Process for the preparation of 2-acrylamido-2-methyl-1-propanesulfonic acid
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United States of America Patent
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Jan 7, 2003
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app pub date -
Mar 13, 2002
filing date -
Mar 13, 2002
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Abstract
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.
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