Patent · US Expired

Polyarylene copolymers and proton-conductive membrane

US6812290B2 · kind B2 · utility

4Cited by

3References

12Claims

0Family size

Assignee

JSR CORPORATION · JP

Inventors

Kohei Goto · Daito, JP
Yoshitaka Yamakawa · Tsuchiura, JP
Mayumi Kakuta · Tsukuba, JP
Igor Rozhanskii · Chuo, JP

Key dates

Filing date	Nov 26, 2002
Grant date	Nov 2, 2004
Priority date	—
Expiry date	Nov 26, 2022

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C45/46
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

A polyarylene copolymer which comprises (A) aromatic compound units having a main chain containing one or more electron-withdrawing groups therein and (B) aromatic compound units having a main chain containing no electron-withdrawing groups therein, and a proton-conductive membrane comprising the polyarylene copolymer having sulfonic acid groups.

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