| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_46ffc67cd29dd51dbd0bc0e335dd3994 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J2208-00274
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J2219-185
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J2208-00752
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J2208-00256
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J2219-00779
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S526-901
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J2219-00094 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F10-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J8-0015
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J8-1827
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J19-18 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J8-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-01
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J8-24
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-34
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F10-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F10-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J19-18 |
| filingDate |
1991-02-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ccfc92ab064f793183e5c8b3b7cfe37d
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_939f44246cbdef195efde0291f32bf0a
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c484ea3900188cc3eefb957586d6633f |
| publicationDate |
1991-09-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
CA-2037175-A1 |
| titleOfInvention |
Process and device for the gas-phase polymerisation of alpha-olefins |
| abstract |
ABSTRACT OF THE DISCLOSURE PROCESS AND DEVICE FOR THE GAS PHASE POLYMERIZATION OF ALPHA-OLEFINS The present invention relates to a process and a device for polymerizing alpha-olefins such as ethylene or propylene in a gas phase. The device comprises a gas phase polymerization reactor (5) into which a suspension of prepolymer particles in liquid saturated hydrocarbon(s) is continuously introduced. The prepolymer suspension is prepared in one or more prepolymerization vessels (14) and is continuously passed to a post-treatment unit comprising a degassing means (10) wherein most of the dissolved unreacted olefinic monomer(s) is separated. Preferably, the post-treatment unit may comprise a particle separation means (11) for removing the finest and/or coarsest prepolymer particles from the suspension and/or a concentration means (11a) for concentrating the suspension. High activity catalyst can be used in the process with reduced amounts of prepolymer agglomerates. Prepolymer can be obtained with a constant quality and a desired size. |
| priorityDate |
1990-03-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |