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    Method for dissolving cationic starch, papermaking agent and its use
    5.
    发明授权
    Method for dissolving cationic starch, papermaking agent and its use 有权
    溶解阳离子淀粉，造纸剂及其用途的方法

    公开(公告)号：US09580865B2

    公开(公告)日：2017-02-28

    申请号：US14387369

    申请日：2013-03-22

    申请人： KEMIRA OYJ

    发明人： Asko Karppi ,  Esko Tirronen

    IPC分类号： C08L79/02 ,  C08L3/00 ,  D21H17/29 ,  D21H17/45 ,  D21H17/54 ,  D21H21/10 ,  C08L3/08 ,  D21H17/37 ,  D21H17/44 ,  D21H17/55 ,  D21H17/56 ,  D21H21/06 ,  D21H21/18 ,  C08G73/02

    CPC分类号： D21H17/29 ,  C08G73/022 ,  C08G73/0286 ,  C08G73/0293 ,  C08L3/08 ,  C08L79/02 ,  D21H17/375 ,  D21H17/44 ,  D21H17/45 ,  D21H17/455 ,  D21H17/54 ,  D21H17/55 ,  D21H17/56 ,  D21H21/06 ,  D21H21/10 ,  D21H21/18

    摘要： The invention relates to a method for dissolving cationic starch. In the method is obtained an aqueous polyelectrolyte solution comprising a synthetic cationic polymer, which has a charge density value of at least 0.1 meq/g, determined at pH3, the concentration of the cationic polymer in the polyelectrolyte solution being >2.5 weight-%, and the aqueous polyelectrolyte solution is brought together with cationic starch having a degree of substitution, DS, >0.1. The cationic starch is dissolved to the polyelectrolyte solution by heating and/or mixing. The invention relates also to a papermaking agent comprising 2-40 weight-% of synthetic cationic polymer which has a charge density value of at least 0.1 meq/g, determined at p H 3, and 2.5-25 weight-% cationic starch having degree of substitution, DS, >0.1. The papermaking agent is in slurry form and has a viscosity of 50-20 000 m Pas, measured at 25° C. with Brookfield DVI+ viscometer.

    摘要翻译： 本发明涉及一种溶解阳离子淀粉的方法。 在该方法中，获得包含合成阳离子聚合物的水溶液聚电解质溶液，该聚合物的电荷密度值至少为0.1meq / g，在pH3下测定，阳离子聚合物在聚电解质溶液中的浓度> 2.5重量％ 并且将聚合电解质水溶液与具有取代度DS'> 0.1的阳离子淀粉一起使用。 通过加热和/或混合将阳离子淀粉溶解到聚电解质溶液中。 本发明还涉及一种造纸剂，其包含2-40重量％的合成阳离子聚合物，其电荷密度值至少为0.1meq / g，在p H 3和2.5-25重量％阳离子淀粉具有度 的替代，DS，> 0.1。 造纸剂为浆液形式，并且在25℃下用Brookfield DVI +粘度计测量粘度为50-20,000mPa·s。

    Furnish pretreatment to improve paper strength aid performance in papermaking
    7.
    发明授权
    Furnish pretreatment to improve paper strength aid performance in papermaking 有权
    提供预处理以提高造纸中纸张强度的帮助性能

    公开(公告)号：US09506202B2

    公开(公告)日：2016-11-29

    申请号：US14537055

    申请日：2014-11-10

    申请人： NALCO COMPANY

    发明人： Yulin Zhao ,  Jun Li ,  Qing Long Rao ,  Weiguo Cheng

    IPC分类号： D21H21/20 ,  D21H17/37 ,  D21H17/44 ,  D21C5/02 ,  D21H17/28 ,  D21H17/00 ,  D21H21/18 ,  D21H11/14 ,  D21H23/14 ,  D21H17/45

