http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10800864-B2
Outgoing Links
Predicate | Object |
---|---|
assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0a906fcc273ed8131a3b80b3b8e9bb31 |
classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L2314-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L2205-03 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L2205-025 |
classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F210-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F210-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F4-6492 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2500-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2500-07 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F4-6465 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2500-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L23-0815 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F4-6555 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L23-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2-001 |
classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F210-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L23-16 |
filingDate | 2019-06-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
grantDate | 2020-10-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bc92f4898752ce9d4741ebf7a822c679 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_33a7b9f30e3385294d6887cf370a36d0 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7d1d64e695edf3355d3b116c44ac49fb http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0747b7dacc58cb3a8d6541ddba535f3e http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1f5888da079e9f52510a65d31fcf4706 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d18d07e51b7c7510038ecc9fe7de79e0 |
publicationDate | 2020-10-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
publicationNumber | US-10800864-B2 |
titleOfInvention | Process for producing polyethylene |
abstract | The present invention relates to a process for producing ethylene copolymers in a multistage process comprising at least one slurry phase polymerization stage and at least one gas phase polymerization stage in the presence of Ziegler Natta catalyst comprising a solid catalyst component, a cocatalyst of a compound of group 13 metal and an external additive selected from alkoxysilanes of formula (I) R1nSi(OR2)4-n, (I) where n is an integer 0 to 3, each R1 are equal or different and are selected among H, halogen, alkyl groups of 1 to 6 carbon atoms optionally substituted with one or more halogen atoms, alkenyl groups of 2 to 6 carbon atoms optionally substituted with one or more halogen atoms, and aryl groups of 6 to 12 carbon atoms optionally substituted with one or more halogen atoms, or the R′groups can form with the Si atom they are linked to a ring of 3 to 8 ring atoms, provided that all R1 are not hydrogen, R2 are equal or different and are selected among alkyl groups of 1 to 6 carbon atoms optionally substituted with one or more halogen atoms, alkenyl groups of 2 to 6 carbon atoms optionally substituted with one or more halogen atoms, and aryl groups of 6 to 12 carbon atoms optionally substituted with one or more halogen atoms, or the OR2 groups can form with the Si atom they are linked to a ring of 3 to 8 ring atoms, halogen is Br, Cl or F. The invention further relates to the catalysts and use thereof in said multistage process r for producing ethylene copolymers having melt flow rate ratio FRR21/5 at least 40 and/or polydispersity index PDI of at least 27. |
priorityDate | 2015-02-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 172.