公开(公告)号：US20120015860A1

公开(公告)日：2012-01-19

申请号：US13239588

申请日：2011-09-22

Applicant: Anette Nordskog ,  Dorota Sendor-Müller ,  Wolfgang von Rybinski ,  Peter Schmiedel ,  Ursula Huchel ,  Thomas Weber ,  Siglinde Erpenbach ,  Paula Barreleiro ,  André Hätzelt

Inventor： Anette Nordskog ,  Dorota Sendor-Müller ,  Wolfgang von Rybinski ,  Peter Schmiedel ,  Ursula Huchel ,  Thomas Weber ,  Siglinde Erpenbach ,  Paula Barreleiro ,  André Hätzelt

IPC: C11D3/60

CPC classification number: C11D3/3932 ,  C11D3/222 ,  D06L4/12 ,  D21C9/1036 ,  D21C9/16

Abstract: The aim of the invention is reduce the damage to material containing cellulose during the bleaching thereof, by using bleaching catalysts, without significantly affecting the bleaching performance. This is achieved essentially by a method for the bleach treatment of material containing cellulose in the presence of a bleaching agent containing peroxygen and a bleach-enhancing transition metal complex, said method being carried out in the presence of a saccharide polymer carrying carboxy groups.

Abstract translation: 本发明的目的是通过使用漂白催化剂来减少在漂白期间含有纤维素的材料的损害，而不显着影响漂白性能。 这主要通过在含有过氧化物和漂白剂增强的过渡金属络合物的漂白剂的存在下漂白处理含纤维素的方法来实现，所述方法在携带羧基的糖类聚合物的存在下进行。

公开(公告)号：US20110174451A1

公开(公告)日：2011-07-21

申请号：US13007664

申请日：2011-01-16

Applicant: Thomas Dietz

Inventor： Thomas Dietz

IPC: D21C9/14

CPC classification number: D21C9/1036 ,  D21C9/144 ,  D21C9/163

Abstract: The delignification and bleaching of chemical pulp by a bleaching stage, in which the chemical pulp is reacted first with chlorine dioxide and, after reaction of the chlorine dioxide, is further reacted without intermediate washing with hydrogen peroxide in the presence of a molybdate or tungstate, permits the production of chemical pulp having a whiteness of at least 89.5%, having improved stability to yellowing and reduced oxidative damage.

Abstract translation: 化学纸浆首先与二氧化氯反应，并在二氧化氯反应后，在钼酸盐或钨酸盐存在下进一步反应而不用过氧化氢进行中间洗涤，通过漂白阶段进行化学纸浆脱木质素和漂白， 允许生产白度至少为89.5％的化学纸浆，具有改善的黄变稳定性和减少的氧化损伤。

公开(公告)号：US20100126680A1

公开(公告)日：2010-05-27

申请号：US12621615

申请日：2009-11-19

Applicant: Chen Lu ,  Janet Woodward

Inventor： Chen Lu ,  Janet Woodward

IPC: D21C5/02 ,  C12N9/99 ,  D21H17/47

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

Abstract: A method is described controlling enzymatic decomposition of peroxide comprising contacting a composition containing a peroxide decomposing enzyme with an aldehyde functional polymer added in an amount effective to control the enzyme. There also is a method described for bleaching cellulose pulp, such as recycled paper pulp or other pulps, with an aldehyde functional polymer introduced in an amount effective to control peroxide decomposing enzymes present in the pulp being bleached. Paper products containing the aldehyde functional polymer used to control peroxide decomposing enzymes in a bleaching treatment of cellulose pulp are also provided.

Abstract translation: 描述了控制过氧化物酶分解的方法，包括使含有过氧化物分解酶的组合物与有效控制酶的量加入的醛官能聚合物接触。 还有一种描述用于漂白纤维素纸浆的方法，例如再生纸浆或其它纸浆，其中醛官能聚合物的引入量有效地控制存在于被漂白纸浆中的过氧化物分解酶。 还提供了含有用于控制纤维素纸浆漂白处理中的过氧化物分解酶的醛官能聚合物的纸制品。

公开(公告)号：US20100101029A1

公开(公告)日：2010-04-29

申请号：US12523057

申请日：2007-12-20

Applicant: Joaquim Manuel Henriques de Almeida ,  Herbert Bachus ,  Zinaida Ponie Djodikromo ,  Christian Doerfler ,  Ronald Hage ,  Joachim Lienke

Inventor： Joaquim Manuel Henriques de Almeida ,  Herbert Bachus ,  Zinaida Ponie Djodikromo ,  Christian Doerfler ,  Ronald Hage ,  Joachim Lienke

IPC: D06L3/02

CPC classification number: C11D3/3932 ,  D06L4/12 ,  D06L4/13 ,  D21C9/1036 ,  D21C9/1042 ,  D21C9/163

Abstract: The present invention concerns the treatment of a cellulose material in the presence of a transition metal catalyst, hydrogen peroxide whilst maintaining the pH of the treatment mixture.

