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:
Jun. 02, 2009
Filed:
May. 26, 2006
Tyler B. Norsten, Gatineau, CA;
Jianfu Ding, Ottawa, CA;
Michael D. Guiver, Ottawa, CA;
Yinghua Qi, Gatineau, CA;
Tyler B. Norsten, Gatineau, CA;
Jianfu Ding, Ottawa, CA;
Michael D. Guiver, Ottawa, CA;
Yinghua Qi, Gatineau, CA;
National Research Council of Canada, Ottawa, Ontario, CA;
Abstract
Fluorinated comb co-polymers have a main chain including a semi-rigid hydrophobic fluorinated poly(ether) backbone and comb segments in the form of flexible and monodisperse side chains that are more hydrophilic than the backbone. The side chains may be hydrophilic polymeric chains obtained from 'living-type' polymerization, for example polymethacrylates, polyethylene oxides, polystyrenes. Hydrophilic functionality, for example, ionic groups may be selectively introduced onto the side chain post polymerization. The side chain may be sulfonated α-methyl polystyrene. Such polymers are useful in proton exchange membranes.