Abstract:
PROBLEM TO BE SOLVED: To provide a process for copolymerization of ethylene and propylene to form a copolymer by contacting a mixture comprising ethylene and propylene under polymerization conditions with a catalyst composition comprising a metal complex, a cocatalyst, and a polymerization modifier.SOLUTION: The metal complex comprises a complex of hafnium and a pyridylamine. The cocatalyst comprises tris(pentafluorophenyl)boron or a trialkylammonium salt of tetrakis(pentafluorophenyl)borate. The polymerization modifier comprises the reaction product of a tri(Calkyl)aluminum with bis(trimethylsilyl)amine, 1-octanol, 1-dodecanol, phenol, 4-methyl-2,6-di(t-butyl)phenol, or t-butyldimethylsiloxane.
Abstract:
PROBLEM TO BE SOLVED: To provide a combinatorial method and apparatus for the rapid and reliable discovery and development of a polymerization modifier-containing composition that is particularly adapted to use in olefin polymerizations.SOLUTION: This invention relates to a combinatorial method for identifying a catalyst composition for use in the homogeneous addition polymerization of olefin monomers, the catalyst composition comprising a transition metal compound, a cocatalyst and a polymerization modifier, as well as catalyst compositions and improved olefin polymerization processes resulting therefrom.
Abstract:
A supported catalyst composition suitable for use in converting synthesis gas to alcohols comprises a catalytic metal, a catalyst promoter and a catalyst support.