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    Ozone bleaching process using oxalic acid addition
    71.
    发明授权
    Ozone bleaching process using oxalic acid addition 失效
    使用草酸添加臭氧漂白工艺

    公开(公告)号：US06458242B1

    公开(公告)日：2002-10-01

    申请号：US09786741

    申请日：2001-03-08

    Applicant: Monica Bokström

    Inventor： Monica Bokström

    IPC: D21C9153

    CPC classification number: D21C9/1036 ,  D21C9/153

    Abstract: Processes are disclosed for bleaching pulp with ozone in an environmentally friendly bleaching plant. The processes include removing a first filtrate from the pulp, bleaching the treated pulp with ozone, washing the bleached pulp with a washing liquid to provide a washed bleached pulp and a second filtrate including oxalic acid, recycling the second filtrate to the pulp prior to the bleaching step, and transferring the first filtrate to the bleached pulp.

    Abstract translation: 公开了在环境友好的漂白设备中用臭氧漂白纸浆的方法。 该方法包括从纸浆中除去第一滤液，用臭氧漂洗处理的纸浆，用洗涤液洗涤漂白的纸浆以提供洗涤的漂白纸浆和含有草酸的第二滤液，将第二滤液再循环到纸浆前 漂白步骤，并将第一滤液转移到漂白纸浆中。

    Formamidinesulfinic-acid compositions
    72.
    发明授权
    Formamidinesulfinic-acid compositions 失效
    甲脒亚磺酸组合物

    公开(公告)号：US06319288B1

    公开(公告)日：2001-11-20

    申请号：US09314008

    申请日：1999-05-19

    Applicant: Harald Jakob ,  Bernd Hopf

    Inventor： Harald Jakob ,  Bernd Hopf

    IPC: D06L310

    CPC classification number: C07C381/14 ,  C11D3/0042 ,  C11D3/124 ,  C11D3/349 ,  D06L4/30 ,  D21C9/1036 ,  D21C9/1084

    Abstract: A blend is disclosed containing formamidinesulfinic acid, an scale-inhibiting agent that can be neutral or acidic, and/or finely divided silica having good flowability to be used for the purpose of reductive bleaching in the paper and textile industries, whereby, in particular, polcarboxylates and polyacrylic acids are employed having a content of about 10% of a polyamide in the form of a copolymer.

    Abstract translation: 公开了一种共混物，其含有甲酰胺亚磺酸，可以是中性或酸性的阻垢剂，和/或具有良好流动性的细分二氧化硅用于纸和纺织工业中的还原性漂白，其中特别地， 使用聚羧酸酯和聚丙烯酸，其含量为共聚物形式的聚酰胺的约10％。

    Process for bleaching cellulose pulp with a bleaching assistant having the formula R1-O-{[(C2H4O)m/(AO)n}]-H
    73.
    发明授权
    Process for bleaching cellulose pulp with a bleaching assistant having the formula R1-O-{[(C2H4O)m/(AO)n}]-H 失效
    用具有式R 1 -O - {[（C 2 H 4 O）m /（AO）n}] - H的漂白助剂漂白纤维素纸浆的方法

    公开(公告)号：US06248209B1

    公开(公告)日：2001-06-19

    申请号：US08945313

    申请日：1997-10-28

    Applicant: Hiroaki Maeda ,  Daisuke Nakamura ,  Nobuo Hisada

    Inventor： Hiroaki Maeda ,  Daisuke Nakamura ,  Nobuo Hisada

    IPC: D21C910

    CPC classification number: D21C9/1036

    Abstract: An aqueous alkaline slurry of cellulose pulp is bleached with oxygen or peroxide by using a compound represented by general formula (1), (2) or (3) as a bleaching assistant: R1—O—[(C2H4O)m/(AO)n]—H  (1) R2—O—[(C2H4O)m/(AO)p]—(AO)q—H  (2) (R3)t—X—[(C2H4O)m/(AO)p]—(AO)r—H  (3) where R1 stands for a branched alkyl group having 6 to 12 carbon atoms, m stands for an average added mol number of 4 to 15, A stands for a propylene, butylene or phenylethylene group, n stands for an average added mol number of 0 to 4, the addition shown in [ ] is in a random or block form, R2 stands for a linear or branched alkyl group having 6 to 12 carbon atoms, p stands for an average added mol number of 0 to 3.9, q stands for an average added mol number of 0.1 to 4, R3 stands for a hydrogen atom, a methyl or ethyl group, or a branched alkyl group having 3 to 12 carbon atoms, t stands for an integer of 1 to 5, X stands for a residual phenol group, and r stands for an average added mol number of from 0 to 4.

