| Predicate |
Object |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J37-0072
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J21-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F10-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J37-036 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F10-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J21-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J37-03
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B33-193
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B33-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-24
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J37-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J32-00 |
| filingDate |
2002-02-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f7b7aaa97aed19a075f2c33ea1525515
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c5373b19cfd8343f170af3ac8ef2be40
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2824dbd7c98d6cdb4b778480a7111dd2
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_42fdb20ab05a9e03b377c1a0c01c4e83 |
| publicationDate |
2002-09-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-2002132941-A1 |
| titleOfInvention |
Optimized method for the production of catalyst supports based on silica gel and chromium catalysts supported on silica gel |
| abstract |
The invention relates to a catalyst support and to a method for the production of the catalyst support comprising the following steps: n a) production of a silicic acid hydrogel having a solids content of from 10 to 25% by weight (calculated as SiO 2 ) whose particles are substantially spherical, n b) extraction of the hydrogel particles with an alcohol until at least 60% of the water present in the hydrogel has been removed, n c) drying of the resultant hydrogel until the residual alcohol content is less than 10% by weight (xerogel formation) at temperatures of ≧160° C. at atmospheric pressure using an inert entraining gas, n d) setting of the desired particle size of the resultant xerogel, n in which the hydrogel particles have a particle size of ≧8 mm before the extraction, and to a catalyst and to a method for the production of the catalyst by loading the catalyst support with a chromium compound. n The invention also relates to a method for the production of polyolefins using the catalyst. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9663376-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8039564-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2010256314-A1 |
| priorityDate |
1999-09-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |