Invention Grant
US09175110B2 Fluoropolymer resin treatment employing melt extrusion and exposure to oxygen source to reduce discoloration
有权
使用熔融挤出和暴露于氧源的含氟聚合物树脂处理以减少变色
- Patent Title: Fluoropolymer resin treatment employing melt extrusion and exposure to oxygen source to reduce discoloration
- Patent Title (中): 使用熔融挤出和暴露于氧源的含氟聚合物树脂处理以减少变色
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Application No.: US13875338Application Date: 2013-05-02
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Publication No.: US09175110B2Publication Date: 2015-11-03
- Inventor: Paul Douglas Brothers , Gregory Allen Chapman , Subhash Vishnu Gangal
- Applicant: E I DU PONT DE NEMOURS AND COMPANY
- Applicant Address: US DE Wilmington
- Assignee: THE CHEMOURS COMPANY FC, LLC
- Current Assignee: THE CHEMOURS COMPANY FC, LLC
- Current Assignee Address: US DE Wilmington
- Main IPC: C08F114/26
- IPC: C08F114/26 ; C08F114/18 ; C08F8/06 ; C08F214/26 ; C08F6/00 ; C08F6/28 ; C08F14/26 ; C08F6/22 ; B29C47/00 ; B29K27/18 ; B29C47/10
Abstract:
Process for reducing thermally induced discoloration of melt-processible fluoropolymer resin produced by polymerizing fluoromonomer in an aqueous medium to form aqueous fluoropolymer dispersion and isolating said fluoropolymer from said aqueous medium to obtain said fluoropolymer resin. The process comprises melt extruding said fluoropolymer resin to produce molten fluoropolymer resin; and exposing said molten fluoropolymer resin to an oxygen source during said melt extruding.
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