http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1402920-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_4629bd6f07bc58aa772a1f6fe6ba784b |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2327-12 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C25B1-46 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J5-2237 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C25B9-19 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C25B9-19 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J5-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C25B13-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C25B1-46 |
| filingDate | 1972-10-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1975-08-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1402920-A |
| titleOfInvention | Electrolytic production of high purity alkali metal hydroxide |
| abstract | 1402920 Electrolytic production of alkali metal hydroxide DIAMOND SHAMROCK CORP 20 Oct 1972 [21 Oct 1971] 48439/72 Heading C7B Alkali metal hydroxide is produced by electrolysis of alkali metal halide in a cell divided by a membrane of fluorinated co-polymer formed by groups having the formulae: and (2) -CXX<SP>1</SP>-CF 2 - wherein:- R represents the group in which R<SP>1</SP> is a fluorine atom or a perfluoralkyl group; Y is a fluorine atom or a trifluoromethyl gp; m = 1 - 3; n = 0 or 1; X = fluorine, chlorine or hydrogen or a trifluoromethyl group; X<SP>1</SP> = X or CF 3 (CF 2 ) z wherein z = 0-5, and the units of formula (1) are present from 3-20 mole per cent. The anode used may comprise a substrate coated with a solid solution of a platinum group metal oxide and a valve metal oxide (e.g. Ti or Ta substrate with TiO 2 /RuO 2 coating) optionally with other metal oxides present; a valve metal substrate with a platinum group metal alloy coating (e.g. Ti or Ta substrate with Pt/Ir alloy coating); or a substrate having a coating of tin and antimony oxides in which platinum group metal or oxide is dispersed. The cathode may be of steel, Ni, Co, Ti, Pb or Pt; e.g. of expanded metal mesh. As shown the membrane 12 is positioned between two halfcells 15a (containing anode 13 and provided with inlet 17 for alkali metal halide solution, and outlets 16 and 19 for exhausted electrolyte and halogen gas resp .) and 15c (containing cathode 14 and provided with outlets 18 and 20 for alkali metal hydroxide and hydrogen resp.). |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5425863-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4992148-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5308455-A |
| priorityDate | 1971-10-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 31.