(19)

(11)

EP 1 021 454 A1

(12)

(43) Date of publication: 26.07.2000 Bulletin 2000/30 (21) Application number: 97937033.5 (22) Date of filing: 28.07.1997

(51) International Patent Classification (IPC)7: C07F 17/00, C07F 7/10, C08F 10/00 (86) International application number: PCT/US9713/171 (87) International publication number: WO 9806/728 (19.02.1998 Gazette 1998/07)

(84) Designated Contracting States: AT BE CH DE ES FI FR GB IT LI LU NL PT SE (30) Priority: 08.08.1996 US 23768 P (71) Applicant: THE DOW CHEMICAL COMPANY Midland, Michigan 48674 (US)	(72) Inventors: KLOSIN, Jerzy Midland, MI 48642 (US) KRUPER, William, J., Jr. Sanford, MI 48657 (US) NICKIAS, Peter, N. Midland, MI 48642 (US) PATTON, Jasson, T. Midland, MI 48642 (US) WILSON, David, R. Midland, MI 48640 (US) (74) Representative: Burford, Anthony Frederick et al W.H. Beck, Greener & Co.7 Stone BuildingsLincoln's Inn London WC2A 3SZ London WC2A 3SZ (GB)