(19)

(11)

EP 0 679 180 A1

(12)

(43) Date of publication: 02.11.1995 Bulletin 1995/44 (21) Application number: 95900136.0 (22) Date of filing: 11.11.1994

(51) International Patent Classification (IPC):  C11D 1/ 88( . ) C11D 1/ 92( . ) C11D 3/ 43( . ) C11D 17/ 00( . ) C11D 1/ 90( . ) C11D 3/ 20( . ) C11D 11/ 04( . ) (86) International application number: PCT/EP1994/003726 (87) International publication number: WO 1995/014076 (26.05.1995 Gazette 1995/22)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 13.11.1993 GB 19930023449 (71) Applicant: ALBRIGHT & WILSON LIMITED Oldbury, Warley, West Midlands B68 0NN (GB)	(72) Inventors: BEDNALL, Neil, Colin Whitehaven Cumbria CA28 7TY (GB) BLEZARD, Michael Cumbria (GB) HEALY, Christopher Cumbria CA14 1LL (GB) MARTIN, Anthony Cumbria CA14 1JQ (GB) (74) Representative: Savidge, Roger Gordon Madgwick, et al  ALBRIGHT & WILSON UK LIMITED Patents Department P O Box 3 210-222 Hagley Road Oldbury, Warley, West Midlands B68 0NN Oldbury, Warley, West Midlands B68 0NN (GB)