Chemical activation and refining of southern pine kraft fibers
    121.
    发明申请
    Chemical activation and refining of southern pine kraft fibers 审中-公开
    南方松散牛皮纸纤维的化学活化和精制

    公开(公告)号:US20090054863A1

    公开(公告)日:2009-02-26

    申请号:US12152829

    申请日:2008-05-16

    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 I 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: 一种改变纤维素纤维,特别是软木纤维的形态的方法,通过(a)使纤维进行在约I至约9,优选3-7之间的pH下进行的金属离子活化过氧化物处理,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。

    Method for Reducing the Extractives Content of High-Yield Pulps and Method for Producing Bleached High-Yield Pulps
    123.
    发明申请
    Method for Reducing the Extractives Content of High-Yield Pulps and Method for Producing Bleached High-Yield Pulps 审中-公开
    降低高产量纸浆提取物含量的方法及生产漂白高产量纸浆的方法

    公开(公告)号:US20070272378A1

    公开(公告)日:2007-11-29

    申请号:US10590297

    申请日:2005-02-23

    CPC classification number: D21C9/08 D21C9/1036 D21C9/163

    Abstract: The invention relates to a method for reducing the content of extractives of a high-yield pulp in a peroxide bleaching stage, said stage including peroxide bleaching and a subsequent dewatering or washing, said method comprising contacting the pulp in the peroxide bleaching with an organic stabilizer and in or after the peroxide bleaching with a surfactant, and thereafter subjecting the bleached pulp to said dewatering or washing for removing extractives along with the aqueous phase. The invention also relates to a method for producing bleached high-yield pulp.

    Abstract translation: 本发明涉及一种降低过氧化物漂白阶段高产量纸浆提取物含量的方法,所述方法包括过氧化物漂白和随后的脱水或洗涤,所述方法包括使纸浆在过氧化物漂白中与有机稳定剂 并且在用表面活性剂进行过氧化物漂白之后或之后,然后将漂白的纸浆与水相一起进行脱水或洗涤以除去萃取物。 本发明还涉及一种生产漂白的高产量纸浆的方法。

    Culture having phenol oxidase-like activity
    125.
    发明授权
    Culture having phenol oxidase-like activity 失效
    具有酚氧化酶样活性的培养物

    公开(公告)号:US07135184B2

    公开(公告)日:2006-11-14

    申请号:US10515968

    申请日:2003-08-28

    Abstract: It is intended to provide means of efficiently, economically and conveniently dyeing fibers or hair, bleaching pulp or fibers, removing phenol compounds from liquid wastes, degrading endocrine disruptors, producing phenolic resins, producing artificial lacquer coatings, improving wood qualities, etc. A culture of a strain belonging to the genus Flammulina; a culture originating in the above strain which is obtained by culturing the strain at a pH value exceeding 7 and has a phenol oxidase-like activity; a process for producing the culture; a dyeing method which comprises contacting a subject to be dyed with a dye in the presence of the above culture; and a dyeing composition containing the above culture.

    Abstract translation: 旨在提供有效,经济和方便地染色纤维或毛发,漂白纸浆或纤维,从液体废物中除去酚化合物,降解内分泌干扰物,生产酚醛树脂,生产人造漆涂层,改善木材品质等的方法。培养物 属于Flammulina属的菌株; 通过在pH值超过7的条件下培养并具有酚氧化酶样活性而得到的上述菌株的培养物; 一种生产文化的过程; 一种染色方法,其包括在上述培养物存在下使染色对象与染料接触; 和含有上述培养物的染色组合物。

    Peroxide bleaching of wood pulp
    126.
    发明申请

    公开(公告)号:US20060081346A1

    公开(公告)日:2006-04-20

    申请号:US11295611

    申请日:2005-12-07

    CPC classification number: D21C9/163 D21C9/1036 D21C9/1042 D21C9/1084

    Abstract: There is provided a new and useful process for peroxide bleaching of mechanical or high yield pulp, the process comprising adding to a pulp slurry at least one stabilizer for stabilizing low valency states of transition metal ions in the slurry; subsequently adding caustic soda to said slurry simultaneously with or subsequent to adding said at least one stabilizer; adding hydrogen peroxide to the slurry at a preselected point; and subjecting the slurry to preselected conditions to complete the bleaching process.

    Novel catalytic activities of oxidoreductases for oxidation and or bleaching
    127.
    发明申请
    Novel catalytic activities of oxidoreductases for oxidation and or bleaching 审中-公开
    氧化还原酶用于氧化和/或漂白的新型催化活性

    公开(公告)号:US20060054290A1

    公开(公告)日:2006-03-16

    申请号:US10508184

    申请日:2003-01-26

    Inventor: Hans-Peter Call

    CPC classification number: C11D3/38654 C11D7/264 D21C5/005 D21C9/1036

    Abstract: A new enzyme-based process for oxidation and/or bleaching is described, comprising of oxidoreductases such as laccases and/or peroxidases—seperately or in combination—in the presence of their respective co-substrates like O2, air, H2O2, organic peroxides, peracids etc. and comprising of enhancer compounds from the class of oxocarbons, from the class of urazoles and hydrazides, from the class of hydantoins and the class of nitril (Cyan)-compounds, and comprising additionally of carbonyl compounds such as ketones, aldehyds, whereby the combination of enzyme, co-substrate, enhancer compound and carbonyl compound generate active oxygen species like dioxiranes, dioxetanes, peroxy-compounds etc. or form other reactive compounds or transition states like radicals (kation radicals, anion radicals) or reactive (red/ox-active) neutral compounds as oxidizing and/or bleaching agents.

