Indian Oil Corporation Limited

Sukhdeep Kaur

Gurpreet Singh Kapur

Gurmeet Singh

Naresh Kumar

Bhasker Bantu

Ravinder Kumar Malhotra

Shashi Kant

Biswajit Basu

Rashmi Rani

Sankara Sri Venkata Ramakumar

Shashikant

Anju Chopra

Mohasin Momin

Dheer Singh

Usharani Sahoo

Jarmo Lindroos

Deepak Saxena

Mahender Singh Negi

Shobhashankar Kumhar

Mahendra Singh Negi

Jai Narayan Pandey

Naresh Pappu

Svein Nenseth

Yajnaseni Biswas

Sankara Ramakumar

Rashimi Rani

The present disclosure relates to a process for producing linear alpha olefins in high yield carried out by oligomerization of ethylene in the presence of a novel catalyst composition. The catalyst composition includes Zirconium compound, an organoaluminum compound, and at least one Lewis base selected from cyclic and acyclic ethers (i.e., di-n-butyl ether and diethyl ether). The process for oligomerization of ethylene is carried out in an inert organic solvent in the presence of said catalyst composition. The process as disclosed herein provides significantly high activity of the said catalyst composition resulting in high yield of the alpha olefins (>95 wt. %) as the product and significantly minimum polymer as by-product. The process provides higher yield of C6-C10 fraction with >60 wt. %.

Process and catalyst composition for producing linear alpha olefins in high yield by ethylene oligomerization

The present invention relates to a process for producing ultrahigh molecular weight polymer in powder form which is highly efficient drag reducing polymer. The process consists of polymerizing using titanium halide-based catalyst, co-catalyst, optionally a solvent, and monomer to a polymerization reactor, having stirring device and inlet charging and discharge outlet. The resulting ultrahigh molecular weight drag reducing polymers is free flowing, having intrinsic viscosity >10 dL/g. The process reduces polymerization time, temperature, and achieves high conversion, i.e., >90%.

Process for producing ultrahigh molecular weight polymer in powder form

The present invention relates to a process for preparation of a catalyst for polymerization of olefins. The catalyst has a particle size of between 5 to 30 microns with activity ranging from 3-4 Kg (co)polymer per g of catalyst and excellent hydrogen response. The method for preparation of the catalyst comprises the steps of: a) contacting a liquid magnesium complex, an electron donor, and a titanium halide compound to form a solution; b) obtaining the solid uniform catalyst particles by precipitation; and c) washing the catalyst particles to obtain solid uniform catalyst., for producing (co)polymer of ethylene with other olefins have fines less than 10 wt. %.

Process for preparation of a catalyst for polymerization of olefins

The invention relates to a method of the oligomerization of C6 and above olefin monomer whereby, at a fixed monomer/Al halide mole ratio, polyalphaolefins having desirable kinematic viscosities are prepared by controlling the oligomerization temperature. The oligomerization is carried out in presence of an oligomerizing catalyst comprising of aluminum halide and a promoter, and oligomerizing temperatures of about 10&#xb0; C. to about 120&#xb0; C.

Method of controlling kinematic viscosity of polyalphaolefin

The present invention describes a catalyst composition for use as a catalyst system for an ethylene oligomerization, providing high activity and produce linear oligomer product having broad weight percent distribution i.e. Cto C. The catalyst composition comprises a zirconium amide compound, an organoaluminum compound and an additive. The present invention also provides a process for preparation of the zirconium amide compound comprising reacting a zirconium component having formula ZrX.nTHF, wherein X is halogen atom; m is an integer having value equal or less than 4 and n is a number equal or less than 2, and a substituted amide of formula RCONR'R&#x2033;, wherein R, R&#x2032; and R&#x2033; are saturated or unsaturated aliphatic C-Chydrocarbon or aromatic C-Chydrocarbon, in the presence of an organic solvent.

Process for preparation of ethylene oligomerization catalyst and oligomerization thereof

The present invention provides an external electron donor composition comprising essentially of monoether as activity limiting agent for polymerization of olefins along with alkoxy silane as selectivity controlling agent, wherein mole percentage of the alkoxy silane to monoether is from 1 to 100.

External donor for olefin polymerization

The present invention provides a solid organomagnesium precursor having formula {Mg(OR')X}.a{MgX}.b{Mg(OR&#x2032;)}.c{R&#x2032;OH}, wherein R&#x2032; is selected from a hydrocarbon group, X is selected from a halide group, and a:b:c is in range of 0.01-0.5:0.01-0.5:0.01-5 and process for preparing the same, said process comprising contacting a magnesium source with a solvating agent, an organohalide and an alcohol to obtain the solid organomagnesium precursor. The present invention also provides a process for preparing a catalyst system using the organomagnesium precursor and its use thereof for polymerization of olefins.

