Method for purifying and refining epsi-caprolactam

This invention relates to a refine means of epsilon - caprolactam by separation and purification. The feature of the invention is that it includes the step of crystallize epsilon - caprolactam from ethereal solution containing crude epsilon - caprolactam. The product purity can reach 99.98%upwards,...

Full description

Saved in:
Bibliographic Details
Main Authors YANG KEYONG, CHEN SHIBIAO, WU WEI, MIN ENZE, WANG ENQUAN, ZHANG SHUZHONG, SUN BIN
Format Patent
LanguageChinese
English
Published 25.01.2012
Subjects
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
Online AccessGet full text

Cover

More Information
Summary:This invention relates to a refine means of epsilon - caprolactam by separation and purification. The feature of the invention is that it includes the step of crystallize epsilon - caprolactam from ethereal solution containing crude epsilon - caprolactam. The product purity can reach 99.98%upwards, absorption value of potassium permanganate is greater than 10000 or more, the extinction value of epsilon - caprolactam at 290nm wavelength is 0.05 or smaller. The invention wholly meets the require of industrial product.
Bibliography:Application Number: CN2006180704