http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8293855-B2
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_e3b3f4f8df8306f743faf2d4a4af65e1 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_05a052a47fcb872e2206023cc294e13f http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d36fc109c10f180308c9716f76c1aac9 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_226c7844a92c5c6ca9a7e95d662846af |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2410-05 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F10-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F210-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-38 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F210-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F210-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F210-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F210-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-16 |
| filingDate | 2009-07-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2012-10-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3c10af16070379ad0ec2bfa86f30677b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9b15426a0337c4c5f1d3136e20d04231 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0ed38ee7f88e3c9d8107fe6dee134b8d |
| publicationDate | 2012-10-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-8293855-B2 |
| titleOfInvention | Method for transitioning between incompatible olefin polymerization catalyst systems |
| abstract | A method for transitioning from a first to a second catalyst system for the olefin polymerization reaction in one reactor, wherein the first catalyst system is incompatible with the second catalyst system, is described. The method comprises the steps of a) discontinuing a first olefin polymerization reaction performed in the presence of the first catalyst system; and b) performing a second olefin polymerization reaction in the presence of the second catalyst system comprising catalyst components (A) and (B) producing, respectively, a first and a second polyolefin fraction, wherein the M w of the first polyolefin fraction is less than the M w of the second polyolefin fraction and the initial activity of catalyst component (A) exceeds the initial activity of catalyst component (B). Thanks to this method, there is no need to empty the reactor after the first olefin polymerization reaction, and the transitioning time needed to attain the desired quality of the polyolefin obtained in the second olefin polymerization reaction is sufficiently short to permit a quick and reliable change of production. |
| priorityDate | 2008-07-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 444.