METHODS TO REDUCE METALS CONTENT OF BLEACHED PULP WHILE REDUCING BLEACHING COST IN A CHEMICAL PULPING PROCESS - Patent 2553165

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EP 2 553 165 A2

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(88)	Date of publication A3:
	12.01.2012

(43)	Date of publication:
	06.02.2013 Bulletin 2013/06

(21)	Application number: 11766310.4

(22)	Date of filing: 23.02.2011

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International Patent Classification (IPC):

D21C 3/04^(2006.01)
D06M 13/432^(2006.01)

D21C 3/20^(2006.01)

(86)	International application number:
	PCT/US2011/025845

(87)	International publication number:
	WO 2011/126613 (13.10.2011 Gazette 2011/41)

(84)	Designated Contracting States:
	AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

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Priority:

31.03.2010 US 751143

(71)	Applicant: Chemstone, Inc.
	Greenville, SC 29615 (US)

(72)	Inventor:
	BLACKSTONE, Michael Jacksonville, Florida 32204 (US)

(74)	Representative: Schlief, Thomas P.
	Patentanwälte Canzler & Bergmeier Friedrich-Ebert-Straße 84 85055 Ingolstadt 85055 Ingolstadt (DE)

(54)	METHODS TO REDUCE METALS CONTENT OF BLEACHED PULP WHILE REDUCING BLEACHING COST IN A CHEMICAL PULPING PROCESS