Chemistry: electrical current producing apparatus – product – and – With pressure equalizing means for liquid immersion operation
Reexamination Certificate
2006-05-16
2006-05-16
Acquah, Samuel A. (Department: 1711)
Chemistry: electrical current producing apparatus, product, and
With pressure equalizing means for liquid immersion operation
C528S335000, C528S337000, C528S341000, C528S344000, C528S347000, C528S350000, C528S373000, C528S377000, C528S390000, C528S391000, C528S423000, C429S309000, C429S310000, C429S324000
Reexamination Certificate
active
07045241
ABSTRACT:
A monomer to produce polybenzimidazole is dissolved in polyphosphoric acid. For example, polysulfated phenylene sulfonic acid (acidic group-possessing polymer) is further dissolved in this solution. In this procedure, the acidic group-possessing polymer and the monomer are adsorbed to one another in accordance with the acid-base interaction. When the monomer is polymerized, for example, by means of dehydration polymerization in this state, then polybenzimidazole is synthesized, and the polybenzimidazole and the acidic group-possessing polymer are compatibilized with each other to produce a compatibilized polymer. When the compatibilized polymer is deposited as a solid, and the solid is separated from polyphosphoric acid, then the compatibilized polymer is obtained. A proton conductive solid polymer electrolyte as a final product is manufactured by forming the compatibilized polymer to have a predetermined shape.
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Akita Hiroshi
Komiya Teruaki
Acquah Samuel A.
Honda Giken Kogyo Kabushiki Kaisha
Lahive & Cockfield LLP
Laurentano, Esq. Anthony A.
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