| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_f6e960aa6ad2ba6401030159343ebe68 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S526-943 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F297-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F297-083
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F4-642 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F297-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-654
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-642 |
| filingDate |
1996-02-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b7f4c8416355d720c81894f4e33e34be
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a5764f142801589c0787b6cf07464b61 |
| publicationDate |
1997-03-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-0763553-A1 |
| titleOfInvention |
Process for preparing olefin polymer |
| abstract |
The present invention provides processes for preparing olefin polymers, by which olefin polymers composed of a propylene block copolymer component and an ethylene/α-olefin copolymer component are directly prepared by polymerization and olefin polymers excellent in impact resistance as well as in mechanical strength such as rigidity, moldability and heat resistance can be prepared. In the processes of the invention, a step (i) for preparing a crystalline polypropylene component and a step (ii) for preparing a low-crystalline or non-crystalline ethylene/α-olefin copolymer component are carried out in an arbitrary order using an olefin polymerization catalyst to form a propylene block copolymer component; then another catalyst component is added to the polymerization system; and a step (iii) for preparing a low-crystalline or non-crystalline ethylene/α-olefin copolymer component is carried out. The components of the olefin polymerization catalyst used for preparing the propylene block copolymer component and the components of another catalyst used for preparing the ethylene/α-olefin copolymer component (iii) are selected from (A) a solid titanium catalyst component, (B) an organometallic compound, (C) an electron donor, (D) a specific transition metal compound containing a ligand having cyclopentadienyl skeleton, (E-1) an organoaluminum oxy-compound and (E-2) Lewis acid or ionic compound. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2005090426-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6355731-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-0011057-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7371806-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/AU-761160-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-03106514-A3
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-03106514-A2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-03104290-A3
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-03104290-A2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1182216-A3
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1182216-A2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2011230108-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/TW-I391412-B
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8389655-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6770714-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7951882-B2 |
| priorityDate |
1995-02-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |