http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-113999336-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F136-08 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-54 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-38 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F136-08 |
| filingDate | 2021-12-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-11-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-11-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-113999336-B |
| titleOfInvention | A star-shaped cis-1,4-polyisoprene with high Green intensity and its preparation method |
| abstract | The invention provides a preparation method of star-shaped cis-1,4-polyisoprene with high Green's intensity, comprising: A) in the presence of an inert gas, tridentate carbazole-based chelation of the structure of formula (I) The rare earth alkyl complex and co-catalyst are dissolved in an organic solvent to obtain a catalyst composition solution; B) the catalyst composition solution is used to catalyze the polymerization reaction of isoprene monomer, and then a coupling agent is added to carry out a coupling reaction, Instantly. The present invention uses tridentate carbazolyl chelated rare earth alkyl complexes represented by formula (I), organoboron reagents and alkylaluminum compounds as catalyst compositions to catalyze the polymerization of isoprene, and the inventors have discovered for the first time that in In the later stage of rare earth catalyzed isoprene polymerization, the isocyanate coupling agent is used to react with the active chain, and the star-shaped yield of the obtained polymer is above 90%, and the Green strength of the obtained isoprene is 0.45-1.8 MPa. |
| priorityDate | 2021-12-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 163.