Invention Grant
- Patent Title: Process for manufacturing clean fluoropolymers
- Patent Title (中): 制造清洁含氟聚合物的方法
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Application No.: US12682702Application Date: 2008-10-10
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Publication No.: US08541499B2Publication Date: 2013-09-24
- Inventor: Klaus Hintzer , Kai H. Lochhaas , Michael Jürgens , Harald Kaspar , Tilman C. Zipplies , André Streiter
- Applicant: Klaus Hintzer , Kai H. Lochhaas , Michael Jürgens , Harald Kaspar , Tilman C. Zipplies , André Streiter
- Applicant Address: US MN Saint Paul
- Assignee: 3M Innovative Properties Company
- Current Assignee: 3M Innovative Properties Company
- Current Assignee Address: US MN Saint Paul
- Agent C. Michael Geise
- International Application: PCT/US2008/079529 WO 20081010
- International Announcement: WO2009/049168 WO 20090416
- Main IPC: C08L27/18
- IPC: C08L27/18

Abstract:
There is provided a fluoroelastomer characterized by containing one type or more types of fluorinated emulsifiers represented by the formula: F—(CF2)t-[O(CF2)n]m-O—(CHF)o-(CF2)p-X where m=0 to 3; n=1 to 5; o=0 to 1; p=1 to 3; t=1 to 10; and where when t=2 than o≠0; and further where X is selected from a group consisting of a carboxyl acid group and a salt of a carboxylic acid group. A method for preparing fluoroelastomers by using such fluorinated emulsifiers in emulsion polymerization of fluoromonomers and articles containing such fluoroelastomers are also provided. A fluorinated elastomer dispersion including an aqueous mixture of a crosslinkable fluorinated elastomer and such fluorinated emulsifiers are also provided. The fluoroelastomers created with such fluorinated emulsifiers are essentially free of cations other than NH4+ and H+ and have a low glass transition temperature.
Public/Granted literature
- US20100305262A1 PROCESS FOR MANUFACTURING CLEAN FLUOROPOLYMERS Public/Granted day:2010-12-02
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