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1. EP3902783 - METHOD FOR PURIFYING ALKYL HYDROPEROXIDE BY EXTRACTION WITH WATER AND SEPARATION OF THE AQUEOUS PHASE

Office
European Patent Office
Application Number 19849028
Application Date 20.12.2019
Publication Number 3902783
Publication Date 03.11.2021
Publication Kind A1
IPC
C07C 407/00
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
407Preparation of peroxy compounds
C07C 409/04
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
409Peroxy compounds
02the -O-O- group being bound between a carbon atom, not further substituted by oxygen atoms, and hydrogen, i.e. hydroperoxides
04the carbon atom being acyclic
CPC
C07C 407/003
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
407Preparation of peroxy compounds
003Separation; Purification; Stabilisation; Use of additives
Applicants ARKEMA FRANCE
Inventors MAJ PHILIPPE
BLUM ALBERT
HUB SERGE
VAN HEMELRYCK BRUNO
Designated States
Priority Data 1874173 26.12.2018 FR
Title
(DE) VERFAHREN ZUR REINIGUNG VON ALKYLHYDROPEROXID DURCH EXTRAKTION MIT WASSER UND ABTRENNUNG DER WÄSSRIGEN PHASE
(EN) METHOD FOR PURIFYING ALKYL HYDROPEROXIDE BY EXTRACTION WITH WATER AND SEPARATION OF THE AQUEOUS PHASE
(FR) PROCÉDÉ DE PURIFICATION DE L'HYDROPEROXYDE D'ALKYLE PAR EXTRACTION À L'EAU ET SÉPARATION DE LA PHASE AQUEUSE
Abstract
(EN) The present invention relates to a method for purifying a mixture containing at least one alkyl hydroperoxide, preferably tert-butyl hydroperoxide or tert-amyl hydroperoxide, and at least one corresponding dialkyl hydroperoxide, said method comprising at least one step of extraction with water and at least one separation step which is carried out within the aqueous phase, obtained following the extraction step, in order to recover an aqueous solution which is rich in alkyl hydroperoxide. The invention also relates to an aqueous composition which is rich in alkyl hydroperoxide and contains at least 0.1% by weight of dialkyl peroxide in relation to the total weight of the composition.
(FR) Procédé de purification de l'hydroperoxyde d'alkyle par extraction à l'eau et séparation de la phase aqueuse La présente invention concerne un procédé de purification d'un mélange contenant au moins un hydroperoxyde d'alkyle, de préférence l'hydroperoxyde de tert-butyle ou l'hydroperoxyde de tert-amyle, et au moins un peroxyde de dialkyle correspondant comprenant au moins une étape d'extraction à l'eau et au moins une étape de séparation mise en œuvre au sein de la phase aqueuse, obtenue à la suite de l'étape d'extraction, afin de récupérer une solution aqueuse riche en hydroperoxyde d'alkyle. L'invention concerne également une composition aqueuse riche en hydroperoxyde d'alkyle contenant moins de 0,1% en poids de peroxyde de dialkyle par rapport au poids total de la composition.
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