(19)
(11) EP 0 500 674 A1

(12)

(43) Date of publication:
02.09.1992 Bulletin 1992/36

(21) Application number: 90916835.0

(22) Date of filing: 06.11.1990
(51) International Patent Classification (IPC): 
D21C 3/ 22( . )
D21B 1/ 16( . )
 D21B 1/ 02( . )
D21C 1/ 00( . )
(86) International application number:
PCT/SE1990/000721
(87) International publication number:
WO 1991/006700 (16.05.1991 Gazette 1991/11)
(84) Designated Contracting States:
AT DE ES FR GB IT NL SE

(30) Priority: 06.11.1989 SE 19890003710

(71) Applicant: STFI
S-114 86 Stockholm (SE)

(72) Inventors:
  • ENGSTRAND, Per
    S-183 46 Täby (SE)
  • HAMMAR, Lars-Ake
    S-123 48 Farsta (SE)
  • SJÖGREN, Birger
    S-136 90 Handen (SE)
  • SVENSSON, Börje
    S-122 35 Enskede (SE)
  • HTUN, Myat
    S-162 24 Vällingby (SE)

(74) Representative: Onn, Thorsten, et al 
AB STOCKHOLMS PATENTBYRA Box 23101
S-104 35 Stockholm
S-104 35 Stockholm (SE)

   


(54) A METHOD OF PRODUCING CELLULOSIC PULP