http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2477288-C2
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_76f18951f81c4016c206a9669fc1eae4 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J2219-0004 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J2219-00166 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J2219-00186 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F110-02 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J19-2435 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F10-02 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F10-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L23-06 |
| filingDate | 2008-08-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2013-03-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4005d7ec87603cce21ee087d254d7b8b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cb26bb126deba76a2ebad6bb3f1d19ba http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4382cc6442746336d85640a957d04dbf http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_93ceb3eb9af918c9a1039b69adb8b05f |
| publicationDate | 2013-03-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | RU-2477288-C2 |
| titleOfInvention | Suspension polymerisation method |
| abstract | FIELD: chemistry. n SUBSTANCE: invention relates to a method of producing multimodal polyethylene. The method is carried out in at least two reactors which are connected in series, where 20-80 wt % of a high-molecular weight polymer is obtained in a suspension in a first reactor and 20-80 wt % of a low-molecular weight polymer is obtained in a suspension in a second reactor. The ratio of the average effective concentration of substance in the reactor of the low-molecular weight product to the average effective concentration of substance in the reactor of the high-molecular weight product is 0.25-1.5. The average effective concentration of substance in each reactor is defined as output of polyethylene obtained in the reactor (kg PE/h)/[concentration of ethylene in the reactor (mol %) × dwell time in the reactor (h) × rate of feeding catalyst into the reactor (g/h)]. The dwell time is defined as the mass of the polymer in the reactor (kg)/rate of removal of the polymer from the reactor (kg/h). The volume of the second reactor is at least 10%, preferably at least 30%, and even more preferably at least 50%, greater than the volume of the first reactor. The ratio of the length to the diameter of the first reactor L/D(1) is greater than that of the second reactor L/D(2), and is preferably greater by at least 20%. n EFFECT: method of producing multimodal polyethylene in two reactors with optimum ratio of dimensions. n 15 cl, 1 tbl, 1 ex |
| priorityDate | 2007-09-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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