利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

103 条记录 (耗时 0.022 秒)

    PROCESS FOR MAKING PAPER AND USE OF AN ACID/BASE TREATMENT IN PAPERMAKING
    5.
    发明公开
    PROCESS FOR MAKING PAPER AND USE OF AN ACID/BASE TREATMENT IN PAPERMAKING 有权
    工艺用于造纸生产纸和酸/碱治疗用途

    公开(公告)号：EP2176461A1

    公开(公告)日：2010-04-21

    申请号：EP08760061.5

    申请日：2008-05-27

    申请人： Linde AG ,  Stora Enso Oyj

    发明人： WEAVER, Aila ,  VAHTERI, Risto

    IPC分类号： D21B1/16 ,  D21C9/00 ,  D21H17/64 ,  D21H17/65

    CPC分类号： D21C9/004 ,  D21C9/1036 ,  D21C9/16 ,  D21C9/18

    摘要： The invention relates to a process for making paper, wherein a pulp suspension, which comprises mechanical pulp, is thickened in a dewatering device and is thereafter diluted with water and pumped to a storage tank, then diluted again and made in to paper. According to the invention, the pulp suspension is subjected to an acid - base treatment after the dewatering device. The pH of the suspension is first reduced with a strong acid by 0.5 -4 pH units to a pH between 4 and 6 and then the pH of the suspension is increased with a weak base by 0.5 -3 units to a pH below 8. The invention also relates to the use of an acid - base treatment in a process for making paper, wherein a pulp suspension, which has been thickened in a dewatering device, is subjected to an acid - base treatment for improving the process and/or the product. The invention provides improvements in the brightness of the pulp suspension and/or reduces the need for bleaching agent. The invention also decreases the dissolution of calcium carbonate filler in the process.

    NEW COMPOSITION AND PROCESS FOR THE TREATMENT OF FIBRE MATERIAL
    6.
    发明公开
    NEW COMPOSITION AND PROCESS FOR THE TREATMENT OF FIBRE MATERIAL 有权
    NEUS ZUSAMMENSETZUNG UND VERFAHREN ZUR BEHANDLUNG VON FASERMATERIAL

    公开(公告)号：EP2118363A1

    公开(公告)日：2009-11-18

    申请号：EP08718488.3

    申请日：2008-01-31

    申请人： Kemira OYJ

    发明人： PARÉN, Aarto ,  JÄKÄRÄ, Jukka ,  RAUTIAINEN, Jukka ,  AKSELA, Reijo ,  RENVALL, Ilkka ,  ILOMÄKI, Anna ,  SANKARI, Minna ,  SUNDQUIST, Anna ,  KOSKINEN, Heli ,  HÄMÄLÄINEN, Hannu

    IPC分类号： D21C9/00 ,  D21C9/16 ,  D06L3/02

    CPC分类号： D21C9/00 ,  D06L4/12 ,  D06M15/263 ,  D06M15/3566 ,  D06P5/132 ,  D21C9/16

    摘要： The invention relates to a stabilizing composition comprising following components (A) a polymer having following formula (I) wherein R1 is a hydrogen atom or an alkyl group containing 1 to 12 carbon atoms, R2 is -COOM or -CH2COOM, M is a hydrogen atom, an alkali metal ion, an alkaline earth metal ion, an ammonium ion or a mixture thereof, n, m and k are molar ratios of corresponding monomers, wherein n is 0 to 0.95, m is 0.05 to 0.9, and k is 0 to 0.8, and (n+m+k) equals1, and the weight average molecular weight is between 500 and 20,000,000 g/mol, (B) a chelating agent, (C) a poly-alpha-hydroxyacrylic acid or an alkaline salt thereof or the corresponding polylactone thereof, and (D) optionally a polycarboxylic acid polymer or an alkaline salt thereof. The invention also relates to a process for the treatment of a fibre material.

    摘要翻译： 本发明涉及一种稳定组合物，其包含以下组分（A）具有下式的聚合物：其中R 1是氢原子或含有1至12个碳原子的烷基，R 2是-COOM或-CH 2 COOM，M是氢原子 碱金属离子，碱土金属离子，铵离子或其混合物，n，m和k是相应单体的摩尔比，其中n为0至0.95，m为0.05至0.9，k为0至 0.8，和（n + m + k）等于1，重均分子量为500〜20,000,000g / mol，（B）螯合剂，（C）聚-α-羟基丙烯酸或其碱金属盐 或其相应的聚内酯，和（D）任选的多元羧酸聚合物或其碱式盐。 本发明还涉及一种处理纤维材料的方法。

    PROCEDE DE FONCTIONNALISATION DES CARBOHYDRATES
    7.
    发明公开
    PROCEDE DE FONCTIONNALISATION DES CARBOHYDRATES 有权
    VERFAHREN ZUR DERIVATISIERUNG VON CELLULOSEFASERN AUS PAPIERMASSE

    公开(公告)号：EP2118144A1

    公开(公告)日：2009-11-18

    申请号：EP08761980.5

    申请日：2008-01-25

    申请人： ARKEMA FRANCE

    发明人： CALAIS, Christophe ,  LACHENAL, Dominique ,  MORTHA, Gérard

    IPC分类号： C08B15/04 ,  D21C9/10 ,  C08B31/18

    CPC分类号： D21C9/10 ,  C08B15/04 ,  C08B15/10 ,  D21C9/1036 ,  D21C9/16

    摘要： The invention relates to a method for functionalising carbohydrates, that comprises at least one step during which the carbohydrates react with an oxidising agent in the presence of a copper-phenanthroline complex. The invention more particularly relates to a method for functionalising cellulose fibres for the paper industry.

