Reliance Industries Limited

Gordhan Das Goyal

Pavankumar Aduri

Mangesh Raghunath Sakhalkar

Uday Meghashyam Ratnaparkhi

Pradip Munshi

Ninad Deepak Ingle

Rakshvir Jasra

Parasuveera Uppara

Viswanath Kotra

Sunil Peter

Romal Ramkrushna Chafle

Vibhuti Dhukande

Rahul Kumbhar

Santosh Agrawal

Suresh Iyengar

Uttam Maity

Vriti Singh

Rahul Mahadeo Dhawade

Vishal Bhupendrakumar Shah

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 effective and efficient process for the preparation of a dry chlorinated polyvinyl chloride (CPVC), comprising introducing chlorine gas into slurry of polyvinyl chloride in water to obtain a reaction mixture; irradiating the reaction mixture to obtain a product mixture comprising CPVC and water solution including unreacted chlorine gas and hydrogen chloride; filtering the product mixture to obtain a first mass; adding water to the first mass for extracting unreacted chlorine gas and hydrogen chloride to obtain an aqueous suspension, and filtering the aqueous suspension to obtain a second mass; passing nitrogen through the second mass to extract residual water solution to leave behind a third mass; and agitating the third mass in a high-speed mixer together with a neutralizing agent, and optionally with a stabilizer and a processing additive to obtain dry thermally stable CPVC with thermal stability in the range of 1000 seconds to 1500 seconds.

Process for the preparation of dry chlorinated polyvinyl chloride

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Mumbai, India

Gordhan Das Goyal