| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_34fbeb1e614ea098731393cc639cd372 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F4-61912
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F4-61927
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S526-943 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F10-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F17-00 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-619
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-6192 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F17-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-60
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-64
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F10-00 |
| filingDate |
1993-05-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_28199fc415c43c61f8f9e7f57b9e037b
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e08b7ab2ad502426b0a459525934d5b5 |
| publicationDate |
1993-12-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-0574370-A1 |
| titleOfInvention |
Metallocene catalyst component with good catalyst efficiency after aging |
| abstract |
This invention relates to a syndiospecific metallocene of a substituted iPr[ (cyclopentadienyl) (fluorenyl) ]zirconium dichloride containing long-chain terminal alkene, for example octenyl groups, on fluorene at C2/C7. The metallocene compound useful as a catalyst in the present invention is described by the general formula: R''(C₅H₄) (C₄H 4-m R' m C₅C₄H 4-n R' n )MeQ p n wherein (C₅H₄) is a cyclopentadienyl ring and (C₄H 4-m R' m C₅C₄H 4-n R' n ) is a fluorenyl radical; R' is a long chain alkene substituent having 5-20 carbon atoms on the fluorene ligand at C2 or C7, each R' may be the same or different; R'' is a structural bridge between the (C₅H₄) and (C₄H 4-m R' m C₅C₄H 4-n R' n ) rings to impart stereorigidity; Q is a hydrocarbon radical or a halogen; Me is a Group IIIB, IVB, VB, or VIB metal; m = 0 or 1; n = 1; and p is the valence of Me minus 2. Polymerizations with metallocene/MAO solutions stored at room temperature under nitrogen for several days resulted in gradual increases In polymer yields when using the metallocene of the present invention and a decrease in polymer yield when using metallocne of the prior art. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5571880-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-1060176-C
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5498581-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2004029062-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0666267-A3
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1153937-A2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-9732906-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1548018-A4
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7037872-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1548018-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0666267-A2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-2511305-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0685495-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1153937-A3 |
| priorityDate |
1992-05-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |