Invention Grant
US08404083B2 Process for increasing the dry strength of paper, board and cardboard
有权
提高纸张，纸板和纸板干燥强度的工艺
- Patent Title: Process for increasing the dry strength of paper, board and cardboard
- Patent Title (中): 提高纸张，纸板和纸板干燥强度的工艺
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Application No.: US13058217Application Date: 2009-08-10
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Publication No.: US08404083B2Publication Date: 2013-03-26
- Inventor: Hans-Joachim Haehnle , Christian Jehn-Rendu , Rainer Blum , Ellen Krueger , Norbert Schall , Martin Ruebenacker
- Applicant: Hans-Joachim Haehnle , Christian Jehn-Rendu , Rainer Blum , Ellen Krueger , Norbert Schall , Martin Ruebenacker
- Applicant Address: DE Ludwigshafen
- Assignee: BASF SE
- Current Assignee: BASF SE
- Current Assignee Address: DE Ludwigshafen
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: EP08162545 20080818
- International Application: PCT/EP2009/060331 WO 20090810
- International Announcement: WO2010/020551 WO 20100225
- Main IPC: D21H11/00
- IPC: D21H11/00
Abstract:
Process for the production of paper, board and cardboard having high dry strength by addition of at least one water-soluble (a) polymer comprising vinylamine units and at least one (b) polymer comprising ethylenimine units and at least one water-soluble polymeric anionic compound to a paper stock, draining of the paper stock with sheet formation and drying of the paper products, the water-soluble cationic polymers (a) and (b) being metered in any sequence or as a mixture into a paper stock, and papers which are obtainable by this process.
Public/Granted literature
- US20110132559A1 PROCESS FOR INCREASING THE DRY STRENGTH OF PAPER, BOARD AND CARDBOARD Public/Granted day:2011-06-09
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