(19)

(11)

EP 0 707 497 A1

(12)

(43) Date of publication: 24.04.1996 Bulletin 1996/17 (21) Application number: 94917992.0 (22) Date of filing: 16.05.1994

(51) International Patent Classification (IPC):  A61F 13/ 04( . ) A61L 15/ 07( . ) D01F 6/ 06( . ) A61F 5/ 058( . ) C08K 5/ 353( . ) (86) International application number: PCT/US1994/005417 (87) International publication number: WO 1994/027648 (08.12.1994 Gazette 1994/27)

(84) Designated Contracting States: CH DE ES FR GB IT LI NL (30) Priority: 01.06.1993 US 19930069868 (71) Applicant: MINNESOTA MINING AND MANUFACTURING COMPANY St. Paul, Minnesota 55133-3427 (US)	(72) Inventors: CAMPAGNA, Anthony, J. Roseville, MN 55113 (US) ERSFELD, Dean, A. Maplewood, MN 55109 (US) SANDVIG, Timothy, C. Woodville, WI 54028 (US) SCHOLZ, Matthew, T. Woodbury, MN 55125 (US) (74) Representative: von Kreisler, Alek, Dipl.-Chem., et al  Patentanwälte, von Kreisler-Selting-Werner, Bahnhofsvorplatz 1 (Deichmannhaus) D-50667 Köln D-50667 Köln (DE)