Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Ion-exchange polymer or process of preparing
Patent
1976-08-19
1978-09-26
Schofer, Joseph L.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Ion-exchange polymer or process of preparing
204180P, 264308, 427385B, 427 2, 210490, 210500M, 428421, 428520, 428522, C08J 522, C08J 524, C25D 2122
Patent
active
041168895
ABSTRACT:
Stable bipolar membranes of high permselectivity and low potential drop are prepared using either an anion or cation preformed first layer upon which a second layer or coating of an ion exchange resin of the opposite charge carried in a matrix polymer is applied. The second layer may be suitably applied such as by casting as a slurry of the ion exchange resin in a solution or by laminating a layer comprising a dispersion of the resin in a solid or fused polymer. Optionally, the surface of the first layer may be treated to increase the resin concentration and/or bonding at the interface, such as by sanding, etching, etc.
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Frilette, V. J., Jour. of Phys. Chem., vol. 60, 1956, pp. 435-439.
Chlanda Frederick P.
Lee Lester T. C.
Liu Kang-Jen
Allied Chemical Corporation
Hoffman Thomas D.
Plantamura Arthur J.
Polin Ernest A.
Schofer Joseph L.
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