| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_e3b3f4f8df8306f743faf2d4a4af65e1 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F10-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F4-24 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J13-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J35-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B33-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F10-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F10-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-24
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J27-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J21-08 |
| filingDate |
2001-05-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2008-03-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0f76bb1c77144351ebe2c41ed58ff346
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e70442b4a70a7a2ccf0fdddff7e29d87
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6849b476ee1a6202be6d823ba5a93899
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cece4af741cf21ab96e1b8b8a7b57d12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b427d00755c38b60ae213c46fd5e5e14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a220e9a11863dcfd6877282d5b5a00a6 |
| publicationDate |
2008-03-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-RE40140-E |
| titleOfInvention |
Polymerization catalyst used for producing polyolefins that have excellent combined properties |
| abstract |
The invention relates to a process for preparing a catalyst for the polymerization of olefins, which comprises:n a) preparation of a finely divided silica xerogel, b) loading of the xerogel with chromium from a solution of chromium trioxide or a chromium compound which is converted into chromium trioxide under the conditions of step c), and c) activation of the resulting product at from 400 to 1100° C. in a water-free gas stream comprising oxygen in a concentration of above 10% by volume,n nwherein a fluoride doping with a fluorinating agent is carried out in step b) or in step c). Furthermore, the invention relates to a catalyst for the polymerization of olefins which is obtainable by the process of the invention and to a process for the polymerization of olefins in which an olefin or an olefin mixture is polymerized in the presence of a catalyst according to the invention. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7553916-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2007037936-A1 |
| priorityDate |
2000-05-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |