http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2022014443-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_2ebdfc88803aa0e0bb776ddb9db35fda |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-656 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-655 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F297-08 |
| filingDate | 2021-07-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9138aa231d7a90d85ace92863692cfea http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_174ad2dd0b64cf0d46ffd80dd72e8f87 |
| publicationDate | 2022-01-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-2022014443-A |
| titleOfInvention | Method for producing propylene-based block copolymer |
| abstract | PROBLEM TO BE SOLVED: To produce a propylene-based block copolymer containing a propylene-ethylene-based copolymer with high catalytic efficiency while reducing gel without increasing the number of reactors more than necessary in a multi-stage continuous polymerization method. Provide a way to do it. SOLUTION: In a first step, a crystalline propylene-based polymer is polymerized in the presence of a specific solid catalyst component and an organic aluminum compound using one or more gas phase polymerization reactors, and in the subsequent second step. Specified in the method for producing a propylene-based block copolymer that polymerizes an amorphous propylene-ethylene-based polymer in the presence of the crystalline propylene-based polymer using one or more vapor-phase polymerization reactors. A method for producing a propylene-based block polymer, which comprises supplying a mixing reaction inhibitor composed of a mixture of a polyoxyalkylene-based compound and a specific alcohol compound under specific conditions. [Selection diagram] None |
| priorityDate | 2020-07-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 144.