Saudi Basic Industries Corporation

Sabic Basic Industries Corporation

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Akhlaq A Moman

Atieh Abu-Raqabah

Syriac J Palackal

Orass M Hamed

Mansour Izzat Taftaf

John Ledford

Atieh Abu Raqabah

Abdul Wahab Al-S&aacute;doun

The present invention relates to a catalyst composition for homopolymerization or copolymerization of olefins comprising: (a) a solid catalyst precursor comprising a transition metal compound of group IVB, VB, or VIB of the periodic table, a magnesium compound and aliphatic polyketone particles; and (b) a cocatalyst comprising an aluminum alkyl, an aluminoxane or mixtures thereof; and a process for homopolymerisation or copolymerisation of olefins.

Catalyst composition for polymerization of olefins and process using the composition

The invention relates to an improved olefin catalyst, a method of in situ-activated catalyst preparation and a process for the polymerization of olefinic monomers via, for example, a titanium trichloride/magnesium dichloride/tetrahydrofuran reaction product catalyst precursor. The activated catalyst is prepared in situ in a polymerization reactor using an alumoxane based co-catalyst wherein the cumbersome traditional steps of catalyst activation and isolation, prior to polymerization are eliminated. An unexpected advantage of this invention is a significant increase in catalyst productivity while maintaining a relatively constant value of the bulk density of polymeric materials produced while concomitantly producing a polymeric product having a broad molecular weight distribution compared with typical alumoxane-activated metallocene catalysts.

Alumoxane-enhanced, supported Ziegler-Natta catalysts, methods of making same, processes of using same and polymers produced therefrom

A catalyst composition for alpha olefin polymerization is provided. The catalyst composition is prepared by a process including treating PVC containing particles with an organomagnesium compound in an inert solvent, contacting the treated PVC containing particles with a transition metal compound from the group TiCl , VCl or ZrCl , in the absence of an electron donor, and activating the product particles with a cocatalyst. An organoaluminum compound can also be mixed with the organomagnesium compound prior to treating the PVC containing particles.

Highly active, supported ziegler-natta catalyst systems for olefin polymerization, methods of making and using the same

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Riyadh, Saudi Arabia

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