(19)

(11)

EP 0 238 635 A1

(12)

(43) Date of publication: 30.09.1987 Bulletin 1987/40 (21) Application number: 86906122.0 (22) Date of filing: 19.09.1986

(51) International Patent Classification (IPC):  C11D 1/ 68( . ) C11D 1/ 75( . ) C11D 1/ 66( . ) C11D 1/ 825( . ) (86) International application number: PCT/US1986/001959 (87) International publication number: WO 1987/002051 (09.04.1987 Gazette 1987/08)

(84) Designated Contracting States: BE DE FR GB IT NL SE (30) Priority: 26.09.1985 US 19850781272 (71) Applicant: A.E. STALEY MANUFACTURING COMPANY Decatur, Illinois 62525 (US)	(72) Inventors: URFER, Allen, D. Decatur, IL 62526 (US) HOWELL, Gail, M. Decatur, IL 62526 (US) (74) Representative: Cockbain, Julian Roderick Michaelson  Frank B. Dehn & Co. European Patent Attorneys Imperial House 15-19, Kingsway London WC2B 6UZ London WC2B 6UZ (GB)