| Predicate |
Object |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F110-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L2308-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S526-905
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S526-901 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F10-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F297-083
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2-34
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F297-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L23-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F210-06 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F110-06 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L23-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-34
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F297-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F10-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F210-06 |
| filingDate |
2001-03-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f836999eb7384607e3ec5d674078e946
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ac29bb8ba483898daaa91eb2414abe7c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_339a2f1f18d1e340ddb3518fc4ba491c |
| publicationDate |
2003-07-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-2003130444-A1 |
| titleOfInvention |
Method of polymerizing olefin |
| abstract |
The process for polymerizing olefins uses a plurality of series-connected polymerization reactors in which at least one of second and subsequent reactors is a vapor-phase polymerization reactor containing a multicomponent gas. The process comprises the steps of: taking the multicomponent gas out of the vapor-phase polymerization reactor; mixing the multicomponent gas with an inert gas which is lighter than at least one component of the multicomponent gas, thereby obtaining a mixed gas; compressing and/or cooling the mixed gas to liquefy a part of the multicomponent gas; discharging at least a part of a gaseous mixture comprising the inert gas and an unliquefied multicomponent gas out of a reaction system; and returning a fluid comprising the remainder of the gaseous mixture and the liquefied multicomponent gas to the vapor-phase polymerization reactor. By mixing the multicomponent gas taken out of the vapor-phase polymerization reactor with the inert gas, the composition of gas in the vapor-phase polymerization reactor is effectively controlled, thereby ensuring a stable production of olefin polymers of a desired molecular weight distribution and composition. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7217772-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2006217501-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2012010354-A1 |
| priorityDate |
2000-03-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |