Invention Grant
- Patent Title: Peroxide curable fluoropolymers obtainable by polymerization using non-fluorinated polyhydroxy emulsifiers
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Application No.: US15033301Application Date: 2014-10-29
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Publication No.: US10087307B2Publication Date: 2018-10-02
- Inventor: Kai Helmut Lochhaas , Klaus Hintzer , Tilman C. Zipplies , Harald Kaspar , Florian D. Jochum , Helmut Traunspurger , Arnd Kruz , Peter Bissinger
- Applicant: 3M INNOVATIVE PROPERTIES COMPANY
- 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 Thomas M. Spielbauer
- Priority: EP13190890 20131030
- International Application: PCT/US2014/062878 WO 20141029
- International Announcement: WO2015/066166 WO 20150507
- Main IPC: C08K5/14
- IPC: C08K5/14 ; C08K3/30 ; C08K5/1545 ; C08F214/22 ; C08K5/17

Abstract:
Described are methods of making a curable fluoropolymer having repeating units derived from vinylidenfluoride (VDF) and at least one perfluorinated monomer selected from hexafluoropropene (HFP), tetrafluoroethene (TFE), a perfluorovinyl ether (PAVE), a perfluoroallylether (PAAVE) or a combination thereof. The method includes polymerizing the monomers in an aqueous medium in a radical reaction containing one or more reaction initiators, one or more chain transfer agent containing one or more halogens selected from iodine, bromine or a combination thereof and one or more non-fluorinated aliphatic polyhydroxy emulsifiers. The polymerization is carried out without adding a fluorinated emulsifier. Also provided are curable fluoropolymers obtainable by such methods and cured fluoropolymers obtainable by curing the curable fluoropolymers, and their applications.
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