公开(公告)号：US20160298294A1

公开(公告)日：2016-10-13

申请号：US15034453

申请日：2014-10-15

Applicant: EVONIK DEGUSSA GMBH

Inventor： Thomas DIETZ ,  Bernd HOPF ,  Ralf GRIMMER ,  Sigrid WEGMANN ,  Verena ILLHARDT

IPC: D21C9/16 ,  D21C3/02

CPC classification number: D21C9/163 ,  D21C3/00 ,  D21C3/026 ,  D21C9/10 ,  D21C9/1036 ,  D21C9/1042 ,  D21C9/1057 ,  D21C9/147 ,  D21C9/16 ,  D21C9/166

Abstract: Process for delignifying and bleaching pulp Process for the delignification and bleaching of pulp, comprising a first bleaching stage with hydrogen peroxide in the presence of a molybdate or tungstate in an acidic aqueous mixture; subsequent to the first bleaching stage, a second bleaching stage with hydrogen peroxide in an alkaline aqueous mixture; and, subsequent to the second bleaching stage, a third bleaching stage with hydrogen peroxide in the presence of a molybdate or tungstate in an acidic aqueous mixture.

Abstract translation: 脱木素和漂白工艺木浆的脱木质素和漂白工艺包括在酸性含水混合物中在钼酸盐或钨酸盐存在下用过氧化氢进行的第一漂白阶段; 在第一漂白阶段之后，在碱性水性混合物中具有过氧化氢的第二漂白阶段; 并且在第二漂白阶段之后，在酸性含水混合物中，在钼酸盐或钨酸盐存在下，用过氧化氢进行第三漂白阶段。

公开(公告)号：US20160237618A1

公开(公告)日：2016-08-18

申请号：US15023252

申请日：2014-09-12

Applicant: NOVOZYMES A/S

Inventor： Bjoern Lennart Pierre Alexander Cassland ,  Henrik Lund ,  Christiane Liers ,  Rene Ullrich ,  Marek Jan Pecyna

IPC: D21C9/10 ,  D21C9/16 ,  D21C9/12 ,  D21C5/00

CPC classification number: D21C9/1063 ,  D21C5/005 ,  D21C9/1036 ,  D21C9/123 ,  D21C9/14 ,  D21C9/163

Abstract: The use of a GH78 enzyme in the bleaching of pulp for preparing paper materials, such as paper, linerboard, corrugated paperboard, tissue, towels, corrugated containers and boxes.

Abstract translation: 使用GH78酶在纸浆漂白中制备纸材料，如纸张，纸板，瓦楞纸板，纸巾，毛巾，瓦楞纸箱和纸箱。

公开(公告)号：US09096974B2

公开(公告)日：2015-08-04

申请号：US13636075

申请日：2011-03-21

Applicant: Romolo Ranocchia ,  Ademilson Massoquete ,  Danilo Oyakawa

Inventor： Romolo Ranocchia ,  Ademilson Massoquete ,  Danilo Oyakawa

IPC: D21H17/28 ,  D21C3/22 ,  D21C5/02 ,  D21C9/00 ,  D21C9/10 ,  D21H17/21 ,  D21H17/24

CPC classification number: D21H23/04 ,  D21C3/222 ,  D21C5/025 ,  D21C9/005 ,  D21C9/1036 ,  D21H11/20 ,  D21H17/21 ,  D21H17/24 ,  D21H17/28 ,  Y02W30/648

Abstract: The present invention relates to an improved process for producing chemical cellulose pulp wherein biopolymers are added immediately before, during or after a bleaching step, depending on pulp characteristics and on process conditions used. The biopolymers according to the present invention are starch by an etherification reaction. This treatment results in a differentiated pulp having improved physical, chemical and mechanical properties when compared with cellulose pulps obtained by traditional processes. The use of said biopolymer alters the relations between important pulp properties rendering their application in papermaking process advantageous. This differentiation increases the possibilities of use and also of new applications, including for the substitution of pulps produced from other cellulose sources. Thus, the present invention also relates to a process for the preparation of paper, such as printing, writing, decorative, special or tissue-type papers, through the use of the cellulose pulps modified by the above process.

