Council of Scientific and Industrial Research

Raghavendra Venkatrao Naik

Prashant Purushottam Barve

Ravindra William Shinde

Milind Yashwant Gupte

Chandrashekhar Narayan Joshi

Shrikant Madhukar Ghike

Sunil Shankar Joshi

Rajendra Anantrao Kulkarni

Aruna Narayan Bote

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

Raghavendra Venkatrao Naik