    Abstract translation: 使用由通式（1），（2）或（3）表示的化合物作为漂白助剂，用氧或过氧化物漂白纤维素纸浆的水性碱性浆液：其中R1代表具有6-12个碳原子的支链烷基 原子，m表示平均加成摩尔数为4〜15，A表示丙烯，亚丁基或苯基亚乙基，n表示0〜4的平均加成摩尔数，[]表示的加成为无规或 嵌段形式，R2表示碳原子数为6〜12的直链或支链烷基，p表示平均加成摩尔数为0〜3.9，q表示平均加成摩尔数为0.1〜4，R3表示氢 原子，甲基或乙基，或碳原子数为3〜12的支链烷基，t表示1〜5的整数，X表示残留的苯酚基，r表示0的平均加成摩尔数 到4。

    Inhibition of hydrogen peroxide decomposing enzymes during bleaching of cellulose fibers
    75.
    发明授权
    Inhibition of hydrogen peroxide decomposing enzymes during bleaching of cellulose fibers 失效
    在纤维素纤维漂白过程中抑制过氧化氢分解酶

    公开(公告)号：US5885412A

    公开(公告)日：1999-03-23

    申请号：US500934

    申请日：1995-08-08

    Applicant: Enn Paart ,  Kjell Abrahamsson ,  Peter W.ang.llberg

    Inventor： Enn Paart ,  Kjell Abrahamsson ,  Peter W.ang.llberg

    IPC: C12N9/99 ,  D21C5/02 ,  D21C9/10 ,  D21C9/16 ,  D21H11/20

    CPC classification number: D21C9/1036 ,  D21C5/022 ,  D21C9/163 ,  Y02W30/648

    Abstract: A method and composition for suppressing or inhibiting the decomposing action of enzymes on hydrogen peroxide, e.g. peroxidase and catalase, during bleaching of cellulose fibres with hydrogen peroxide, especially in connection with the production of recycled paper, in such a way that microorganisms are not markedly affected, and discharges that are dangerous to the environment are minimized. The composition contains hydroxylamine, thiocyanate salts, formic acid, ascorbic acid or nitrites.

    Abstract translation: PCT No.PCT / SE94 / 01245 Sec。 371日期：1995年8月8日 102（e）日期1995年8月8日PCT 1994年12月22日PCT公布。 WO95 / 17546 PCT公开 日期：1995年6月29日用于抑制或抑制酶对过氧化氢的分解作用的方法和组合物，例如， 过氧化物酶和过氧化氢酶，在用过氧化氢漂白纤维素纤维时，特别是与再生纸的生产有关，使得微生物不会受到显着影响，并且对环境危害的排泄物被最小化。 该组合物含有羟胺，硫氰酸盐，甲酸，抗坏血酸或亚硝酸盐。

    Quaternary compounds as brightness enhancers
    78.
    发明授权
    Quaternary compounds as brightness enhancers 失效
    第四纪化合物作为亮度增强剂

    公开(公告)号：US5458737A

    公开(公告)日：1995-10-17

    申请号：US97696

    申请日：1993-07-27

    Applicant: Leonard L. Diaddario, Jr.

    Inventor： Leonard L. Diaddario, Jr.

    IPC: D21C9/10 ,  D21C9/16

    CPC classification number: D21C9/163 ,  D21C9/1036 ,  D21C9/1084

    Abstract: A process is disclosed for maximizing the brightness of wood pulps which have been treated with anionic bleaching agents wherein the brightness is enhanced by the use of selected quaternary ammonium compounds.

    Abstract translation: 已经公开了一种使用用阴离子漂白剂处理的木浆的亮度最大化的方法，其中通过使用选择的季铵化合物增强了亮度。

    Process for preparing a paper pulp using carbon dioxide as an acidifying agent for a bleached pulp
    79.
    发明授权
    Process for preparing a paper pulp using carbon dioxide as an acidifying agent for a bleached pulp 失效
    使用二氧化碳作为漂白纸浆的酸化剂制备纸浆的方法

    公开(公告)号：US5139613A

    公开(公告)日：1992-08-18

    申请号：US146587

    申请日：1988-01-21

    Applicant: Raymond C. Lachapelle

    Inventor： Raymond C. Lachapelle

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

    CPC classification number: D21C9/1036 ,  D21C9/12 ,  D21C9/163

    Abstract: A process for souring chemical or mechanical cellulosic pulp using carbon dioxide to obtain proper acidification of the pulp slurry. The souring is performed after a single or a multistage bleaching sequence ending with sodium hypochlorite, calcium hypochlorite or hydrogen peroxide or the like in a common process for the preparation of paper pulp. The use of CO.sub.2 permits bleaching to continue because CO.sub.2 does not destroy the bleaching residuals remaining from the single or last bleaching stages.

    Abstract translation: 使用二氧化碳酸化化学或机械纤维素浆料以获得纸浆的适当酸化的方法。 在用于制备纸浆的通用方法中，在以次氯酸钠，次氯酸钙或过氧化氢等结束的单次或多步漂白顺序之后进行酸化。 CO2的使用允许漂白继续，因为二氧化碳不会破坏从单一或最后漂白阶段剩余的漂白残余物。

    Process for oxygen bleaching paper pulp using melamine as a viscosity stabilizer
    80.
    发明授权
    Process for oxygen bleaching paper pulp using melamine as a viscosity stabilizer 失效
    使用三聚氰胺作为粘度稳定剂的氧漂白纸浆的方法

    公开(公告)号：US4526651A

    公开(公告)日：1985-07-02

    申请号：US654283

    申请日：1984-09-24

    Applicant: G. Graham Allan

    Inventor： G. Graham Allan

    IPC: D21C9/10

    CPC classification number: D21C9/1036

    Abstract: This invention is a process for maintaining pulp viscosity while enhancing brightness during the oxygen bleaching stage or stages of pulp preparation in the manufacture of paper comprising adding an effective amount of melamine to paper pulp prior to the oxygen bleaching stage.

    Abstract translation: 本发明是一种维持纸浆粘度的方法，同时在氧气漂白阶段或制纸期间的纸浆制备阶段增强亮度，包括在氧漂白阶段之前向纸浆中加入有效量的三聚氰胺。

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