Abstract translation: 本发明涉及一种生产化学纤维素纸浆的改进方法，其中根据纸浆特性和使用的工艺条件，在漂白步骤之前，期间或之后添加生物聚合物。 根据本发明的生物聚合物是通过醚化反应的淀粉。 与通过传统方法获得的纤维素纸浆相比，该处理导​​致具有改善的物理，化学和机械性能的分化纸浆。 所述生物聚合物的使用改变了重要纸浆性质之间的关系，使其在造纸过程中的应用有利。 这种分化增加了使用的可能性，也增加了新应用的可能性，包括替代其他纤维素来源的纸浆。 因此，本发明还涉及通过使用通过上述方法修饰的纤维素纸浆来制备纸的方法，例如印刷，书写，装饰性，特殊或组织型纸。

公开(公告)号：US20140259458A1

公开(公告)日：2014-09-18

申请号：US13839091

申请日：2013-03-15

Applicant: ECOLAB USA INC.

Inventor： Prasad Y. Duggirala ,  Sergey M. Shevchenko

IPC: D21H17/09 ,  D21H17/66 ,  D21H17/10 ,  D21H21/28

CPC classification number: D21H17/09 ,  D21C9/1036 ,  D21C9/1042 ,  D21C9/1084 ,  D21H17/10 ,  D21H17/15 ,  D21H17/66 ,  D21H21/143 ,  D21H21/28 ,  D21H21/30

Abstract: Compositions and methods that preserve and enhance the brightness of pulp, and also improve the color of pulp or paper, when applied during different stages of a papermaking process, are disclosed. The compositions and methods maintain or enhance brightness, prevent yellowing, and enhance the performance of paper products. The compositions can include a mixture of reducing agents and can also include optical brighteners, chelants, polycarboxylates, or other additives. The mixture of reducing agents can include a borohydride, such as sodium borohydride, and any other reducing agent, such as a sulfite or bisulfite.

Abstract translation: 公开了当在造纸过程的不同阶段应用时，保持和增强纸浆亮度的组合物和方法，以及纸浆或纸的颜色的改善。 组合物和方法保持或增强亮度，防止黄变，并提高纸制品的性能。 组合物可以包括还原剂的混合物，还可以包括荧光增白剂，螯合剂，聚羧酸盐或其它添加剂。 还原剂的混合物可以包括硼氢化钠，例如硼氢化钠，以及任何其它还原剂，例如亚硫酸盐或亚硫酸氢盐。

公开(公告)号：US20140238626A1

公开(公告)日：2014-08-28

申请号：US14348791

申请日：2012-09-13

Applicant: Shiho Tsuji ,  Masahiko Fukazawa ,  Shoichi Miyawaki ,  Takeshi Iimori

Inventor： Shiho Tsuji ,  Masahiko Fukazawa ,  Shoichi Miyawaki ,  Takeshi Iimori

IPC: D21C1/02

CPC classification number: D21C1/02 ,  C08B15/02 ,  C08B15/04 ,  D21C3/02 ,  D21C3/18 ,  D21C9/005 ,  D21C9/007 ,  D21C9/1036 ,  D21H11/18 ,  D21H11/20 ,  D21H27/10

Abstract: Provided is a method which is capable of producing a cellulose nanofiber dispersion liquid that has a low viscosity and excellent fluidity even at a high concentration, while exhibiting excellent transparency. In a method for producing cellulose nanofibers, wherein a cellulosic starting material is oxidized in water using an oxidant in the presence of an N-oxyl compound and a compound that is selected from the group consisting of a bromide, an iodide and a mixture thereof and the thus obtained oxidized cellulose is defibrated and dispersed, pulp which is obtained by carrying out kraft cooking after a hydrolysis process is used as the cellulosic starting material.

