Patent · US Active

Fluorinated copolymer and compositions and articles including the same

US11377510B2 · kind B2 · utility

0Cited by

63References

20Claims

0Family size

Assignee

3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

Lisa P. Chen · Okabena, US
Gregg D. Dahlke · Windom, US
Denis Duchesne · Woodbury, US
Steven J. Hamrock · Saint Paul, US
Klaus Hintzer · Woodbury, US
Markus E. Hirschberg · Mühldorf, DE
Arne Thaler · Emmerting, DE
Tilman C. Zipplies · Burghausen, DE

Key dates

Filing date	Sep 14, 2018
Grant date	Jul 5, 2022
Priority date	—
Expiry date	Apr 12, 2039

Classification

Technology area (CPC H)Electricity
CPC primaryH01M2300/0082
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The copolymer includes divalent units represented by formula —[CF2—CF2]—, divalent units represented by formula: (I), and one or more divalent units independently represented by formula: (II) When Z is hydrogen, the copolymer has an alpha transition temperature of up to 100 ?C. The copolymer has an —SO3Z equivalent weight in a range from 300 to 1400, and a variation of the copolymer in which —SO3Z is replaced with —SO2F has a melt flow index of up to 80 grams per ten minutes measured at a temperature of 265° C. and at a support weight of 5 kg. A catalyst ink or polymer electrolyte membrane including the copolymer are also provided.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.