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1.发明授权
公开(公告)号：US3887499A
公开(公告)日：1975-06-03
申请号：US39421273
申请日：1973-08-23
Applicant: IONICS
Inventor： HODGDON JR RUSSELL B
CPC classification number: C08J5/2287 , C08J2353/02 , C25B1/46
Abstract: A cation exchange membrane containing functional groups of both the sulfonic acid and carboxylic acid radicals which allows the membranes to maintain its conductivity throughout the entire pH range. This unique property gives this high capacity pH insensitive membrane particular value in electrolytic cells as hydraulic diaphragms to separate a basic solution from an acid solution as is encountered in caustic-chlorine cells or other type cells which electrolytically decompose neutral salt solutions such as sodium sulfate into their basic and acidic components of caustic soda and sodium acid sulfate. The capacity of this membrane is much higher than the presently known sulfonic acid salt types.
Abstract translation: 含有磺酸和羧酸基团官能团的阳离子交换膜，其允许膜在整个pH范围内保持其导电性。 这种独特的性质使电解池中的这种高容量的pH不敏感膜具有特殊的价值，作为液压隔膜，以将碱性溶液与酸溶液分离，如在碱 - 氯电池或电解分解中性盐溶液如硫酸钠的其它类型电池中遇到的， 它们的碱性和酸性成分为苛性钠和酸式硫酸钠。 该膜的容量远高于目前已知的磺酸盐类型。
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公开(公告)号：US3926864A
公开(公告)日：1975-12-16
申请号：US33357073
申请日：1973-02-20
Applicant: IONICS
Inventor： HODGDON JR RUSSELL B
CPC classification number: B01D67/0006 , B01D61/46 , B01D2321/00 , C08J5/2218 , H01M2/1653
Abstract: This invention is directed to electrodialysis equipment particularly to components comprising the ion exchange membranes. These membranes are fabricated with a polymeric macroporous surface as contrasted to the prior art microporous ''''gel'''' type membranes. The macroporous membrane surface or layer lessens the tendency for membranes especially the anion selective type to foul when employed in the electrodialysis of solutions containing fouling constituents. The macroporous membranes are obtaining by polymerizing the liquid monomers in the presence of a nonpolymerizable solvent pair or diluent comprised of both a ''''good'''' and a ''''poor'''' solvent, said solvent characterized with respect to the solvents ability to swell the cross-linked polymer that is formed.
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