http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109776707-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F136-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-52 |
| filingDate | 2017-11-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-05-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-05-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-109776707-B |
| titleOfInvention | Method for producing rare earth isoprene rubber |
| abstract | The invention relates to the field of polymer production, and discloses a method for producing rare earth isoprene rubber, which comprises the following steps: under the condition of solution polymerization, introducing an isoprene monomer, a rare earth catalyst and a solvent into a polymerization reaction unit for polymerization reaction, circulating part of rare earth isoprene rubber liquid solution obtained at an outlet of the polymerization reaction unit back to an inlet of the polymerization reaction unit, introducing the rest of rare earth isoprene rubber liquid solution serving as a crude product into a subsequent processing unit, wherein the weight of the rare earth isoprene rubber liquid solution circulated back to the inlet of the polymerization reaction unit is 5-25 wt% based on the total weight of all the rare earth isoprene rubber liquid solutions obtained at the outlet of the polymerization reaction unit. The method can reduce the addition amount of the solvent in the polymerization reaction unit, further reduce the steam consumption for recovering the solvent and achieve better energy-saving effect. |
| priorityDate | 2017-11-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 39.