The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 02, 2018
Filed:
Oct. 29, 2014
3m Innovative Properties Company, St. Paul, MN (US);
Kai Helmut Lochhaas, Neuötting, DE;
Klaus Hintzer, Kastl, DE;
Tilman C. Zipplies, Burghausen, DE;
Harald Kaspar, Burgkirchen, DE;
Florian D. Jochum, Neuötting, DE;
Helmut Traunspurger, Julbach, DE;
Arnd Kruz, Neuss, DE;
Peter Bissinger, Diessen, DE;
3M INNOVATIVE PROPERTIES COMPANY, Saint Paul, MN (US);
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.