(19)

(11)

EP 0 705 329 A1

(12)

(43) Date of publication: 10.04.1996 Bulletin 1996/15 (21) Application number: 94919615.0 (22) Date of filing: 04.06.1994

(51) International Patent Classification (IPC):  C11D 3/ 12( . ) C11D 17/ 00( . ) (86) International application number: PCT/EP1994/001846 (87) International publication number: WO 1995/000628 (05.01.1995 Gazette 1995/02)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IE IT LI NL PT SE (30) Priority: 25.06.1993 GB 19930013160 (71) Applicant: CROSFIELD LIMITED Warrington, Cheshire, WA5 1AB (GB)	(72) Inventors: CARTWRIGHT, Simon Wirral, Merseyside L63 0QQ (GB) VAN DER HOEVEN, Philippus, Cornelis NL-4841 XV Prinsenbeek (NL) MINIHAN, Alan, Reginald Merseyside L45 8JB (GB) (74) Representative: Hugot, Alain, et al  Unilever plc, Patent Division, Colworth House Sharnbrook, Bedford MK44 1LQ Sharnbrook, Bedford MK44 1LQ (GB)