IP Library › Granted Patent US 8,557,474
Granted Patent B2
US 8,557,474 · App. 12/955,443 · Granted Oct 15, 2013

Fluorosulfonyl group-containing monomer and its polymer, and sulfonic acid group-containing polymer

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Quick Facts
Patent No.
US 8,557,474
App. No.
12/955,443
Granted
Oct 15, 2013
Kind
B2
Abstract

A fluorosulfonyl group-containing monomer having a high polymerization reactivity and plural fluorosulfonyl groups, a fluorosulfonyl group-containing polymer and a sulfonic acid group-containing polymer, obtained by using the monomer.

Claims (4)

1. A sulfonic acid group-containing polymer comprising one or more units of tetrafluoroethylene and at least one type of units represented by the following formula (5U):

wherein each of R f1 and R f2 which are independent of each other, is a C 1-8 perfluoroalkylene group which may have an etheric oxygen atom between carbon atoms.

2. The sulfonic acid group-containing polymer according to claim 1 , which has a molecular weight of from 5×10 3 to 5 ×10 6 , and contains from 0.1 to 99.9 mol% of units represented by the formula (5U).

3. An electrolyte material for polymer electrolyte fuel cells, which to claim 1 , s the sulfonic acid group-containing polymer according to claim 1 .

Assignments (1)
CHANGE OF NAME Recorded Aug 7, 2018
From: ASAHI GLASS COMPANY, LIMITED
To: AGC INC.
Reel/Frame 046730/0786 →