TREATMENT OF PULP WITH A CHELATING AGENT WITHOUT USING A BLEACHING TOWER - Patent 0951599

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(11)

EP 0 951 599 A1

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(43)	Date of publication:
	27.10.1999 Bulletin 1999/43

(21)	Application number: 97912616.0

(22)	Date of filing: 06.11.1997

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International Patent Classification (IPC):

D21C 9/ 02^{( . )}

D21C 9/ 10^{( . )}

(86)	International application number:
	PCT/SE1997/001853

(87)	International publication number:
	WO 1998/029597 (09.07.1998 Gazette 1998/27)

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

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Priority:

03.01.1997 SE 19970000030

(71)	Applicant: SUNDS DEFIBRATOR INDUSTRIES AKTIEBOLAG
	851 94 Sundsvall (SE)

(72)	Inventors:
	GERMGARD, Ulf S-865 31 Alnö (SE) LINDQUIST, Jonas S-952 42 Kalix (SE)

(74)	Representative: Sundqvist, Hans
	Sunds Defibrator Industries Aktiebolag Patents Dept. Strandbergsgatan 61 112 51 Stockholm 112 51 Stockholm (SE)

(54)	TREATMENT OF PULP WITH A CHELATING AGENT WITHOUT USING A BLEACHING TOWER