Organometallic compound in solid form, process for preparing the same and use thereof

The present invention relates to a process for preparing ultra-high molecular weight polyalphaolefin. The process consists of polymerizing alphaolefin monomers using the catalyst system consisting of supported Ziegler-Natta catalyst without internal donor in presence of co-catalyst based on alkyl aluminums. The resulting ultra-high molecular weight polyalphaolefins having intrinsic viscosity &#x2265;10 dL/g are used as drag reducing polymers for increasing throughput in the pipelines by reducing frictional resistance in turbulent flow.

Process of preparation of drag reducing polymers and usage thereof

A catalyst composition for use as precursor for Ziegler-Natta catalyst system, said catalyst composition comprising a combination of magnesium moiety, titanium moiety and an internal donor containing at least one 1,2-phenylenedioate compound of structure (A). Also, the present invention provides a process for preparing the aforesaid catalyst composition. Further, the present invention provides a Ziegler-Natta catalyst system incorporating the aforesaid catalyst composition and a method for polymerizing and/or copolymerizing olefins using the Ziegler-Natta catalyst system. 

Ziegler-natta catalyst systems comprising a 1,2-phenylenedioate as internal donor and process for preparing the same

The present invention describes a process of preparing a catalyst for olefin polymerization comprising: (i) treating a magnesium metal with an organohalide along with an internal donor to obtain a reaction mixture having solid component (A); (ii) treating the reaction mixture having solid component (A) with an acyl halide to obtain a reaction mixture having solid component (B); and (iii) treating the reaction mixture having solid component (B) of step (ii) with a transition metal compound to obtain the catalyst. The present invention also relates to a process for preparation of a catalyst system from said catalyst and preparation of a polyolefins from the catalyst system.

Ziegler-Natta catalyst synthesis and process thereof

The present invention provides a liquid organomagnesium precursor having formula {Mg(OR')X}.a{MgX}.b{Mg(OR&#x2032;)}.c{R&#x2032;OH}, wherein R&#x2032; is selected from a hydrocarbon group, X is selected from a halide group, and a:b:c is in range of 0.1-99.8:0.1-99.8:0.1-99.8, and a process for preparing the same. The said process comprises contacting a magnesium source with an organohalide and alcohol in a solvent to form the liquid organomagnesium precursor. The present invention also provides a catalyst system using the organomagnesium precursor and its use thereof for polymerization of olefins. An illustrative example of the claimed process to make the organomagnesium precursor is: At 25&#xb0; C., magnesium (powder or turnings) is added to organohalide, followed by alcohol in toluene. After heating to 90&#xb0; C. and keeping there for 6 h the solution became viscous.

Precursor for catalyst, process for preparing the same and its use thereof

The present invention describes a process for preparation of catalyst component comprising contacting magnesium based precursor along with an internal donor based on phenylene dioates with an acyl halides in a solvent to obtain a solid precatalyst component; and contacting the solid precatalyst component with transition metal compound to obtain the catalyst component. The present invention also relates to a process for preparation of a catalyst system from said catalyst component and preparation of a polyolefins having free flowing characteristics with bulk densities (BD) of at least about 0.3 g/cc from the catalyst system.

Catalyst process modification and polymerization thereof

The present invention describes a process for preparing catalyst for the polymerization of ethylene consisting essentially of the steps of (i) contacting a magnesium based precursor with a solvent; and (ii) then contacting the magnesium based precursor in the solvent with a transition metal compound to obtain the catalyst, wherein step (ii) is single contact step. The present invention also relates to a process for preparation of a catalyst system and a process of polymerizing and/or copolymerizing of ethylene to obtain a polyethylene using the catalyst.

Catalyst for olefin polymerization and polymerization thereof

The present invention provides a process for preparation of a solid titanium catalyst component for use as pro-catalyst for a Ziegler-Natta catalyst system. The solid titanium catalyst component comprises a combination of 15 to 20 wt % of a magnesium moiety, 1.0 to 6.0 wt % of a titanium moiety and 5.0 to 20 wt % of an internal donor, said solid titanium catalyst component has an average particle size in the range of 1 to 100 &#x3bc;m, characterized by a three point particle size distribution of D10 in the range of 1 to 10 &#x3bc;m; D50 in the range of to 25 &#x3bc;m and D90 in the range of 15 to 50 &#x3bc;m. The present invention also provides a 15 Ziegler-Natta catalyst system comprising the solid titanium catalyst component and the method of polymerizing and/or copolymerizing olefins by using the Ziegler-Natta catalyst system.

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Faridabad, India

Sukhdeep Kaur