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    Process for the bleaching of paper pulp
    181.
    发明申请
    Process for the bleaching of paper pulp 审中-公开
    纸浆漂白工艺

    公开(公告)号：US20110067831A1

    公开(公告)日：2011-03-24

    申请号：US12992316

    申请日：2009-05-25

    Applicant: Pierre Dournel

    Inventor： Pierre Dournel

    IPC: D21C9/16

    CPC classification number: D21C9/163 ,  D21C9/1036 ,  D21C9/1042

    Abstract: Process for the bleaching of paper pulp in which an aqueous suspension of paper pulp is subjected to a bleaching treatment with hydrogen peroxide in the presence of magnesium hydroxide and of at least one poly-α-hydroxyacrylic acid, its salt or their mixture.

    Abstract translation: 漂白纸浆的方法，其中纸浆的水性悬浮液在氢氧化镁和至少一种聚-α-羟基丙烯酸，其盐或它们的混合物的存在下用过氧化氢进行漂白处理。

    Method for determining chemical pulp kappa number with visible-near infrared spectrometry
    183.
    发明授权
    Method for determining chemical pulp kappa number with visible-near infrared spectrometry 有权
    用可见光近红外光谱法测定化学纸浆卡帕值的方法

    公开(公告)号：US07604712B2

    公开(公告)日：2009-10-20

    申请号：US11364275

    申请日：2006-03-01

    Applicant: Thanh P. Trung ,  Stephen P. A. Betts ,  Denys F. Leclerc

    Inventor： Thanh P. Trung ,  Stephen P. A. Betts ,  Denys F. Leclerc

    IPC: D21C7/14

    CPC classification number: D21C3/228 ,  D21C9/1036 ,  D21C9/1052 ,  G01N21/3563 ,  G01N21/359 ,  G01N33/343 ,  G01N2021/3155

    Abstract: A method for the determination of a cellulosic-fibre property, namely, residual lignin content or Kappa number of chemical pulp, with the aid of a spectroscopic technique obtained over a range covering the visible and the near-infrared regions of the electromagnetic spectrum, comprising exposing the wet fibres to a light source covering a range in the visible region of 350 nm to 750 nm and a range in the near-infrared of 1100 nm to 2400 nm, reflecting light from the wet fibres, establishing a spectrum, comparing the spectrum with a known spectrum of the property and evaluating the comparison; the method has particular utility in a pulp manufacture line; an apparatus is described for carrying out the method.

    Abstract translation: 借助于在覆盖电磁光谱的可见光和近红外区域的范围内获得的光谱技术来确定纤维素纤维性质即化学纸浆的残留木质素含量或卡伯值的方法，包括 将湿纤维暴露于覆盖350nm至750nm的可见区域的范围内的光源和近红外线范围为1100nm至2400nm，反射来自湿纤维的光，建立光谱，比较光谱 具有已知的属性谱和评估比较; 该方法在纸浆生产线中具有特殊用途; 描述了用于执行该方法的装置。

    Combined process of peroxide bleaching of wood pulps and addition of optical brightening agents
    184.
    发明申请
    Combined process of peroxide bleaching of wood pulps and addition of optical brightening agents 有权
    木浆的过氧化物漂白和光学增亮剂的组合过程

    公开(公告)号：US20090205795A1

    公开(公告)日：2009-08-20

    申请号：US12320944

    申请日：2009-02-09

    Applicant: Yonghao Ni ,  Zhibin He

    Inventor： Yonghao Ni ,  Zhibin He

    IPC: D21C9/16 ,  D21H21/32

    CPC classification number: D21C9/163 ,  D21C9/1036 ,  D21C9/1042 ,  D21H21/30 ,  D21H21/32

    Abstract: A process for improving optical properties of high-yield pulp (HYP) for producing paper products with superior brightness. Optical brightening agents (OBAs) can effectively improve the optical properties of high-yield pulp (HYP). The present process involves incorporating the OBAs into the alkaline peroxide bleaching process. By combining peroxide bleaching with an optical brightening agent, one can decrease the bleaching cost to reach the same brightness target. Some key advantages of adding OBA to HYP at the pulp mill over the conventional wet-end addition of OBA include: i) the quenching effect on OBA by the wet-end cationic polymers such as PEI is decreased by fixing OBA on HYP fibers; ii) the negative impact of metal ions in the white water system on the OBA performance is minimized when OBA is pre-adsorbed and fixed on HYP fibers; iii) the photo-yellowing (color reversion) of HYP and HYP-containing paper sheets is decreased when more OBA is on HYP fibers to protect them from harmful UV radiation.

