http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-103073449-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_3e2ed7d5243198fa6a65c033bbed9bbf |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C239-20 |
| filingDate | 2013-01-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2015-01-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3f04b5f964e0670a5f594af7bf6fdb64 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3359a2b4a9c1ed7886770544777dd33b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ece491c4f5f2e2f3a6d8fe3a12be8d26 |
| publicationDate | 2015-01-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-103073449-B |
| titleOfInvention | Method for synthesizing N, O-dimethylhydroxylamine hydrochloride |
| abstract | The invention discloses a method for synthesizing N, O-dimethylhydroxylamine hydrochloride, which comprises the following steps: adding acetate and hydroxylamine salt into a reaction vessel at a room temperature, warming up to 20-50 DEG C, adding alkali, then carrying out heat preservation at a temperature of 20-50 DEG C, agitating and reacting for 1to 5 hours; controlling the temperature to be 30 to 50 DEG C, adding a methylating agent, carrying out heat preservation at a temperature of 30-50 DEG C after addition, agitating and reacting for 1-5 hours; then adding acid, heating to 50-100 DEG C and hydrolyzing for 1-4 hours; and finally adding alkali into a hydrolysate for neutralization, controlling the distillation time to be 2-8 hours at a normal pressure, adding hydrochloric acid salt in a fraction of the hydrolysate, concentrating under reduced pressure, cooling, filtering, washing and vacuum-drying to obtain the N, O-dimethylhydroxylamine hydrochloride. The method for synthesizing the N, O-dimethylhydroxylamine hydrochloride is not applicable to poisonous and harmful raw materials, has the advantages of mild reaction condition, more simplicity in operation, higher yield, good product quality, more safety, less wastewater discharge and more environmental friendliness, and is suitable for industrial production. |
| priorityDate | 2013-01-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 47.