http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CA-2311543-C
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_dad999e89cee697718081f41091bffbb http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1010e3862914acdd087e73d76911ec6d http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0de2af57e68fefa3497b51ec945de343 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F297-083 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F210-16 |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F110-06 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-01 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F297-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-642 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F210-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-658 |
| filingDate | 1998-11-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2008-02-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_fb88860eba64770da7dca1efdb4b74e4 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9ce39f218c54fc3d48c955d2bb0769a2 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ea9bbca8d70b9fa4d42924ffb556a1f8 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1f6f15740da5954932342239e4b049e9 |
| publicationDate | 2008-02-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CA-2311543-C |
| titleOfInvention | Process for the preparation of polypropylene-b-poly(ethylene-co-propylene) |
| abstract | A process for preparing polypropylene-b-poly(ethylene-co-propylene) by the use of a tubular continuous polymerizer in the presence of an olefin-polymerizing catalyst comprising a solid catalyst component (1) composed of titanium and halogen; an organosilicon compound (2); and, if necessary, at least one electron-donating compound (3) selected from the group consisting of organosilicon compounds represented by the general formula: R n Si(OR')4-n (wherein R and R' are each independently a C1-C10 hydrocarbon group; and n is an integer of 1 to 3) and nitrogenous heterocyclic compounds, wherein the solid catalyst component (1) is preliminarily brought into contact with the organosilicon compound (2) in the presence of the electron-donating compound (3), and then a polypropylene segment is formed through polymerization, followed by formation of a poly(ethylene-co-propylene) segment at the end of the polypropylene segment through polymerization. The process enables efficient preparation of the polymer with a reduced content of inorganic contaminants, even when the polymer is one having a weight-average molecular weight of as high as 100,000 or more. |
| priorityDate | 1997-11-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 120.