Abstract translation: 本发明涉及在过渡金属催化剂，过氧化氢的存在下处理纤维素材料，同时保持处理混合物的pH。

公开(公告)号：US20090126121A1

公开(公告)日：2009-05-21

申请号：US12083456

申请日：2006-10-04

Applicant: Joaquim Manuel Henriques de Almeida ,  Zinaida Ponie Djodikromo ,  Ronald Hage

Inventor： Joaquim Manuel Henriques de Almeida ,  Zinaida Ponie Djodikromo ,  Ronald Hage

IPC: D06L3/02

CPC classification number: D21C9/1036 ,  C11D3/3932 ,  D06L4/10 ,  D06L4/12 ,  D21C9/1042 ,  D21C9/163

Abstract: The present invention concerns bleaching of substrates with an aqueous solution of a water soluble salt of a preformed transition metal catalyst together with hydrogen peroxide.

Abstract translation: 本发明涉及用预先形成的过渡金属催化剂的水溶性盐与过氧化氢的水溶液漂洗底物。

公开(公告)号：US20080262225A1

公开(公告)日：2008-10-23

申请号：US12214491

申请日：2008-06-19

Applicant: Gunther Schlingloff ,  Torsten Wieprecht ,  Frank Bachmann ,  Josef Dannacher ,  Marie-Josee Dubs ,  Menno Hazenkamp ,  Grit Hansler (-Richter) ,  Brigitte Schmidt ,  Albert Schneider ,  Peter Weingartner

Inventor： Gunther Schlingloff ,  Torsten Wieprecht ,  Frank Bachmann ,  Josef Dannacher ,  Marie-Josee Dubs ,  Menno Hazenkamp ,  Grit Hansler (-Richter) ,  Brigitte Schmidt ,  Albert Schneider ,  Peter Weingartner

IPC: C07D401/14 ,  C07D413/14

CPC classification number: B01J31/1815 ,  B01J23/34 ,  B01J2231/70 ,  B01J2231/72 ,  B01J2531/16 ,  B01J2531/46 ,  B01J2531/72 ,  B01J2531/842 ,  B01J2531/845 ,  B01J2531/847 ,  C07D213/61 ,  C07D213/68 ,  C07D213/74 ,  C07F13/005 ,  C11D3/3932 ,  D06L4/10 ,  D06L4/12 ,  D06P5/02 ,  D06P5/153 ,  D21C9/1036 ,  D21C9/163

Abstract: Use of metal complex compounds of formula [LnMemXp]zYq,   (1) wherein Me is manganese, titanium, iron, cobalt, nickel or copper, X is a coordinating or bridging radical, n and m are each independently of the other an integer having a value of from 1 to 8, p is an integer having a value of from 0 to 32, z is the charge of the metal complex, Y is a counter-ion, q=z/(charge Y), and L is a ligand of formula wherein R1, R2, R3, R4, R5, R6, R7, R8, R9, R10 and R11 are each independently of the others hydrogen; unsubstituted or substituted C1-C18alkyl or aryl; cyano; halogen; nitro; —COOR12 or —SO3R12 wherein R12 is in each case hydrogen, a cation or unsubstituted or substituted C1-C18alkyl or aryl; —SR13, —SO2R13 or —OR13 wherein R13 is in each case hydrogen or unsubstituted or substituted C1-C18alkyl or aryl; —N(R13)—NR′13R″13 wherein R13, R′13 and R″13 are as defined above for R13; —NR14R15 or —N⊕R14R15R16 wherein R14, R15 and R16 are each independently of the other(s) hydrogen or unsubstituted or substituted C1-C18alkyl or aryl, or R14 and R15 together with the nitrogen atom bonding them form an unsubstituted or substituted 5-, 6- or 7-membered ring which may optionally contain further hetero atoms; with the proviso that R1, R2, R3, R4, R5, R6, R7, R8, R9, R10 and R11 are not simultaneously hydrogen, as catalysts for oxidation reactions, and the novel metal complex compounds of formula (1) and the novel ligands of formula (2).

公开(公告)号：US20070277947A1

公开(公告)日：2007-12-06

申请号：US11446421

申请日：2006-06-02

Applicant: Xuan Truong Nguyen

Inventor： Xuan Truong Nguyen

IPC: D21C3/22

CPC classification number: D21C9/1036 ,  D21C9/163

Abstract: A process for bleaching mechanical wood pulp is provided comprising subjecting the wood pulp to at least one bleaching stage with one or more bleaching agents in the presence of one or more optical brightening agent, wherein the bleaching agents are selected from the group consisting of oxidative bleaching agents other than chlorine based bleaching agents such as chlorine dioxide, elemental chlorine or a combination thereof, reductive bleaching agents or any combination of two or more thereof.

