Tetrafluoroethylene/hexafluoropropylene copolymers having pendant sulfonyl groups

US10717795B2 · kind B2 · utility

Assignee

• 3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

• Denis Duchesne · Woodbury, US
• Klaus Hintzer · Woodbury, US
• Harald Kaspar · Altötting, DE
• Kai H. Lochhaas · Neuötting, DE
• Jens Schrooten · Mühldorf a. Inn, DE
• Tilman C. Zipplies · Burghausen, DE

Key dates

• Filing date: Feb 12, 2016
• Grant date: Jul 21, 2020
• Expiry date: Feb 12, 2036

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2327/18
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A copolymer having tetrafluoroethylene units, hexafluoropropylene units, and units independently represented by formula in a range from 0.001 to 2 mole percent, based on the total amount of the copolymer. In these units, a is 0 or 1, each b is independently from 1 to 4, c is 0 to 4, d is 0 or 1, and e is 1 to 6. In the —SO2X groups, X is independently —F, —NH2, —OH, or —OZ, wherein Z is independently a metallic cation or a quaternary ammonium cation. The copolymer has a melt flow index in a range from 20 grams per 10 minutes to 40 grams per 10 minutes. The copolymer can be extruded to make articles, such as insulated cables. A method of making the copolymer is also disclosed.