METHOD FOR PURIFYING ORGANIC SOLVENTS

The present invention relates to a method for purifying waste organic solvents. An alkoxide-based compound is added to waste organic solvents containing propylene glycol monomethylether acetate produced in a display manufacturing process and the like and the obtained mixture is reacted, thereby reco...

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Bibliographic Details
Main Authors JEONG, JIN BAE, MUN, JAE WOONG, JEONG, HYUN CHEOL, KANG, DO SOON, LEE, MYUNG HO, BAE, EUN HYOUNG
Format Patent
LanguageEnglish
French
Korean
Published 15.03.2012
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
APPARATUS THEREFOR
CHEMISTRY
GENERAL METHODS OF ORGANIC CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Summary:The present invention relates to a method for purifying waste organic solvents. An alkoxide-based compound is added to waste organic solvents containing propylene glycol monomethylether acetate produced in a display manufacturing process and the like and the obtained mixture is reacted, thereby recovering purified products of a high purity in a high yield through the change in the boiling points of impurities such as propionates and ketones. La présente invention concerne un procédé de purification de solvants organiques résiduaires. Un composant à base d'alcoolate est ajouté à des solvants organiques résiduaires contenant du monométhyléther acétate de propylène glycol obtenu dans un procédé de fabrication d'un dispositif d'affichage et similaire et le mélange obtenu est mis à réagir, permettant ainsi de récupérer des produits purifiés d'une pureté élevée dans un rendement élevé par le changement des points d'ébullition d'impuretés telles que des propionates et des cétones.
Bibliography:Application Number: WO2010KR06100