http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2009087036-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_97a3314b853015e6d690d6d8de24fe44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_f41a41736d1ed7b7864f041748bfdf0e http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b61dcd103d8773fdbc2c54babf807c33 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b521ce40df094f56503672707df6b754 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F110-02 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F210-16 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F210-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-685 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J5-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F16L9-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F297-08 |
| filingDate | 2008-12-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2e05104462e27cef67fa7777248c581a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6ed4470ce121f0e7959b883aaa4f578a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_106637aeebb3890504ee0acbd495a376 |
| publicationDate | 2009-07-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | WO-2009087036-A1 |
| titleOfInvention | Use of an improved solid vanadium-containing ziegler-natta catalyst system for producing ethylene polymer compositions in a multistage process |
| abstract | Improved method for tailoring the molecular weight distribution and comonomer incorporation of a multimodal ethylene polymer having a lower molecular weight component and a higher molecular weight component comprising polymerizing ethylene and optionally at least one further alpha-olefin in at least two stages, wherein at least one stage is carried out in a slurry phase in the presence of an improved solid Ziegler-Natta catalyst system, said catalyst system comprising 1) a solid procatalyst formed by contacting at least: a) a Mg-alcoholate complex of the formula (I): Mg(OR1)2-n(R1)n, wherein each R1 independently represents a C1-C20 hydrocarbyl group; and 0 ≤ n < 2 and may or may not be an integer; b) an aluminium compound of the formula (II) AI(R2)mX3-m, wherein each R2 independently represents an alkyl of up to 6 carbon atoms; each X is independently a halogen; 0 ≤ m < 3 and m and may or may not be an integer c) a vanadium compound and a titanium compound in portions such as to provide a molar ratio of V:Ti from 99:1 to 1:99 and d) optionally one or more organic ligand compound(s) which is/are selected from organic compounds comprising a cyclopentadienyl anion backbone, in order to yield the solid procatalyst and 2) one or more organometallic cocatalyst(s) of the formula (III) wherein each R is independently a C1-C20-alkyl group, 0 ≤ x ≤ 2; 1 ≤ y ≤ 3; 0 ≤ z ≤ 2 and x + y + z = 3, x, y and z may or may not be an integer; a polymer obtainable by this method and use of such a polymer for the manufacture of pipes and films. |
| priorityDate | 2008-01-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 94.