http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110272515-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2420-04 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F210-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F210-14 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-6592 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F210-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F210-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-06 |
| filingDate | 2018-03-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-10-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-10-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-110272515-B |
| titleOfInvention | Process for the preparation of ethylene copolymers |
| abstract | The invention relates to the field of olefin coordination polymerization, and discloses a preparation method of an ethylene copolymer, which comprises the following steps: contacting ethylene, a comonomer with a catalyst comprising a post-metallocene dialkynylphenol-based procatalyst of the formula (I) wherein R is R, a boride and an alkylaluminum compound under olefin polymerization conditions in the presence of an inert solvent 1 Is hydrogen, C 1 ‑C 20 A linear or branched alkyl group of (a) or a trimethylsilyl group; r 2 Is hydrogen, C 1 ‑C 20 Straight or branched alkyl or phenyl; r 3 、R 4 、R 5 、R 6 And R 7 Is hydrogen or C 1 ‑C 20 Linear or branched alkyl of (a); m is one of titanium, zirconium and hafnium; x 1 And X 2 The same or different, each independently is halogen. The ethylene copolymer prepared by the method has higher catalytic efficiency, the comonomer introduction ratio is higher, and the preparation process of the used metallocene catalyst precursor is simple. |
| priorityDate | 2018-03-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 80.