METHOD OF BLEACHING PULP WITH CHLORINE-FREE CHEMICALS - Patent 0687321

(19)

(11)

EP 0 687 321 A1

(12)

(43)	Date of publication:
	20.12.1995 Bulletin 1995/51

(21)	Application number: 93910051.0

(22)	Date of filing: 25.05.1993

(51)

International Patent Classification (IPC):

D21C^{( . )}
D21C 9/ 10^{( . )}
D21C 9/ 153^{( . )}

D21C 9/ 02^{( . )}
D21C 9/ 147^{( . )}
D21C 9/ 16^{( . )}

(86)	International application number:
	PCT/FI1993/000222

(87)	International publication number:
	WO 1994/020673 (15.09.1994 Gazette 1994/21)

(84)	Designated Contracting States:
	AT DE ES FR PT SE

(30)

Priority:

03.03.1993 FI 19930000954

(60)	Divisional application:
	98113684.9 / 0884415

(71)	Applicant: A. AHLSTROM CORPORATION
	FIN-29600 Noormarkku (FI)

(72)	Inventors:
	HENRICSON, Kaj FIN-48100 Kotka (FI) STROMBERG, Bertil Glens Falls, NY 12801 (US)

(74)	Representative: Hansen, Bernd, Dr. Dipl.-Chem., et al
	Hoffmann, Eitle & Partner, Patentanwälte, Arabellastrasse 4 D-81925 München D-81925 München (DE)

(54)	METHOD OF BLEACHING PULP WITH CHLORINE-FREE CHEMICALS