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    SCHONENDES BLEICHMITTEL
    23.
    发明公开
    SCHONENDES BLEICHMITTEL 有权

    公开(公告)号：EP2440644A1

    公开(公告)日：2012-04-18

    申请号：EP10722094.9

    申请日：2010-05-28

    申请人： Henkel AG & Co. KGaA

    发明人： NORDSKOG, Anette ,  RYBINSKI VON, Wolfgang ,  HÄTZELT, André ,  ERPENBACH, Siglinde ,  BALLAUFF, Matthias ,  POLZER, Frank

    IPC分类号： C11D3/37 ,  C11D3/39 ,  C08K5/34 ,  D21C9/16

    CPC分类号： C11D3/3935 ,  C08K5/0091 ,  C11D3/3788 ,  C11D3/3932 ,  D21C9/1036 ,  D21C9/1042 ,  D21C9/163

    摘要： The aim of the invention is to reduce the damage to cellulosic material during the bleaching treatment of cellulosic material by using catalysts with bleaching activity, without significantly impacting the bleaching performance in the process. This was achieved largely by way of a method for bleaching cellulosic material in the presence of a peroxygen-containing bleaching agent and a bleach-boosting transition metal complex, which is carried out in the presence of spherical polyelectrolyte brushes. The spherical polyelectrolyte brushes preferably contain the transition metal complex in a colloidally bound manner.

    摘要翻译： 本发明的目的是通过使用具有漂白活性的催化剂在纤维素材料的漂白处理期间减少对纤维素材料的损害，而不显着影响该方法中的漂白性能。 这主要通过在含有过氧化物的漂白剂和促进漂白剂的过渡金属络合物存在下，在球形聚电解质刷存在下进行漂白纤维素材料的方法来实现。 球形聚电解质刷优选以胶体结合的方式含有过渡金属配合物。

    PROCESS FOR PRODUCING BLEACHED PULP
    24.
    发明授权
    PROCESS FOR PRODUCING BLEACHED PULP 有权
    用于漂白纸浆的制备

    公开(公告)号：EP2022887B1

    公开(公告)日：2012-04-18

    申请号：EP07743365.4

    申请日：2007-05-15

    申请人： Mitsubishi Gas Chemical Company, Inc.

    发明人： TOMODA, Iori ,  UCHIDA, Yosuke ,  NAGATANI, Hiroyuki ,  KAWAE, Ayano ,  CHO, Takahiro ,  UESUGI, Wakana ,  KOSHITSUKA, Tetsuo

    IPC分类号： D21C9/16 ,  D21C9/10 ,  D21C9/14

    CPC分类号： D21C9/144 ,  D21C9/1036 ,  D21C9/1042 ,  D21C9/1084 ,  D21C9/163

    摘要： It is intended to provide a process for producing bleached pulp in which unbleached pulp obtained by cooking a lignocellulose material is subjected to alkali/oxygen bleaching, treated with peroxomonosulfuric acid, and further a multi-stage chlorine-free bleaching treatment starting from a chlorine dioxide bleaching treatment is carried out; a process for producing bleached pulp in which the unbleached pulp is subjected to alkali/oxygen bleaching, and then subjected to a chlorine-free bleaching treatment or a totally chlorine-free bleaching treatment to bleach the pulp so as to have a whiteness of 70 to 89%, then the pulp is treated with peroxomonosulfuric acid; and paper produced at a papermaking pH of 6 or below using the bleached pulp obtained by such a production process. A process for efficiently producing bleached pulp in which the brown color is improved in the chlorine-free bleaching and the bleaching cost is reduced and paper produced in an acidic papermaking condition using the bleached pulp are provided.

    MODIFIED CELLULOSE FROM CHEMICAL KRAFT FIBER AND METHODS OF MAKING AND USING THE SAME
    25.
    发明公开
    MODIFIED CELLULOSE FROM CHEMICAL KRAFT FIBER AND METHODS OF MAKING AND USING THE SAME 有权
    变形纤维素AUS KRAFTZELLSTOFF，IHRE HERSTELLUNG UND VERWENDUNG

    公开(公告)号：EP2435629A2

    公开(公告)日：2012-04-04

    申请号：EP10724941.9

    申请日：2010-05-28

    申请人： GP Cellulose GmbH

    发明人： NONNI, Arthur, J. ,  COURCHENE, Charles, E. ,  SLONE, Christopher, Michael ,  ABITZ, Peter, R.

    IPC分类号： D21C9/10 ,  D21C9/16

    CPC分类号： D21C9/163 ,  A61F13/53 ,  D21C9/002 ,  D21C9/1036 ,  D21C9/144 ,  D21H11/04 ,  D21H11/16 ,  D21H11/20 ,  Y10T428/298

    摘要： A modified kraft pulp fiber with unique properties is provided. The modified fiber can be a modified bleached kraft fiber that is almost indistinguishable from its conventional counterpart, except that it has a low degree of polymerization (DP). Methods for making the modified fiber and products made from it are also provided. The method can be a one step acidic, iron catalyzed peroxide treatment process that can be incorporated into a single stage of a multi-stage bleaching process. The products can be chemical cellulose feedstocks, microcrystalline cellulose feedstocks, fluff pulps and products made from them.

    摘要翻译： 提供了具有独特性质的改性牛皮纸浆纤维。 改性纤维可以是经修改的漂白牛皮纸纤维，其与常规对应物几乎无法区分，只是它具有低聚合度（DP）。 还提供了制备改性纤维的方法和由其制成的产品。 该方法可以是一步酸性，铁催化的过氧化物处理方法，其可以并入多阶段漂白方法的单一阶段。 产品可以是化学纤维素原料，微晶纤维素原料，绒毛浆和由它们制成的产品。