    Abstract translation: 描述了用于氧化和/或漂白的新的基于酶的方法,其包含氧化还原酶如漆酶和/或过氧化物酶 - 单独或组合 - 在它们各自的共底物如O 2 ,空气,H 2 O 2 O 2,有机过氧化物,过酸等,并且包含来自类别的氧杂烃类的增强剂化合物,来自类别的吖唑和酰肼,来自类 的乙内酰脲类和腈类(氰基)化合物,并且还包括羰基化合物如酮,醛,由此酶,辅助底物,增强子化合物和羰基化合物的组合产生活性氧,如二氧杂环丁烷,二氧杂环丁烷,过氧化物 化合物等,或形成其它反应性化合物或过渡态,如自由基(起始自由基,阴离子自由基)或反应性(红/氧 - 活性)中性化合物作为氧化和/或漂白剂。

    Process for bleaching chemical pulp simultaneously with chlorine dioxide, peroxide and a reaction catalyst
    128.
    发明授权
    Process for bleaching chemical pulp simultaneously with chlorine dioxide, peroxide and a reaction catalyst 有权
    用二氧化氯,过氧化物和反应催化剂同时漂白化学纸浆的方法

    公开(公告)号:US06432266B1

    公开(公告)日:2002-08-13

    申请号:US09620439

    申请日:2000-07-20

    CPC classification number: D21C9/1036 D21C9/14 D21C9/163

    Abstract: A process for bleaching chemical pulp for paper manufacturing comprising delignifying and bleaching chemical pulp which has been treated by cooking by simultaneous use of chlorine dioxide, a peroxide, and at least one reaction catalyst selected from the group consisting of oxoacids of elements of Groups IV, V and VI and salts of these acids. Formation of organic chlorine compounds as by-products is suppressed by decreasing the amount of chlorine dioxide used in the ECF bleaching process in the first stage, and thus environmental toxicity in the waste water discharged from the bleaching process is decreased. Chemical pulp having a high degree of brightness is economically produced because increase in the production capacity is not required at all or suppressed to the minimum, and the investment cost is reduced to the minimum when the bleaching with chlorine in the first stage is converted into the bleaching with chlorine dioxide which is an ECF bleaching process.

    Abstract translation: 一种漂白用于造纸的化学纸浆的方法,包括脱木素和漂白化学纸浆,其已经通过同时使用二氧化氯,过氧化物和至少一种选自以下组中的至少一种反应催化剂进行烹饪来处理,所述反应催化剂选自IV族元素的含氧酸, V和VI以及这些酸的盐。 作为副产物的有机氯化合物的形成通过减少在第一阶段的ECF漂白过程中使用的二氧化氯的量来抑制,因此从漂白过程排出的废水中的环境毒性降低。 经济地制造具有高亮度的化学纸浆,因为生产能力的增加根本不需要或被抑制到最低限度,并且当将第一阶段的氯漂白转化为 用作为ECF漂白工艺的二氧化氯漂白。

    Process employing magnesium hydroxide in peroxide bleaching of mechanical pulp
    129.
    发明申请
    Process employing magnesium hydroxide in peroxide bleaching of mechanical pulp 有权
    使用氢氧化镁在机械纸浆的过氧化物漂白中的工艺

    公开(公告)号:US20010050153A1

    公开(公告)日:2001-12-13

    申请号:US09769761

    申请日:2001-01-26

    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漂白木浆。 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。

    Method of bleaching cellulose pulp
    130.
    发明申请
    Method of bleaching cellulose pulp 失效
    漂白纤维素纸浆的方法

    公开(公告)号:US20010017196A1

    公开(公告)日:2001-08-30

    申请号:US09833617

    申请日:2001-04-13

    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-null(C2H4O)m/(AO)nnull-Hnullnull(1)R2-O-null(C2H4O)m/(AO)pnull-(AO)q-Hnullnull(2)(R3)t-X-null(C2H4O)m/(AO)pnull-(AO)r-Hnullnull(3)where R1 stands for a branched alkyl group having 6 to 12 carbon atoms, m stands for an average added mor 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 nullnull 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: 通过使用由通式(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料:<段落lvl =“0” 式R 1 -O - [(C 2 H 4 O)m /(AO)n] -H(1)

    (C2H4O)m /(AO)p] - (AO)qH(2) <段落lvl =“0”>在线公式>(R3)tX - [(C2H4O) m /(AO)p] - (AO)rH(3)其中R1代表具有6至12个碳原子的支链烷基,m代表平均加成摩尔数4至15 A表示丙烯,丁烯或苯乙烯基,n表示0〜4的平均加成摩尔数,[]表示的加成为无规或嵌段状,R 2表示具有6个以上的直链或支链烷基 至12个碳原子,p表示0至3.9的平均加成摩尔数,q表示平均加成摩尔数为0.1至4,R3表示氢原子,甲基或乙基或支链烷基,其具有 3 t o 12个碳原子,t表示1〜5的整数,X表示残留的苯酚基,r表示0〜4的平均加成摩尔数。

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