Global Patent Index - EP 0984898 A1

EP 0984898 A1 2000-03-15 - METHOD FOR PREPARING AN ULTRAPURE HYDROGEN PEROXIDE SOLUTION BY ION EXCHANGE IN BEDS WITH DEFINED H/D RATIO

Title (en)

METHOD FOR PREPARING AN ULTRAPURE HYDROGEN PEROXIDE SOLUTION BY ION EXCHANGE IN BEDS WITH DEFINED H/D RATIO

Title (de)

VERFAHREN ZUR HERSTELLUNG EINER HOCHREINEN WASSERSTOFFPEROXIDLÖSUNG MITTELS IONENAUSTAUSCH IN BETTEN MIT DEFINIERTEM H/D-VERHÄLTNIS

Title (fr)

PROCEDE DE PREPARATION D'UNE SOLUTION ULTRA-PURE DE PEROXYDE PAR ECHANGE IONIQUE DANS DES LITS A RAPPORTS H/D DEFINIS

Publication

EP 0984898 A1 (FR)

Application

EP 98928365 A

Priority

  • FR 9801056 W
  • FR 9706472 A

Abstract (en)

[origin: FR2763932A1] The invention concerns a method for preparing an ultrapure hydrogen peroxide solution, characterised in that it includes at least a sequence which involves successively passing the solution to be purified on at least a bed of cation-exchanging adsorbents (AEC) and at least a bed of anion-exchanging adsorbents (AEA) and the adsorbent beds each have a height/diameter ratio greater than 5. The invention also concerns an installation for implementing the method.

IPC 1-7 (main, further and additional classification)

C01B 15/013; B01J 39/04

IPC 8 full level (invention and additional information)

B01J 39/04 (2006.01); B01J 41/04 (2006.01); B01J 47/02 (2006.01); C01B 15/013 (2006.01)

CPC (invention and additional information)

B01J 47/028 (2013.01); C01B 15/0135 (2013.01)

Citation (search report)

See references of WO 9854086A1

Designated contracting state (EPC)

DE FR GB IT

EPO simple patent family

FR 2763932 A1 19981204; FR 2763932 B1 19990730; AU 8022698 A 19981230; EP 0984898 A1 20000315; JP 2002500610 A 20020108; KR 20010013061 A 20010226; TW 533093 B 20030521; US 5932187 A 19990803; US 6183638 B1 20010206; WO 9854086 A1 19981203

INPADOC legal status


2002-04-17 [18W] WITHDRAWN

- Date of withdrawal: 20020220

2000-08-09 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20000623

2000-03-15 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19991227

2000-03-15 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE FR GB IT