http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6177375-B1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b5aed7bcdd19c8d990e720c02b318f48 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F4-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F10-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F4-634 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-636 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-654 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F10-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-658 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-02 |
| filingDate | 1998-03-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2001-01-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_09f4849d6d3cbb2e64b5e93e814de78b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8304f02e3b838a83dbd067f5068ed691 |
| publicationDate | 2001-01-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-6177375-B1 |
| titleOfInvention | High activity olefin polymerization catalysts |
| abstract | A method for preparing a silica supported, alpha-olefin polymerization catalyst includes the steps of treating a silica support with an organosilane compound, contacting the silylated silica support with a transition metal compound to form an intermediate, then contacting the resulting intermediate with an alkylmagnesium alkoxide to form the catalyst. The transition metal compound is either a metal chloride or a metal chloroalkoxide, and the transition metal is selected from titanium, vanadium, and zirconium. The alkylmagnesium alkoxide may be selected from butylethylmagnesium butoxide, butylethylmagnesium 2-ethylhexoxide, butyloctylmagnesium ethoxide, or butylmagnesium propoxide. The process steps may be carried out in the presence of an aliphatic organic solvent, such as heptane, with a slurry of solids in the solvent being formed during the process steps. Catalysts produced by this process, during which the alkylmagnesium alkoxide contacts the reacting components after the transition metal compound is applied, have higher activities when compared with catalysts prepared by known processes under similar conditions. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2005014934-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7754647-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2008254976-A1 |
| priorityDate | 1998-03-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 102.