USE OF MODIFIED LIGNIN AS A WET END STRENGTH ADDITIVE - Patent 4396409

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EP 4 396 409 A1

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(43)	Date of publication:
	10.07.2024 Bulletin 2024/28

(21)	Application number: 22793828.9

(22)	Date of filing: 19.08.2022

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International Patent Classification (IPC):

D21H 17/14^(2006.01)
D21H 17/37^(2006.01)
D21H 17/45^(2006.01)
D21H 17/56^(2006.01)
D21H 21/20^(2006.01)

D21H 17/23^(2006.01)
D21H 17/44^(2006.01)
D21H 17/55^(2006.01)
D21H 21/18^(2006.01)
D21H 23/04^(2006.01)

(52)	Cooperative Patent Classification (CPC):
	D21H 17/23; D21H 17/14; D21H 17/375; D21H 17/44; D21H 17/45; D21H 17/55; D21H 17/56; D21H 21/18; D21H 21/20; D21H 23/04

(86)	International application number:
	PCT/IB2022/000489

(87)	International publication number:
	WO 2023/031667 (09.03.2023 Gazette 2023/10)

(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
	Designated Extension States:
	BA ME
	Designated Validation States:
	KH MA MD TN

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Priority:

30.08.2021 US 202163238627 P

(71)	Applicant: Ecolab USA Inc.
	St. Paul, MN 55102 (US)

(72)	Inventors:
	JORDAN, David Steven Evanston, IL 60202 (US) HUANG, Hequing Naperville, IL 60564 (US) CHENG, Weiguo Naperville, IL 60564 (US)

(74)	Representative: HGF
	HGF Limited 1 City Walk Leeds LS11 9DX Leeds LS11 9DX (GB)

(54)	USE OF MODIFIED LIGNIN AS A WET END STRENGTH ADDITIVE