Other

Burlington Industries, Inc.

Prochroma Technologies

Professional Chemical & Color, Inc.

Shaw Industries, Inc.

Prochrome Technologies, Inc.

Dke Incorporated

David R Kelly

Phillip H Riggins

Barbara J Cates

Robert R Hixson

Hobert C Sweatman

Mark David Klein

Christopher S Bryant

Randy J Rawlston

Saul Rosenthal

Michael Vidal

Richard Castle

A restaurant exhaust gas purifying system for filtering an exhaust gas of a cooking process including an exhaust vent and an exhaust gas purifier coupled to the exhaust vent. The exhaust gas purifier includes a housing which has an inlet connected to the exhaust vent and an outlet, a hot box connected to and housed within the housing, a heating device connected to the housing and configured for heating the hot box, and a rotating filter rotatably mounted to and housed within the housing. The rotating filter has a rotational cycle in which at least a portion of the rotating filter passes through the hot box. The exhaust gas purifier also includes a drive connected to the housing and operably coupled to the rotating filter for rotating the rotating filter, and a stationary filter positioned in the hot box.

Exhaust gas purifying system

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.

Method for providing protective treatment to nylon fibers

A method of making a dyed nylon walk-off mat having improved washfastness includes dyeing nylon yarn, or a tufted nylon mat, in a fiber reactive dye solution having a pH in the range of about 0.5 to about 2.5. The yarn is then heated, such as by steam, at a temperature above 200.degree. F., after which the yarn is treated with an alkaline solution followed by a heat treatment. A backing, such as of rubber or vinyl, is applied to the mat at an elevated temperature. The application of the backing at elevated temperature, and the heat treatment subsequent to application of the alkaline solution, may be performed simultaneously.

Method of producing dyed nylon walk-off mats having improved

A method of dyeing polypropylene fiber to create areas of different color on the fiber. A first dye solution containing a disperse dye and a dye-promoting agent is applied to substantially the entire surface of the fiber to cover the fiber with a first color. Thereafter, and while the fiber surface is still wet with the first dye solution, a second dye solution containing a disperse dye of a second color is applied only to selected discontinuous areas of the fiber. The second dye solution displaces the first dye solution in those areas of the fiber surface to which the second dye solution is applied. Then, the fiber is subjected to an elevated temperature high enough, and for a period of time sufficient, to fix the dyes in the fiber. Preferably, the second dye solution is more viscous than the first dye solution. After the dye fixation step, the fiber is scoured to remove excess dye. If desired, the second dye solution also contains a dye-promoting agent.

Method of dyeing polypropylene fiber with more than one color

There is disclosed a process and a composition for dyeing polymeric fibers which have limited dye sites and/or difficult to penetrate chemical structures. Briefly stated, the process comprises the steps of contacting polymeric fibers with a dye composition comprising a disperse dye and a swelling agent. The fibers in contact with said dye composition are then preferably heated to a temperature and for a time sufficient to effect dispersion of a portion of said dye into said polymeric fibers. Subsequently, the fibers are treated to remove residual dye composition.

Process for dyeing polymeric fibers

Aramid fabrics treated with N-cyclohexyl-2-pyrrolidone prior to or simultaneously with aqueous print pastes promote fabric printability and produces good coloration. Saturated steam or superheated steam at a temperature of at least 100.degree. C. permeates and fixes the dye inside of the aramid fibers. Print pastes containing N-cyclohexyl-2-pyrrolidone, dye and thickener are also described.

Process for dyeing or printing/flame retarding aramids

Poly(m-phenyleneisophthalamide) fabrics are printed and optionally flame retarded in a two-step process in which the dye diffusion promoting agent N-octyl-2-pyrrolidone optionally with a flame retardant is applied following by printing and print fixation.

Process for dyeing or printing/flame retarding aramids with

Poly(m-phenyleneisophthalamide) fabrics containing N-cyclohexyl-2-pyrrolidone on them are printed with a print paste. Print pastes containing N-cyclohexyl-2-pyrrolidone are also described.

Nomex printing

Polyaramid fiber is swollen, such as by exposing it to a solvent, and while swollen a substance, such as amine or substituted amine, capable of forming an ionic bond with an acid or anionic dye, is introduced into the fiber, after which the fiber is shrunk, such as by drying, to incorporate the substance into it. Thereafter, the fiber can be dyed or printed with an anionic dye. A solution of the solvent and substance may be prepared, and the fiber contacted with the solution.

Method of treating polyaramid fiber

A method of dyeing a tufted pile carpet on location. The method comprises the steps of spraying a dye liquor onto the pile of the carpet, spraying a sealer onto the pile of the carpet to fix the dye therein and drying the carpet.

Growing community of inventors

Dalton, GA, United States of America

David R Kelly