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AssigneeGore Enterprise Holdings, Inc.
InventorsGuyu Xiao, Guomin Sun, Deyue Yan, Xinyuan Zhu, Charles W. Martin, Huey Wu, Karine Gulati, Carlos Alberto Cavalca
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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.
An ionomer comprising the reaction product of monomer A with monomer B and C, wherein the moles of monomers B plus C equal the moles of A, wherein R1-4 are independently H, linear or branched alkyl, aromatic, or halogen;
An ionomer comprising the reaction product of monomer A with monomer B and C in an azeotroping solvent mixed with an inert aprotic polar solvent containing at least 2 moles of an alkali metal base for each mole of monomer A, wherein the moles of monomers B plus C equal the moles of A, said reaction driven to completion by the azeotropic removal of water at a temperature above the azeotropic boiling point of the azeotroping solvent in the presence of water, wherein R1-4 are independently H, linear or branched alkyl, aromatic, or halogen;
An ionomer comprising the reaction product of monomer A with an ionomer-contributing monomer
A sulfonated Poly(phthalazinone ether ketone) s, comprising repeating units of the polymers shown below:
A method of preparing a sulfonated poly(phthalzinone ether ketone) comprising the steps of
A sulfonated poly(phthalazinone ether sulfone) comprising repeating units of the polymers shown below:
A method of preparing a sulfonated poly(phthalazinone ether sulfone), comprising the steps of
Dependencies are inferred from the claim text.