http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2003192705-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d546bbb248fb7aca02f0b8024f19e89e |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-00 |
| filingDate | 2001-12-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_960cb811d26708610303cf7b884298cc http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2e03e7e505e217b0ed0de96bdf510331 |
| publicationDate | 2003-07-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-2003192705-A |
| titleOfInvention | Method for producing olefin polymer |
| abstract | (57) An olefin polymer is produced by polymerizing an olefin using a metallocene catalyst, and the molecular weight of the produced olefin polymer is controlled by the hydrogen concentration in the polymerization reaction system. (1) When changing the molecular weight of the polymer from a lower one to a higher one, the hydrogen concentration in the polymerization reaction system is reduced by increasing the amount of gas purge to the outside of the polymerization reaction system; A method for producing an olefin polymer, comprising, when changing the molecular weight of a polymer from a higher one to a lower one, reducing the amount of gas purge to the outside of the polymerization reaction system to increase the hydrogen concentration in the polymerization reaction system. According to the present invention, when olefin is polymerized in the presence of a metallocene catalyst, the hydrogen concentration in the system can be quickly controlled, and an olefin polymer having a desired molecular weight can be easily produced. Can be. The effect is particularly great when manufacturing a group of products of various molecular weights by continuous operation. |
| priorityDate | 2001-12-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 56.