发明名称 |
CELULA DE ELECTROLIZA A CLORURILOR ALCALINE |
摘要 |
<p>1485708 Cation exchange membranes DIAMOND SHAMROCK CORP 15 Oct 1975 [16 Oct 1974] 42310/75 Heading C3P [Also in Divisions B5 and C7] Cation exchange membranes for use in an electrolytic cell are obtained by surface treatment of a membrane comprising a fluorine-containing polymer having pendant sulphonyl groups with an ethylene diamine to convert the sulphonyl groups to a depth of 5-75 microns to the form on one side only, the remaining sulphonyl groups being converted to -SO 3 R where R is H, Na or K and R<SP>1</SP> is R or -SO 2 -. The membrane is preferably formed from a copolymer of tetrafluoroethylene and CF 2 = CFYfSO 2 F where Yf is a bivalent C 2 -C 8 perfluorinated radical. After treatment on one side with ethylene diamine, the membrane is further treated with alkali metal hydroxide to hydrolyse other -SO 2 F groups to -SO 3 R. The membrane is used in the electrolysis of brine with the treated surface facing the cathode.</p> |
申请公布号 |
RO69556(A) |
申请公布日期 |
1980.08.15 |
申请号 |
RO19750083564 |
申请日期 |
1975.10.10 |
申请人 |
DIAMOND SHAMROCK CO,US |
发明人 |
BABONSKY,ANDREW D.,US;HORA,CHARLES J.,US |
分类号 |
C25B13/08;C08J5/22;(IPC1-7):25B13/08 |
主分类号 |
C25B13/08 |
代理机构 |
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代理人 |
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