Production of paper and cardboard
    1.
    发明授权
    Production of paper and cardboard 失效
    生产纸和纸板

    公开(公告)号:US4749444A

    公开(公告)日:1988-06-07

    申请号:US920604

    申请日:1986-10-20

    摘要: Paper and cardboard are produced by draining a paper stock by a method in which a stock having a consistency of from 2.5 to 5% by weight is used as a starting material, and (a) from 0.1 to 2% by weight of an activated bentonite are added and the stock consistency is then brought to 0.3-2% by weight by dilution with water, after which (b) from 0.01 to 0.1% by weight of a cationic polyelectrolyte having a charge density of not less than 4 meq/g of polyelectrolyte is added and distributed therein, and, after thorough mixing (c) from 0.003 to 0.3% by weight of a high molecular weight polymer based on acrylamide or methacrylamide is metered in and mixed with the paper stock, the percentages in each case being based on dry paper stock, and the resulting pulp is drained on a wire. The paper obtained is distinguished in particular by good printing properties in the offset printing process.

    摘要翻译: 纸和纸板是通过以2.5〜5重量%的浓度的原料作为起始原料的方法排出纸料而制造的,(a)0.1〜2重量%的活性膨润土 然后通过用水稀释使原料浓度达到0.3-2重量%,之后(b)0.01至0.1重量%的电荷密度不小于4meq / g的阳离子聚电解质 将聚电解质加入并分配,并在充分混合后(c)0.003至0.3重量%的基于丙烯酰胺或甲基丙烯酰胺的高分子量聚合物计量加入并与纸料混合,每种情况下的百分比为 在干纸上,并将所得纸浆排出线。 所得到的纸张特别是在胶版印刷工艺中具有良好的印刷性能。

    Aqueous pigment slurries and their use in the production of
filler-containing paper
    3.
    发明授权
    Aqueous pigment slurries and their use in the production of filler-containing paper 失效
    水性颜料浆料及其在生产含填料纸中的应用

    公开(公告)号:US5695610A

    公开(公告)日:1997-12-09

    申请号:US612828

    申请日:1996-03-15

    CPC分类号: D21H17/56

    摘要: Aqueous pigment slurries which contain up to 80% by weight of a finely divided pigment in dispersed form and from 0.1 to 5% by weight of a water-soluble reaction product of (a) a polyamidoamine grafted with ethyleneimine and (b) a bifunctional or polyfunctional crosslinking agents which have a halohydrin, glycidyl, aziridine or isocyanate unit or a halogen atom as a functional group, the reaction product, in 25% strength by weight aqueous solution at 20.degree. C., having a viscosity of at least 100 mPa.s, are used as an additive to the paper stock in the production of filler-containing paper.

    摘要翻译: PCT No.PCT / EP94 / 03304 Sec。 371日期:1996年3月15日 102(e)1996年3月15日PCT 1994年10月6日PCT PCT。 出版物WO95 / 10662 日期:1995年04月20日水性颜料浆料含有高达80重量%的分散形式的细分散颜料和0.1至5重量%的(a)接枝乙烯亚胺和(a)的聚酰胺胺的水溶性反应产物, b)具有卤代醇,缩水甘油基,氮丙啶或异氰酸酯单元或卤素原子作为官能团的双官能或多官能交联剂,该反应产物在25℃下在25重量%的重量水溶液中具有粘度为 至少100mPa.s,用作在含有填料的纸的纸料中的添加剂。

    Method for producing paper, pulpboard and cardboard
    7.
    发明授权
    Method for producing paper, pulpboard and cardboard 有权
    生产纸张,纸板和纸板的方法

    公开(公告)号:US06303002B1

    公开(公告)日:2001-10-16

    申请号:US09403008

    申请日:1999-10-15

    IPC分类号: D21H2102

    CPC分类号: D21H21/02 Y10S162/04

    摘要: Paper, board and cardboard are produced from paper stocks which contain tacky impurities by the addition of surfactants and cationic polymers having a charge density of at least 1.5 meq/g (measured at pH 7) and a molar mass Mw of the cationic polymers of at least 15,000 and drainage of the paper stocks with fixation of the tacky impurities in the paper produced.

    摘要翻译: 纸,纸板和纸板由含有粘性杂质的纸料通过添加表面活性剂和阳离子聚合物生产,所述表面活性剂和电荷密度至少为1.5meq / g(在pH7下测量)和阳离子聚合物的摩尔质量Mw 最少15,000张,并将造纸纸中的粘性杂质固定在纸上。