http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-03033121-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_072074bf267fa378e2bab7785a85536c http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_4741c75b6b894b1a93fb26808050be7a http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_10642c8fa6d2d063b67ca41c0080e6df http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8a2402856529d8b7586669f0352574b1 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C209-84 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D61-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C25B3-00 |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C211-63 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C209-84 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F1-469 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-32 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D65-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C25B3-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D61-46 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D61-44 |
| filingDate | 2002-10-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a7d6903fe38c9e74abc68d4b5dc8f0d2 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cc4ef58dbbd48960710296e0912d4466 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7d9b04cd09f8336c714ed20aedaa0acd |
| publicationDate | 2003-04-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | WO-03033121-A1 |
| titleOfInvention | Process for improving the purity of quaternary ammonium hydroxides by electrolysis in a two-compartment cell |
| abstract | The present invention relates to a process for purifying a recycle base solution waste stream of a composition comprising a quaternary ammonium hydroxide comprising the steps of (a) providing an electrolysis cell which comprises an anolyte compartment containing an anode, a catholyte compartment containing a cathode, and a cation-selective membrane separating the anolyte and catholyte compartments, (b) charging the recycle base solution waste stream comprising the quaternary ammonium hydroxide to be purified to the anolyte compartment and charging water, optionally containing a quaternary ammonium hydroxide, to the catholyte compartment, (c) passing a current through the electrolysis cell to produce a purified aqueous quaternary ammonium hydroxide solution in the catholyte compartment, (d) recovering the purified aqueous quaternary ammonium hydroxide solution from the catholyte compartment, (e) washing the anolyte compartment with a suitable solvent, and (f) repeating steps (b)-(e). The process is particularly suitable for improving the purity of an aqueous solution comprising tetramethyl ammonium hydroxide, which was used in the production of 4-aminodiphenylamine for a number of reaction cycles. |
| priorityDate | 2001-10-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 108.