http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-104520338-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F10-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F10-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F110-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2-001 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F10-00 |
| filingDate | 2012-12-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2016-08-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2016-08-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-104520338-B |
| titleOfInvention | The multistage polymerization process of alkene |
| abstract | The present invention relates to, during a kind of alkene multi-step polymerization occurred in the gas phase polymerization still of at least two series connection, from the first gas phase polymerization still, polyolefin particles is transmitted the method to the second gas phase polymerization still.Wherein the first gas phase reaction kettle is the fluidized-bed reaction still including gas distribution grid and sedimentation pipe, and the upper opening of sedimentation pipe is incorporated in distribution grid, and sedimentation pipe also includes a polymer beads bed that can move in sedimentation pipe from top to bottom.Method comprises the following steps: introduces a certain amount of fluid in sedimentation pipe, and makes introduced amount meet the ascending air generated on polyolefin particles bed higher than fluid introducing point；Polyolefin particles is taken out from the lower end of sedimentation pipe；And the polyolefin particles taken out is transmitted to the second gas phase polymerization still.Olefine polymerizing process includes transmitting the such a process of polyolefin particles, and in the polymerization process of alkene and by polyolefin particles from fluidized-bed reaction still in discharge process, the reactor used is suitable as the first gas phase polymerization still. |
| priorityDate | 2011-12-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 78.