Matches in SemOpenAlex for { <https://semopenalex.org/work/W2013421847> ?p ?o ?g. }
Showing items 1 to 87 of
87
with 100 items per page.
- W2013421847 endingPage "292" @default.
- W2013421847 startingPage "286" @default.
- W2013421847 abstract "The synthesis, characterization and ethylene polymerization behavior of a set of Tp′MCl3 complexes (4, M=Ti, Tp′=HB(3-neopentyl-pyrazolyl)3−(TpNp); 5, M=Ti, Tp′=HB(3-tert-butyl-pyrazolyl)3−(TptBu); 6, M = Ti, Tp′=HB(3-phenyl-pyrazolyl)3−(TpPh); 7, M=Zr, Tp′=HB(3-phenyl-pyrazolyl)3−(TpPh); 8, M=Zr, Tp′ = HB(3-tert-butyl-pyrazolyl)3−(TptBu)) is described. Treatment of these tris(pyrazolyl)borate Group IV compounds with methylalumoxane (MAO) generates active catalysts for ethylene polymerization. For the polymerization reactions performed in toluene at 60 °C and 3 atm of ethylene pressure, the activities varied between 1.3 and 5.1 × 103 g of PE/mol[M] · h. The highest activity is reached using more sterically open catalyst precursor 4. The viscosity-average molecular weights (M̄ν) of the PE’s produced with these catalyst precursors varying from 3.57 to 20.23 × 105 g mol−1 with melting temperatures in the range of 127–134 °C. Further polymerization studies employing 7 varying Al/Zr molar ratio and temperature of polymerization showed that the activity as well as the polymer properties are dependent on these parameters. In that case, higher activity was attained at 60 °C. The viscosity-average molecular weights of the polyethylene’s decreases with increasing Al/Zr molar ratio." @default.
- W2013421847 created "2016-06-24" @default.
- W2013421847 creator A5030886010 @default.
- W2013421847 creator A5034196121 @default.
- W2013421847 date "2004-01-01" @default.
- W2013421847 modified "2023-10-01" @default.
- W2013421847 title "Titanium and zirconium complexes containing sterically hindered hydrotris(pyrazolyl)borate ligands: synthesis, structural characterization, and ethylene polymerization studies" @default.
- W2013421847 cites W1965256068 @default.
- W2013421847 cites W1970732055 @default.
- W2013421847 cites W1987654003 @default.
- W2013421847 cites W1988084900 @default.
- W2013421847 cites W1988350776 @default.
- W2013421847 cites W1994173901 @default.
- W2013421847 cites W1999795460 @default.
- W2013421847 cites W2002788226 @default.
- W2013421847 cites W2013464543 @default.
- W2013421847 cites W2014262890 @default.
- W2013421847 cites W2015715857 @default.
- W2013421847 cites W2029658982 @default.
- W2013421847 cites W2036356924 @default.
- W2013421847 cites W2037173065 @default.
- W2013421847 cites W2040239534 @default.
- W2013421847 cites W2060700025 @default.
- W2013421847 cites W2076064852 @default.
- W2013421847 cites W2144332006 @default.
- W2013421847 cites W2149295256 @default.
- W2013421847 cites W2315599988 @default.
- W2013421847 cites W2318881486 @default.
- W2013421847 cites W2950102238 @default.
- W2013421847 doi "https://doi.org/10.1016/j.jorganchem.2003.10.013" @default.
- W2013421847 hasPublicationYear "2004" @default.
- W2013421847 type Work @default.
- W2013421847 sameAs 2013421847 @default.
- W2013421847 citedByCount "28" @default.
- W2013421847 countsByYear W20134218472012 @default.
- W2013421847 countsByYear W20134218472015 @default.
- W2013421847 countsByYear W20134218472016 @default.
- W2013421847 crossrefType "journal-article" @default.
- W2013421847 hasAuthorship W2013421847A5030886010 @default.
- W2013421847 hasAuthorship W2013421847A5034196121 @default.
- W2013421847 hasConcept C161790260 @default.
- W2013421847 hasConcept C166940927 @default.
- W2013421847 hasConcept C178790620 @default.
- W2013421847 hasConcept C179104552 @default.
- W2013421847 hasConcept C185592680 @default.
- W2013421847 hasConcept C188027245 @default.
- W2013421847 hasConcept C201194858 @default.
- W2013421847 hasConcept C2778597550 @default.
- W2013421847 hasConcept C2779751980 @default.
- W2013421847 hasConcept C44228677 @default.
- W2013421847 hasConcept C501308230 @default.
- W2013421847 hasConcept C521977710 @default.
- W2013421847 hasConcept C534791751 @default.
- W2013421847 hasConceptScore W2013421847C161790260 @default.
- W2013421847 hasConceptScore W2013421847C166940927 @default.
- W2013421847 hasConceptScore W2013421847C178790620 @default.
- W2013421847 hasConceptScore W2013421847C179104552 @default.
- W2013421847 hasConceptScore W2013421847C185592680 @default.
- W2013421847 hasConceptScore W2013421847C188027245 @default.
- W2013421847 hasConceptScore W2013421847C201194858 @default.
- W2013421847 hasConceptScore W2013421847C2778597550 @default.
- W2013421847 hasConceptScore W2013421847C2779751980 @default.
- W2013421847 hasConceptScore W2013421847C44228677 @default.
- W2013421847 hasConceptScore W2013421847C501308230 @default.
- W2013421847 hasConceptScore W2013421847C521977710 @default.
- W2013421847 hasConceptScore W2013421847C534791751 @default.
- W2013421847 hasIssue "2" @default.
- W2013421847 hasLocation W20134218471 @default.
- W2013421847 hasOpenAccess W2013421847 @default.
- W2013421847 hasPrimaryLocation W20134218471 @default.
- W2013421847 hasRelatedWork W2014267921 @default.
- W2013421847 hasRelatedWork W2016942640 @default.
- W2013421847 hasRelatedWork W2025239265 @default.
- W2013421847 hasRelatedWork W2060286207 @default.
- W2013421847 hasRelatedWork W2088319221 @default.
- W2013421847 hasRelatedWork W2359085642 @default.
- W2013421847 hasRelatedWork W2392876036 @default.
- W2013421847 hasRelatedWork W2906542319 @default.
- W2013421847 hasRelatedWork W3024355719 @default.
- W2013421847 hasRelatedWork W3159946496 @default.
- W2013421847 hasVolume "689" @default.
- W2013421847 isParatext "false" @default.
- W2013421847 isRetracted "false" @default.
- W2013421847 magId "2013421847" @default.
- W2013421847 workType "article" @default.