Stauffer Chemical Company

Texas Alkyls, Inc.

Michael J Breen

Dennis B Malpass

Andrzej M Piotrowski

Loyd W Fannin

Elliot I Band

Adducts of a trialkylaluminum or a dialkylaluminum hydride and diisoalkenyl benzene compounds have been discovered. Catalyst components for the polymerization of olefins have also been developed which comprise, as the cocatalyst, the reaction product of a trialkylaluminum or a dialkylaluminum hydride (e.g., diisobutylaluminum hydride) and an alkenyl-substituted benzene (e.g., diisopropenyl benzene).

Olefin polymerization or copolymerization catalyst components

Aluminum-containing compositions for use particularly as olefin polymerization or copolymerization cocatalysts are produced by reaction of trialkylaluminums or dialkylaluminum hydrides with 1,3- or 1,4-pentadiene at a mole ratio of aluminum compound to pentadiene of approximately 1:1, with removal during the reaction of evolved olefin.

Olefin polymerization of copolymerization catalyst components

Fluoroalkoxyaluminum compounds and their use in polymerization processes

Production of halide-and alkoxy-containing magnesium compositions

Isotactic index improvement is achieved for C.sub.3 and higher alpha olefins in systems containing a catalyst component comprising titanium supported on a magnesium halide support. The titanium component is formed by copulverizing the magnesium halide with one or more electron donors followed by treatment with liquid titanium halide. The improvement is achieved by using a dialkylaluminoxane component with the trialkylaluminum co-catalyst normally used. In slurry polymerizations, the isotactic index of the polymer has been improved.

Olefin polymerization catalyst and process

Growing community of inventors

LaPorte, TX, United States of America

Michael J Breen