Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Ion-exchange polymer or process of preparing
Reexamination Certificate
2011-08-30
2011-08-30
Wu, David (Department: 1762)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Ion-exchange polymer or process of preparing
C252S062200, C427S115000, C525S276000, C525S282000, C525S291000, C525S404000, C525S451000, C525S422000, C528S322000, C528S367000, C548S521000
Reexamination Certificate
active
08008360
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.
REFERENCES:
patent: 4983690 (1991-01-01), Cameron et al.
patent: 2008/0075999 (2008-03-01), Izuhara et al.
patent: 2008/0157021 (2008-07-01), Wang et al.
patent: 2008/0221325 (2008-09-01), Pan et al.
patent: 101219349 (2008-07-01), None
Pan, J.P.; Shiau, G.Y.; Lin, S.S.; Chen, K.M.; Journal of Applied Polymer Science, 1992, vol. 45, p. 103-109.
Chinese Office Action from corresponding Chinese Application No. 200810185731.2, Jan. 25, 2011.
Chang Chung-Liang
Hsu Ya-Tin
Lin Yueh-Wei
Pan Jing-Pin
Wang Tsung-Hsiung
Industrial Technology Research Institute
Jones Robert
Lowe Hauptman & Ham & Berner, LLP
Wu David
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