(19)

(11)

EP 0 420 855 A1

(12)

(43) Date of publication: 10.04.1991 Bulletin 1991/15 (21) Application number: 89904990.0 (22) Date of filing: 22.03.1989

(51) International Patent Classification (IPC):  G03G 9/ 08( . ) G03G 9/ 093( . ) G03G 13/ 01( . ) G03G 9/ 09( . ) G03G 9/ 12( . ) G03G 15/ 01( . ) (86) International application number: PCT/US1989/001227 (87) International publication number: WO 1989/009433 (05.10.1989 Gazette 1989/24)

(84) Designated Contracting States: BE CH DE FR GB IT LI NL SE (30) Priority: 23.03.1988 US 19880171614 21.11.1988 US 19880274542 10.02.1989 US 19890308713 (71) Applicant: OLIN CORPORATION Cheshire, CT 06410-0586 (US)	(72) Inventors: WING, Feagin, A., Jr. Farmington, CT 06032 (US) DAY, Roger, W. Louisville, KY 40222 (US) BURT, Willard, F. Bristol, CT 06010 (US) GROSSO, Paul, V. West Hartford, CT 06117 (US) MORGAN, Michael, J. Northford, CT 06032 (US) (74) Representative: Klunker . Schmitt-Nilson . Hirsch  Winzererstrasse 106 D-80797 München D-80797 München (DE)