http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-108727518-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F4-6421 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F4-642 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F110-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F4-02 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-642 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F110-02 |
| filingDate | 2017-04-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2020-07-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2020-07-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-108727518-B |
| titleOfInvention | Process for the polymerization of ethylene and polyethylene |
| abstract | The invention relates to the field of polymerization reaction, and discloses an ethylene polymerization method and polyethylene prepared by the method. The method for polymerizing ethylene comprises the step of polymerizing ethylene in the presence of a catalyst under polymerization reaction conditions, wherein the catalyst comprises a spherical mesoporous composite material and a magnesium salt and/or a titanium salt loaded on the spherical mesoporous composite material, and the spherical mesoporous composite material is prepared by a preparation method comprising the following steps of: (1) preparing a first mesoporous material filter cake; (2) preparing a second mesoporous material filter cake; (3) preparing a silica gel filter cake; (4) and respectively or after mixing the first mesoporous material filter cake, the second mesoporous material filter cake and the silica gel filter cake, carrying out ball milling on the ball-milled products by using a ceramic membrane filter, and then carrying out spray drying. The method uses a supported catalyst with high activity, and can obtain polyethylene products with lower bulk density and melt index. |
| priorityDate | 2017-04-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 74.