JPH05339203

PURPOSE:To obtain a naphthalenedicarboxylic acid through suppressing the loss of a lower aliphatic carboxylic acid to be used as solvent. CONSTITUTION:The objective naphthalenedicarboxylic acid can be obtained by oxidation of a dialkylnaphthalene and/or an oxidized intermediate thereof using a molec...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	AOYANAGI MITSUHITO, NAMATAME AKIO, HASEGAWA HIDEO
Format:	Patent
Sprache:	eng
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS APPARATUS THEREFOR CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY GENERAL METHODS OF ORGANIC CHEMISTRY METALLURGY ORGANIC CHEMISTRY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR RELEVANT APPARATUS TRANSPORTING
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	PURPOSE:To obtain a naphthalenedicarboxylic acid through suppressing the loss of a lower aliphatic carboxylic acid to be used as solvent. CONSTITUTION:The objective naphthalenedicarboxylic acid can be obtained by oxidation of a dialkylnaphthalene and/or an oxidized intermediate thereof using a molecular oxygen-contg. gas in the presence of a catalyst composed of a heavy metal and bromine at 180-230 deg.C in a solvent being a lower aliphatic monocarboxylic acid containing 5-45wt.% of water at a concentration of the heavy metal in the solvent being set at >=0.1wt.%.