IMPROVED NEUTRALIZATION OF ISOPHORONENITRILE SYNTHESIS EFFLUENTS

THE PRESENT INVENTION RELATES TO A PROCESS FOR PREPARING 3-CYANO-3,5,5-TRIMETHYLCYCLOHEXANONE (ISOPHORONENITRILE) BY REACTING ISOPHORONE WITH HYDROGEN CYANIDE IN THE PRESENCE OF A BASE AS A CATALYST TO OBTAIN A CRUDE ISOPHORONENITRILE PRODUCT, AND SUBSEQUENTLY DISTILLING THE CRUDE ISOPHORONENITRILE...

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Bibliographische Detailangaben
Hauptverfasser:	GEROLD BRAUN, ALFRED OFTRING
Format:	Patent
Sprache:	eng
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS CHEMISTRY METALLURGY ORGANIC CHEMISTRY
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Zusammenfassung:	THE PRESENT INVENTION RELATES TO A PROCESS FOR PREPARING 3-CYANO-3,5,5-TRIMETHYLCYCLOHEXANONE (ISOPHORONENITRILE) BY REACTING ISOPHORONE WITH HYDROGEN CYANIDE IN THE PRESENCE OF A BASE AS A CATALYST TO OBTAIN A CRUDE ISOPHORONENITRILE PRODUCT, AND SUBSEQUENTLY DISTILLING THE CRUDE ISOPHORONENITRILE PRODUCT, WITH THE ADDITION BEFORE DISTILLATION OF AT LEAST ONE SPECIFIC SULFONIC ACID OR SPECIFIC CARBOXYLIC ACID. IN ADDITION, THE PRESENT INVENTION RELATES TO THE USE OF A SPECIFIC SULFONIC ACID OR OF A SPECIFIC CARBOXYLIC ACID AS A NEUTRALIZING AGENT BEFORE DISTILLATION OF A CRUDE ISOPHORONENITRILE PRODUCT WHICH HAS BEEN OBTAINED BY REACTING ISOPHORONE WITH HYDROGEN CYANIDE IN THE PRESENCE OF A BASE AS A CATALYST, IN ORDER TO AVOID PRECIPITATES IN THE NEUTRALIZATION OF THE BASE USED AS A CATALYST WITH AN ACID.