| Predicate |
Object |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2500-07
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2410-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J37-0203
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J2523-00 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J23-002
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J35-1023
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J35-1047
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J23-26
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F10-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2-34
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J37-0205
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J21-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J21-063
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F110-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J8-0015
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J37-088
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B60K15-03
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J35-023 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F210-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-63
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-34
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B60K15-03
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J8-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-69
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B65D88-00 |
| filingDate |
2016-07-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2020-09-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate |
2020-09-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
CN-107922541-B |
| titleOfInvention |
Ethylene Gas Phase Polymerization Process |
| abstract |
The present invention relates to a gas phase polymerization process for the production of ethylene polymers in the presence of a catalyst composition based on chromium compounds, titanium compounds and silica support materials. The silica support material has a surface area (SA) of between 685 m 2 /g and 800 m 2 /g, a pore volume (PV) of between 1.65 cm 3 /g and 1.85 cm 3 /g and a pore volume of 25 microns and average particle size in the range between 35 microns. The catalyst composition is injected into the polymerization reactor through a dry catalyst feeder. |
| priorityDate |
2015-08-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |