公开(公告)号：US20170335515A1

公开(公告)日：2017-11-23

申请号：US15601350

申请日：2017-05-22

申请人： Clean Chemistry

发明人： Wayne E. Buschmann

IPC分类号： D21C9/16 ,  D21C9/12 ,  D21C11/00

CPC分类号： D21C9/163 ,  D21C9/1042 ,  D21C9/1057 ,  D21C9/123 ,  D21C9/147 ,  D21C9/16 ,  D21C9/166 ,  D21C11/0007

摘要： In some embodiments, a method may include treating pulp. The method may include contacting a wood pulp with a singlet oxygen source. The method may include contacting the wood pulp with an alkaline peroxide source. The singlet oxygen source may include a peracetate oxidant solution and generating a reactive oxygen species. The peracetate oxidant solution may include peracetate anions and a peracid. In some embodiments, the peracetate solution may include a pH from about pH 10 to about pH 12. In some embodiments, the peracetate solution has a molar ratio of peracetate anions to peracid ranging from about 60:1 to about 6000:1. In some embodiments, the peracetate solution has a molar ratio of peracetate to hydrogen peroxide of greater than about 16:1. The peracetate oxidant solution may provide enhanced treatment methods of bleaching, brightening, and delignifying pulp fibers involving the use of peracetate oxidant solutions.

公开(公告)号：US09068293B2

公开(公告)日：2015-06-30

申请号：US13851884

申请日：2013-03-27

申请人： Nalco Company

发明人： Prasad Y. Duggirala ,  Sergey M. Shevchenko

IPC分类号： D21C9/16 ,  D21H21/32 ,  D21C9/10 ,  D21H21/30 ,  D21H17/09

CPC分类号： D21H21/32 ,  D21C9/1042 ,  D21C9/1084 ,  D21H17/09 ,  D21H21/30

摘要： The invention is directed towards methods and compositions for processes based on the combination of organic peroxyacids and ammonium salts that preserve and enhance the response to optical brighteners (fluorescent whitening dyes), brightness and improve color of pulp or paper when applied during different stages of the papermaking process are identified. The composition and method improve response to optical brighteners (fluorescent whitening dyes), maintain and/or enhance brightness and enhance the performance of paper products. Used in combination with optical brighteners the described agents produce a synergistic effect not previously identified in the paper process.

摘要翻译： 本发明涉及基于有机过氧酸和铵盐的组合的方法和组合物，其保留并增强对荧光增白剂（荧光增白染料）的响应，当在不同阶段期间施加时，亮度和改善纸浆或纸的颜色 确定造纸过程。 组合物和方法改善对荧光增白剂（荧光增白染料）的响应，维持和/或增强亮度并提高纸制品的性能。 与荧光增白剂组合使用时，所述试剂产生在纸张方法中以前未鉴定的协同效应。

公开(公告)号：US08524038B2

公开(公告)日：2013-09-03

申请号：US12295378

申请日：2007-03-27

申请人： Aki Vilpponen ,  Panu Tikka

发明人： Aki Vilpponen ,  Panu Tikka

IPC分类号： D21C9/14

CPC分类号： D21C9/144 ,  D21C9/1042 ,  D21C9/147 ,  D21C9/163

摘要： A process for the bleaching of chemical pulp, wherein the initial bleaching of the pulp includes a first chlorine dioxide treatment (D0) and a following alkaline treatment with oxygen and hydrogen peroxide (EOP), which stages are separated from each other with a washing stage, and a treatment of the pulp to reduce the content of transition metals of the pulp prior to the peroxide treatment. The process is characterized in that alkali is added to the pulp after addition of chlorine dioxide in the D0 stage to adjust the pH of the pulp to neutral or basic (N stage) prior to the washing stage following the chlorine dioxide stage, whereby the initial bleaching includes the sequence D0N EOP.

摘要翻译： 用于漂白化学纸浆的方法，其中纸浆的初始漂白包括第一次二氧化氯处理（D0）和用氧和过氧化氢（EOP）进行的以下碱处理，该阶段在洗涤阶段彼此分离 ，以及处理纸浆以在过氧化物处理之前降低纸浆的过渡金属含量。 该方法的特征在于，在D0阶段加入二氧化氯后，将碱加入到纸浆中，以在二氧化氯阶段之后的洗涤阶段将纸浆的pH调节至中性或碱性（N阶段），由此初始 漂白包括序列D0N EOP。

公开(公告)号：US08298373B2

公开(公告)日：2012-10-30

申请号：US12320944

申请日：2009-02-09

申请人： Yonghao Ni ,  Zhibin He

发明人： Yonghao Ni ,  Zhibin He

IPC分类号： D21C3/00

CPC分类号： D21C9/163 ,  D21C9/1036 ,  D21C9/1042 ,  D21H21/30 ,  D21H21/32

摘要： 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.

