(19)
(11) EP 0 799 085 A1

(12)

(43) Date of publication:
08.10.1997 Bulletin 1997/41

(21) Application number: 95943606.0

(22) Date of filing: 28.11.1995
(51) International Patent Classification (IPC): 
B01D 53/ 52( . )
(86) International application number:
PCT/US1995/015393
(87) International publication number:
WO 1996/019280 (27.06.1996 Gazette 1996/29)
(84) Designated Contracting States:
DE FR GB IT NL

(30) Priority: 21.12.1994 US 19940360890

(71) Applicant: THE DOW CHEMICAL COMPANY
Midland, Michigan 48640 (US)

(72) Inventors:
  • ALLEN, M., C.
    Columbia, SC 29209 (US)
  • BEDELL, S., A.
    Lake Jackson, TX 77566 (US)

(74) Representative: Burford, Anthony Frederick 
W.H. Beck, Greener & Co. 7 Stone Buildings Lincoln's Inn
London WC2A 3SZ
London WC2A 3SZ (GB)

   


(54) H 2S ABSORPTION WITH SUBSEQUENT OXALATE REMOVAL