(19)

(11)

EP 0 158 632 A1

(12)

(43) Date of publication: 23.10.1985 Bulletin 1985/43 (21) Application number: 83903391.0 (22) Date of filing: 14.10.1983

(51) International Patent Classification (IPC):  B01J 8/ 44( . ) F26B 3/ 08( . ) (86) International application number: PCT/GB1983/000261 (87) International publication number: WO 1985/001674 (25.04.1985 Gazette 1985/10)

(84) Designated Contracting States: BE CH DE FR LI NL SE (71) Applicant: N D ASHMAN LIMITED Worcestershire WR10 2QR (GB)	(72) Inventor: ASHMAN, Neville, David Worcestershire WR10 2QR (GB)