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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 11339508 B1

PDFFull Text
Date of Patent:
May. 24, 2022

Filed:

Jan. 31, 2020

Process for forming a yarn comprising bicomponent filaments

Applicant:

Dupont Safety & Construction, Inc., Wilmington, DE (US);

Inventors:

Mark William Andersen, Charlottesville, VA (US);

Mark T. Aronson, Midlothian, VA (US);

Christopher William Newton, Richmond, VA (US);

Thomas Wayne Steinruck, Glen Allen, VA (US);

B. Lynne Wiseman, Richmond, VA (US);

Reiyao Zhu, Moseley, VA (US);

Assignee:

DUPONT SAFETY & CONSTRUCTION, INC., Wilmington, DE (US);

Attorney:
Primary Examiner:

Leo B Tentoni

Int. Cl.
CPC ...
D01D 1/02 (2006.01); D01D 5/04 (2006.01); D01D 5/32 (2006.01); D01D 5/34 (2006.01); D01F 6/40 (2006.01); D02G 3/04 (2006.01); D02G 3/44 (2006.01); D01D 4/02 (2006.01); D01D 10/06 (2006.01); D01D 10/02 (2006.01); D01D 5/26 (2006.01); D01D 5/38 (2006.01); A41D 13/008 (2006.01); A41D 13/02 (2006.01); B29C 48/05 (2019.01); B29C 48/21 (2019.01); B29C 48/00 (2019.01); D01F 1/09 (2006.01); D01F 8/08 (2006.01); D01F 8/12 (2006.01); D01F 1/10 (2006.01); D01F 6/60 (2006.01); B29K 77/00 (2006.01); B29L 31/00 (2006.01); A41D 31/26 (2019.01);
U.S. Cl.
CPC ...
D02G 3/047 (2013.01); A41D 13/008 (2013.01); A41D 13/02 (2013.01); B29C 48/022 (2019.02); B29C 48/05 (2019.02); B29C 48/21 (2019.02); D01D 4/02 (2013.01); D01D 5/26 (2013.01); D01D 5/38 (2013.01); D01D 10/02 (2013.01); D01D 10/06 (2013.01); D01F 1/09 (2013.01); D01F 1/106 (2013.01); D01F 6/605 (2013.01); D01F 8/08 (2013.01); D01F 8/12 (2013.01); D02G 3/441 (2013.01); D02G 3/443 (2013.01); A41D 31/26 (2019.02); A41D 2600/20 (2013.01); B29K 2077/00 (2013.01); B29K 2995/0016 (2013.01); B29L 2031/707 (2013.01); D10B 2321/101 (2013.01); D10B 2331/021 (2013.01); D10B 2401/16 (2013.01);
Abstract

A yarn comprising a plurality of bicomponent filaments having a first region comprising a first polymer composition and a second region comprising a second polymer composition, each of the first and second regions being distinct in the bicomponent filaments; each bicomponent filament comprising 5 to 60 weight percent of the first polymer composition and 95 to 40 weight percent of the second polymer composition; wherein the first polymer composition comprises aramid polymer containing 0.5 to 20 weight percent discrete homogeneously dispersed carbon particles and the second polymer composition comprises modacrylic polymer being free of discrete carbon particles; the yarn having a total content of 0.1 to 5 weight percent discrete carbon particles.

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