Sabic Global Technologies B.v.

Shirish Shrikant Abhyankar

Jaiprakash Brijlal Sainani

Martin Alexander Zuideveld

Aurora Alexandra Batinas-Geurts

Gennadii Dimitrievich Bukatov

Mansour Taftaf

Vladimir Aleksandrovich Zakharov

Sergei Andreevich Sergeev

Khalid Abdullah Al-Bahily

Osamah Al-Humaidan

Abbas-Alli Ghudubhai Shaikh

Sivalingam Gunasekaran

The present invention relates to a process for synthesis of a compound according to Formula (A): wherein Ris a substituted or unsubstituted aryl having 6 to 20 carbon atoms; preferably substituted or unsubstituted phenyl; Ris a straight or branched alkyl having 1 to 12 carbon atoms; and Ris a straight or branched alkyl having 1 to 12 carbon atoms; starting from a di-keto compound according to Formula (B) wherein Ris as shown above, which compound is converted into a ketoenamine compound according to Formula (C) wherein Rand Rare as shown above, which ketoenamine compound is then reduced to an amino alcohol according to Formula (D), wherein Rand Rare as shown above, that is subsequently converted into a compound according to Formula (A): characterized in that the ketoenamine is reduced into an amino alcohol using a nickel aluminium alloy in an aqueous solution of an inorganic base. 

Synthesis method for the preparation of dibenzoate compounds, such as 4-[benzoyl(methyl)amino]pentane-2-yl dibenzoate

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 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. 

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Bengaluru, India

Shirish Shrikant Abhyankar