http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S63295408-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_696ca0ae93d5cf5a686273601361781f |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B21-16 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B21-16 |
| filingDate | 1987-05-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_01d0fc0e5e05bc51fa7dc3d199b54a77 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_20088ecc576707f9b8398974a67f9d67 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5846b16f47adaf7c8f2e20b3260ad27b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2a1f42395fa740ee5e08096aab1caea7 |
| publicationDate | 1988-12-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S63295408-A |
| titleOfInvention | Method for purifying aqueous hydrazine hydrate solution |
| abstract | PURPOSE: To obtain the titled high quality soln. having a remarkably lowered concn. of TOC (total org. carbon) by distilling an aq. hydrazine hydrate soln. in the presence of a salt of an inorg. acid or the like to distill off TOC and by distilling the resulting concd. soln. again. n CONSTITUTION: NH 3 is oxidized with an oxidizing agent such as H 2 O 2 in the presence of ketone and the resulting ketazine is hydrolyzed and purified by distillation to obtain an aq. hydrazine hydrate soln. 1 having about 500W1,500ppm TOC (total org. carbon) content. The soln 1 is fed to the lower part of a distilling column A, a soln. 2 of hydrochloride, sulfate, phosphate, carbonate or the like of hydrazine such as neutral hydrazine sulfate is fed to the upper part of th column A, thus to concentrate the soln. 1 by distillation. Water 3 contg. TOC is discharged from the top of the column A and the concd. soln. is drawn out of the bottom of the column A, fed to a distilling column B and distilled again. A purified hydrazine hydrate soln. 4 is recovered from the top of the column B. n COPYRIGHT: (C)1988,JPO&Japio |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102826520-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2014057735-A1 |
| priorityDate | 1987-05-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 36.