(19)

(11)

EP 1 155 173 A1

(12)

(43) Date of publication: 21.11.2001 Bulletin 2001/47 (21) Application number: 99966245.5 (22) Date of filing: 15.12.1999

(51) International Patent Classification (IPC)7: D01F 6/70, D01F 1/10 (86) International application number: PCT/US9929/707 (87) International publication number: WO 0036/195 (22.06.2000 Gazette 2000/25)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 16.12.1998 JP 37580498 (71) Applicant: DU PONT-TORAY COMPANY, LTD. Chuo-ku,Tokyo 103-0023 (JP)	(72) Inventor: UEMURA, Yuji Shiga 520 (JP) (74) Representative: Freiherr von Wittgenstein, Arved, Dr. et al Patentanwälte Abitz & PartnerPostfach 86 01 09 81628 München 81628 München (DE)