    摘要翻译： 用于碳水化合物（包括造纸纸浆，纤维素和多糖如淀粉）官能化的方法（M1）涉及在铜 - 菲咯啉络合物存在下碳水化合物与氧化剂（I）反应的至少一个阶段 II）。 还包括（1）通过（a）木质纤维素材料脱木质素（b）漂白阶段（1）处理纸浆中纤维素纤维的功能化方法（M2）的独立权利要求， 在（II）的存在下（2）通过（a）脱木质素，（b）碱性提取，（c）漂白和（d）在（I）的存在下处理纸浆中纤维素纤维的功能化的方法（M3） （II），其中阶段（d）可以在阶段（b）和/或（c）期间进行。

    Chlorine-free organosolv pulps
    9.
    发明公开
    Chlorine-free organosolv pulps 失效
    无氯有机溶剂纸浆

    公开(公告)号：EP0716182A2

    公开(公告)日：1996-06-12

    申请号：EP95118395.3

    申请日：1995-11-22

    申请人： ALCELL TECHNOLOGIES INC.

    发明人： Cronlund, Malcolm ,  Lora, Jairo H. ,  Powers, Jeanne ,  Singh, Uday

    IPC分类号： D21C9/10 ,  D21C9/147 ,  D21C9/153 ,  D21C9/16

    CPC分类号： D21C9/147 ,  D21C9/1057 ,  D21C9/153 ,  D21C9/16

    摘要： This invention provides for a batch and continuous process with countercurrent recycle of bleaching filtrates for the delignification and bleaching of organosolv pulp. Oxygen delignification of organosolv pulp is achieved in excess of from about 50% to about 76% as measured by kappa numbers, while the pulp viscosity is minimally decreased in the range of from about 2 to about 5 cps. Bleaching of delignified pulp is achieved with peroxy compounds and ozone and pulp brightness of from about 82 to 88 ISO can be achieved with pulp containing zero level TOX from chlorine based bleaching chemicals and zero level of AOX in the bleach effluents. Higher brightness of from about 90 to about 92 ISO can also be achieved by addition of very low levels of chlorine based bleaching chemicals. Corresponding bleach effluents contain less than 200 ppm AOX. Bleaching filtrates can be recycled for pulp washing and for use with an organosolv pulping process which results in significant energy savings and mitigation if not elimination of pollution typically associated with chlorine based bleaching. This invention also relates to bleach pulp product derived from the process.

    摘要翻译： 本发明提供了用漂白滤液逆流循环的分批和连续方法，用于有机溶剂纸浆的脱木素和漂白。 如通过卡伯值测量，有机溶剂纸浆的氧脱木质素达到约50％至约76％，而纸浆粘度在约2至约5cps的范围内最小程度地降低。 用过氧化合物和臭氧可以实现脱木素纸浆的漂白，纸浆白度可以达到约82-88 ISO，纸浆含有来自氯漂白化学品的零级TOX和漂白废液中AOX的零级别。 通过添加非常低含量的基于氯的漂白化学品也可实现从约90至约92 ISO的更高亮度。 相应的漂白剂流出物含有小于200ppm的AOX。 漂白滤液可循环用于洗浆并用于有机溶剂制浆工艺，如果不能消除通常与氯漂白相关的污染，则可显着节省能源并减轻能量。 本发明还涉及由该方法得到的漂白纸浆产品。

    OXIDISING AGENTS
    10.
    发明公开
    OXIDISING AGENTS 失效
    氧化剂

    公开(公告)号：EP0682696A1

    公开(公告)日：1995-11-22

    申请号：EP94905803.0

    申请日：1994-02-07

    申请人： WARWICK INTERNATIONAL GROUP LIMITED

    发明人： CROUD, Vincent Brian ,  TOMPSETT, Stephen James

    IPC分类号： A01N37 ,  A61L12 ,  C07C407 ,  C07C409 ,  C11D3 ,  C11D7 ,  D06L3 ,  D21C9

    CPC分类号： D21C9/16 ,  A01N37/16 ,  A61L12/124 ,  C11D3/3907 ,  D06L4/12

    摘要： The use of a bleach activator compound which is an ester of a carboxylic acid to generate peroxy acids in relatively dilute aqueous acidic environments is described. The product is used in situ as an oxidising agent, for instance for use as a bleach, biocide or disinfectant. Preferred processes use aqueous hydrogen peroxide with preferably at a concentration of less than 20 % w/v the sodium salts of nonanoyloxybenzene sulphonate. The pH is preferably less than 6.5.

    摘要翻译： 描述了在相对稀的含水酸性环境中使用漂白活化剂化合物（它是羧酸的酯在过酸中产生过氧酸）。 该产品原位用作氧化剂，例如用作漂白剂，杀生物剂或消毒剂。 优选的方法使用优选浓度小于20％w / v壬酰氧基苯磺酸钠盐的过氧化氢水溶液。 该pH优选小于6.5。