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:
Jul. 29, 2008
Filed:
Jul. 05, 2002
Guyu Xiao, Shanghai, CN;
Guomin Sun, Shanghai, CN;
Deyue Yan, Shanghai, CN;
Xinyuan Zhu, Shanghai, CN;
Charles W. Martin, Avondale, PA (US);
Huey Wu, Newark, DE (US);
Karine Gulati, Mission Viejo, CA (US);
Carlos Alberto Cavalca, Newark, DE (US);
Guyu Xiao, Shanghai, CN;
Guomin Sun, Shanghai, CN;
Deyue Yan, Shanghai, CN;
Xinyuan Zhu, Shanghai, CN;
Charles W. Martin, Avondale, PA (US);
Huey Wu, Newark, DE (US);
Karine Gulati, Mission Viejo, CA (US);
Carlos Alberto Cavalca, Newark, DE (US);
Gore Enterprise Holdings, Inc., Newark, DE (US);
Abstract
The reaction product of a monomer comprising phthalazinone and a phenol group, and at least one sulfonated aromatic compound. The monomer comprising phthalazinone and a phenol group is used in a reaction with the sulfonated aromatic compound to produce ionomers with surprising and highly desirable properties. In one embodiment, the inventive ionomer is a sulfonated poly(phthalazinone ether ketone), hereinafter referred to as sPPEK. In another embodiment, the inventive ionomer is a sulfonated poly(phthalazinone either sulfone), herein after referred to as SPPES. In another embodiment, the inventive ionomer is other sulfonated aromatic polymeric compounds. The invention further includes the formation of these polymers into membranes and their use for polymer electrolyte membrane fuel cells (PEMFC), and in particular for direct methanol fuel cells (DMFC). The inventive polymers may be manufactured in membrane form, and can be dissolved into solution and impregnated into porous substrates to form composite polymer electrolyte membranes with improved properties.