METHOD FOR SULFONATING ACYLOXYBENZENES AND NEUTRALIZATION OFRESULTING PRODUCT

A method is provided for sulfonating an acyloxy substituted benzene ring to obtain high yields of desired sulfonated compounds that are useful as cleaning, bleaching, or fabric treating additives. A particularly preferred additive so prepared has the structure where R7 is a branched or unbranched al...

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Hauptverfasser: ZIELSKE, ALFRED G, THOMPSON, SUZANNE, BRODBECK, KEVIN J, KUHNER, LISA M, SINISI, LEONARDO, MARTIN, GREGORY T, OTTOBONI, THOMAS B, SPILLETT, CRIS T, STEICHEN, DALE S
Format: Patent
Sprache:eng ; fre
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Zusammenfassung:A method is provided for sulfonating an acyloxy substituted benzene ring to obtain high yields of desired sulfonated compounds that are useful as cleaning, bleaching, or fabric treating additives. A particularly preferred additive so prepared has the structure where R7 is a branched or unbranched alkyl with about 5 to 9 carbons and M is an alkali metal, an alkaline earth metal, or ammonium. The benzene ring is sulfonated by contacting with a molar excess of sulfur trioxide source and then irreversibly reacting the sulfur trioxide excess with a quenching agent. A neutralization process for preparing peracid precursors in high yield by neutralizing sulfonated aryl esters is also provided.