6533b836fe1ef96bd12a0b33
RESEARCH PRODUCT
Biphasic ethylene polymerisation using ionic liquid over a titanocene catalyst activated by an alkyl aluminium compound
Wioletta Ochędzan-siodłakBeata Sacher-majewskasubject
chemistry.chemical_classificationEthylenePolymers and PlasticsBiphasic processOrganic ChemistryMetallocene catalystGeneral Physics and AstronomyPolyethylenePost-metallocene catalystIonic liquidEthylene polymerisationCatalysischemistry.chemical_compoundchemistryTetrachloroaluminateIonic liquidPolymer chemistryMaterials ChemistryMetalloceneAlkyldescription
Abstract 1-n-Butyl-3-methylimidazolium tetrachloroaluminate ([BMIM]+[AlCl4]−) was applied to biphasic ionic liquid/hexane ethylene polymerisation as a medium of the Cp2TiCl2 titanocene catalyst activated by alkylaluminium compounds (MAO, AlEt2Cl, AlEt3). The best results were obtained using AlEt2Cl. The results show that catalyst recycling, higher ethylene pressure, and greater Al/Ti molar ratio along with a greater volume of the ionic liquid phase enhance catalyst activity. The polyethylene gathered from the hexane phase is characterised primarily by its high purity. Its physical properties remain polyethylene obtained over a heterogeneous metallocene catalyst. Thus, biphasic ionic liquid polymerisation using a metallocene catalyst is possible and offers interesting technological implications.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2007-08-01 | European Polymer Journal |