(19)

(11)

EP 0 464 151 A1

(12)

(43) Date of publication: 08.01.1992 Bulletin 1992/02 (21) Application number: 90906479.0 (22) Date of filing: 16.03.1990

(51) International Patent Classification (IPC):  B22D 11/ 10( . ) B22D 11/ 115( . ) (86) International application number: PCT/US1990/001459 (87) International publication number: WO 1990/011148 (04.10.1990 Gazette 1990/23)

(84) Designated Contracting States: DE ES FR GB IT NL SE (30) Priority: 20.03.1989 US 19890325821 (71) Applicant: OLIN CORPORATION Cheshire, CT 06410-0586 (US)	(72) Inventors: TUNGATT, Paul, D. Middletown, CT 06457 (US) LEWIS, Brian, G. Branford, CT 06405 (US) (74) Representative: Klunker . Schmitt-Nilson . Hirsch  Winzererstrasse 106 D-80797 München D-80797 München (DE)