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Melanie Muron

Roger Spitz

Sergio Mastroianni

Jean-Louis Chamayou

Christophe Boisson

Grant Berent Jacobsen

Claudine Viviane Lalanne-Magne

Gaelle Pannier

Eric Nicolas Vincent Osmont

Christopher John Whiteoak

Activating supports may be suitably prepared by the following procedure (a) providing a porous mineral oxide support material, (b) treating the support with a phosphorus-containing compound, (c) treating the support from step (b) with an organometallic compound, (d) heating the functionalized support from step (c) under an inert gas and then under an atmosphere comprising oxygen, (e) fluorinating the support with a fluorinating agent, and (f) recovering an activating support. The activating supports are suitable used in combination with single site catalysts for the polymerization of olefins. The supports are most preferably used in combination with metallocene complexes. The preparative route for the activating supports provides for supported polymerization catalyst systems having excellent activities.

Activating supports

Method for the preparation of a blown film containing 300-600 gels/mof size in the range 100-2000 &#x3bc;m as measured by an optical control system, in which the film is derived by extrusion from an ethylene-&#x3b1;-olefin copolymer. The method is carried out by preparing the copolymer in a particle forming polymerization process in the presence of a single site catalyst system containing a single site catalyst, a cocatalyst, and a support material.

Polymer films

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Melanie Muron