| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_2bc2da4bfebe79540ef2f4dac5deb0b4 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J2208-00752
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F210-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J2208-00769 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J8-1827
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J8-24
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F10-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J8-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J8-0015
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2-01 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F10-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J8-24
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J8-00 |
| filingDate |
2009-12-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_142cebc788de980d314fa66eb65f0625
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f6871fa88cfbda94261ef63b1cea8ed0
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f862bd326a7a40fd91fb102fbe6445be
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4b766d1823b7f75d2395a894bdccc634
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_462066aaedc11d875e6079565803d185 |
| publicationDate |
2011-10-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-2370201-A1 |
| titleOfInvention |
Process for feeding a catalyst in a polymerization reactor |
| abstract |
A process for introducing a catalyst powder based on a titanium compound supported on magnesium halide into a gas-phase olefin polymerization reactor, characterized in that it comprises: (a) storing the catalyst powder under an atmosphere of a liquid C 3 -C 12 alkane; (b) withdrawing from step (a) a measured amount of said catalyst powder by means of a rotary valve; (c) transferring said metered amount of catalyst powder to a catalyst activation section by a continuous pick-up flow of a liquid C 3 -C 12 alkane; (d) contacting the catalyst powder with a liquid phase comprising an organo-aluminum compound and optionally an external donor compound, at a temperature ranging from -20 °C to 60 °C; (e) introducing the activated catalyst powder in one or more gas-phase olefin polymerization reactors, where a gaseous mixture comprising at least one alpha-olefin is subjected to polymerization. |
| priorityDate |
2008-12-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |