http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H07118342-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5128cfc84a0fb189fceb3cd240c44493 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F10-00 |
| filingDate | 1993-10-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e50eb89579bca2da45ba6d6e51146108 |
| publicationDate | 1995-05-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-H07118342-A |
| titleOfInvention | Gas phase polymerization of olefins |
| abstract | (57) [Summary] [Structure] Among the gas phase polymerization processes of olefins that are continuously polymerized under a plurality of polymerization conditions in which the polymerization vessels are arranged in series, the polymer is intermittently supplied from the first gas phase polymerization process. Withdrawal, followed by excluding only the entrained gas from the withdrawn polymer and entrained gas, subsequently pressurizing the polymer with the entrained gas removed, and then the second gas-phase polymerization step And a second gas phase polymerization process, which receives the polymer and entrained gas extracted from the first gas phase polymerization process and is divided into two parts, a gas tank and a powder tank. A vapor-phase multi-stage polymerization method characterized in that the steps are sequentially arranged. [Effects] The problem of pressure fluctuation of the second polymerization reactor system during pressurization of the intermediate receiving tank of the prior art is substantially eliminated, and by supplying the gas from the second polymerization reactor system to the pressurization, the gas composition can be improved. There is no restriction on the controllable range, and the polymer can be manufactured in a wide range of composition distribution and molecular weight distribution. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2011055802-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8735513-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2010143972-A |
| priorityDate | 1993-10-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 82.