Sulfur-containing imidazole fiber having ionically bonded halides
AssigneeE. I. Du Pont de Nemours and Company
InventorsSteven R Allen, Vlodek Gabara, Joseph Lenning Lowery, Steven Raymond Lustig, Christopher William Newton, David J Rodini, Andrew J Sitter
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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.
Claims17
A fiber made from a polymer comprising imidazole groups, the fiber further having:
- i) chlorine anions 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, based on the weight of the fiber,
- the fiber exhibiting hydrochloric acid evolution as identified by TGA-IR between 277.13° C. to 448.19° C.
Dependencies are inferred from the claim text.