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.:
Date of Patent:
Sep. 03, 2019
Filed:
Apr. 30, 2018
E I Du Pont DE Nemours and Company, Wilmington, DE (US);
Steven R Allen, Midlothian, VA (US);
Vlodek Gabara, Richmond, VA (US);
Joseph Lenning Lowery, Midlothian, VA (US);
Steven Raymond Lustig, Landenberg, PA (US);
Christopher William Newton, Richmond, VA (US);
David J Rodini, Midlothian, VA (US);
Andrew J Sitter, Mechanicsville, VA (US);
E I DU PONT DE NEMOURS AND COMPANY, Wilmington, DE (US);
Abstract
The present invention concerns fiber made from a polymer comprising imidazole groups, fiber further having: i) a halide anion, the halide anion being present in an amount of 0.05 to 20.1 weight percent, based on weight of fiber; and ii) sulfur, wherein the sulfur is present in the fiber in an amount of 0.05 to 3 weight percent; the fiber exhibiting hydrochloric acid evolution as identified by TGA-IR between 277.13° C. to 448.19° C.