Process for the preparation of 1,2-benzisothiazolin-3-ones
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United States of America Patent
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Aug 19, 2003
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N/A
app pub date -
Apr 26, 1999
filing date -
Mar 17, 1995
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Abstract
A process for making a 2-alkylbenzisothiazolinone which comprises reacting a bisamide of formula ##STR1## in water or an organic liquid containing water with a bisulphite or bisulphite release agent to form a Bunte salt and converting the Bunte salt under alkaline conditions to 2-alkyl-BIT. R is alkyl. Preferred substituents R are butyl, hexyl, 2-ethylbutyl and 2-ethylhexyl.
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