Roland L Hawkins

US Patent:

40691608, Jan 17, 1978

Filed:

Jan 20, 1975

Appl. No.:

5/542683

Inventors:

Roland L. Hawkins - Spartanburg SC

Assignee:

Hoechst Fibers Industries, Division of American Hoechst Corporation - Spartanburg SC

International Classification:

D06M 1316
D06M 1320
D06M 1326

US Classification:

252 89

Abstract:

An improved, low fuming, thermally stable, texturing finish for a synthetic filamentary material is disclosed comprising 40 to 75 percent of a lubricant, exemplified by pentaerythritol tetrapelargonate; 20 to 50 percent of an emulsifier, exemplified by condensates of castor oil with from about 2 to about 12 moles of ethylene oxide; 2 to 20 percent of an antistat-auxiliary emulsifier, such as a neutralized phosphate ester of an alcohol; and optionally 0 to 2 percent of a thermal stabilizer, exemplified by a condensate of 3-methyl-6-tert-butylphenol with crotonaldehyde. An oil in water emulsion is produced having an oil content of from about 5 to 20 weight percent.

US Patent:

42948835, Oct 13, 1981

Filed:

Aug 17, 1979

Appl. No.:

6/067294

Inventors:

Roland L. Hawkins - Spartanburg SC

Assignee:

Hoechst Fibers Industries, Div. of American Hoechst Corporation - Spartanburg SC

International Classification:

D02G 300

US Classification:

428361

Abstract:

A composition for short cut, synthetic polymeric staple fibers that are used in a wet lay application for the production of nonwovens is disclosed and claimed herein along with a fiber having the finish thereon and the process for dispersing the fiber in an aqueous medium. Synthetic polymeric filaments are cut into staple lengths, generally in a range of from about 1/4 to about 3 inches in length, and are dispersed in an aqueous medium in conjunction with a composition that includes as an essential ingredient, an ethoxylated primary emulsifier that contains at least five moles of ethylene oxide, and exhibits a surface tension of at least 30 dynes per centimeter in a 0. 10 weight percent aqueous solution at 25 degrees Centigrade plus or minus 2 degrees Centigrade. Optionally, a lubricant may be added to the finish composition to improve processability of the fiber during manufacture. The lubricant should be compatible with the primary emulsifier.

US Patent:

41371810, Jan 30, 1979

Filed:

Jul 22, 1977

Appl. No.:

5/818127

Inventors:

Roland L. Hawkins - Spartanburg SC

Assignee:

Hoechst Fibers Industries - Spartanburg SC

International Classification:

D06M 1310

US Classification:

252 89

Abstract:

A composition for short cut, synthetic polymeric staple fibers that are used in a wet lay application for the production of nonwovens is disclosed and claimed herein along with a fiber having the finish thereon and the process for dispersing the fiber in an aqueous medium. Synthetic polymeric filaments are cut into staple lengths, generally in a range of from about 1/4 to about 3 inches in length, and are dispersed in an aqueous medium in conjunction with a composition that includes as an essential ingredient, an ethoxylated primary emulsifier that contains at least five moles of ethylene oxide, and exhibits a surface tension of at least 30 dynes per centimeter in a 0. 10 weight percent aqueous solution a 25. degree. C. plus or minus 2. degree. C. Optionally, a lubricant may be added to the finish composition to improve processability of the fiber during manufacture.

US Patent:

41795431, Dec 18, 1979

Filed:

Aug 19, 1976

Appl. No.:

5/715719

Inventors:

Roland L. Hawkins - Spartanburg SC

Assignee:

Hoechst Fibers Industries, Division of American Hoechst Corporation - Spartanburg SC

International Classification:

D02G 300

US Classification:

428361

Abstract:

A composition for short cut, synthetic polymeric staple fibers that are u in a wet lay application for the production of nonwovens is disclosed and claimed herein along with a fiber having the finish thereon and the process for dispersing the fiber in an aqueous medium. Synthetic polymeric filaments are cut into staple lengths, generally in a range of from about 1/4 to about 3 inches in length, and are dispersed in an aqueous medium in conjunction with a composition that includes as an essential ingredient, an ethoxylated primary emulsifier that contains at least five moles of ethylene oxide, and exhibits a surface tension of at least 30 dynes per centimeter in a 0. 10 weight percent aqueous solution at 25 degrees Centigrade plus or minus 2 degrees Centigrade. Optionally, a lubricant may be added to the finish composition to improve processability of the fiber during manufacture. The lubricant should be compatible with the primary emulsifier.

