| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_78ca80ad4b743c901ec136b21263f093 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2410-06 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F210-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F4-651
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F4-6565
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F110-06 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-651
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-656
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F210-06 |
| filingDate |
2017-06-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_53bd7ee9311be1a55716b8f57bcc44e6
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b827a2a114ab844b6461f41bdcef652c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_eae3b466f5cd3bbdebd6c13f0a2d6dae
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_deb3bbc98886d34dcbf4e7750de7de21
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cf5853bdb8eb598f8d7daa5aa19dad19 |
| publicationDate |
2020-02-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-2020055968-A1 |
| titleOfInvention |
Process to prepare procatalyst for polymerization of olefins |
| abstract |
The present invention relates to a process for the preparation of a procatalyst suitable for preparing a catalyst composition for olefin polymerization, said process comprising the steps of: Step A) providing or preparing a Grignard compound; Step B) contacting the Grignard compound an alkoxy- or aryloxy silane compound, to give a solid support; Step C) optionally contacting the solid support obtained with at least one activating compound; and Step D) reacting the (activated) support with a halogen-containing Ti-compound as catalytic species, an activator and at least one internal electron donor in several sub steps wherein the internal donor is added in portions during at least two of said stages to obtain a procatalyst. The invention moreover relates to a procatalyst, a catalytic system comprising said procatalyst and to a process to prepare polyolefins using said catalyst system and the polyolefins obtained therewith. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10882929-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10882924-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11254757-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11117989-B2 |
| priorityDate |
2016-09-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |