Process for producing laurolactam from cyclododecanone

Laurolactam having high quality is produced by reacting cyclododecanone with a hydroxylamine salt of a mineral acid, and converting the resultant cyclododecanoneoxime to laurolactam through the Beckmann rearrangement reaction, wherein a content of each of oxygen atom-containing C12 organic compounds...

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Bibliographic Details
Main Authors KURODA NOBUYUKI, SHIMOMURA HIDEO, KAWAI JOJI
Format Patent
LanguageEnglish
Published 24.07.2003
Edition7
Subjects
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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Summary:Laurolactam having high quality is produced by reacting cyclododecanone with a hydroxylamine salt of a mineral acid, and converting the resultant cyclododecanoneoxime to laurolactam through the Beckmann rearrangement reaction, wherein a content of each of oxygen atom-containing C12 organic compounds, for example, cyclododecenone or epoxycyclododecane, and cycloaliphatic unsaturated C12 hydrocarbon compounds, contained, as an impurity, in the staring cyclododecanone material, is controlled to 1,000 ppm or less.
Bibliography:Application Number: US20030345548