(19)

(11)

EP 0 889 749 A1

(12)

(43) Date of publication: 13.01.1999 Bulletin 1999/02 (21) Application number: 97915560.0 (22) Date of filing: 01.04.1997

(51) International Patent Classification (IPC):  B01F 3/ 08( . ) B01F 5/ 10( . ) B01F 5/ 06( . ) (86) International application number: PCT/GB1997/000910 (87) International publication number: WO 1997/036674 (09.10.1997 Gazette 1997/43)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 29.03.1996 GB 19960006738 (71) Applicant: Disperse Technologies Limited Falmouth, Cornwall TR11 5HA (GB)	(72) Inventors: WILLIAMS, Richard, Andrew Falmouth, Cornwall TR11 5HA (GB) WHEELER, Derek, Alfred Dorking, Surrey RH5 4RH (GB) MORLEY, Neil, Christopher Macclesfield, Cheshire SK11 8AP (GB) (74) Representative: Allard, Susan Joyce, et al  BOULT WADE TENNANT, 27 Furnival Street London EC4A 1PQ London EC4A 1PQ (GB)