Abstract translation: 提供一种能够生产即使在高浓度下也具有低粘度和优异流动性同时具有优异透明性的纤维素纳米纤维分散液的方法。 在制备纤维素纳米纤维的方法中，其中在N-氧基化合物和选自溴化物，碘化物及其混合物的化合物存在下，使用氧化剂在水中使纤维素原料氧化， 由此获得的氧化纤维素被去纤维化和分散，在水解过程之后通过进行硫酸盐蒸煮来获得的纸浆被用作纤维素起始材料。

公开(公告)号：US08722881B2

公开(公告)日：2014-05-13

申请号：US12925053

申请日：2010-10-13

Applicant: Anindya Ghosh ,  Shane Z. Sullivan ,  Samuel L. Collom ,  Sharon Pulla

Inventor： Anindya Ghosh ,  Shane Z. Sullivan ,  Samuel L. Collom ,  Sharon Pulla

IPC: C07D245/00 ,  C07D245/04 ,  C07C45/27 ,  C07F15/02 ,  C07D257/10 ,  C07C291/04 ,  D06L3/00 ,  D21C11/00

CPC classification number: C07D257/10 ,  C07C45/27 ,  C07C269/06 ,  C07D301/02 ,  D06L4/12 ,  D21C9/1036 ,  D21C9/1042 ,  D21C9/163 ,  C07C271/28

Abstract: A tetradendate amide based macrocyclic ligand and its Fe(III) complex which act as activators of hydrogen peroxide. The synthetic methodology to develop the ligands is new, simple and provides better yield for each step of the ligand synthesis. The Fe(III)-complexes and hydrogen peroxide together are can perform several environmentally benign oxidation reactions. Organic dye bleaching, bleaching of pulp and paper effluent and N-oxide synthesis may be performed using the newly developed catalyst and hydrogen peroxide. Alcohol oxidation and alkene epoxidation may also be performed using the catalysts and hydrogen peroxide.

Abstract translation: 作为过氧化氢活化剂的四辅助酰胺基大环配体及其Fe（III）络合物。 开发配体的合成方法是新的，简单的并且为配体合成的每个步骤提供更好的产率。 Fe（III） - 复合物和过氧化氢一起可以进行几种环境友好的氧化反应。 有机染料漂白，纸浆和纸张流出物的漂白和N-氧化物合成可以使用新开发的催化剂和过氧化氢进行。 醇氧化和烯烃环氧化也可以使用催化剂和过氧化氢进行。

公开(公告)号：US08644870B2

公开(公告)日：2014-02-04

申请号：US13132110

申请日：2009-11-30

Applicant: Peter Larsson

Inventor： Peter Larsson

IPC: H04B7/00

CPC classification number: D21C9/1036 ,  C01B15/037 ,  D21C5/005 ,  D21C9/163

Abstract: A method in a communication node of a wireless communications system that provides at least two communication links each having at least two frequency channels. The communication node is configured to communicate with a receiving communication node over a link under influence of interference from surrounding transmitter(s) using said frequency channels. The method includes determining a target for said link for the sum of the data rates and allocating power on the frequency channels to reach said target while minimizing the sum of the power on said link.

Abstract translation: 一种提供至少两个通信链路的无线通信系统的通信节点中的方法，每个通信链路各自具有至少两个频率信道。 通信节点被配置为通过使用所述频率信道的来自周围发射机的干扰的影响下的链路与接收通信节点进行通信。 该方法包括：为数据速率之和确定所述链路的目标，并在频率信道上分配功率以达到所述目标，同时最小化所述链路上的功率之和。

公开(公告)号：US20140000825A1

公开(公告)日：2014-01-02

申请号：US14017954

申请日：2013-09-04

Applicant: INTERNATIONAL PAPER COMPANY

Inventor： ZHENG TAN ,  XUAN T. NGUYEN ,  KAREN MAURER

IPC: D21C9/00

CPC classification number: D21C9/007 ,  D21B1/16 ,  D21C3/006 ,  D21C3/02 ,  D21C9/002 ,  D21C9/004 ,  D21C9/1036 ,  D21C9/163 ,  Y10T428/298

