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:
Aug. 30, 2011
Filed:
Apr. 03, 2009
Chung-liang Chang, Hsinchu, TW;
Jing-pin Pan, Hsinchu Hsien, TW;
Tsung-hsiung Wang, Dali, TW;
Yueh-wei Lin, Hsinchu, TW;
Ya-tin Hsu, Taipei, TW;
Chung-Liang Chang, Hsinchu, TW;
Jing-Pin Pan, Hsinchu Hsien, TW;
Tsung-Hsiung Wang, Dali, TW;
Yueh-Wei Lin, Hsinchu, TW;
Ya-Tin Hsu, Taipei, TW;
Abstract
A proton exchange membrane and method for formation the same is disclosed. When forming the proton exchange membrane, first, a bismaleimide and barbituric acid are copolymerized to form a hyper-branched polymer. Next, the solvent of the sulfonated tetrafluorethylene copolymer (Nafion) aqueous solution is replaced with dimethyl acetamide (DMAc). 10 to 15 parts by weight of the hyper-branched polymer is added to 90 to 85 parts by weight of the Nafion in the DMAc solution, stood and heated to 50° C. for inter-penetration of the hyper-branched polymer and the Nafion. The heated solution is coated on a substrate, baked, and pre-treated to remove residue solvent to complete formation of the proton exchange membrane.