(19)

(11)

EP 0 703 992 A1

(12)

(43) Date of publication: 03.04.1996 Bulletin 1996/14 (21) Application number: 94916344.0 (22) Date of filing: 01.06.1994

(51) International Patent Classification (IPC):  B01D 1/ 18( . ) C13K 1/ 00( . ) (86) International application number: PCT/GB1994/001191 (87) International publication number: WO 1994/028181 (08.12.1994 Gazette 1994/27)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IE IT LI NL PT SE Designated Extension States: SI (30) Priority: 01.06.1993 GB 19930011274 (71) Applicant: CARGILL PLC Tilbury, Essex RM18 7PU (GB)	(72) Inventors: CHASE, Julian Edward Westcliff-on-Sea, Essex SS0 8DA (GB) SMITH, Jeffrey Michael New Crane Wharf, London EC1 9TU (GB) McIVOR, Malcolm Alfred Billericay, Essex CM11 2QJ (GB) (74) Representative: Cockbain, Julian, Dr.  Frank B. Dehn & Co. Imperial House 15-19 Kingsway London WC2B 6UZ London WC2B 6UZ (GB)