http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2009298897-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/C08F297-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-654 |
| filingDate | 2008-06-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ec42fc978edfdcf17f8bc7f7a129aea1 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_eb69e82c69dc7f7e12a8ceae51267ffd |
| publicationDate | 2009-12-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-2009298897-A |
| titleOfInvention | Propylene-based block copolymer production method |
| abstract | PROBLEM TO BE SOLVED: To provide a polymerization method of a propylene-based block copolymer in which short path particles are selectively inactivated to achieve a balance between catalytic activity and gel suppression. The present invention uses n (n ≧ 4) connected polymerization tanks in the presence of (A) a solid catalyst component and (B) a Ziegler-Natta catalyst formed from an organoaluminum compound. In the continuous production method of a propylene-based block copolymer, a homopolymer component of propylene is produced in the 1st to (n-1) th polymerization tank, and a copolymer component composed of propylene and ethylene is produced in the nth polymerization tank. In the (n-1) -th polymerization tank and the n-th polymerization tank, polymerization is performed under the condition in which alcohol is present. [Selection figure] None |
| priorityDate | 2008-06-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 57.