Total Petrochemicals Research Feluy

Centre National De La Recherche Scientifique

Fina Technology, Inc.

Total Research & Technology Feluy

Centre National De La Recherche Scientifique (cnrs) Etablissement Public

Evgueni Kirillov

Abbas Razavi

Jean-François Carpentier

Nicolas Marquet

Olivier Lhost

Christian Lamotte

Jean-françois Carpentier

Manuela Bader

Katty Den Dauw

Jean-Franøois Carpentier

Anne-Sophie Rodrigues

Christophe Thomas

A process for preparing a long chain branched polypropylene in presence of two metallocene-based active catalyst systems is provided. The polypropylene obtained therefrom has new molecular architecture and improved elasticity properties. The polypropylene is further characterized by new signals in itsC NMR spectrum.

Long chain branched polypropylene

The present invention relates to the field of group 4 post-metallocene complexes based on sterically encumbered bis(naphthoxy)pyridine and bis(naphthoxy)thiophene ligands. It also relates to the use of such post-metallocene complexes in the polymerization of ethylene and alpha-olefins.

Post-metallocene complexes based on bis(naphthoxy)pyridine and bis(naphthoxy)thiophene ligands for the polymerisation of ethylene and alpha-olefins

The present invention discloses post-metallocene complexes based on sterically encumbered bi- and tri-dentate naphthoxy-imine ligands. It also relates to the use of such post-metallocene complexes in the oligomerization of ethylene to selectively prepare vinyl-end capped linear alpha-olefins.

Sterically emcumbered bidentate and tridentate naphthoxy-imine metallic complexes

The present invention discloses a method for preparing long-chain-branched isotactic polypropylene by first oligomerizing propylene with a suitable oligomerization catalyst system and then copolymerizing propylene and the oligomer obtained in situ with a mono-aryl-substituted methylene bridged catalyst system.

Preparation of long-chain branched isotactic polypropylene

The present invention relates to the use of group 3 post-metallocene complexes based on sterically encumbered bis(naphthoxy)pyridine and bis(naphthoxy)thiophene ligands in the ring-opening polymerisation of polar monomers such as, for examples, lactones, lactides, cyclic carbonates.

Group 3 post-metallocene complexes based on bis(naphthoxy)pyridine and bis(naphthoxy)thiophene ligands for the ring-opening polymerisation of polar cyclic monomers

This invention relates to fluorinated alkoxy-imino metallic complexes and their use in catalyst systems for the polymerisation or oligomerisation of ethylene and alpha-olefins.

Fluorinated alkoxy-imino catalyst components

The present invention discloses a metallocene catalyst component based on a Group IIIb metal of the periodic Table and a bridged heteroatom-fluorenyl ligand. It also discloses its method of preparation and its use in polymerisation.

Group IIIb metal complexes with 'constrained geometry' fluorenyl based ligands

The present invention discloses a metallocene catalyst component of the formula (I) [(Flu-R&#x2033;-Cp)M][Li(ether)], wherein Cp is a cyclopentadienyl, substituted or unsubstituted, Flu is a fluorenyl, substituted or unsubstitutted, M is a metal Group III of the Periodic Table, and R&#x2033; is a structural bridge between Cp and Flu imparting stereorigidity to the component. It further discloses a process for preparing said metallocene catalyst component and its use in controlled polymerisation.

Group III bridged ionic metallocene based on cyclopentadienyl-fluorenyl ligands

The present invention discloses a metallocene catalyst component of formula (Flu-R&#x2033;-Cp)M(&#x3b7;-CR')(ether)(I) wherein Cp is a cyclopentadienyl, substituted or unsubstituted, Flu is a fluorenyl, substituted or unsubstitutted, R&#x2033; is a structural bridge between Cp and Flu imparting stereorigidity to the component, M is a metal Group III of the Periodic Table, each R&#x2032; is the same or different and is hydrogen or a hydrocarbyl having from 1 to 20 carbon atoms and n is 0, 1 or 2. It further discloses a process for preparing said catalyst component and its used in the controlled polymerisation of polar or non polar monomers.

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Rennes, France

Evgueni Kirillov