Invention Grant
US09315923B2 Process for preparing yarn derived from aramid copolymer fiber having low residual sulfur
有权
用于制备具有低残留硫的芳族聚酰胺共聚物纤维得到的纱线的方法
- Patent Title: Process for preparing yarn derived from aramid copolymer fiber having low residual sulfur
- Patent Title (中): 用于制备具有低残留硫的芳族聚酰胺共聚物纤维得到的纱线的方法
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Application No.: US14371444Application Date: 2012-01-11
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Publication No.: US09315923B2Publication Date: 2016-04-19
- Inventor: Steven R. Allen , Vlodek Gabara , Joseph Lenning Lowery , Steven Raymond Lustig , Christopher William Newton , David J. Rodini , Andrew J. Sitter
- Applicant: Steven R. Allen , Vlodek Gabara , Joseph Lenning Lowery , Steven Raymond Lustig , Christopher William Newton , David J. Rodini , Andrew J. Sitter
- 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/US2012/020908 WO 20120111
- International Announcement: WO2013/105949 WO 20130718
- Main IPC: D01F6/80
- IPC: D01F6/80 ; D02G3/02 ; D01F8/16 ; D01D10/06 ; D01F6/74 ; D01F11/08 ; D01D5/06
Abstract:
The present invention concerns processes for producing a yarn comprising polymer comprising imidazole groups, the process having the following steps: (a) spinning a solution of polymer in sulfuric acid to give rise to a plurality of dope filaments; (b) coagulating the plurality of dope filaments into a multi-filament as-spun yarn; and (c) washing the as-spun multi-filament yarn with an aqueous acid comprising a halide or an aqueous salt comprising a halide or combination thereof.
Public/Granted literature
- US20150021812A1 PROCESS FOR PREPARING YARN DERIVED FROM ARAMID COPOLYMER FIBER HAVING LOW RESIDUAL SULFUR Public/Granted day:2015-01-22
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