(19)
(11) EP 1 276 930 A2

(12)

(88) Date of publication A3:
14.03.2002

(43) Date of publication:
22.01.2003 Bulletin 2003/04

(21) Application number: 01929681.3

(22) Date of filing: 20.04.2001
(51) International Patent Classification (IPC)7: D21H 17/14, D21H 17/29, D21H 17/44, D21H 19/44, D21H 21/16
(86) International application number:
PCT/FI0100/386
(87) International publication number:
WO 0108/1679 (01.11.2001 Gazette 2001/44)
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 20.04.2000 FI 20000957

(71) Applicant: Raisio Chemicals Ltd.
21200 Raisio (FI)

(72) Inventors:
  • VIHERVAARA, Tapio
    FIN-20720 Turku (FI)
  • LUUKKONEN, Kari
    FIN-21200 Raisio (FI)
  • NIINIVAARA, Veikko
    FIN-21200 Raisio (FI)

(74) Representative: Heikkilä, Hannes Antero 
Turun Patenttitoimisto Oy,P.O. Box 99
20521 Turku
20521 Turku (FI)

   


(54) ADDITIVE FOR PAPER MAKING, ITS PREPARATION AND USE