Lummus Novolen Technology Gmbh

Lammus Novolen Technology Gmbh

Anita Dimeska

Andreas Winter

Matthew G Thorn

Thorsten Sell

Joerg Schulte

Ralph-Dieter Maier

Vassilios Galiatsatos

Werner Schoene

Nicola Stephanie Paczkowski

Alberto Benito

Guillermo Cassano

Leandro Roth

Hartmut Siebert

Franz Langhauser

José Pezzutti

Certain metallocene compounds are provided that, when used as a component in a supported polymerization catalyst under industrially relevant polymerization conditions, afford high molar mass homo polymers or copolymers like polypropylene or propylene/ethylene copolymers without the need for any &#x3b1;-branched substituent in either of the two available 2-positions of the indenyl ligands. The substituent in the 2-position of one indenyl ligand can be any radical comprising hydrogen, methyl, or any other C-Chydrocarbon which is not branched in the &#x3b1;-position, and the substituent in the 2-position of the other indenyl ligand can be any C-Chydrocarbon radical with the proviso that this hydrocarbon radical is branched in the &#x3b2;-position. This metallocene topology affords high melting point, very high molar mass homo polypropylene and very high molar mass propylene-based copolymers. The activity/productivity levels of catalysts including the metallocenes of the present invention are exceptionally high.

Metallocene compounds, catalysts comprising them, process for producing an olefin polymer by use of the catalysts, and olefin homo- and copolymers

Certain metallocene compounds are provided that, when used as a component in a supported polymerization catalyst under industrially relevant polymerization conditions, afford high molar mass homo polymers or copolymers like polypropylene or propylene/ethylene copolymers without the need for any &#x3b1;-branched substituent in either of the two available 2-positions of the indenyl ligands. The substituent in the 2-position of one indenyl ligand can be any radical comprising hydrogen, methyl, or any other C-Chydrocarbon which is not branched in the &#x3b1;-position, and substituent in the 2-position of the other indenyl ligand can be any C-Chydrocarbon radical with the proviso that this hydrocarbon radical is branched in the &#x3b2;-position and that the &#x3b2;-carbon atom is a quarternary carbon atom and part of a non-cyclic hydrocarbon system. This metallocene topology affords high melting point, very high molar mass homo polypropylene and very high molar mass propylene-based copolymers. Furthermore, the activity/productivity levels of catalysts comprising the metallocenes of the present invention are exceptionally high.

A metallocene compound with the 4- and 7-positions on the indenyl moiety possessing large aromatic substituents is prepared in accordance with a method which produces substantially 100 percent racemic isomer. Advantageously, polymerization catalysts including the metallocene of the invention provide superior olefin polymerization results.

Racemoselective synthesis of ansa-metallocene compounds, ansa-metallocene compounds, catalysts comprising them, process for producing an olefin polymer by use of the catalysts, and olefin homo- and copolymers

A high impact strength random block copolymer including (a) about 65-97 wt. % of a crystalline propylene/ethylene copolymer A containing from about 0.5 wt. % to about 6 wt. % derived from ethylene and from about 94 wt. % to about 99.5 wt. % derived from propylene, and (b) about 3-35 wt. % of a propylene/ethylene copolymer B containing from about 8 wt. % to about 40 wt % derived from ethylene and from about 60 wt % to about 92 wt. % derived from propylene. The crystalline to amorphous ratio Lc/La of the random block copolymer ranges from about 1.00 to about 2.25. The random block copolymer is characterized by both high toughness and low haze.

Supertransparent high impact strength random block copolymer

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Cincinnati, OH, United States of America

Anita Dimeska