Abstract translation: 提供了一种用于漂白机械木浆的方法，包括在一种或多种荧光增白剂的存在下，将木浆与一种或多种漂白剂进行至少一个漂白阶段，其中漂白剂选自氧化漂白 除了基于氯的漂白剂如二氧化氯，元素氯或其组合之外的试剂，还原性漂白剂或其两种或多种的任何组合。

公开(公告)号：US20060196622A1

公开(公告)日：2006-09-07

申请号：US11364275

申请日：2006-03-01

Applicant: Thanh Trung ,  Stephen Betts ,  Denys Leclerc

Inventor： Thanh Trung ,  Stephen Betts ,  Denys Leclerc

IPC: D21C7/12 ,  D21F7/06 ,  G01N21/25 ,  G01N21/35

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

Abstract: A method for the determination of cellulosic-fibre properties, such as, but not limited to, residual lignin content 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 the steps of obtaining a sample from the process line, minimally removing some excess water, exposing the fibres in the sample to a large beam light source, optionally moving the sample at a constant speed, and acquiring the spectral data over a pre-determined length of time, and correlating the spectrum to a previously determined calibration so as to determine the Kappa number. Alternatively, as an arrangement for process control, along with other varying configurations, the instant invention includes the mounting of the excitation light source and fibre-optic probe along the various locations of the kraft cooking and bleaching process, such as 1) at the drum brownstock washers and 2) throughout the bleach plant deckers, located just before the doctored blade, the probe being connected to a fast scanning spectrometer, via fibre optic cables, with a computer sequencing spectral acquisition and correlating the spectrum against a predetermined calibration, and logging the results. The process configuration, with the use of the instant invention, overcomes all limitations of prior art, including sampling hardware and sample preparation, and provides true online Kappa number determinations of the order of seconds, as compared to current state of the art Kappa analyzers which require 10 to 15 minutes per analysis. The present method is capable of measuring residual lignin content of chemical pulps with varying consistency, accounts for species effects to provide species insensitivity and can provide analysis in less than 10 seconds. The method can provide true online continuous measurement of Kappa number for feedforward and feedback control of the bleaching, paper machine and kraft cooking processes.

公开(公告)号：US07052578B2

公开(公告)日：2006-05-30

申请号：US09769761

申请日：2001-01-26

Applicant: Mark T. Wajer ,  Aileen R. Gibson ,  Joseph Genco ,  Donna Johnson ,  Burton Branch

Inventor： Mark T. Wajer ,  Aileen R. Gibson ,  Joseph Genco ,  Donna Johnson ,  Burton Branch

IPC: D21C9/16

CPC classification number: D21C9/1036 ,  D21C9/163

Abstract: Wood pulp is bleached using hydrogen peroxide as the oxidative bleaching agent in the presence of magnesium hydroxide or magnesium oxide. The bleaching process is carried out in the presence of magnesium hydroxide as the predominant, and preferably essential, source of alkali. The process optionally includes transition metal chelants, such as DTPA or EDTA in the bleaching slurry. The process eliminates the need for added caustic and silicate in such systems and can be carried out at or near neutral pH of 5.0 to 8.5.

Abstract translation: 在氢氧化镁或氧化镁存在下，使用过氧化氢作为氧化漂白剂将木浆漂白。 漂白过程是在氢氧化镁作为主要的，优选必需的碱源的情况下进行的。 该方法任选地包括过渡金属螯合剂，例如漂白浆液中的DTPA或EDTA。 该方法消除了在这种体系中添加苛性碱和硅酸盐的需要，并且可以在5.0至8.5的中性pH附近进行。

公开(公告)号：US20030096394A1

公开(公告)日：2003-05-22

申请号：US10027166

申请日：2001-12-20

Inventor： Huai N. Cheng ,  Simon Delagrave ,  Qu-Ming Gu ,  Daniel Michalopoulos ,  Dannis J. Murphy

IPC: D21C001/00

CPC classification number: D21C3/222 ,  C12P1/00 ,  D21C5/005 ,  D21C9/1036

Abstract: New mediators for use in laccase-mediator systems (LMS) are disclosed. The mediators enhance the activity of enzymes exhibiting laccase activity and can be used, for example, to bleach a dye in solution, to oxidize an appropriate compound, or to initiate vinyl or phenol polymerizations. A composition comprising an enzyme exhibiting laccase activity and an enzyme enhancing agent (also referred to as a mediator or an activating agent) is also disclosed. A process for oxidizing a substrate that comprises treating the substrate with a composition comprising an enzyme exhibiting laccase activity and an enzyme enhancing agent is also disclosed.

Abstract translation: 公开了用于漆酶介体系统（LMS）的新型介质。 介质增强显示漆酶活性的酶的活性，并且可以用于例如漂洗溶液中的染料，氧化合适的化合物，或引发乙烯基或苯酚聚合。 还公开了包含显示漆酶活性的酶和酶增强剂（也称为介体或活化剂）的组合物。 还公开了一种用于氧化底物的方法，其包括用包含显示漆酶活性的酶和酶增强剂的组合物处理底物。