Saudi Basic Industries Corporation

Sabic Global Technologies B.v.

Mansour Taftaf

Jaiprakash Brijlal Sainani

Aurora Alexandra Batinas-Geurts

Gennadii Dimitrievich Bukatov

Martin Alexander Zuideveld

Vladimir Aleksandrovich Zakharov

Sergei Andreevich Sergeev

Vimalkumar Mahendrabhai Patel

Shirish Shrikant Abhyankar

Nourdin Ghalit

Abderrahman Meddad

Khalid Abdullah Al-Bahily

Osamah Al-Humaidan

Hesham Al-Shobilly

The present invention relates to a procatalyst comprising the compound represented by Formula (A), preferably the Fischer projection of formula (A) as an internal electron donor. The invention also relates to a process for preparing said procatalyst. Furthermore, the invention is directed to a catalyst system for polymerization of olefins comprising the said procatalyst, a co-catalyst and optionally an external electron donor; a process of making polyolefins by contacting at least one olefin with said catalyst system and to polyolefins obtainable by said process. The invention also relates to the use of said procatalyst in the polymerization of olefins. Moreover, the present invention relates to polymers obtained by polymerization using said procatalyst and to the shaped articles of said polymers. 

Procatalyst for polymerization of olefins

The present invention relates to a process for preparing a catalyst component for polymerization of an olefin comprising the steps of: i) contacting a compound RMgXwherein Ris aromatic, aliphatic or cyclo-aliphatic group containing up to 20 carbon atoms, X is a halide, and z is in a range of larger than 0 and smaller than 2, with an alkoxy- or aryloxy-containing silane compound to given a first intermediate reaction product; ii) contacting the first intermediate reaction product with at least one activating compound selected from the group formed by electron donors and compounds of formula M(OR)(OR), wherein M can be Ti, Zr, Hf, Al or Si, and M(OR)(R), wherein M is Si, each Rand R, independently, represent an alkyl, alkenyl or aryl group, v is the valency of M, v being either 3 or 4, and w is smaller than v, to give a second intermediate reaction product; and iii) contacting the second intermediate reaction product with a halogen-containing Ti-compound, a monoester as activating agent, a 1,3-diether as an internal electron donor, and optionally a diester as an additional internal electron donor.

Process for preparing a catalyst component for polymerization of olefins

The invention relates to a process for the preparation of polypropylene having &#x2014;a molecular weight (Mw) of 450,000-950,000, &#x2014;a molecular weight distribution of 3-6, &#x2014;a melt flow in the range of 7-14 dg/min measured with a load of 21.6 kg at 230&#xb0; C. or 0.05-2 dg/min measured with a load of 2.16 kg at 230&#xb0; C. and &#x2014;a xylene soluble content of 2-6 wt % by converting propylene into the polypropylene without pre-polymerization in the presence of a polymerization catalyst under a condition where the volume ratio of H2 to propylene is at most 0.0020, wherein the catalyst comprises a catalyst component, a co-catalyst and an external donor, wherein the catalyst component is obtained by a process wherein a compound with formula Mg(OAlk)xCly wherein x is larger than 0 and smaller than 2, y equals 2&#x2212;x and each Alk, independently, represents an alkyl group, is contacted with a titanium tetraalkoxide and/or an alcohol in the presence of an inert dispersant to give an intermediate reaction product and wherein the intermediate reaction product is contacted with titanium tetrachloride in the presence of an internal donor, and wherein the molar ratio of the co-catalyst to the external donor is 3.3-5.2, preferably 3.8-4.4.

Process for the polymerization of propylene

A catalyst composition including the compound of Formula I as an internal electron donor, 

Catalyst composition for polymerization of olefins

The present invention relates to a procatalyst comprising the compound represented by formula A as an internal electron donor, wherein: R, R, R, R, R, and Rare the same or different and are independently selected from a group consisting of hydrogen or a straight, branched and cyclic hydrocarbyl group, selected from alkyl, alkenyl, aryl, aralkyl or alkylaryl groups, and one or more combinations thereof, preferably having 1 to 20 carbon atoms; Ris a hydrogen or a linear, branched or cyclic hydrocarbyl group, selected from alkyl, alkenyl, aryl, aralkyl, alkoxycarbonyl or alkylaryl groups, and one or more combinations thereof, preferably having from 1 to 20 carbon atoms; and each Rgroup is independently a linear, branched or cyclic hydrocarbyl group selected from alkyl, alkenyl, aryl, aralkyl, or alkylaryl groups, and one or more combinations thereof, preferably having from 1 to 30 carbon atoms; N is nitrogen atom; O is oxygen atom; and C is carbon atom. The present invention also relates to a process for preparing said polymerization procatalyst and to a polymerization catalyst system comprising said procatalyst, a cocatalyst and optionally an external electron donor. Furthermore, the present invention relates to a polyolefin obtainable by the process according to the present invention and to the use of the compound of formula A as in internal electron donor in catalysts for polymerization of olefins. 

A catalyst composition comprising a monoester, the compound represented by formula (I) as an internal electron donor, and optionally an additional internal electron donor selected from a group consisting of diesters and diethers, wherein: R, R, R, R, Rand Rare hydrogen, straight, branched and cyclic alkyl having at most 20 carbon atoms and aromatic substituted and unsubstituted hydrocarbyl having 6 to 20 carbon atoms, Ris a straight, branched and cyclic alkyl having at most 20 carbon atoms and aromatic substituted and unsubstituted hydrocarbyl having 6 to 20 carbon atoms, and Ris an aromatic substituted and unsubstituted hydrocarbyl having 6 to 20 carbon atoms. Also described is a process for preparing the polymerization catalyst composition, a polymerization catalyst system comprising the catalyst composition, a co-catalyst and optionally an external electron donor; and use of the catalyst system for polymerization of olefins.

The present invention relates to a catalyst component for polymerization of an olefin comprising a compound represented by the Fischer projection of: wherein Ris substituted or unsubstituted hydrocarbyl having 1 to 20 carbon atoms; Rand Rare different and independently selected from the group consisting of hydrogen, halogen and substituted or unsubstituted hydrocarbyl having 1 to 20 carbon atoms; R-Roptionally containing one or more hetero-atoms replacing one or more carbon atoms, one or more hydrogen atom or both, wherein said hetero-atom is selected from the group consisting of nitrogen, oxygen, sulfur, silicon, phosphorus and halogen; and wherein the compound of Formula (I) is the only internal electron donor in the catalyst component. The present invention also relates to a process for preparing a polymerization catalyst component comprising the steps of i) contacting a compound RMgXwherein Ris aromatic, aliphatic or cyclo-aliphatic group containing 1 to 20 carbon atoms, X is a halide, and z is in a range of larger than 0 and smaller than 2, with an alkoxy- or aryloxy-containing silane compound to give a first intermediate reaction product; ii) contacting the first intermediate reaction product with at least one activating compound selected from the group formed by internal electron donors and compounds of formula M(OR)(R), wherein M can be Ti, Zr, Hf, Al or Si, each Rand R, independently, represent an alkyl, alkenyl or aryl group, v is the valency of M and w is smaller than v and iii) contacting the second intermediate reaction product with a halogen-containing Ti-compound and an internal electron donor represented by the Fischer projection of formula (I); and optionally with at least one compound selected from a group comprising a monoester, a diester and a 1,3-diether. 

Catalyst component for the polymerization of olefins

A process for preparing a catalyst component, including:

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Peninsula, OH, United States of America

Mansour Taftaf