PROCESS FOR THE PRODUCTION OF PAPER, BOARD AND CARDBOARD HAVING HIGH DRY STRENGTH
    1.
    发明申请
    PROCESS FOR THE PRODUCTION OF PAPER, BOARD AND CARDBOARD HAVING HIGH DRY STRENGTH 失效
    生产具有高干燥强度的纸板,纸板和纸板的工艺

    公开(公告)号:US20110048660A1

    公开(公告)日:2011-03-03

    申请号:US12990763

    申请日:2009-05-14

    IPC分类号: D21H17/33 D21H17/37 D21H17/45

    CPC分类号: D21H21/18 D21H17/42 D21H17/44

    摘要: Process for the production of paper, board and cardboard having high dry strength by separate addition of a water-soluble cationic polymer and of an aqueous dispersion of a water-insoluble polymer having a content of acid groups of not more than 10 mol % or of an aqueous dispersion of a nonionic polymer, which dispersion has been made anionic, to a paper stock, draining of the paper stock and drying of the paper products. Preferably, the polymers are added to a paper stock which has a temperature of at least 40° C.

    摘要翻译: 通过分开加入水溶性阳离子聚合物和具有不大于10mol%的酸基含量的​​水不溶性聚合物的水分散体或通过单独添加水溶性聚合物的水分散体,生产具有高干燥强度的纸,纸板和纸板的方法, 非离子聚合物的水性分散体,其分散体已经被制成阴离子型,到纸料中,排出纸料并干燥纸制品。 优选地,将聚合物加入到具有至少40℃的温度的纸料中

    Production of paper, card and board
    3.
    发明授权
    Production of paper, card and board 有权
    生产纸张,纸牌和纸板

    公开(公告)号:US08753479B2

    公开(公告)日:2014-06-17

    申请号:US13526710

    申请日:2012-06-19

    摘要: The invention relates to a process for the production of paper, card and board, including the steps of draining a filler-containing paper stock, having a certain fibrous concentration and containing at least one water-soluble amphoteric copolymer, with sheet formation in a wire section, then pressing the paper in a press section, diluting the paper stock to a fibrous concentration in the range from 5 to 15 g/l, draining the diluted paper stock to form a sheet, and then pressing the sheet in the press section to a solids content G(x) wt % or greater, such that G(x) computes according to: G(x)=48+(x−15)·0.4, where x is the numerical value of a filler content of the dry paper, card or board (in wt %), and G(x) is a numerical value of the minimal solids content (in wt %) to which the sheet is pressed.

    摘要翻译: 本发明涉及一种生产纸张,卡片和纸板的方法,包括以下步骤:排出具有一定纤维浓度并含有至少一种水溶性两性共聚物的含有填料的纸料, 然后在压榨部中按压纸张,将纸料稀释至5至15g / l范围内的纤维浓度,排出稀释的纸料以形成片材,然后将压片部分中的片材按压至 固体含量G(x)wt%以上,使得G(x)根据G(x)= 48 +(x-15)·0.4计算,其中x是干燥的填料含量的数值 纸张,卡片或纸板(以重量%计),G(x)是片材被压制的最小固体含量(以重量%计)的数值。

    Process for the production of paper, board and cardboard having high dry strength
    6.
    发明授权
    Process for the production of paper, board and cardboard having high dry strength 失效
    用于生产干燥强度高的纸张,纸板和纸板的方法

    公开(公告)号:US08597466B2

    公开(公告)日:2013-12-03

    申请号:US12990763

    申请日:2009-05-14

    IPC分类号: D21H11/00

    CPC分类号: D21H21/18 D21H17/42 D21H17/44

    摘要: Process for the production of paper, board and cardboard having high dry strength by separate addition of a water-soluble cationic polymer and of an aqueous dispersion of a water-insoluble polymer having a content of acid groups of not more than 10 mol % or of an aqueous dispersion of a nonionic polymer, which dispersion has been made anionic, to a paper stock, draining of the paper stock and drying of the paper products. Preferably, the polymers are added to a paper stock which has a temperature of at least 40° C.

