PULP ALKALI ADDITION PROCESS FOR HIGH CONSISTENCY OXYGEN DELIGNIFICATION - Patent 0539381

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EP 0 539 381 A1

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(43)	Date of publication:
	05.05.1993 Bulletin 1993/18

(21)	Application number: 91909663.0

(22)	Date of filing: 18.04.1991

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International Patent Classification (IPC):

D21C 9/ 00^{( . )}
D21C 9/ 147^{( . )}

D21C 9/ 10^{( . )}

(86)	International application number:
	PCT/US1991/002673

(87)	International publication number:
	WO 1992/018689 (29.10.1992 Gazette 1992/27)

(84)	Designated Contracting States:
	AT BE CH DE DK ES FR GB GR IT LI LU NL SE

(71)	Applicant: UNION CAMP PATENT HOLDING, INC.
	Wayne, NJ 07470 (US)

(72)	Inventor:
	GRIGGS, Bruce, F. Columbia, SC 29223 (US)

(74)	Representative: Timmermans, Anthonius C.Th., Ir.
	European Patent Attorneys Octrooibureau Zuid P.O. Box 2287 NL-5600 CG Eindhoven NL-5600 CG Eindhoven (NL)

(54)	PULP ALKALI ADDITION PROCESS FOR HIGH CONSISTENCY OXYGEN DELIGNIFICATION