http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-20020052073-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/C08F2500-16 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F4-6592 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F112-08 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-649 |
| filingDate | 2000-12-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5b4226c9cf7e2a2b4677cce75b7ab042 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_274430320195892686943f0a89b2b6af |
| publicationDate | 2002-07-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | KR-20020052073-A |
| titleOfInvention | Half metallocene catalyst and method for preparing stereoregular vinyl aromatic polymer using the same |
| abstract | The present invention relates to a half-metallocene catalyst and a method for producing a vinyl aromatic polymer having stereoregularity using the same, and in particular, a transition metal compound catalyst of a half-metallocene compound and a vinyl aromatic polymer having a syndiotactic structure using the same. It relates to a manufacturing method of.n n n The invention provides for this purpose a) a half metallocene catalyst represented by a) YMX l [A (CH 2 CH = CHR) m ] n or b) YMX l [A (CH = CHR) m ] n , wherein M Is a Group 4 transition metal; Y is a pi ligand, cyclopentadienyl, indenyl, fluorenyl group, or derivative thereof; X is a Is a thioalkoxy group, a thioaryloxy group, an amino group, an amide group, a carboxyl group, an alkylsilyl group, or a halogen; A is a Group 6 main group element containing oxygen or sulfur or a Group 5 main group element containing nitrogen or phosphorus R is a C 1 to C 20 alkyl group, an aryl group, an allyl group, or a cycloalkyl group; l is 0 or an integer of 1 or more; n is an integer of 1 or more; l + n = 3; m is an integer of 1 or more ) And one or more vinyl aromatic monomers under a catalyst system comprising the transition metal compound catalyst and an aluminum-based promoter. Up provides a method for preparing a vinyl aromatic polymer comprising the step of polymerization.n n n The present invention is a vinyl aromatic polymer having excellent stereoregularity and syndiotacticity since it uses a catalyst system comprising a main metal catalyst and an aluminum-based promoter of a transition metal compound of a half-metallocene compound composed of a ligand having a novel structure and a Group 4 transition metal. Can be prepared with high activity. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-100497172-B1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-100440482-B1 |
| priorityDate | 2000-12-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 66.