Predicate |
Object |
assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_2cb72657cf0479385a9b5e655af1e16f |
classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L2308-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F110-06 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/C08F210-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F297-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F297-083 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L23-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F10-00 |
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/C08F210-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F297-08 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 |
2001-03-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2635d29699e7cc4024e5dc2df441caa4 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6d8708113e4406b979cd54d31d42063d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2ac525898fb89caee912ab4c7141207c |
publicationDate |
2003-01-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
publicationNumber |
EP-1275661-A1 |
titleOfInvention |
Method of polymerizing olefin |
abstract |
The process for polymerizing olefins uses a plurality of series-cannected 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. <IMAGE> |
isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2004039847-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7115687-B2 |
priorityDate |
2000-03-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
type |
http://data.epo.org/linked-data/def/patent/Publication |