Borealis Ag

Merck Patent Gesellschaft MIT Beschr&auml;nkter Haftung

Jana Knorr

Manfred Arnold

Eike Poetsch

Manfred Raetzsch

Walter Kaminsky

Herbert Schumann

Birgit Corinna Wassermann

Sebastian Dechert

Andre Laban

Katrin K&ouml;hler

Described are catalyst systems having aluminium alkyl complexes of the formula (I) described herein applied to magnesium chloride, SiO or SiO in combination with MgCl as support in the presence of titanium halides or vanadium halides and internal and, if desired, external donors act both as cocatalysts and as stereoselectivity promoters in heterogeneous polymerizations of &agr;-olefins. Also described are polymerization methods using these catalyst systems.

Catalyst system for the Ziegler-Natta polymerization of olefins

Blends of olefin polymers and syndiotactic vinyl polymers are produced by the catalytic polymerization of olefins and aromatic vinyl compounds or methacrylate esters as vinyl compounds in inert diluents in the presence of a catalyst mixture of transition metal compounds, metalloxane compounds and metal alkyl compounds. The blends have a finely dispersed distribution of the blending components and are suitable for the production of films, sheets, fibers, panels, coatings, pipes, hollow objects, injection molded products and foams.

Blends of olefin polymers and syndiotactic vinyl polymers

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Dessau, Germany

Jana Knorr