Peroxide curable fluoropolymers obtainable by polymerization with non-fluorinated emulsifiers

US10875948B2 · kind B2 · utility

Assignee

• 3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

• Florian D. Jochum · Neuötting, DE
• Klaus Hintzer · Woodbury, US
• Kai H. Lochhaas · Neuötting, DE
• Harald Kaspar · Altötting, DE
• Tilman C. Zipplies · Burghausen, DE
• Helmut Traunspurger · Julbach, DE

Key dates

• Filing date: Feb 22, 2016
• Grant date: Dec 29, 2020
• Expiry date: Aug 20, 2036

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F259/08
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Curable fluoropolymer containing repeating units derived from VDF and TFE and at least one other fluorinated comonomer and further containing —CF2CH2I end groups and branching sites derived from one or more perfluorinated bisolefinic ether(s) used as modifier(s), wherein the one or more perfluorinated bisolefinic ether(s) used as modifier(s) correspond to the general formula: CF2═CF—(CF2)n—O—(R1)—O—(CF2)mCF═CF2 wherein n and m are independent from each other either 1 or 0 and wherein R1 represents a perfluorinated linear or branched, cyclic or acyclic aliphatic or aromatic hydrocarbon residue that may be interrupted by one or more oxygen atoms and comprises up to 30 carbon atoms. Further provided are methods of making the curable fluoropolymers and for making an article containing the curable polymers.