http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-106905289-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D317-40 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D317-40 |
| filingDate | 2017-04-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2019-03-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2019-03-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-106905289-B |
| titleOfInvention | A kind of method of purification of vinylene carbonate |
| abstract | Yield is low, production efficiency is low, security risk is high when to overcome the problems, such as to produce vinylene carbonate in the prior art, and the present invention provides a kind of method of purification of vinylene carbonate, including carries out coarse-fine evaporate to vinylene carbonate crude product in coarse-fine evaporate in container；When liquid level be reduced to start to carry out coarse-fine evaporate when initial liquid level 1/10~1/5 when, being added has solvability to sticky vinylene carbonate ester polymer, and boiling point is higher than 15 DEG C of vinylene carbonate or more of organic solvent under normal pressure, is stirred, continues coarse-fine evaporate.The present invention dissolves the coke-like object generated in VC synthesis using specific organic solvent, both tar shaped polymer had been prevented to evaporate the problems such as coking carbonization bring is thermally conductive bad on container inner wall coarse-fine, the concentration of VC in liquid phase is diluted again, reduce the polymerization reaction of VC association in distillation process, while improving VC rectification yield, the risk for preventing VC polymerization exotherm bring equipment blunt temperature out of control makes entire production process more safety and economy. |
| priorityDate | 2017-04-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 25.