    摘要翻译: 通过分开加入水溶性阳离子聚合物和具有不大于10mol%的酸基含量的​​水不溶性聚合物的水分散体或通过单独添加水溶性聚合物的水分散体,生产具有高干燥强度的纸,纸板和纸板的方法, 非离子聚合物的水性分散体,其分散体已经被制成阴离子型,到纸料中,排出纸料并干燥纸制品。 优选地,将聚合物加入到具有至少40℃的温度的纸料中

    Production of paper
    7.
    发明授权
    Production of paper 有权
    生产纸张

    公开(公告)号:US08382948B2

    公开(公告)日:2013-02-26

    申请号:US12996688

    申请日:2009-06-09

    IPC分类号: D21H11/00

    摘要: The use of water-soluble, amphoteric copolymers which are obtainable by copolymerization of a) at least one N-vinylcarboxamide of the general formula in which R1 and R2, independently of one another, are H or C1- to C6-alkyl, b) at least one monomer which is selected from the group consisting of (b1) monoethylenically unsaturated sulfonic acids, phosphonic acids, phosphoric acid esters and derivatives thereof, and (b2) monoethylenically unsaturated mono- and dicarboxylic acids, the salts thereof and dicarboxylic anhydrides, c) if appropriate, at least one monoethylenically unsaturated monomer differing from the components (a) and (b), and d) if appropriate, at least one compound which has at least two ethylenically unsaturated double bonds in the molecule, with the proviso that the monomer mixture comprises at least one monomer (b) having at least one free acid group and/or an acid group in salt form,and subsequent partial or complete hydrolysis of the groups —CO—R1 from the monomers (a) incorporated in the form of copolymerized units into the copolymer,as agents for increasing the initial wet web strength of paper.

    摘要翻译: 通过使a)至少一种通式的N-乙烯基甲酰胺与其中R 1和R 2彼此独立地是H或C 1至C 6烷基的共聚获得的水溶性两性共聚物的用途,b) 至少一种选自(b1)单烯键式不饱和磺酸,膦酸,磷酸酯及其衍生物的单体和(b2)单烯属不饱和单羧酸和二羧酸,其盐和二羧酸酐,c )如果合适,至少一种不同于组分(a)和(b)的单烯属不饱和单体,和d)如果合适,至少一种在分子中具有至少两个烯属不饱和双键的化合物,条件是 单体混合物包含至少一种具有至少一种盐形式的游离酸基团和/或酸基团的单体(b),随后从单体部分或完全水解基团-CO-R1 (a)以共聚单元的形式引入共聚物中,作为用于增加纸的初始湿纸幅强度的试剂。

    PRODUCTION OF PAPER
    8.
    发明申请
    PRODUCTION OF PAPER 有权
    生产纸张

    公开(公告)号:US20110079365A1

    公开(公告)日:2011-04-07

    申请号:US12996688

    申请日:2009-06-09

    IPC分类号: D21H17/55 D21H17/58

    摘要: The use of water-soluble, amphoteric copolymers which are obtainable by copolymerization of a) at least one N-vinylcarboxamide of the general formula in which R1 and R2, independently of one another, are H or C1- to C6-alkyl, b) at least one monomer which is selected from the group consisting of (b1) monoethylenically unsaturated sulfonic acids, phosphonic acids, phosphoric acid esters and derivatives thereof, and (b2) monoethylenically unsaturated mono- and dicarboxylic acids, the salts thereof and dicarboxylic anhydrides, c) if appropriate, at least one monoethylenically unsaturated monomer differing from the components (a) and (b), and d) if appropriate, at least one compound which has at least two ethylenically unsaturated double bonds in the molecule, with the proviso that the monomer mixture comprises at least one monomer (b) having at least one free acid group and/or an acid group in salt form,and subsequent partial or complete hydrolysis of the groups —CO—R1 from the monomers (a) incorporated in the form of copolymerized units into the copolymer,as agents for increasing the initial wet web strength of paper.

    摘要翻译: 通过使a)至少一种通式的N-乙烯基甲酰胺与其中R 1和R 2彼此独立地是H或C 1至C 6烷基的共聚获得的水溶性两性共聚物的用途,b) 至少一种选自(b1)单烯键式不饱和磺酸,膦酸,磷酸酯及其衍生物的单体和(b2)单烯属不饱和单羧酸和二羧酸,其盐和二羧酸酐,c )如果合适,至少一种不同于组分(a)和(b)的单烯属不饱和单体,和d)如果合适,至少一种在分子中具有至少两个烯属不饱和双键的化合物,条件是 单体混合物包含至少一种具有至少一种盐形式的游离酸基团和/或酸基团的单体(b),随后从单体部分或完全水解基团-CO-R1 (a)以共聚单元的形式引入共聚物中,作为用于增加纸的初始湿纸幅强度的试剂。