Invention Grant
- Patent Title: Man-made cellulosic fiber and nonwoven product or fabric comprising the cellulosic fiber
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Application No.: US16344896Application Date: 2017-10-27
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Publication No.: US11313075B2Publication Date: 2022-04-26
- Inventor: Jörg Kühn , Ingo Bernt , Walter Roggenstein , Bernd Seger
- Applicant: KELHEIM FIBRES GMBH , GLATFELTER GERNSBACH GMBH
- Applicant Address: DE Kelheim; DE Gernsbach
- Assignee: KELHEIM FIBRES GMBH,GLATFELTER GERNSBACH GMBH
- Current Assignee: KELHEIM FIBRES GMBH,GLATFELTER GERNSBACH GMBH
- Current Assignee Address: DE Kelheim; DE Gernsbach
- Agency: Venable LLP
- Priority: EP16196098 20161027
- International Application: PCT/EP2017/077598 WO 20171027
- International Announcement: WO2018/078094 WO 20180503
- Main IPC: D06M15/356
- IPC: D06M15/356 ; D04H3/013 ; D21H13/08 ; D21C9/00 ; D01F2/08 ; D04H1/4258 ; D21H11/20

Abstract:
The present invention relates to a modified cellulosic fiber that comprises anionic moieties in an amount of more than 0.25 mol/kg of dry fiber and has applied thereon a polymeric modifying agent in an amount of from 0.5 wt. % to 5.0 wt. %, based on dry fiber, the polymeric modifying agent comprising cationic moieties with a charge of at least 1.5 meq per gram of polymer and the molar ratio of anionic moieties to cationic moieties contained in the fiber is in the range of from 1:1 to 25:1. The fiber according to the present invention is characterized in that the anionic moieties are incorporated in the fiber and are from carboxymethylcellulose, and that the polymeric modifying agent comprising cationic moieties is selected from the group consisting of polydiallyldimethylammonium chloride (poly-DADMAC), poly(acrylamide-co-diallyldimethylammonium chloride) (PAM-DADMAC) and mixtures thereof. The invention furthermore relates to a nonwoven product or fabric comprising the modified cellulosic fiber.
Public/Granted literature
- US20190257029A1 MAN-MADE CELLULOSIC FIBER AND NONWOVEN PRODUCT OR FABRIC COMPRISING THE CELLULOSIC FIBER Public/Granted day:2019-08-22
Information query