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US 2003/0070928 A1Published application
Process for preparing salts of methallylsulfonic acid
AssigneeOxeno Olefinchemie GmbH
InventorsClaus York Werninger, Lothar Kerker, Hartmut Steinbeisser, Wilfried Bueschken, Franz-Felix Kuppinger, Peter Ernst Esser
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Abstract
A process for preparing salts of methallylsulfonic acid in which the reaction mixture produced from the sulfonation is diluted with water and neutralized with a base.
Claims22
A process for preparing salts of methallylsulfonic acid, which comprises:
- (a) sulfonating isobutene with a sulfur trioxide-Lewis base complex at a temperature of from −20 to 80° C. and a pressure of from 1 to 15 bar,
- (b) diluting the reaction mixture from (a) with water,
- (c) neutralizing the diluted reaction mixture from (b) to a pH of 6-8 with a base, and
- (d) isolating the salt of methallylsulfonic acid from the neutralized reaction mixture from (c).
1 more element
Dependencies are inferred from the claim text.