http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-105801335-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C17-23 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C17-395 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C17-23 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C21-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C17-395 |
| filingDate | 2016-04-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2019-06-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2019-06-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-105801335-B |
| titleOfInvention | A kind of 1,2 2 fluoro- 1,2 dichloroethylene synthesis technologies |
| abstract | The invention discloses one kind 1,2 two fluoro- 1, and 2 dichloroethylene synthesis technologies include the following steps: dechlorination reaction: progress dechlorination reaction generation dichlorodifluoroethylene under the conditions of use difluoro tetrachloroethanes (R112) be raw material and zinc powder existing for the ethyl alcohol；Distillation operation: by distillate product 0 DEG C -60 DEG C at a temperature of be slowly added dropwise sodium ethoxide carry out reactive distillation operation, fluoro- 2.2 dichloroethylene of impurity 1.1 2 react in the presence of a catalyst with alcohol generation ether, then carry out distillation operation, impurity ether is removed, receive out finished product 1,2 two fluoro- 1,2 dichloroethylene.The present invention uses batch technology, will distillate product and in metered reaction kettle, is opened stirring, and catalyst is slowly added dropwise, and carries out reactive distillation operation, and fractionation obtains product.Finished product purity >=99.5%, yield >=95%. |
| priorityDate | 2016-04-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 45.