http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-20000023614-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d2318d690f130f442092850ffa425673 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F110-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F4-6592 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F4-65912 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F4-64 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F10-00 |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-6592 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-659 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F10-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F10-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F110-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-64 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F297-06 |
| filingDate | 1999-01-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a2965c0ecc39ce1d882d982d380f166c |
| publicationDate | 2000-04-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | KR-20000023614-A |
| titleOfInvention | Syndiotactic/atactic block polyolefins, catalysts and processes for producing the same |
| abstract | The present invention relates to metallocene catalysts useful for the preparation of syndiotactic / atactic block polyolefins of the general formula (1).n n n Formula 1n n n R "(C 4 R ' m C 5 C 4 R' n ) XMeQn n n In the above formula,n n n X is a hetero atom ligand with one or two lone pairs of electrons, is selected from elements of group VA or VIA, can be substituted or unsubstituted,n n n (C 4 R ' m C 5 C 4 R' n ) is a fluorenyl or symmetrically substituted fluorenyl or cyclopentadienyl ring,n n n R 'is hydrogen or a C 1 to C 20 hydrocarbyl group, halogen, alkoxy group and alkoxy alkyl group or alkylamino group or alkylsilyl group, which may be the same or different, respectively,n n n m and n are each 0 to 4, provided that symmetry of both left and right sides is maintained,n n n R ″ is a structural crosslink between X and (C 4 R ′ m C 5 C 4 R ′ n ) ring to provide steric stiffness,n n n Q is a C 1 to C 20 hydrocarbyl group or halogen,n n n Me is a Group IIIB, IVB, VB or VIB metal of the Periodic Table of Elements and may exist in theoretically possible oxidation states.n n n The present invention also relates to a process for the production of high molecular weight syndiotactic / atactic block polymers (syndiotactic trivalent element fraction of at least 70%) by polymerizing olefin monomers (particularly propylene) using the catalyst. Do too. |
| priorityDate | 1996-07-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 70.