摘要翻译： 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。

公开(公告)号：US08246780B2

公开(公告)日：2012-08-21

申请号：US11387499

申请日：2006-03-23

申请人： Prasad Duggirala ,  Sergey Shevchenko

发明人： Prasad Duggirala ,  Sergey Shevchenko

IPC分类号： D21H17/63 ,  D21H11/16

CPC分类号： D21H21/30 ,  D21C9/1042 ,  D21C9/1084 ,  D21H21/32

摘要： Compositions and processes that preserve and enhance the brightness and improve color of pulp or paper when applied during different stages of the papermaking process are identified. The composition and method maintains and/or enhances brightness, prevent yellowing, and enhances the performance of paper products. Used in combination with optical brighteners and/or chelants the described agents produce a synergistic effect not previously identified in the paper process.

摘要翻译： 确定当在造纸过程的不同阶段应用时保持和增强纸浆或纸张的亮度和改善颜色的组合物和方法。 组合物和方法维持和/或增强亮度，防止变黄，并提高纸制品的性能。 与荧光增白剂和/或螯合剂组合使用时，所述试剂产生之前未在纸工艺中鉴定的协同效应。

公开(公告)号：US20120061043A1

公开(公告)日：2012-03-15

申请号：US13321256

申请日：2010-05-28

申请人： Pierre Dournel

发明人： Pierre Dournel

IPC分类号： D21C9/16 ,  D21C3/04

CPC分类号： D21C9/00 ,  D21C9/10 ,  D21C9/1042

摘要： The invention relates to a process for the bleaching of paper pulp with one or more peroxide oxidizing agents, in which the pulp is first treated in a pretreatment step with at least one inorganic magnesium derivative combined with at least one carboxylic acid or its salt, except its magnesium salt, or with at least one carboxylic acid at least partially saponified with Mg2+, the carboxylic acid being substituted by at least one electrodonating group or comprising at least one carbon-carbon double bond.

摘要翻译： 本发明涉及一种用一种或多种过氧化物氧化剂漂白纸浆的方法，其中在预处理步骤中首先用至少一种无机镁衍生物与至少一种羧酸或其盐组合处理纸浆，除了 其镁盐或与至少一种至少部分用Mg 2+皂化的羧酸，所述羧酸被至少一个电子基团取代或包含至少一个碳 - 碳双键。

公开(公告)号：US08128784B2

公开(公告)日：2012-03-06

申请号：US12295357

申请日：2007-03-27

申请人： Aki Vilpponen ,  Panu Tikka

发明人： Aki Vilpponen ,  Panu Tikka

IPC分类号： D21C9/16

CPC分类号： D21C9/144 ,  D21C9/1042

摘要： A process for the bleaching of chemical pulp, comprising a first chlorine dioxide treatment (D) of the initial bleaching and chelation (Q) to be carried out in connection therewith, forming together a DQ treatment. The process is characterized in that the chelation is carried out at the pH of from 2 to 7, and it is followed by an alkalizing stage (N) of the pulp, without intermediate washing for raising the pH of the pulp to above 7 and at most to 12 prior to a following stage which is a washing step.

摘要翻译： 一种漂白化学纸浆的方法，包括与之结合进行的初始漂白和螯合（Q）的第一次二氧化氯处理（D），形成DQ处理。 该方法的特征在于螯合在2至7的pH下进行，然后是纸浆的碱化阶段（N），而不进行中间洗涤以将纸浆的pH提高到7以上 在洗涤步骤的后续阶段之前最多至12次。

公开(公告)号：US20100224333A1

公开(公告)日：2010-09-09

申请号：US12400326

申请日：2009-03-09

申请人： Prasad Duggirala ,  Sergey Shevchenko

发明人： Prasad Duggirala ,  Sergey Shevchenko

IPC分类号： D21B1/04 ,  D21C9/00 ,  D21C3/02 ,  D21C3/04 ,  D21C3/06 ,  D21C3/20

CPC分类号： D21C1/06 ,  D21B1/021 ,  D21B1/04 ,  D21C9/1042 ,  D21C9/163

摘要： The invention provides a composition of matter and a method, which enhance the process of mechanically pulping paper precursors. The composition of matter includes a small quantity of a reducing agent and a source of alkali. When added to the pulped material, e.g., wood chips, before or during mechanical pulping, the composition reduces the energy cost of the operation. In addition, not only does the composition also does not reduce the brightness of pulp, the composition can also enhance the effectiveness of subsequent bleaching processes.

