Reliance Industries Limited

Mangesh Raghunath Sakhalkar

Pavankumar Aduri

Parasu Veera Uppara

Uday Meghashyam Ratnaparkhi

Viswanath Kotra

Vibhuti Dukhande

Parasuveera Uppara

Vivek Prabhakar Raje

Romal Ramkrushna Chafle

Gordhan Das Goyal

Vibhuti Dhukande

Suresh Iyengar

Rahul Mahadeo Dhawade

Rahul Kumbhar

Pavan Kumar Aduri

Prathmesh Pradeep Salvi

Veera Uppara Parasu

Aduri Pavankumar

The present disclosure relates to an ionic liquid composition and a process for its preparation. The process of the present disclosure is simple, single pot and efficient process for preparing the ionic liquid composition which is effective in a Friedel Craft reaction like, alkylation reaction, trans-alkylation, and acylation. The present disclosure envisages an ionic liquid composition comprising at least one metal hydroxide; at least one metal halide; and at least one solvent. Also envisaged is a process for preparing an ionic liquid composition. The process comprises mixing in a reaction vessel, at least one metal hydroxide and at least one metal halide in the presence of at least one solvent under a nitrogen atmosphere and continuous stirring followed by cooling under continuous stirring to obtain the ionic liquid composition.

Metal hydroxide based ionic liquid composition

The present disclosure relates to a process for preparing linear alkyl benzne (LAB). The process comprises alkylation of benzene with an alkylating agent in the presence of an ionic liquid to obtain a first product mixture comprising a first organic phase and a first aqueous phase comprising first partially spent ionic liquid. The first organic phase is deacidified and fractionally distilled to obtain a fraction comprising LAB and a fraction comprising HAB. The fraction comprising HAB is transalkylated with benzene in the presence of the ionic liquid to obtain a second product mixture comprising a second organic phase comprising LAB and a second aqueous phase comprising second partially spent ionic liquid. The partially spent ionic liquids are regenerated, and reused in the steps of alkylation or transalkylation for at least 6 cycles.

Process for preparing linear alkyl benzene

The present disclosure provides an ionic liquid compound of Formula (I) and its application in reactions such as alkylation, arylation, acylation, diels alder and oligomerization,  The present disclosure also provides a process for preparing the ionic liquid compound of Formula (I) which involves preparing an ionic salt complex represented by Formula [(NRRR)M][X]by mixing an amine represented by Formula NRRRand a metal salt represented by formula MX; and mixing the ionic salt complex and a metal salt represented by formula MYto obtain the ionic liquid compound.

Ionic liquid compound

The present disclosure provides a process for regenerating the deactivated ionic compound. The process involves mixing a deactivated ionic compound with at least one solvent such as ethyl acetate and neutralizing with at least one base such as triethylamine and tert-butyl amine to obtain a precipitate. The obtained precipitate is filtered to obtain a residue which is then washed with a solvent such as dichloromethane to obtain the ionic compound.

Process for regenerating ionic compound

A process for preparing alditol Acetals via a dehydrocondensation reaction is disclosed. The reaction is carried out by adding an aldehyde and an aldiol using a metal salt based ionic liquid as an acid catalyst. The ionic liquid used in the process is prepared by dissolving a hydrogen donor and a compound providing counter ion in a solvent.

Process for preparing alditol acetals

A method for preparing an ionic compound by mixing at least one compound of formula CA-zHO (1) with at least one hydrogen donor and heating the mixture obtained is provided. The said ionic compound remains in a physical state selected from the group consisting of liquid and semisolid at a temperature below 150&#xb0; C., preferably below 125&#xb0; C.

Ionic fluids

A process for the preparation of 1,3:2,4-bis(4-methylbenzylidene)sorbitol (MDBS) and 1,3:2,4-bis(3,4-dimethylbenzylidene)sorbitol (DMDBS) via a dehydrocondensation reaction is disclosed. The reaction is carried out between an aldehyde and an alditol in a mole ratio of 2:1 wherein ionic fluid is used as the acidic catalyst and/or reaction medium. The ionic fluid used in accordance with the present invention is quaternary ammonium salt based ionic liquid.

Process for preparation of acetals

This invention is directed to a process for preparation of acetal derivatives, 1,3:2,4-bis(3,4-dimethylbenzylidene)sorbitol (DMDBS) and 1,3:2,4-bis(4-methylbenzylidene)sorbitol (MDBS) by carrying out a dehydrocondensation reaction between an aldehyde and an alditol using an aqueous ionic fluid as the acid catalyst.

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Panvel, India

Mangesh Raghunath Sakhalkar