| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_630b360599ea5cf4b5bcbc0c6c0a3e2d |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F297-083 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F297-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F297-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-64 |
| filingDate |
1980-10-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bfed46ab91debdad54501eee9fdcb090
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f539834b12383faa605ae82f31816bf4
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5407da3e3a8152b127b15250a1b94337
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3a65a87c9a4aa84474b2498ac4cfcfb2 |
| publicationDate |
1981-05-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-0028076-A1 |
| titleOfInvention |
Process for producing propylene-ethylene block copolymers |
| abstract |
A propylene-ethylene block copolymer is produced in the presence of a catalytic system essentially comprising an organoaluminum compound and a solid titanium trichloride catalytic complex having an atomic ratio of Al to Ti of less than 0.15 and having a comlexing agent in two stages of polymerization:n a) a first stage wherein propylene is polymerised in the presence of liquid propylene and hydrogen to produce a propylene homopolymer having a melt flow index of 1 to 150 at a ratio of 70 to 95% by weight based on a total of polymers; and b) a second stage copolymerized wherein the polypropylene from stage (a) is with propylene and ethylene in the presence of hydrogen and liquid propylene at a concentration of propylene in the vapor phase, based on the total of propylene and ethylene in the vapor phase, of 50 to 85 mol.% and at a concentration of hydrogen in the vapor phase, based on the total of propylene and ethylene in the vapor phase, of 0.5 to 30 mol.% to produce an ethylene-propylene copolymer having a melt flow index of 10- 7 to 0.1 at a ratio of 5 to 30% by weight based on the total polymers. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0808870-A3
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-9740080-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0808870-A2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6221974-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/FR-2509736-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0298453-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0480536-A2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6710130-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0480536-A3
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0263718-A3
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5962595-A |
| priorityDate |
1979-10-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |