Process for the production of paper
    2.
    发明授权
    Process for the production of paper 有权
    生产纸张的过程

    公开(公告)号:US6100322A

    公开(公告)日:2000-08-08

    申请号:US165431

    申请日:1998-10-02

    摘要: The invention relates to a process for the production of paper from a suspension of cellulose containing fibers, and optional fillers, comprising adding to the suspension a low molecular weight cationic organic polymer, a high molecular weight cationic or amphoteric polymer and anionic inorganic particles, forming and draining the suspension on a wire, wherein the low molecular weight polymer has a molecular weight below 700,000 and the high molecular weight polymer has a molecular weight above 1,000,000, said polymers being simultaneously added to the suspension. The invention further relates to a polymer mixture in the form of an aqueous dispersion comprising at least one high molecular weight cationic or amphoteric acrylamide-based polymer having a molecular weight above 1,000,000, at least one low molecular weight cationic organic polymer having a molecular weight below 700,000 and at least one water-soluble inorganic salt, the weight ratio of said high molecular weight polymer to said low molecular weight polymer being within the range of from 9:1 to 1:2.

    摘要翻译: 本发明涉及一种由含纤维素纤维和任选填料的悬浮液生产纸的方法,包括向悬浮液中加入低分子量阳离子有机聚合物,高分子量阳离子或两性聚合物和阴离子无机颗粒,形成 并将所述悬浮液排入导线上,其中所述低分子量聚合物的分子量低于700,000,所述高分子量聚合物的分子量高于1,000,000,所述聚合物同时加入到悬浮液中。 本发明还涉及水分散体形式的聚合物混合物,其包含至少一种分子量高于1,000,000的至少一种高分子量阳离子或两性丙烯酰胺基聚合物,至少一种低分子量阳离子有机聚合物,其分子量低于 700,000和至少一种水溶性无机盐,所述高分子量聚合物与所述低分子量聚合物的重量比在9:1至1:2的范围内。

    Pigment composition
    3.
    发明申请
    Pigment composition 审中-公开
    颜料组成

    公开(公告)号:US20060112855A1

    公开(公告)日:2006-06-01

    申请号:US11267757

    申请日:2005-11-03

    IPC分类号: B41M5/00 C04B14/00

    摘要: The invention relates to a pigment composition in the form of an aqueous dispersion or slurry comprising: (c) porous aggregates formed by aggregation of colloidal primary particles of silica, aluminosilicate or a mixture thereof in an aqueous sol, said porous aggregates having a mean diameter from about 0.03 to about 25 μm, and, (d) extender particles where the mean size of at least one dimension is larger than the mean diameter of the porous aggregates, wherein the weight ratio of porous aggregates to extender particles is from about 0.01:1 to about 3:1. The invention further relates to a process for its production, a composition for coating paper or paper board and a process for its production, and a process for coating paper or paper board and paper or paper board obtainable by the process.

    摘要翻译: 本发明涉及水性分散体或浆料形式的颜料组合物,其包含:(c)通过在水性溶胶中聚集二氧化硅,硅铝酸盐或其混合物的胶体一次粒子形成的多孔聚集体,所述多孔聚集体具有平均直径 约0.03至约25μm,和(d)至少一个维度的平均尺寸大于多孔聚集体的平均直径的增量剂颗粒,其中多孔聚集体与增量剂颗粒的重量比为约0.01: 1至约3:1。 本发明还涉及其生产方法,用于涂布纸或纸板的组合物及其生产方法,以及可通过该方法获得的纸或纸板和纸或纸板的涂布方法。

    Pigment composition
    4.
    发明申请
    Pigment composition 审中-公开
    颜料组成

    公开(公告)号:US20060099408A1

    公开(公告)日:2006-05-11

    申请号:US11267758

    申请日:2005-11-03

    IPC分类号: B32B5/16 B05D3/02

    摘要: The present invention relates to a process for the production of coated paper or paperboard comprising a step of applying a pigment composition as a coating to at least one side of a paper or paperboard web, said pigment composition being an aqueous dispersion comprising as pigment particles optionally aggregated colloidal particles of silica or aluminosilicate prepared from alkali metal silicate by ion exchange or pH-reduction and having a surface area from about 30 m2/g to about 450 m2/g, and at least one cationic component selected from the group consisting of water soluble aluminium salts and cationic polymers with a molecular weight from about 2000 to about 1000000 and a charge density from about 0.2 meq/g to about 12 meq/g, wherein at least about 0.4 g pigment particles from the pigment composition are applied per m2 coated side of the paper or paper board web.

    摘要翻译: 本发明涉及一种生产涂布纸或纸板的方法,包括将颜料组合物作为涂料施加到纸或纸板网的至少一侧的步骤,所述颜料组合物是包含任选地作为颜料颗粒的水分散体 通过离子交换或pH降低由碱金属硅酸盐制备的二氧化硅或硅铝酸盐的聚集胶体颗粒,其表面积为约30m 2 / g至约450m 2 / / g,以及选自水溶性铝盐和分子量约2000至约1000000的阳离子聚合物和约0.2meq / g至约12meq / g的电荷密度的至少一种阳离子组分,其中 在纸或纸板幅材的每一个涂层的一侧施加至少约0.4g来自颜料组合物的颜料颗粒。

    Pigment composition
    6.
    发明申请
    Pigment composition 审中-公开
    颜料组成

    公开(公告)号:US20060100338A1

    公开(公告)日:2006-05-11

    申请号:US11267756

    申请日:2005-11-03

    IPC分类号: C08K3/34

    CPC分类号: C08K3/36 C08K3/24 C08K3/34

    摘要: The present invention relates to a pigment composition in the form of an aqueous dispersion comprising: (d) pigment particles of synthetic amorphous silica or aluminosilicate; (e) at least one water soluble aluminium salt; and, (f) at least one cationic polymer having a molecular weight from about 2000 to about 1000000 and a charge density from about 0.2 to about 12 meq/g. The invention further relates to a process for its production, use thereof, a process for coating paper or paper board and paper or paper board obtainable by the process.

    摘要翻译: 本发明涉及水分散体形式的颜料组合物,其包含:(d)合成无定形二氧化硅或硅铝酸盐的颜料颗粒; (e)至少一种水溶性铝盐; 和(f)至少一种具有约2000至约1000000的分子量和约0.2至约12meq / g的电荷密度的阳离子聚合物。 本发明还涉及一种其制造方法,其用途,用于涂布纸或纸板的方法以及可通过该方法获得的纸或纸板。

    Process for the production of paper
    7.
    发明申请
    Process for the production of paper 有权
    生产纸张的过程

    公开(公告)号:US20060130991A1

    公开(公告)日:2006-06-22

    申请号:US11302941

    申请日:2005-12-14

    IPC分类号: D21H23/76 D21H17/44

    摘要: The present invention relates to a process for producing paper which comprises: (vii) providing an aqueous suspension comprising cellulosic fibres, (viii) adding to the suspension after all points of high shear: a first polymer being a cationic polymer having a charge density above 2.5 meq/g; a second polymer; and a third polymer being an organic or inorganic anionic polymer; and (ix) dewatering the obtained suspension to form paper.

    摘要翻译: 本发明涉及一种生产纸的方法,其包括:(vii)提供包含纤维素纤维的水性悬浮液,(viii)在所有高剪切点之后向悬浮液中加入:第一聚合物是具有高于电荷密度的阳离子聚合物 2.5meq / g; 第二聚合物; 和第三聚合物是有机或无机阴离子聚合物; 和(ix)将获得的悬浮液脱水形成纸。