Abstract: A method for alteration of the morphology of cellulose fibers, particularly softwood fibers, by (a) subjecting the fibers to a metal ion-activated peroxide treatment carried out at a pH of between about 1 and about 9, preferably between 3 and 7, and (b) subjecting the treated fibers to a refining treatment thereby converts SW fibers toHW-like fibers in many respects. The metal ion-activated peroxide treatment has been noted to act on pulp cellulose and hemi-cellulose, causing oxidation and oxidative degradation of cellulose fibers. The chemical treatment of the pulp, taken alone, is not sufficient to attain the desired modification of the morphology of the fibers, however, subsequent refining or like mechanical treatment of the chemically-treated fibers to achieve a given degree of refinement of the fibers requires dramatically less refining energy to achieve a desired end point of refinement and to impart other desirable properties to the pulp. A pulp of modified SW fibers and a mixture of HW fibers and modified HW fibers are disclosed.

Abstract translation: 通过（a）使纤维进行在约1至约9，优选3至7之间的pH下进行的金属离子活化的过氧化物处理，改变纤维素纤维，特别是软木纤维的形态的方法，以及 （b）经处理的纤维进行精制处理，从而在许多方面将SW纤维转化成HW样纤维。 已经注意到金属离子活化的过氧化物处理作用于纸浆纤维素和半纤维素，引起纤维素纤维的氧化和氧化降解。 单独使用纸浆的化学处理不足以达到对纤维形态的所需改性，然而，随后的精炼或类似机械处理化学处理的纤维以达到纤维的一定程度的细化需要 显着减少精炼能量以实现期望的精制终点并赋予纸浆其它所需特性。 公开了改性SW纤维的纸浆和HW纤维和改性的HW纤维的混合物。

公开(公告)号：US08470132B2

公开(公告)日：2013-06-25

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

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。

公开(公告)号：US08262850B2

公开(公告)日：2012-09-11

申请号：US10668387

申请日：2003-09-23

Applicant: Zheng Tan ,  Xuan Nguyen ,  Karen L. Maurer

Inventor： Zheng Tan ,  Xuan Nguyen ,  Karen L. Maurer

IPC: D21C9/16

CPC classification number: D21C9/007 ,  D21B1/16 ,  D21C3/006 ,  D21C3/02 ,  D21C9/002 ,  D21C9/004 ,  D21C9/1036 ,  D21C9/163 ,  Y10T428/298

Abstract: A method for alteration of the morphology of cellulose fibers, particularly softwood fibers, by (a) subjecting the fibers to a metal ion-activated peroxide treatment carried out at a pH of between about 1 and about 9, preferably between 3 and 7, and (b) subjecting the treated fibers to a refining treatment thereby converts SW fibers to HW-like fibers in many respects. The metal ion-activated peroxide treatment has been noted to act on pulp cellulose and hemi-cellulose, causing oxidation and oxidative degradation of cellulose fibers. The chemical treatment of the pulp, taken alone, is not sufficient to attain the desired modification of the morphology of the fibers, however, subsequent refining or like mechanical treatment of the chemically-treated fibers to achieve a given degree of refinement of the fibers requires dramatically less refining energy to achieve a desired end point of refinement and to impart other desirable properties to the pulp. A pulp of modified SW fibers and a mixture of HW fibers and modified HW fibers are disclosed.

Abstract translation: 通过（a）使纤维进行在约1至约9，优选3至7之间的pH下进行的金属离子活化的过氧化物处理，改变纤维素纤维，特别是软木纤维的形态的方法，以及 （b）经处理的纤维进行精制处理，从而在许多方面将SW纤维转化成HW样纤维。 已经注意到金属离子活化的过氧化物处理作用于纸浆纤维素和半纤维素，引起纤维素纤维的氧化和氧化降解。 单独使用纸浆的化学处理不足以达到对纤维形态的所需改性，然而，随后的精炼或类似机械处理化学处理的纤维以达到纤维的一定程度的细化需要 显着减少精炼能量以实现期望的精制终点并赋予纸浆其它所需特性。 公开了改性SW纤维的纸浆和HW纤维和改性的HW纤维的混合物。