Invention Grant
- Patent Title: Method for the production of paper, cardboard and card
- Patent Title (中): 生产纸张,纸板和卡片的方法
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Application No.: US12065688Application Date: 2006-09-05
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Publication No.: US07918965B2Publication Date: 2011-04-05
- Inventor: Marc Leduc , Oliver Koch , Simon Champ , Rainer Blum , Andreas Merkel , Knut Menke
- Applicant: Marc Leduc , Oliver Koch , Simon Champ , Rainer Blum , Andreas Merkel , Knut Menke
- Applicant Address: DE Ludwigshafen
- Assignee: BASF Aktiengesellschaft
- Current Assignee: BASF Aktiengesellschaft
- Current Assignee Address: DE Ludwigshafen
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: DE102005043800 20050913
- International Application: PCT/EP2006/066019 WO 20060905
- International Announcement: WO2007/031442 WO 20070322
- Main IPC: D21H21/10
- IPC: D21H21/10

Abstract:
Process for the production of paper, board and cardboard by draining a paper stock with sheet formation in the presence of a retention aid system comprising (i) at least one polymer comprising vinylamine units, in the form of the free bases, of the salts and/or in quaternized form, as the sole cationic polymer, (ii) at least one linear, anionic polymer having a molar mass Mw of at least 1 million and/or at least one branched, anionic, water-soluble polymer and/or bentonite and/or silica gel and (iii) at least one particulate, anionic, crosslinked, organic polymer having a mean particle diameter of at least 1 μm and an intrinsic viscosity of less than 3 dl/g, and use of the retention aid system comprising the components (i), (ii) and (iii) as an additive in the production of paper, board and cardboard.
Public/Granted literature
- US20080196852A1 Method For the Production of Paper, Cardboard and Card Public/Granted day:2008-08-21
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