http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2018167301-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_78ca80ad4b743c901ec136b21263f093 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J2219-2471 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J2219-00033 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2-01 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F4-52 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J19-0066 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F110-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F4-654 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F10-06 |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-651 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J4-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-01 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F110-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-654 |
| filingDate | 2018-03-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bd6043b3b5f4c681e1b44382f6087d4f |
| publicationDate | 2018-09-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | WO-2018167301-A1 |
| titleOfInvention | Process for the polymerization of a polyolefin |
| abstract | The present invention relates to a process for the polymerization of a polyolefin, preferably polypropylene, in a polymerization reactor by contacting one or more olefins, preferably propylene, with a catalyst system in said reactor while stirring, said catalyst system comprising: * a procatalyst comprising 1) a magnesium-containing support, 2) titanium, 3) a phthalate-free internal electron donor; and 4) optionally an activator; wherein said procatalyst is obtained by the following process: i) contacting a compound R 4 ,MgX 4 n 2 -, with an alkoxy- or aryloxy-containing silane compound to give a first intermediate reaction product, being a solid Mg(OR 1 ) x X 1 n 2 -x, R 4 is the same as R 1 being a linear, branched or cyclic hydrocarbyl group independently selected from alkyl, alkenyl, aryl, aralkyl, alkoxycarbonyl or alkylaryl groups, and one or more combinations thereof; wherein said hydrocarbyl group may be substituted or unsubstituted, may contain one or more heteroatoms and preferably has between 1 and 20 carbon atoms; wherein X 4 and X 1 are each independently a halide; z is in a range of larger than 0 and smaller than 2, being 0 < z < 2; x is in a range of larger than 0 and smaller than 2, being 0 < x < 2; ii) optionally contacting the solid Mg(OR 1 ) x X 1 n 2 -x obtained in step ii) with at least one activating compound selected from the group formed by activating electron donors and metal alkoxide compounds of formula M'(OR 2 ), w (O R I ) w or M 2 (OR 2 )v- w (R I ) w , to obtain a second intermediate product; wherein: M 1 is a metal selected from the group consisting of Ti, Zr, Hf, Al or Si; v is the valency of M 1 ; M 2 is a metal being Si; v is the valency of M 2 ; R 2 and R 3 are each independently a hydrocarbyl group; w is smaller than v, v is preferably 3 or 4; iii) contacting the first or second intermediate reaction product, obtained respectively in step i) or ii), with the halogen-containing Ti-compound, the internal electron donor and optionally an activator; * optionally an external electron donor; and * a co-catalyst, being a alkyl aluminum co-catalyst preferably having formula AlH n R 3 -n, wherein H is a hydride; n is 0, 1 or 2, preferably 0; wherein R is a C1-C12 alkyl group, preferably ethyl; wherein a portion of the co-catalyst and optionally a portion of the external electron donor is (are) pre-contacted with the procatalyst prior to the addition of the catalyst system to the polymerization reactor. The present invention also relates to a polyolefin and a shaped article comprising said polyolefin. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2021063930-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2021105373-A1 |
| priorityDate | 2017-03-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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