EP 0370920 A1 19900530 - Process for the production of quinone from hydroquinone by electrolysis.
Title (en)
Process for the production of quinone from hydroquinone by electrolysis.
Title (de)
Verfahren zur Herstellung von Chinon aus Hydrochinon durch Elektrolyse.
Title (fr)
Procédé de préparation de quinone à partir d'hydroquinone par électrolyse.
Publication
Application
Priority
FR 8814361 A 19881014
Abstract (en)
[origin: US4963234A] Quinones are produced by electrolysis of corresponding hydroquinones, in the anode compartment of an electrolytic cell, by electrolyzing a dispersion or emulsion including a conductive aqueous solution of hydroquinone and at least one stable cosolvent which is poorly soluble in water but which is a good solvent for the quinone produced and a poor solvent for the hydroquinone.
Abstract (fr)
La présente invention concerne un procédé de préparation de quinone à partir d'hydroquinone parélectrolyse, caractérisé en ce que l'on réalise l'électrolyse, dans le compartiment anodique d'un électrolyseur, d'une dispersion ou émulsion, comportant une solution aqueuse conductrice de l'hydroquinone et au moins un cosolvant stable, peu soluble dans l'eau qui est un bon solvant de la quinone produite et un mauvais solvant de l'hydroquinone.
IPC 1-7
IPC 8 full level
C25B 3/23 (2021.01)
CPC (source: EP US)
C25B 3/23 (2021.01 - EP US)
Citation (search report)
- [A] PATENT ABSTRACTS OF JAPAN, vol. 6, no. 231 (C-135)[1109], 17 novembre 1982; & JP-A-57 134 581 (SHIGERU TORII) 19-08-1982
- [A] PATENT ABSTRACTS OF JAPAN, vol. 7, no. 46 (C-153)[1191], 23 février 1983; & JP-A-57 198 283 (ASAHI GLASS K.K.) 04-12-1982
Designated contracting state (EPC)
AT BE CH DE ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
US 4963234 A 19901016; AT E87040 T1 19930415; CA 1330773 C 19940719; DE 68905443 D1 19930422; DE 68905443 T2 19930624; EP 0370920 A1 19900530; EP 0370920 B1 19930317; ES 2041436 T3 19931116; FR 2637916 A1 19900420; FR 2637916 B1 19901207; IE 893306 L 19900414; JP H02141592 A 19900530; JP H034625 B2 19910123
DOCDB simple family (application)
US 42183389 A 19891016; AT 89420383 T 19891009; CA 612834 A 19890925; DE 68905443 T 19891009; EP 89420383 A 19891009; ES 89420383 T 19891009; FR 8814361 A 19881014; IE 330689 A 19891013; JP 25717889 A 19891003