http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S5654212-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_696ca0ae93d5cf5a686273601361781f |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B21-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01C1-24 |
| filingDate | 1979-10-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1bbd9e2cdff5eca7300376f4c17fa098 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_12fc80b1b894060f44545088786c3cfe |
| publicationDate | 1981-05-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S5654212-A |
| titleOfInvention | Preparation of hydrazine hydrate |
| abstract | PURPOSE: To obtain the hydrazine hydrate easily by maintaining the ammonia concn. to a predetermined value and carrying out the distillation at a predetermined temp. in preparing hydrazine hydrate. n CONSTITUTION: In a method for preparing the hydrazine hydrate by reacting hydrazine sulphate and ammonia in the presence of water, the ammonia concn. in a reaction medium is maintained at 25wt% or more always. Thereby, the solubility of ammonium sulphate is extremely lowered and the separation thereof becomes easily. As the hydrazine sulphate, for example, monohydrazine sulphate is used and ammonia is a liquid ammonia or the like. The amount of water is pref. about 20mol or less against one mole of a hydrazine component. After precipitated and crystallized ammonium sulphate is removed, the filtrate is distilled at 180°C or less, pref., at 75W150°C. Moreover, a washing liquid of ammonium sulphate and a kettle residue after the hydrazine hydrate is distilled are recirculated to a reaction medium and reused. n COPYRIGHT: (C)1981,JPO&Japio |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2008133179-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H02252517-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S60193623-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H0433615-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H0433614-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S60196319-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H0529536-B2 |
| priorityDate | 1979-10-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 31.