Process For Manufacturing Paper And Board Having Improved Retention And Drainage Properties
    1.
    发明申请
    Process For Manufacturing Paper And Board Having Improved Retention And Drainage Properties 有权
    制造纸和纸板具有改进的保留和排水性能的方法

    公开(公告)号:US20130139986A1

    公开(公告)日:2013-06-06

    申请号:US13753631

    申请日:2013-01-30

    CPC classification number: D21H17/72 D21H17/375 D21H17/42 D21H17/45 D21H21/10

    Abstract: A method for manufacturing a sheet of paper and/or board having improved retention and drainage properties is provided, according to which, before the formation of the sheet and/or board, at least two retention aids are added to the fibrous suspension. These two retention aids are a main retention aid corresponding to a (co)polymer having a cationic charge density above 2 meq/g, obtained by the Hofmann degradation reaction, and a secondary retention aid corresponding to a water-soluble or water-swellable polymer having an anionic charge density above 0.1 meq/g. The main retention aid is introduced into the fibrous suspension in a proportion of 100 to 800 g/t of dry pulp, and the secondary retention aid is introduced into the fibrous suspension in a proportion of 50 to 800 g/t of dry pulp and has an intrinsic viscosity IV above 3 dl/g.

    Abstract translation: 提供了一种制造具有改进的保留和排出性能的纸张和/或板的方法,根据该方法,在片材和/或板材的形成之前,至少两种助留剂被添加到纤维悬浮液中。 这两种助留剂是对应于通过霍夫曼降解反应获得的具有高于2meq / g的阳离子电荷密度的(共)聚合物的主要助留剂,以及对应于水溶性或水可溶胀聚合物 具有高于0.1meq / g的阴离子电荷密度。 将主要助留剂以100-800g / t的干纸浆的比例引入纤维悬浮液中,并将第二助留剂以50-800g / t的干纸浆的比例引入到纤维悬浮液中,并且 特性粘度IV高于3 dl / g。

    METHOD FOR PRODUCING PAPER AND CARDBOARD
    2.
    发明申请
    METHOD FOR PRODUCING PAPER AND CARDBOARD 有权
    生产纸和卡片的方法

    公开(公告)号:US20090277597A1

    公开(公告)日:2009-11-12

    申请号:US12421740

    申请日:2009-04-10

    Abstract: A method for producing paper, cardboard or similar materials, comprising, separately or in a mixture, adding to a fibrous suspension: at least one main retention agent comprising a cationic (co)polymer, and at least one dual retention agent comprising a crosslinked cationic (co)polymer obtained in the form of a dispersion and placed in solution prior to its introduction into the fibrous suspension with gentle stirring. The crosslinked cationic (co)polymer having—a UL viscosity of between 1.3 and 2.7 cps, preferably between 1.5 and 2.4 cps, and—an apparent cationicity ratio of between 25 and 75%. Optionally, before or after the dual agent or the main retention agent are added, one or more tertiary retention agent(s) selected from the group comprising mineral particles and organic polymers carrying anionic charges, is added to the suspension.

    Abstract translation: 一种用于生产纸,纸板或类似材料的方法,包括单独地或以混合物形式添加到纤维悬浮液中:至少一种包含阳离子(共)聚合物的主保留剂和至少一种包含交联阳离子 (共)聚合物以分散体的形式获得并置于溶液中,然后轻轻搅拌引入纤维悬浮液中。 具有UL粘度为1.3至2.7cps,优选1.5至2.4cps的交联的阳离子(共)聚合物,和表观阳离子比为25至75%。 任选地,在添加双重剂或主要保留剂之前或之后,将一种或多种选自矿物颗粒和携带阴离子电荷的有机聚合物的第三保留剂加入悬浮液中。

    PROCESS FOR THE MANUFACTURE OF PAPER AND BOARD, CORRESPONDING NOVEL RETENTION AND DRAINAGE AIDS, AND PAPER AND BOARD THUS OBTAINED
    3.
    发明申请
    PROCESS FOR THE MANUFACTURE OF PAPER AND BOARD, CORRESPONDING NOVEL RETENTION AND DRAINAGE AIDS, AND PAPER AND BOARD THUS OBTAINED 有权
    造纸和纸板制造过程,对照保护和排水艾滋病以及获得的纸和纸板

    公开(公告)号:US20090050282A1

    公开(公告)日:2009-02-26

    申请号:US11568063

    申请日:2004-11-08

    CPC classification number: D21H23/765 D21H17/42 D21H21/10

    Abstract: A process for the manufacture of paper, board or similar products, comprises first of all, adding, to the paper pulp fibrous suspension, at least one main retention aid composed of a cationic (co)polymer. Then optionally the flocs obtained are sheared. Subsequently there is added to the suspension, separately or as a mixture, in any order: at least one secondary retention aid chosen from the group consisting of silica derivatives and anionic or amphoteric organic polymers, and at least one tertiary retention aid composed of a crosslinked anionic organic polymer with a size of greater than or equal to 1 micrometer and exhibiting an intrinsic viscosity of less than 3 dl/g.

