http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2009108224-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_2ebdfc88803aa0e0bb776ddb9db35fda |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F10-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-6592 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F6-08 |
| filingDate | 2007-10-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7d1e7b3187b43583836ead124430d59b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9138aa231d7a90d85ace92863692cfea |
| publicationDate | 2009-05-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-2009108224-A |
| titleOfInvention | Catalyst switching method in catalyst tank of polyolefin production facility |
| abstract | A catalyst capable of quickly eliminating the effects of residual catalyst such as the generation of fish eyes when switching from a transition metal catalyst having a high molecular weight polyolefin forming ability to a transition metal catalyst having a low molecular weight polyolefin producing ability A switching method and a method for producing a polyolefin using the same are provided. The present invention provides a method for switching a catalyst in a catalyst tank of a polyolefin production facility, wherein the following steps (1) to (7) are sequentially performed. (1) Step of discharging transition metal catalyst [I] having polyolefin forming ability (2) Step of washing with saturated hydrocarbon solvent (3) Step of washing with saturated hydrocarbon solvent containing electron donating compound (4) A step of washing with a saturated hydrocarbon solvent containing a compound capable of reacting with an electron-donating compound (5) A step of washing with a saturated hydrocarbon solvent again (6) A step of drying with an inert gas (7) A polyolefin forming ability Step of filling transition metal catalyst [II] [Selection] None |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114621369-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114621370-A |
| priorityDate | 2007-10-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 145.