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(11)

EP 1 071 735 A1

(12)

(43) Date of publication: 31.01.2001 Bulletin 2001/05 (21) Application number: 99916694.5 (22) Date of filing: 16.04.1999

(51) International Patent Classification (IPC)7: C11D 1/75, C11D 3/43, C11D 3/30 (86) International application number: PCT/US9908/392 (87) International publication number: WO 9953/003 (21.10.1999 Gazette 1999/42)

(84) Designated Contracting States: DE FR GB (30) Priority: 16.04.1998 JP 1644498 (71) Applicant: MINNESOTA MINING AND MANUFACTURING COMPANY St. Paul,Minnesota 55133-3427 (US)	(72) Inventor: TOTOKI, Takatushi Sagamihara-city,Kanagawa Pref. 220 (JP) (74) Representative: VOSSIUS & PARTNER  Siebertstrasse 4 81675 München 81675 München (DE)