US Patent:

54190231, May 30, 1995

Filed:

Aug 23, 1994

Appl. No.:

8/294893

Inventors:

Roland L. Hawkins - Spartanburg SC
Lotfy L. Saleh - Charlotte NC

Assignee:

Hoechst Celanese Corporation - Somerville NJ

International Classification:

D02G 112

US Classification:

28267

Abstract:

An apparatus for crimping continuous tow of textile material and application of the finish to the crimped continuous tow, including a pair of rollers and a stuffer box chamber having two regions therein. In particular, the stuffer box chamber has a first region for crimping the tow and a larger second region for application of a finish to the tow. Using the novel apparatus to crimp the tow and apply finish thereto, improves adherence of the finish to the tow.

US Patent:

41156218, Sep 19, 1978

Filed:

Nov 11, 1977

Appl. No.:

5/850540

Inventors:

Roland L. Hawkins - Spartanburg SC

International Classification:

B05D 302
B32B 2703

US Classification:

428395

Abstract:

An improved, low fuming, thermally stable, texturing finish for a synthetic filamentary material is disclosed comprising 40 to 75 percent of a lubricant, exemplified by pentaerythritol tetrapelargonate; 20 to 50 percent of an emulsifier, exemplified by condensates of castor oil with from about 2 to about 12 moles of ethylene oxide; 2 to 20 percent of an antistat-auxiliary emulsifier, such as a neutralized phosphate ester of an alcohol; and optionally 0 to 2 percent of a thermal stabilizer, exemplified by a condensate of 3-methyl-6-tert-butylphenol with crotonaldehyde. An oil in water emulsion is produced having an oil content of from about 5 to 20 weight percent.

US Patent:

48163368, Mar 28, 1989

Filed:

Apr 2, 1987

Appl. No.:

7/034130

Inventors:

Anthony L. Allou - Inman SC
Roland L. Hawkins - Spartanburg SC

Assignee:

Hoechst Celanese Corporation - Somerville NJ

International Classification:

D02G 300

US Classification:

428361

Abstract:

A two-component staple fiber finish is disclosed which renders polyester staple fiber having low to normal modulus and tenacity-at-break fit for "100%" open end spinning. A synthetic fiber having from about 0. 08 to about 0. 15 weight percent, based on the total weight of the fiber, of a primary finish comprising (a) from 25 to 85 weight percent of at least one alkyl phosphate ester salt, and (b) from 15 to 75 weight percent of a second component selected from the group consisting of quaternary trialkyl ethyl ammonium ethosulfate salts and the reaction products of polyoxyethylene ethers and C. sub. 8 -C. sub. 22 fatty acids is claimed. The use of a secondary lubricant to enhance the carding and drawing characteristics of the staple fiber is also disclosed.

US Patent:

48571482, Aug 15, 1989

Filed:

Aug 17, 1979

Appl. No.:

6/067465

Inventors:

Roland L. Hawkins - Spartanburg SC

Assignee:

Hoechst Fibers Industries - Spartanburg SC

International Classification:

D21F 1100

US Classification:

1621572

Abstract:

A composition for short cut, synthetic polymeric staple fibers that are used in a wet lay application for the production of nonwovens is disclosed and claimed herein along with a fiber having the finish thereon and the process for dispersing the fiber in an aqueous medium. Synthetic polymeric filaments are cut into staple lengths, generally in a range of from about 1/4 to about 3 inches in length, and are dispersed in an aqueous medium in conjunction with a composition that includes as an essential ingredient, an ethoxylated primary emulsifier that contains at least five moles of ethylene oxide, and exhibits a surface tension of at least 30 dynes per centimeter in a 0. 10 weight percent aqueous solution at 25 degrees Centigrade plus or minus 2 degrees Centigrade. Optionally a lubricant may be added to the finish composition to improve processability of the fiber during manufacture. The lubricant should be compatible with the primary emulsifier.