(19)

(11)

EP 0 806 893 A1

(12)

(43) Date of publication: 19.11.1997 Bulletin 1997/47 (21) Application number: 96903745.0 (22) Date of filing: 31.01.1996

(51) International Patent Classification (IPC):  A01N 25/ 12( . ) A01N 25/ 30( . ) B01J 2/ 00( . ) C05G 3/ 02( . ) A01N 25/ 14( . ) A01N 57/ 20( . ) C05C 3/ 00( . ) (86) International application number: PCT/US1996/001233 (87) International publication number: WO 1996/023408 (08.08.1996 Gazette 1996/36)

(84) Designated Contracting States: AT BE DE DK ES FR GB IT PT SE (30) Priority: 31.01.1995 US 19950381599 (71) Applicant: RHONE-POULENC INC. Monmouth Junction, New Jersey 08852 (US)	(72) Inventor: HAZEN, James, Lyle Plainsboro, NJ 08536 (US) (74) Representative: Kyle, Diana  Elkington and Fife Prospect House 8 Pembroke Road Sevenoaks, Kent TN13 1XR Sevenoaks, Kent TN13 1XR (GB)