Invention Grant
US09481769B2 Direct crosslinking process for preparing perfluoroalkyl-cross-linked fluoropolymer having perfluoroether pendant groups
有权
用于制备具有全氟醚侧基的全氟烷基交联含氟聚合物的直接交联方法
- Patent Title: Direct crosslinking process for preparing perfluoroalkyl-cross-linked fluoropolymer having perfluoroether pendant groups
- Patent Title (中): 用于制备具有全氟醚侧基的全氟烷基交联含氟聚合物的直接交联方法
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Application No.: US14427867Application Date: 2013-09-26
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Publication No.: US09481769B2Publication Date: 2016-11-01
- Inventor: Christopher J. Bish , Robert Clayton Wheland
- Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
- 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/US2013/061905 WO 20130926
- International Announcement: WO2014/052578 WO 20140403
- Main IPC: C08F214/18
- IPC: C08F214/18 ; C08F214/26 ; C08F214/28 ; C08J3/24 ; C08J3/00
Abstract:
This invention pertains to a novel thermal process for converting a fluoropolymer having cyano-functionalized perfluoroether pendant groups into a novel perfluoroalkyl-crosslinked fluoropolymer having perfluoroether pendant groups. The process comprises heating the fluoropolymer having cyano-functionalized perfluoroether pendant groups in the presence of Cl—F to a temperature in the range of 200 to 300° C. The fluoropolymer having cyano-functionalized perfluoroether pendant groups can first be formed into a shaped article, and the shaped article then subject to treatment in situ with Cl—F.
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