Invention Grant
US09284665B2 Method for removing sulfur from fiber using halide salt ion exchange
有权
使用卤化物离子交换从纤维中除去硫的方法
- Patent Title: Method for removing sulfur from fiber using halide salt ion exchange
- Patent Title (中): 使用卤化物离子交换从纤维中除去硫的方法
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Application No.: US14371467Application Date: 2012-01-11
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Publication No.: US09284665B2Publication Date: 2016-03-15
- Inventor: Christopher William Newton , David J. Rodini , Joseph Lenning Lowery , Steven R. Allen , Vlodek Gabara
- Applicant: Christopher William Newton , David J. Rodini , Joseph Lenning Lowery , Steven R. Allen , Vlodek Gabara
- Applicant Address: US DE Wilmington
- Assignee: E I DU PONT DE NEMOURS AND COMPANY
- Current Assignee: E I DU PONT DE NEMOURS AND COMPANY
- Current Assignee Address: US DE Wilmington
- International Application: PCT/US2012/020856 WO 20120111
- International Announcement: WO2013/105939 WO 20130718
- Main IPC: C08G63/02
- IPC: C08G63/02 ; D01F6/80 ; D01D10/06 ; C08G64/00
Abstract:
The present invention concerns methods for removing sulfur from a fiber made from a polymer comprising imidazole groups, said method comprising: a) contacting never-dried sulfate anion containing polymeric-fiber with an aqueous salt solution comprising halide anions to displace at least a portion of the sulfate anions with halide anions; and b) rinsing the fiber to remove displaced sulfate anions.
Public/Granted literature
- US20150073118A1 METHOD FOR REMOVING SULFUR FROM FIBER USING HALIDE SALT ION EXCHANGE Public/Granted day:2015-03-12
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