发明授权
- 专利标题: System and process for improving paper and paper board
- 专利标题(中): 改进纸张和纸板的系统和过程
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申请号: US14365589申请日: 2012-12-17
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公开(公告)号: US08992732B2公开(公告)日: 2015-03-31
- 发明人: Tom Lindström , Anna Svedberg , Mikael Ankerfors
- 申请人: Innventia AB
- 申请人地址: SE Stockholm
- 专利权人: Innventia AB
- 当前专利权人: Innventia AB
- 当前专利权人地址: SE Stockholm
- 代理机构: Knobbe, Martens, Olson & Bear, LLP
- 优先权: SE1151205 20111215
- 国际申请: PCT/SE2012/051417 WO 20121217
- 国际公布: WO2013/089638 WO 20130620
- 主分类号: D21H17/45
- IPC分类号: D21H17/45 ; D21H17/00 ; D21H17/37 ; D21H17/06 ; D21H17/67 ; D21H17/68 ; D21H21/10 ; D21H17/42
摘要:
The invention relates to a process for making paper or paper board comprising forming a cellulosic suspension, flocculating the suspension, draining the suspension on a device to form a sheet and then drying the sheet, wherein the suspension is flocculated using a formation improving 3-component flocculation system comprising a) a linear cationic or ampoteric co-polymer of: i) acrylamide, and ii) a substance with formula (I) with a halide as counter-ion; b) at least one water soluble component chosen from the group of anionic polyacrylamide, non-ionic polyacrylamide and polyethyleneoxide; and c) inorganic microparticles, whereby the flocculation system does not contain a wafer-dispersible or branched anionic organic polymer. The invention also relates to use of the flocculation/retention system in the manufacture of paper or paper board, and to paper and paper board thus produced.
公开/授权文献
- US20140345817A1 SYSTEM AND PROCESS FOR IMPROVING PAPER AND PAPER BOARD 公开/授权日:2014-11-27
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