(19)

(11)

EP 0 843 750 A1

(12)

(43) Date of publication: 27.05.1998 Bulletin 1998/22 (21) Application number: 95929383.0 (22) Date of filing: 04.08.1995

(51) International Patent Classification (IPC):  D01D 5/ 08( . ) D02J 1/ 22( . ) D01F 6/ 62( . ) (86) International application number: PCT/US1995/009909 (87) International publication number: WO 1997/006295 (20.02.1997 Gazette 1997/09)

(84) Designated Contracting States: CH DE ES FR GB IE IT LI (71) Applicant: E.I. DU PONT DE NEMOURS AND COMPANY Wilmington Delaware 19898 (US)

(72) Inventors: BENNIE, David, George Rocky Point, NC 28457-9560 (US) COLLINS, Robert, James Wilmington, NC 28405-9366 (US) FRANKFORT, Hans, Rudolf, Edward Kinston, NC 28501-2780 (US) JOHNSON, Stephen, Buckner Wilmington, NC 28409 (US) KNOX, Benjamin, Hughes Wilmington, DE 19808-5420 (US) LONDON, Joe, Forrest, Jr. Greenville, NC 27858-5621 (US) MOST, Elmer, Edwin, Jr. Durham, NC 27707-5276 (US) PAI, Girish, Anant Matthews, NC 28105-8843 (US) (74) Representative: Jones, Alan John, et al  CARPMAELS & RANSFORD 43 Bloomsbury Square London, WC1A 2RA London, WC1A 2RA (GB)