    CPC分类号： D21H21/20 ,  D21H11/14 ,  D21H17/28 ,  D21H17/375 ,  D21H17/45 ,  D21H17/72 ,  D21H21/18 ,  D21H23/14

    摘要： The invention is directed towards methods, compositions, and apparatus for increasing the strength of paper made out of a furnish having a large proportion of OCC. The method involves the following steps: 1) Providing a paper furnish having a large amount of OCC in it, 2) adding strength promoter to the furnish prior to adding a strength agent to the furnish, 3) adding a strength agent to the furnish, and 4) making a paper product from the furnish. This method allows cheap OCC material to be used in a papermaking process without the quality problems that the anionic trash in OCC typically causes. Thus paper products having low costs and high quality can be produced.

    摘要翻译： 本发明涉及用于增加由具有大比例的OCC的配料制成的纸的强度的方法，组合物和装置。 该方法包括以下步骤：1）提供其中含有大量OCC的纸配料; 2）在向配料中加入强度剂之前，向配料中加入强度促进剂，3）向配料中加入强度剂， 和4）从配料制造纸制品。 这种方法允许在造纸过程中使用便宜的OCC材料，而没有OCC中的阴离子垃圾通常引起的质量问题。 因此，可以生产成本低，质量高的纸制品。

    PROCESS FOR THE MANUFACTURE OF PAPER AND PAPERBOARD
    9.
    发明申请
    PROCESS FOR THE MANUFACTURE OF PAPER AND PAPERBOARD 审中-公开
    纸和纸板的制造工艺

    公开(公告)号：US20150345081A1

    公开(公告)日：2015-12-03

    申请号：US14760381

    申请日：2014-01-09

    申请人： BASF SE

    发明人： Christopher Alan GRAY ,  Antonius MOORMANN-SCHMITZ ,  Hubert MEIXNER ,  Luis Miguel SANCHEZ CERRO ,  Thomas MUEHLENBERND ,  Christian JEHN-RENDU

    IPC分类号： D21H17/00 ,  D21H17/45 ,  D21H17/68 ,  D21H11/20

    CPC分类号： D21H17/74 ,  D21H11/20 ,  D21H17/375 ,  D21H17/44 ,  D21H17/45 ,  D21H17/55 ,  D21H17/56 ,  D21H17/68 ,  D21H21/10 ,  D21H23/04 ,  D21H23/18

    摘要： Process for the Manufacture of Paper and Paperboard The present invention relates to a process of making paper or paperboard in which a cellulosic thin stock is provided and subjected to one or more shear stages and then drained and a moving screen to form a sheet which is dried, wherein the process employs a retention system which is applied to the thin stock, said retention system comprising as components i) a blend of different cationic polymers and ii) a microparticulate material, in which the blend of cationic polymers comprises, a) a cationic polymer having a charge density of from 0.5 and below 3 mEq per gram and a molar mass of greater than 700,000 Da, which cationic polymer is selected from polymers containing vinyl amine units and polyethylenimine, b) a cationic polymer having a charge density of below 3 mEq per gram and an intrinsic viscosity of at least 3 dl/g, wherein one of the components of the retention system is dosed into the thin stock after the final shearing stage and the other is dosed into the thin stock before the final shearing stage.

    摘要翻译： 纸和纸板的制造方法技术领域本发明涉及一种制造纸或纸板的方法，其中提供纤维素薄料并经受一个或多个剪切阶段然后排干，并移动筛网以形成干燥的片材 其中所述方法采用应用于稀浆的保留系统，所述保留系统包含作为组分的i）不同阳离子聚合物的共混物和ii）微粒材料，其中阳离子聚合物的共混物包含：a）阳离子 电荷密度为0.5〜3mEq / g，摩尔质量大于700,000Da的聚合物，该阳离子聚合物选自含有乙烯基胺单元和聚乙烯亚胺的聚合物，b）电荷密度低于3的阳离子聚合物 mEq /克，特性粘度至少为3dl / g，其中保留体系的组分之一在最终剪切阶段之后投入稀浆中 另一个在最终剪切阶段之前投入稀薄的原料。