(19)
(11) EP 1 125 006 A1

(12)

(43) Date of publication:
22.08.2001 Bulletin 2001/34

(21) Application number: 99971052.8

(22) Date of filing: 22.10.1999
(51) International Patent Classification (IPC)7C25B 15/00, C25B 11/00
(86) International application number:
PCT/US9924/862
(87) International publication number:
WO 0024/950 (04.05.2000 Gazette 2000/18)
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 23.10.1998 US 105336 P

(71) Applicant: THE DOW CHEMICAL COMPANY
Midland, Michigan 48674 (US)

(72) Inventors:
  • ZHOU, Jianqing
    D-21683 Stade (DE)
  • MENSCHIG, Klaus-Ruediger
    Sugar Land, TX 77479 (US)

(74) Representative: Raynor, John et al
W.H. Beck, Greener & Co7 Stone BuildingsLincoln's Inn
London WC2A 3SZ
London WC2A 3SZ (GB)

   


(54) METHOD OF REDUCING THE CATHODIC OVERVOLTAGE OF AN ELECTROLYTIC CELL