EP 0010284 A3 19800514 - PROCESS FOR THE ELECTROLYSIS OF ALKALI CHLORIDES
Title (en)
PROCESS FOR THE ELECTROLYSIS OF ALKALI CHLORIDES
Publication
Application
Priority
DE 2845943 A 19781021
Abstract (en)
[origin: US4236980A] For the electrolysis of an aqueous alkali metal chloride solution in a membrane cell with a perfluorinated cation exchange membrane it is important that there is only a minimum amount of cations of polyvalent metals, such as calcium. Otherwise, deposits within the membrane will occur, among other effects. It has been found that the disturbances caused by the above-mentioned cations can be considerably reduced, if an aliphatic polybasic phosphonic acid or the alkali metal salt thereof is added to the alkali metal chloride solution.
IPC 1-7
IPC 8 full level
C25B 1/46 (2006.01)
CPC (source: EP US)
C25B 1/46 (2013.01 - EP US)
Citation (search report)
- [X] US 3954581 A 19760504 - CARLIN WILLIAM W
- US 3988223 A 19761026 - HIROZAWA STANLEY T
Designated contracting state (EPC)
BE DE FR GB IT NL
DOCDB simple family (publication)
EP 0010284 A2 19800430; EP 0010284 A3 19800514; DE 2845943 A1 19800430; JP S5558378 A 19800501; US 4236980 A 19801202
DOCDB simple family (application)
EP 79103962 A 19791015; DE 2845943 A 19781021; JP 13428979 A 19791019; US 8612479 A 19791018