| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_e3b3f4f8df8306f743faf2d4a4af65e1 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2500-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2500-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2500-05
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2500-07 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F210-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2-34
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2-01
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2-001
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F110-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F10-00 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F110-02 |
| filingDate |
2017-11-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2019-12-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4cad5ec531d3255da16be9099cf1c58a
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1e4f041eee1ef5730e04c996ea5956c1 |
| publicationDate |
2019-12-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
CA-3043149-C |
| titleOfInvention |
Olefin polymerization process in a gas-phase reactor having three or more polymerization zones |
| abstract |
Process for preparing an olefin polymer in the presence of hydrogen in a gas-phase polymerization reactor comprising three or more polymerization zones and at least two thereof are sub-zones of a polymerization unit, in which the growing polymer particles flow downward in a densified form, wherein at least one polymerization zone has a ratio of hydrogen to the sum of olefins which is by a factor of at least 1.5 lower than the ratio of hydrogen to the sum of olefins in the polymerization zone having the highest ratio of hydrogen to the sum of olefins and which is by a factor of at least.5 higher than the ratio of hydrogen to the sum of olefins in the polymerization zone having the lowest ratio of hydrogen to the sum of olefins. |
| priorityDate |
2016-11-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |