The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 12, 2009
Filed:
Jan. 28, 2008
Isamu Kaneko, Chiyoda-ku, JP;
Atsushi Watakabe, Chiyoda-ku, JP;
Jyunichi Tayanagi, Chiyoda-ku, JP;
Susumu Saito, Chiyoda-ku, JP;
Isamu Kaneko, Chiyoda-ku, JP;
Atsushi Watakabe, Chiyoda-ku, JP;
Jyunichi Tayanagi, Chiyoda-ku, JP;
Susumu Saito, Chiyoda-ku, JP;
Asahi Glass Company, Limited, Tokyo, JP;
Abstract
A compound containing two fluorosulfonyl groups which are groups convertible to sulfonic acid groups, an intermediate therefor, and methods for their production with high productivity, are provided. Also provided are a fluorosulfonyl group-containing polymer obtained by polymerizing such a compound, and a sulfonic acid group-containing polymer obtained from such a polymer. A method for producing a compound of the following formula (m0), such a compound, a fluorosulfonyl group-containing polymer obtained by polymerizing such a compound, and a sulfonic acid group-containing polymer obtained from such a polymer, provided that Ris a single bond or a Cbivalent perfluoro organic group, Ris a Cbivalent perfluoro organic group, and n is 0 or 1: