Abstract:
Metal complexes comprising certain polydentate heteroatom containing ligands, catalysts, and coordination polymerization processes employing the same are suitably employed to prepare polymers having desirable physical properties.
Abstract:
PROBLEM TO BE SOLVED: To provide a parallel reactor system suitable for the handling of fluid substances containing slurry substance and to provide a method concerning the same. SOLUTION: The parallel reactor system is provided with a reactor 9, a vessel to be placed in the reactor and holding a reaction mixture and a cannula for introducing fluid reaction substances to the vessel. A robot system 23 enables the operation of inserting the cannula into a cannula path in the reactor 9 for conveying the reactant containing the slurry to a corresponding vessel and pulling off the cannula from the cannula path after the conveyance. The related method and the cannula design are also disclosed.
Abstract:
Metal-ligand complexes that are useful as precursors to catalysts for the polymerization of olefins are provided. Certain of the catalysts are particularly effective at polymerizing ethylene and styrene into copolymers having novel properties, including a low molecular weight and close comparison between vinyl and methyl end groups.
Abstract:
A method is disclosed for screening potential catalysts for polymerization performance. The method includes the steps of reacting a potential catalyst with at least a first monomer under polymerization conditions, determining the polymerization performance of the catalyst with the at least first monomer, and using the determination as a predictor for the polymerization performance of the catalyst for at least a second monomer, wherein the first and second monomers are different from each other and the first monomer is an olefin other than ethylene. The method provides a useful, concrete and tangible result that has particular value for identifying appropriate catalysts for olefin polymerization and copolymerization.
Abstract:
A method is disclosed for screening potential catalysts for polymerization performance. The method includes the steps of reacting a potential catalyst with at least a first monomer under polymerization conditions, determining the polymerization performance of the catalyst with the at least first monomer, and using the determination as a predictor for the polymerization performance of the catalyst for at least a second monomer, wherein the first and second monomers are different from each other and the first monomer is an olefin other than ethylene. The method provides a useful, concrete and tangible result that has particular value for identifying appropriate catalysts for olefin polymerization and copolymerization.
Abstract:
Ligands, compositions, metal-ligand complexes and arrays with substituted bridged bis-biaromatic ligands and method of making and using the same, are disclosed that are useful in the catalysis of transformations such as the polymerization of monomers into polymers. The catalyts have high performance characteristics, including higher comonomer incorporation into ethylene/olef in copolymers, where such olefins are for exmaple, 1-octene, propylene or styrene. The catalysts also polymerize propylene into isotactic polypropylen e.
Abstract:
Metal-ligand complexes that are useful as precursors to catalysts for the polymerization of olefins are provided. Certain of the catalysts are particularly effective at polymerizing ethylene and styrene into copolymers having novel properties, including a low molecular weight and close comparison between vinyl and methyl end groups.