http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-20000052586-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_33c922e05f6133b7d72dbb849d77487d |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F4-65925 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-584 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F110-06 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F10-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F6-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2-00 |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-6592 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F6-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-645 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-659 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F10-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F6-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-34 |
| filingDate | 1999-12-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_94450b6feaa0d6b3958c6491295716da http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_78c02a167f515d8aa2af2ac8913aba13 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_69c3d833fbe70fbc4f82ff957c37837d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6a73c1c059bb56de91a1e6ed1d49a1a8 |
| publicationDate | 2000-08-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | KR-20000052586-A |
| titleOfInvention | Method for olefin polymerization with recycling cocatalyst |
| abstract | The present invention relates to a method for preparing a catalyst and an olefin polymerization method for reusing a promoter, and in particular, an excess amount used to activate a single-site catalyst pre-catalyst when polymerizing an olefin using a single-site catalyst. The present invention relates to a method for polymerizing olefins by circulating and reusing a promoter such as expensive aluminoxanes while dramatically reducing the amount of promoter used.n n n The present invention provides for this purpose: a) iii) a supported single activity catalyst precursor (pre-catalyst); And ii) contacting the organic solvent in which the promoter is dissolved to prepare an activated single-site catalyst. b) separating the activated single-site catalyst and the organic solvent in which the promoter is dissolved in step a); c) polymerizing at least one olefinic monomer under the separated single site catalyst of step b); And d) circulating the organic solvent in which the separated promoter of step b) is dissolved and contacting the supported single active site catalyst pre-catalyst of step a) for reuse. An olefin polymerization method is provided.n n n When the single active site catalyst activated by the method of the present invention is prepared and separated and used in the polymerization of olefins, it is conventionally used in excess to activate the single active site catalyst precursor (pre-catalyst) in the polymerization of olefins. Not only can the co-catalyst such as aluminoxane be recovered and reused, but the actual amount of cocatalyst used to obtain optimum activity can be minimized, and the amount of cocatalyst reacted with impurities or lost in process is greatly increased. It is possible to reduce and freely mix with commonly used inexpensive alkyl aluminum compounds, to easily switch to other catalyst / catalyst systems in the process, and to effectively prevent fouling of the reactor.n n n In addition, the catalyst prepared by the method of the present invention can be used in both slurry and gas phase processes regardless of the type of polymerization medium, it is also possible to control the catalyst particle size through the control of the catalyst activation and prepolymerization conditions. |
| priorityDate | 1999-01-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 138.