METHOD OF MODIFYING STARCH FOR INCREASED PAPERMACHINE RETENTION AND DRAINAGE PERFORMANCE - Patent 2238294

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EP 2 238 294 A1

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(43)	Date of publication:
	13.10.2010 Bulletin 2010/41

(21)	Application number: 09705709.5

(22)	Date of filing: 27.01.2009

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International Patent Classification (IPC):

D21H 17/13^(2006.01)
D21H 17/28^(2006.01)
D21H 21/10^(2006.01)
D21H 17/69^(2006.01)

D21H 17/24^(2006.01)
D21H 17/29^(2006.01)
D21H 17/68^(2006.01)
D06M 13/513^(2006.01)

(86)	International application number:
	PCT/US2009/000538

(87)	International publication number:
	WO 2009/097111 (06.08.2009 Gazette 2009/32)

(84)	Designated Contracting States:
	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 SE SI SK TR
	Designated Extension States:
	AL BA RS

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Priority:

28.01.2008 US 62586 P

(71)	Applicant: Hercules Incorporated
	Wilmington, DE 19894-0001 (US)

(72)	Inventors:
	HARRINGTON, John, C. Newark, DE 19711 (US) ANDERSON, Jason, E. Elkton, MD 21921 (US)

(74)	Representative: Bülle, Jan et al
	Kutzenberger & Wolff Patentanwaltssozietät Theodor-Heuss-Ring 23 50668 Köln 50668 Köln (DE)

(54)	METHOD OF MODIFYING STARCH FOR INCREASED PAPERMACHINE RETENTION AND DRAINAGE PERFORMANCE