| Predicate |
Object |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F110-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F4-65912
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F4-65927
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S526-943
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-52
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2500-15 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F4-65927
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F4-025
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F12-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F4-65916
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F4-65912
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F110-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F10-06 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F110-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-6392
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-659 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F10-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-60
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F12-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-642
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-6592 |
| filingDate |
2002-04-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4c2d37d47ddf32b4fed87afc30222653
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_10c891ab59a66361226f8b1b98f7588b |
| publicationDate |
2002-10-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-2002147105-A1 |
| titleOfInvention |
Process for producing stereospecific polymers |
| abstract |
Supported stereospecific catalysts and processes for the stereotactic propagation of a polymer chain derived from ethylenically unsaturated monomers which contain three or more carbon atoms or which are substituted vinyl compounds, such as styrene and vinyl chloride. One application is the stereospecific propagation of C 3 -C 4 alpha olefins, particularly the polymerization of propylene to produce syndiotactic polypropylene over a supported metallocene catalyst comprising a stereospecific metallocene catalyst component incorporating a metallocene ligand structure having two sterically dissimilar cyclopentadienyl ring structures coordinated with the central transition metal atom. Both of the cyclopentadienyl groups are in a relationship with one another by virtue of bridge or substituent groups, which provide a stereorigid relationship relative to the coordinating transition metal atom to prevent rotation of said ring structures. The metallocene catalyst component and a co-catalyst component, an alumoxane or an alkyl aluminum, are supported on a particulate silica support comprising spheroidal silica particles having an average diameter within the range of 5-40 microns and an average effective pore size within the range of 50-350 angstroms. The particulate silica support contains at least 50 wt. % of the supported catalyst component within the pore volume of the silica support. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10077325-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10570219-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10759886-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11059918-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11192961-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2016195875-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2016195876-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10329360-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11492425-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10280235-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10280233-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10280240-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11672866-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9855217-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10119016-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9809664-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9725537-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9725569-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9920176-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2015042279-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10294316-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11344629-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10287372-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10723821-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9738779-B2 |
| priorityDate |
1999-03-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |