Method for producing [epsilon]-caprolactone

The object of the present invention is a method for producing e-caprolactone in a purity greater than 99% by cyclization of 6-hydroxycaproic acid ester in the liquid phase at 150 to 400 DEG C and 1 to 1020 hPa abs., separation and condensation of the compounds which are volatile under cyclization co...

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Main Authors PINKOS ROLF, GASIOROWSKI TODD, BEJUNE STEPHANIE, SPENGEMAN TODD C, SIRCH TILMAN, ANDRESS JEFFREY T, TEBBEN GERD DIETER, KRUG THOMAS
Format Patent
LanguageChinese
English
Published 29.09.2010
Subjects
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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Summary:The object of the present invention is a method for producing e-caprolactone in a purity greater than 99% by cyclization of 6-hydroxycaproic acid ester in the liquid phase at 150 to 400 DEG C and 1 to 1020 hPa abs., separation and condensation of the compounds which are volatile under cyclization conditions, characterized in that the remaining sump product of the cyclization is thermally treated in at least one further reactor, volatile compounds are separated and condensed, and epsilon-caprolactone is obtained from the condensate by distillation.
Bibliography:Application Number: CN200880114782