| Predicate |
Object |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F4-24
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F10-02 |
| classificationIPCInventive |
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/C08F4-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-24 |
| filingDate |
2001-05-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2824dbd7c98d6cdb4b778480a7111dd2
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b9946deb53ffc071bd070afb663e1cd1
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c5373b19cfd8343f170af3ac8ef2be40
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_462ffaef2a1be99bea341d4c535770c5
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_18c453bff52783b63bf957477946ad62
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_fb510023b7d6582382959124e8ec79e9 |
| publicationDate |
2004-02-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-2004038810-A1 |
| 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, n 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 n 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 wherein 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-2008119624-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2007271073-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7517938-B2 |
| priorityDate |
2000-05-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |