Patents

US6504050: Process for the preparation of 2-acrylamido-2-methyl-1-propanesulfonic acid

The 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.

Filing Date: 13-03-2002

Issue Date: 07-01-2003

Applicant: CSIR-National Chemical Laboratory (CSIR-NCL), Pune

Patent No: US6504050

Application No: 10/096070

Inventor(s): Prashant Purushottam Barve; Sunil Shankar Joshi; Ravindra William Shinde; Milindyashwant Gupte; Chandrashekhar Narayan Joshi; Shrikant Madhukar Ghike; Raghavendra Venkatrao Naik; Rajendra Anantrao Kulkarni; Aruna Narayan Bote

IPC Classification: C07C309/00

Country: United States of America

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