    Abstract translation: 制造纸,纸板或类似产品的方法首先包括向纸浆纤维悬浮液中加入由阳离子(共)聚合物组成的至少一种主助留剂。 然后任选地,所获得的絮凝物被剪切。 随后,以任何顺序将悬浮液,单独或作为混合物加入至少一种选自二氧化硅衍生物和阴离子或两性有机聚合物的第二助留剂,以及至少一种由交联的 尺寸大于或等于1微米的阴离子有机聚合物,其特性粘度小于3dl / g。

    Process for manufacturing paper and board having improved retention and drainage properties
    4.
    发明授权
    Process for manufacturing paper and board having improved retention and drainage properties 有权
    具有改善保留和排水性能的纸和纸板的制造方法

    公开(公告)号:US08999112B2

    公开(公告)日:2015-04-07

    申请号:US13753631

    申请日:2013-01-30

    CPC classification number: D21H17/72 D21H17/375 D21H17/42 D21H17/45 D21H21/10

    Abstract: A method for manufacturing a sheet of paper and/or board having improved retention and drainage properties is provided, according to which, before the formation of the sheet and/or board, at least two retention aids are added to the fibrous suspension. These two retention aids are a main retention aid corresponding to a (co)polymer having a cationic charge density above 2 meq/g, obtained by the Hofmann degradation reaction, and a secondary retention aid corresponding to a water-soluble or water-swellable polymer having an anionic charge density above 0.1 meq/g. The main retention aid is introduced into the fibrous suspension in a proportion of 100 to 800 g/t of dry pulp, and the secondary retention aid is introduced into the fibrous suspension in a proportion of 50 to 800 g/t of dry pulp and has an intrinsic viscosity IV above 3 dl/g.

    Abstract translation: 提供了一种制造具有改进的保留和排出性能的纸张和/或板的方法,根据该方法,在片材和/或板材的形成之前,至少两种助留剂被添加到纤维悬浮液中。 这两种助留剂是对应于通过霍夫曼降解反应获得的具有高于2meq / g的阳离子电荷密度的(共)聚合物的主要助留剂,以及对应于水溶性或水可溶胀聚合物 具有高于0.1meq / g的阴离子电荷密度。 将主要助留剂以100-800g / t的干纸浆的比例引入纤维悬浮液中,并将第二助留剂以50-800g / t的干纸浆的比例引入到纤维悬浮液中,并且 特性粘度IV高于3 dl / g。

    Method for producing paper and cardboard
    5.
    发明授权
    Method for producing paper and cardboard 有权
    纸和纸板的生产方法

    公开(公告)号:US08343311B2

    公开(公告)日:2013-01-01

    申请号:US12421740

    申请日:2009-04-10

    Abstract: A method for producing paper, cardboard or similar materials, comprising, separately or in a mixture, adding to a fibrous suspension: at least one main retention agent comprising a cationic (co)polymer, and at least one dual retention agent comprising a crosslinked cationic (co)polymer obtained in the form of a dispersion and placed in solution prior to its introduction into the fibrous suspension with gentle stirring. The crosslinked cationic (co)polymer having—a UL viscosity of between 1.3 and 2.7 cps, preferably between 1.5 and 2.4 cps, and—an apparent cationicity ratio of between 25 and 75%. Optionally, before or after the dual agent or the main retention agent are added, one or more tertiary retention agent(s) selected from the group comprising mineral particles and organic polymers carrying anionic charges, is added to the suspension.

    Abstract translation: 一种用于生产纸,纸板或类似材料的方法,包括单独地或以混合物形式添加到纤维悬浮液中:至少一种包含阳离子(共)聚合物的主保留剂和至少一种包含交联阳离子 (共)聚合物以分散体的形式获得并置于溶液中,然后轻轻搅拌引入纤维悬浮液中。 具有UL粘度为1.3至2.7cps,优选1.5至2.4cps的交联的阳离子(共)聚合物,和表观阳离子比为25至75%。 任选地,在添加双重剂或主要保留剂之前或之后,将一种或多种选自矿物颗粒和携带阴离子电荷的有机聚合物的第三保留剂加入悬浮液中。

    Process for the manufacture of paper and board
    6.
    发明授权
    Process for the manufacture of paper and board 有权
    制造纸张和纸板的过程

    公开(公告)号:US07815771B2

    公开(公告)日:2010-10-19

    申请号:US11568063

    申请日:2004-11-08

    CPC classification number: D21H23/765 D21H17/42 D21H21/10

    Abstract: A process for the manufacture of paper, board or similar products, comprises first of all, adding, to the paper pulp fibrous suspension, at least one main retention aid composed of a cationic (co)polymer. Then optionally the flocs obtained are sheared. Subsequently there is added to the suspension, separately or as a mixture, in any order: at least one secondary retention aid chosen from the group consisting of silica derivatives and anionic or amphoteric organic polymers, and at least one tertiary retention aid composed of a crosslinked anionic organic polymer with a size of greater than or equal to 1 micrometer and exhibiting an intrinsic viscosity of less than 3 dl/g.

    Abstract translation: 制造纸,纸板或类似产品的方法首先包括向纸浆纤维悬浮液中加入由阳离子(共)聚合物组成的至少一种主助留剂。 然后任选地,所获得的絮凝物被剪切。 随后,以任何顺序将悬浮液,单独或作为混合物加入至少一种选自二氧化硅衍生物和阴离子或两性有机聚合物的第二助留剂,以及至少一种由交联的 尺寸大于或等于1微米的阴离子有机聚合物,其特性粘度小于3dl / g。

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