    Abstract translation: 用于改善高产量纸浆（HYP）的光学性能的方法，用于生产具有优异亮度的纸制品。 荧光增白剂（OBA）可有效提高高产量纸浆（HYP）的光学性能。 本方法包括将OBAs掺入碱性过氧化物漂白工艺中。 通过将过氧化物漂白与荧光增白剂结合，可以降低达到相同亮度目标的漂白成本。 在OBA常规的湿法添加方面，在纸浆厂加入OBA的一些关键优点包括：i）通过将OBA固定在HYP纤维上，通过湿式阳离子聚合物如PEI对OBA的淬灭作用降低; ii）当OBA预吸附并固定在HYP纤维上时，白水系统中金属离子对OBA性能的负面影响被最小化; iii）当更多OBA在HYP纤维上以防止有害的紫外线辐射时，HYP和含HYP的纸张的光黄变（颜色反转）降低。

    Near Neutral Chlorine Dioxide Bleaching of Pulp
    185.
    发明申请
    Near Neutral Chlorine Dioxide Bleaching of Pulp 有权
    近中性二氧化氯漂白纸浆

    公开(公告)号：US20090101296A1

    公开(公告)日：2009-04-23

    申请号：US12224794

    申请日：2007-02-12

    Applicant: Zhi-Hua Jiang ,  Richard McKinnon Berry

    Inventor： Zhi-Hua Jiang ,  Richard McKinnon Berry

    IPC: D21C9/14 ,  D21H21/32

    CPC classification number: D21C9/144 ,  D21C9/1015 ,  D21C9/1036 ,  D21C9/1063

    Abstract: Final chlorine dioxide bleaching of lignocellulosic materials is most effective at a near-neutral pH but present industrial practice typically targets a final pH of between 3.5 and 4.0 because of the difficulty in achieving and maintaining near-neutral pH cost effectively. The in situ formation of bicarbonate before the addition of chlorine dioxide provides a way of maintaining the required near-neutral pH. Near-neutral final chlorine dioxide bleaching also produces a bleached pulp that is in a state that responds more effectively to fluorescent whitening or optical brightening agents.

    Abstract translation: 木质纤维素材料的最终二氧化氯漂白在近中性pH下是最有效的，但由于难以有效地实现和维持近中性pH的成本，因此目前的工业实践通常将最终pH值定在3.5和4.0之间。 在添加二氧化氯之前，原位形成碳酸氢盐提供了维持所需的近中性pH值的方式。 近中性的最终二氧化氯漂白还产生漂白纸浆，其处于对荧光增白剂或荧光增白剂更有效响应的状态。

    Oxidative, Reductive, Hydrolytic and Other Enzymatic Systems for Oxidizing, Reducing, Coating, Coupling or Cross-Linking Natural and Artificial Fiber Materials, Plastic Materials or Other Natural or Artificial Monomer to Polymer Materials
    187.
    发明申请
    Oxidative, Reductive, Hydrolytic and Other Enzymatic Systems for Oxidizing, Reducing, Coating, Coupling or Cross-Linking Natural and Artificial Fiber Materials, Plastic Materials or Other Natural or Artificial Monomer to Polymer Materials 审中-公开
    氧化，还原，水解和其他用于氧化，还原，涂覆，偶联或交联的天然和人造纤维材料，塑料材料或其他天然或人造单体到聚合物材料的酶系统

    公开(公告)号：US20080070284A1

    公开(公告)日：2008-03-20

    申请号：US11587639

    申请日：2005-04-26

    Applicant: Hans-Peter Call

    Inventor： Hans-Peter Call

    IPC: C12P19/18

    CPC classification number: D21C5/005 ,  D21C9/1036 ,  D21C9/147 ,  D21C9/16

    Abstract: The invention relates to methods for oxidizing (redox reactions, preferably pulp delignification/bleaching), for carrying out coupling reactions (grafting polymer materials) or for carrying out cross-linking reactions on natural (i.e. having natural origin) or artificial (i.e. synthetically produced polymers) monomers to polymers or of mixtures of natural and artificial polymers or of fibre materials, of lignocellulose-containing, cellulose-containing or protein-like natural polymers or fibre materials such as pulp, textiles like cotton and wool. The invention is characterized in that 1) these oxidation, coupling or cross-linking reactions are carrying out using hydrolases such as lipases, esterases, proteases, amidases, transferases, acylases, glycosidases or glycotransferases or oxidoreductases, such as preferably peroxidases, chloroperoxidases and laccases, either individually or in combination with one another; and 2) that these reactions ( oxidation, coupling or cross-linking reactions) are carrying out with the above mentioned substances and/or with property-changing substances such as monomer to polymer substances (natural or synthetic) either simultaneously or one after the other using specific enzyme-activated enhancer substances and/or coupling substances.

    Abstract translation: 本发明涉及氧化（氧化还原反应，优选纸浆脱木素/漂白）用于进行偶联反应（接枝聚合物材料）或用于在天然（即具有天然来源）或人造（即合成产生）上进行交联反应的方法 聚合物）单体聚合物或天然和人造聚合物或纤维材料的混合物，含木素纤维素，含纤维素或蛋白质样天然聚合物或纤维材料如纸浆，纺织品如棉和羊毛。 本发明的特征在于：1）这些氧化，偶联或交联反应是使用水解酶例如脂肪酶，酯酶，蛋白酶，酰胺酶，转移酶，酰基转移酶，糖苷酶或糖转移酶或氧化还原酶，例如优选过氧化物酶，氯过氧化物酶和漆酶 ，单独或彼此组合; 和2）这些反应（氧化，偶联或交联反应）与上述物质和/或与性质变化物质如单体与聚合物物质（天然或合成）同时或一个接一个地进行 使用特定的酶激活增强剂物质和/或偶联物质。

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