(19)

(11)

EP 1 009 866 A1

(12)

(43) Date of publication: 21.06.2000 Bulletin 2000/25 (21) Application number: 98912110.8 (22) Date of filing: 30.03.1998

(51) International Patent Classification (IPC)7: C22C 9/02 (86) International application number: PCT/US9806/157 (87) International publication number: WO 9848/068 (29.10.1998 Gazette 1998/43)

(84) Designated Contracting States: CH DE FR GB IT LI SE (30) Priority: 18.04.1997 US 844478 30.06.1997 US 885930 (71) Applicant: OLIN CORPORATION Cheshire, CT 06410-0586 (US)	(72) Inventors: BRAUER, Dennis, R. Brighton, IL 62021 (US) BREEDIS, John, F. Trumbull, CT 06611 (US) CARON, Ronald, N. Branford, CT 06405 (US) DEEPISCH, Carl Hamden, CT 06518 (US) (74) Representative: Klunker . Schmitt-Nilson . Hirsch  Winzererstrasse 106 80797 München 80797 München (DE)