Preparation of alkali metal and alkaline earth metal salts of acyloxybenzenesulfonic acids
CA 1233481 A · Owner: Basf Aktiengesellschaft · Inventors: Perner, Johannes; Balzer, Wolf-Dieter; Widder, Rudi
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Alkali metal and alkaline earth metal salts of acyloxybenzenesulfonic acids of the formula I, where R is a saturated or unsaturated alkyl radical of 1 to 17 carbon atoms or is phenyl which is unsubstituted or monosubstituted or disubstituted by alkyl of 1 to 3 carbon atoms, halogen, methoxy or nitro, are prepared by neutralization, by a method in which a liquid acyloxybenzenesulfonic acid of the formula I and an aqueous solution of an alkali metal or alkaline earth metal hydroxide, carbonate or bicarbonate are combined in water at from 0 to 60°C and while mixing thoroughly so that, the pH is kept at from 2.5 to 7.0 and, if desired, the, resulting salt is isolated from the aqueous solution …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
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- Granted March 1, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 1, 2005.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.