摘要翻译： 本发明提供一种物质组合物和一种增强机械制浆纸前体过程的方法。 物质的组成包括少量还原剂和碱源。 当在机械制浆之前或期间将其加入制浆材料（例如木屑）时，组合物降低了操作的能量成本。 另外，该组合物不仅不会降低纸浆的亮度，还可提高后续漂白工艺的有效性。

公开(公告)号：US20100183533A1

公开(公告)日：2010-07-22

申请号：US12664714

申请日：2008-07-21

申请人： Matthew Robert Giles ,  Nicholas John Dixon

发明人： Matthew Robert Giles ,  Nicholas John Dixon

IPC分类号： C11D3/395 ,  C07C55/00 ,  C02F5/10 ,  A61K8/22 ,  D21C3/22

CPC分类号： C07C229/24 ,  C11D3/33 ,  D21C9/1042 ,  D21C9/163

摘要： The present invention provides a salt of ethylenediamine disuccinic acid comprising at least 1.6 mole of alkaline earth metal per mole of ethylenediamine disuccinic acid. Salts of the invention have been found to be useful in providing compositions comprising hydrogen peroxide having improved stability.

摘要翻译： 本发明提供了每摩尔乙二胺二琥珀酸至少含有1.6摩尔碱土金属的乙二胺二琥珀酸盐。 已经发现本发明的盐可用于提供包含具有改善的稳定性的过氧化氢的组合物。

公开(公告)号：US20090183845A1

公开(公告)日：2009-07-23

申请号：US12301130

申请日：2007-05-15

申请人： Iori Tomoda ,  Yosuke Uchida ,  Hiroyuki Nagatani ,  Ayano Kawae ,  Takahiro Cho ,  Wakana Uesugi ,  Tetsuo Koshitsuka

发明人： Iori Tomoda ,  Yosuke Uchida ,  Hiroyuki Nagatani ,  Ayano Kawae ,  Takahiro Cho ,  Wakana Uesugi ,  Tetsuo Koshitsuka

IPC分类号： D21C9/02 ,  D21C9/16

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

摘要： Provided are a method for producing bleached pulp, comprising processing unbleached pulp obtained by cooking a lignocellulose substance, for alkali-oxygen bleaching followed by treatment with peroxomonosulfuric acid and thereafter by multistage chlorine-free bleaching treatment starting from chlorine dioxide treatment; a method for producing bleached pulp, comprising processing the unbleached pulp for alkali-oxygen bleaching followed by chlorine-free bleaching treatment or totally chlorine-free bleaching treatment to bleach it to a degree of brightness of from 70 to 89%, and further followed by treatment with peroxomonosulfuric acid; and paper produced by the use of the bleached pulp produced according to these production methods, at a papermaking pH of at most 6. Provided are the efficient production methods for bleached pulp in which the colour reversion resistance is enhanced in chlorine-free bleaching and the bleaching cost increase is prevented, and the paper produced by the use of the bleached pulp according to an acid papermaking process.

摘要翻译： 本发明提供漂白纸浆的制造方法，其特征在于，对由木质素纤维素物质进行蒸煮而得到的未漂白纸浆进行碱氧漂白处理，然后用二氯甲烷处理开始进行多级无氯漂白处理， 一种漂白纸浆的制造方法，其特征在于，对未漂白的纸浆进行碱氧漂白处理，然后进行无氯漂白处理或全部无氯漂白处理，将其漂白至亮度为70〜89％ 用次氯酸处理; 以及通过使用根据这些生产方法生产的漂白纸制成的纸，造纸pH值至多为6.提供了在无氯漂白中提高耐逆色性的漂白纸浆的有效生产方法。 防止漂白成本增加，并且根据酸性造纸方法使用漂白纸浆生产纸。