a method for reacting a variety of protective entities to form covalent bonds with nylon, which entities can be applied directly in the dyebath with the dyes that are used to dye the nylon without blocking such dyes or interfering with their color yield. Such protective entities include stain-blockers, chlorine resist agents, fire retardants, UV absorbers, antimicrobial agents, fume fade protectors, soil-resist agents and anti-stats. According to this method, a protective entity is reacted with a moiety having the capability of forming a covalent bond with a nylon fiber to create a modified protective entity that is adapted to form a covalent bond with a nylon fiber. The modified protective entity is added to a dyebath containing one or more dyes selected from the group consisting of fiber reactive dyes, acid dyes, acid-premetalized dyes and disperse dyes. The dyebath is applied to nylon fiber at a pH within the range of about 0. 5 to about 6.

US Patent:

20010052154, Dec 20, 2001

Filed:

Mar 13, 2001

Appl. No.:

09/804807

Inventors:

David Kelly - Ft. Oglethorpe GA, US
Randy Rawlston - Hixson TN, US
Robert Hixson - Rossville GA, US

International Classification:

D06M010/00

US Classification:

008/115510

Abstract:

The invention provides a method for reacting a variety of protective entities to form covalent bonds with nylon, which entities can be applied directly in the dyebath with the dyes that are used to dye the nylon without blocking such dyes or interfering with their color yield. Such protective entities include stain-blockers, chlorine resist agents, fire retardants, UV absorbers, antimicrobial agents, fume fade protectors, soil-resist agents and anti-stats. According to this method, a protective entity is reacted with a moiety having the capability of forming a covalent bond with a nylon fiber to create a modified protective entity that is adapted to form a covalent bond with a nylon fiber. The modified protective entity is added to a dyebath containing one or more dyes selected from the group consisting of fiber reactive dyes, acid dyes, acid-premetalized dyes and disperse dyes. The dyebath is applied to nylon fiber at a pH within the range of about 0.5 to about 6.5, and an alkali solution is then applied to the fiber.

US Patent:

54456533, Aug 29, 1995

Filed:

Mar 28, 1994

Appl. No.:

8/218753

Inventors:

Robert R. Hixson - Rossville GA
Randy J. Rawlston - Hixson TN
Hobert C. Sweatman - Soddy TN

Assignee:

Rossville Yarn, Inc. - Rossville GA

International Classification:

D06P 310
D06P 382
C09B 6200

US Classification:

8531

Abstract:

A method of dyeing nylon, particularly cationic dyeable Type 6 and 66 nylon and light dyeable Type 66 nylon, so that the dyed fiber will resist taking on further dye and will have a high degree of wash and bleed fastness when the dyed fiber is subjected to a further high temperature aqueous dye bath. The method includes providing a bifunctional dye solution having a very low pH, i. e. no higher than 1. 5. The dye is applied to the fiber with a degree of wet pick-up exceeding 100% by weight of the fiber. The fiber is then steamed, washed, and dried, and contacted by an alkaline solution, such as a trisodium phosphate solution. Thereafter, the fiber is autoclaved. Such a dyed nylon fiber can be combined with an undyed nylon fiber to produce a textile product. When such a product is subjected to a dyeing operation, to provide the undyed nylon with a color different from the color of the previously-dyed fiber, the previously-dyed fiber will not bleed or wash out, and will resist taking on the dye being used to color the undyed nylon.