EP 0984900 A1 20000315 - METHOD FOR PREPARING AN ULTRAPURE HYDROGEN PEROXIDE SOLUTION BY ION EXCHANGE WITH RECIRCULATION
Title (en)
METHOD FOR PREPARING AN ULTRAPURE HYDROGEN PEROXIDE SOLUTION BY ION EXCHANGE WITH RECIRCULATION
Title (de)
VERFAHREN ZUR HERSTELLUNG EINER HOCHREINEN WASSERSTOFFPEROXIDLÖSUNG MITTELS IONENAUSTAUSCH MIT ZURÜCKFÜHRUNG
Title (fr)
PROCEDE DE PREPARATION D'UNE SOLUTION ULTRA-PURE DE PEROXYDE D'HYDROGENE PAR ECHANGE IONIQUE AVEC RECYCLAGE
Publication
Application
Priority
- FR 9801058 W 19980527
- FR 9706471 A 19970527
Abstract (en)
[origin: FR2763931A1] The invention concerns a method for preparing an ultrapure hydrogen peroxide solution characterised in that it comprises at least one sequence which involves successively passing the solution to be purified on at least a bed of ion-exchanging adsorbents (AEA) and at least a bed of cation-exchanging adsorbents (AEC) and in that the non-null proportion of the solution coming from a bed is recirculated either upstream of said bed, or upstream of one of the preceding beds, or upstream of the first bed of the passage sequence. The invention also concerns an installation for implementing the method.
IPC 1-7
IPC 8 full level
B01J 39/04 (2006.01); B01J 41/04 (2006.01); B01J 47/02 (2006.01); C01B 15/013 (2006.01)
CPC (source: EP KR US)
B01J 47/028 (2013.01 - EP US); C01B 15/013 (2013.01 - KR); C01B 15/0135 (2013.01 - EP US)
Citation (search report)
See references of WO 9854088A1
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
FR 2763931 A1 19981204; FR 2763931 B1 19990730; AU 8022898 A 19981230; EP 0984900 A1 20000315; JP 2002500612 A 20020108; KR 20010013065 A 20010226; TW 450941 B 20010821; US 5928621 A 19990727; US 6187189 B1 20010213; WO 9854088 A1 19981203
DOCDB simple family (application)
FR 9706471 A 19970527; AU 8022898 A 19980527; EP 98928367 A 19980527; FR 9801058 W 19980527; JP 50032999 A 19980527; KR 19997011044 A 19980527; TW 87107891 A 19980521; US 27581999 A 19990325; US 86796097 A 19970603