METHOD FOR PREPARING AROMATIC DICARBOXYLIC ACID

PURPOSE: A manufacturing method of aromatic dicarboxylic acids is provided to remarkably reduce the content of impurity including an action intermediate, thereby obtaining high yield and improved quality. CONSTITUTION: A manufacturing method of aromatic dicarboxylic acids comprises: an oxidation ste...

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Bibliographische Detailangaben
Hauptverfasser:	LEE, JANG WON, PARK, KYOUNG BAE, KIM, SEUNG SU, CHOI, KYU YEOL
Format:	Patent
Sprache:	eng ; kor
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS CHEMISTRY METALLURGY ORGANIC CHEMISTRY
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Beschreibung
Zusammenfassung:	PURPOSE: A manufacturing method of aromatic dicarboxylic acids is provided to remarkably reduce the content of impurity including an action intermediate, thereby obtaining high yield and improved quality. CONSTITUTION: A manufacturing method of aromatic dicarboxylic acids comprises: an oxidation step obtaining crude aromatic dicarboxylic acids containing aromatic dicarboxylic acid and an intermediate by oxidizing an aromatic raw compound under the presence of a reaction accelerator of peroxide and a reaction catalyst; a solid-liquid separation step obtaining crude aromatic dicarboxylic acidic cake by coagulation separating the crude carboxylic acids with mother liquid; and additionally s purification step converting the crude aromatic dicarboxylic acidic cake to aromatic dicarboxylic acids by oxidation-reduction reacting with oxygen supply source.