Council of Scientific and Industrial Research

Shrikant Madhukar Ghike

Prashant Purushottam Barve

Ravindra William Shinde

Milind Yashwant Gupte

Chandrashekhar Narayan Joshi

Sunil Shankar Joshi

Raghavendra Venkatrao Naik

Rajendra Anantrao Kulkarni

Aruna Narayan Bote

Ravindra William c/o Anil D Kulkami Irp Co-Ordinator Shinde

Process for recovery of highly pure acrylonitrile by quickly vaporizing under vacuum the contaminated acrylonitrile as well as fresh acrylonitrile followed by contacting with hydrophilic agents in an extractive distillation column using plural number of packed sections.

Process for recovery of pure acrylonitrile

The present invention provides a process for the preparation of highly pure 2-Methyl-2-propene-1-sulfonic acid, sodium salt in high yield, with very low iron content, by the reaction of distilled sulfur trioxide complexed with a Lewis base in a halogentated solvent, the unreacted sulfur trioxide vapors being removed from the reactor before the mixture is treated with liquefied isobutylene, and neutralization by a base with an iron content within the range of 0 to 20 ppm.

Process for the preparation of 2-Methyl-2-propene-1-sulfonic acid, sodium salt

The present invention provides a process for the preparation of highly pure 2-acrylamido-2-methyl-1-propanesulfonic acid in high yield, with improved appearance, by the reaction of acrylonitrile with more than 98% sulfuric acid or oleum and liquefied isobutylene in presence of weak inorganic acids or organic sulfonic acids.

Process for the preparation of 2-acrylamido-2-methyl-1-propanesulfonic acid

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Maharashtra, India

Shrikant Madhukar Ghike