(19)
(11) EP 0 920 548 A1

(12)

(43) Date of publication:
09.06.1999 Bulletin 1999/23

(21) Application number: 97940587.0

(22) Date of filing: 22.08.1997
(51) International Patent Classification (IPC): 
D01D 5/ 08( . )
D01D 5/ 18( . )
D04H 1/ 56( . )
D04H 3/ 16( . )
 D01D 5/ 098( . )
D01F 2/ 00( . )
D04H 3/ 03( . )
(86) International application number:
PCT/US1997/014762
(87) International publication number:
WO 1998/007911 (26.02.1998 Gazette 1998/08)
(84) Designated Contracting States:
AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

(30) Priority: 23.08.1996 US 19960023909P
23.08.1996 US 19960024462P

(71) Applicant: WEYERHAEUSER COMPANY
Tacoma, WA 98477-0001 (US)

(72) Inventors:
  • LUO, Menghui
    Federal Way, WA 98003 (US)
  • ROSCELLI, Vincent, A.
    Edgewood, WA 98372 (US)
  • NEOGI, Amar, N.
    Seattle, WA 98155 (US)
  • JEWELL, Richard, A.
    Bellevue, WA 98006 (US)

(74) Representative: Spall, Christopher John 
BARKER BRETTELL 138 Hagley Road
Edgbaston Birmingham B16 9PW
Edgbaston Birmingham B16 9PW (GB)

   


(54) LYOCELL FIBERS AND PROCESS FOR THEIR PREPARATION