| 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 |
1980-09-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1982-07-13-04:00^^<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_3a65a87c9a4aa84474b2498ac4cfcfb2
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5407da3e3a8152b127b15250a1b94337 |
| publicationDate |
1982-07-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-4339557-A |
| titleOfInvention |
Process for producing propylene-ethylene block copolymer |
| 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 complexing agent in two stages of polymerization; (a) a first stage for polymerizing propylene in the presence of a 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 for copolymerizing propylene and ethylene in the presence of hydrogen and a liquid propylene at a concentration of propylene in vapor phase based on a total of propylene and ethylene in vapor phase of 50 to 85 mol. % and at a concentration of hydrogen in vapor phase based on a total of propylene and ethylene in vapor phase of 0.5 to 30 mol %, to produce 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 a total of polymers. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11242416-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11242417-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2009171019-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4500682-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8226747-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5212247-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5922813-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/SG-153789-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4946898-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4948841-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4455405-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2010212496-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5314956-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0135834-A2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0135834-A3
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4760113-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4547552-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4550144-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4950720-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-1128169-C
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5218052-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11325996-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5708090-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5736613-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4820775-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7799866-B2 |
| priorityDate |
1979-10-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |