(19)

(11)

EP 0 879 252 A1

(12)

(43) Date of publication: 25.11.1998 Bulletin 1998/48 (21) Application number: 97902470.0 (22) Date of filing: 04.02.1997

(51) International Patent Classification (IPC):  C08F 6/ 00( . ) C08F 20/ 56( . ) (86) International application number: PCT/GB1997/000317 (87) International publication number: WO 1997/029136 (14.08.1997 Gazette 1997/35)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI LU NL PT SE (30) Priority: 07.02.1996 GB 19960002415 (71) Applicant: ALLIED COLLOIDS LIMITED Bradford, West Yorkshire BD12 0JZ (GB)	(72) Inventors: HUGHES, Jonathan Halifax, West Yorkshire HB6 3EW (GB) ARMITAGE, Yvonne, Christine Huddersfield, West Yorkshire HD7 1SA (GB) SYMES, Kenneth, Charles Keighley, West Yorkshire BD20 5UU (GB) BROOKE, Anthony, Paul Bradford, West Yorkshire BD9 6NU (GB)