METHOD FOR PURIFYING N-SUBSTITUTED MALEIMIDE

Title:

METHOD FOR PURIFYING N-SUBSTITUTED MALEIMIDE

Document Type and Number:

WIPO Patent Application WO/2019/132144

Kind Code:

A1

Abstract:

The present invention relates to a method for purifying an N-substituted maleimide. Specifically, the present invention introduces, after removing an organic solvent from an N-substituted maleimide generation solution, an evaporation apparatus capable of removing, in advance, impurities having higher boiling points than an N-substituted maleimide, thereby enabling an N-substituted maleimide having high purity to be obtained by minimizing pressure loss and polymerization loss.

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Inventors:

KIM EUN KYO (KR)
LEE JEONG SEOK (KR)
KIM MI KYUNG (KR)
CHEON JOO YOUNG (KR)

Application Number:

PCT/KR2018/007765

Publication Date:

July 04, 2019

Filing Date:

July 09, 2018

Export Citation:

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Assignee:

LG CHEMICAL LTD (KR)

International Classes:

C07D207/444; C08F8/30

Foreign References:

KR910004790B1	1991-07-13
JPH07109258A	1995-04-25
US5136052A	1992-08-04
CN102850253A	2013-01-02
US20030105337A1	2003-06-05
KR20090039133A	2009-04-22
US5136052A	1992-08-04

Other References: