METHOD FOR PURIFYING ORGANIC SOLVENTS

Title:

METHOD FOR PURIFYING ORGANIC SOLVENTS

Document Type and Number:

WIPO Patent Application WO/2012/033240

Kind Code:

A1

Abstract:

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.

More Like This:

WO/2000/020375	PROCESS FOR THE PREPARATION OF ETHYL ACETATE
WO/2012/058196	METHODS FOR PRODUCING A VINYL ACETATE COMPOSITION HAVING A LOW IMPURITY CONTENT

Inventors:

JEONG HYUN CHEOL (KR)
MUN JAE WOONG (KR)
JEONG JIN BAE (KR)
BAE EUN HYOUNG (KR)
KANG DO SOON (KR)
LEE MYUNG HO (KR)

Application Number:

PCT/KR2010/006100

Publication Date:

March 15, 2012

Filing Date:

September 08, 2010

Export Citation:

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Assignee:

ENF TECHNOLOGY CO LTD (KR)
JEONG HYUN CHEOL (KR)
MUN JAE WOONG (KR)
JEONG JIN BAE (KR)
BAE EUN HYOUNG (KR)
KANG DO SOON (KR)
LEE MYUNG HO (KR)

International Classes:

C07C67/60; C07B63/00; C07C67/54; C07C69/708

Domestic Patent References:

WO2009031731A1

2009-03-12

Foreign References:

KR100972103B1	2010-07-22
KR100869333B1	2008-11-18
KR100732719B1	2007-06-27
US6159345A	2000-12-12

Attorney, Agent or Firm:

JANG, Seongku et al. (Trust Tower#275-7, Yangjae-dong, Seocho-ku, Seoul 137-130, KR)

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