http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1057834-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b9ff2988b0c12145a439b1a8945d0e6d |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F210-16 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-654 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F10-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F210-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F210-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-00 |
| filingDate | 2000-05-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d7b9209b6971e5b2af8d73e351798f38 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9dedf20d6f4fca10b6548631f95207f3 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7d7f0e7c064e862e13b26913ffdba0ee http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_47d3a35bfb023057988988e92d1c859c |
| publicationDate | 2000-12-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-1057834-A1 |
| titleOfInvention | Staged reactor polymerization process |
| abstract | In a process for the in situ blending of polymers comprisingncontacting ethylene and one or more comonomers in two or morenfluidized bed reactors connected in series, under polymerizationnconditions, with a catalyst system comprising (i) a supported ornunsupported magnesium/titanium based precursor containing annelectron donor and (ii) a hydrocarbyl aluminum cocatalyst in sufficientnamount to complete the activation of the precursor, the improvementncomprisingn (A) increasing or decreasing the melt flow ratio and/ornmolecular weight of the blend by, respectively, decreasing or increasingnthe mole ratio of a precursor activator compound to the electron donor;nor (B) increasing or decreasing the bulk density of the blend by,nrespectively, increasing or decreasing the mole ratio of a precursornactivator compound to the electron donornwith the following provisos:n (I) the mole ratio of the precursor activator compound tonthe electron donor is in the range of about 0.1:1 to about 1:1; (II) the precursor activator compound can be onencompound or a sequential mixture of two different compounds; (III) each precursor activator compound has the formulanM(R n )X (3-n) wherein M is Al or B; each X is independentlynchlorine, bromine, or iodine; each R is independently a saturatednaliphatic hydrocarbon radical having 1 to 14 carbon atoms,nprovided that when M is Al, n is 1 to 3 and when M is B, n is 0 ton1.5; (IV) the activation of the precursor is carried out prior tonthe introduction of the precursor into the reactors; and (V) the activation in proviso (IV) is partial. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2010125020-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1764390-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2012152775-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-2246372-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7989549-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-2246368-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-100575405-C http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2010125018-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102395610-B http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2009080359-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2464282-C2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-03102075-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102395610-A |
| priorityDate | 1999-06-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 162.