Method for the production of diaminoxylene

The invention relates to a method for producing xylylenediamine, comprising the following steps: ammonoxidation of xylol to form phthalodinitrile and hydrogenation of the phthalodinitrile, whereby the vaporous product of the ammonoxidation stage is directly brought into contact with a liquid organic...

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Bibliographic Details
Main Author HUGO RANDOLF,WENZ KIRSTEN,WAMBSGANSS ROLF,JOURDANSABINE,PREISS THOMAS
Format Patent
LanguageEnglish
Published 18.10.2006
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Summary:The invention relates to a method for producing xylylenediamine, comprising the following steps: ammonoxidation of xylol to form phthalodinitrile and hydrogenation of the phthalodinitrile, whereby the vaporous product of the ammonoxidation stage is directly brought into contact with a liquid organic solvent or with melted phthalodinitrile (quench); constituents having a boiling point lower than that of phthalodinitrile (low boilers) are partially or completely separated out from the obtained quench solution or suspension or phthalodinitrile melt, and; before the hydrogenation of the phthalodinitrile, no products having a boiling point higher than that of phthalodinitrile (high boilers) are separated out.
Bibliography:Application Number: CN200480026131