http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0531270-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_34fbeb1e614ea098731393cc639cd372 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F10-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F4-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-60 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F10-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-64 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-649 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-627 |
| filingDate | 1992-08-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d64f4409b323dc47c8f6bc5ed4c86128 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c243ebabcce13f0e2c441d98cf17d751 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c7fa7a9f3751731ab234f04fd3c3254b |
| publicationDate | 1993-03-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-0531270-A1 |
| titleOfInvention | Catalyst system for improved polymerization yield |
| abstract | The invention is for a catalyst system, a process for making the catalyst system and a process for olefin polymerization using the catalyst system. The catalyst system comprises alcohol or diethylaluminum alkoxide added to a conventional Ziegler-Natta catalyst component, an aluminum alkyl co-catalyst and, optionally, an electron donor. The aluminum alkyl is preferably triethyl aluminum n Addition of alcohol in a range of from 0.03 to 0.25 results in a increase in catalyst efficiency and polymerization yield. Normal or linear chain alcohols, such as methanol and ethanol, seem to have a positive effect whereas branched alcohols appears to have no positive effect. n The mole-to-mole ratio of diethylaluminum alkoxide to aluminum alkyl ranges from 0.05 to 0.2. This invention is effective for the aluminum/transition metal ratio for the polymerization of olefins ranges from about 100 to about 500. Polymerization yield increases of greater than 10% are realized. The diethylaluminum alkoxide is preferably diethylaluminum ethoxide. |
| priorityDate | 1991-09-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 62.