Method for producing paper, paperboard and cardboard using an uncrosslinked fixing agent during paper stock draining
    7.
    发明授权
    Method for producing paper, paperboard and cardboard using an uncrosslinked fixing agent during paper stock draining 有权
    纸张排水期间使用未交联固定剂生产纸,纸板和纸板的方法

    公开(公告)号:US06576086B1

    公开(公告)日:2003-06-10

    申请号:US09403769

    申请日:1999-11-02

    IPC分类号: D21C2110

    摘要: Paper, board and cardboard are produced by draining paper stock containing interfering substances in the presence of fixing agents by a process in which the fixing agents used are reaction products which are obtainable by reacting amino- and/or ammonium-containing polymers selected from the group consisting of the polymers containing vinylamine units polyalkylene polyamines polyamidoamines ethyleneimine-grafted polyamidoamines which may be crosslinked, polydiallyldimethylammonium chlorides polymers containing dialkylaminoalkylacrylamide units or dialkylaminoalkylmethacrylamide units and polyallylamines and dicyandiamide and formaldehyde condensates with reactive sizes for paper in a weight ratio of polymer to reactive size of from 15,000:1 to 1:1, and the reaction products thus obtainable are used as fixing agents for water-soluble and for water-insoluble interfering substances in the production of paper, board and cardboard from paper stocks containing interfering substances.

    摘要翻译: 纸,纸板和纸板是通过在固定剂存在下排出含有干扰物质的纸原料而制备的,其中所用的固定剂是通过使选自下组的氨基和/或含铵聚合物反应获得的反应产物 由聚合物单体聚亚烷基多胺聚酰氨基亚胺亚甲基亚胺接枝的聚酰氨基胺,其可以是交联的,含二烷基氨基烷基丙烯酰胺单元或二烷基氨基烷基甲基丙烯酰胺单元的聚二烯丙基二甲基氯化铵聚合物和聚烯丙基胺和双氰胺和甲醛缩合物,聚合物与反应性大小的重量比为15,000:1至1:1 ,由此可得到的反应产物用作纸,纸板和纸板的水溶性固定剂和含有干扰物质的纸料的水不溶性干扰物质。

    Modified, fine-particle, water-insoluble aziridine polymer and use
therefore for removing heavy metals from aqueous solution
    8.
    发明授权
    Modified, fine-particle, water-insoluble aziridine polymer and use therefore for removing heavy metals from aqueous solution 失效
    改性,细颗粒,水不溶性的氮丙啶聚合物及其用于从水溶液中除去重金属的用途

    公开(公告)号:US6063286A

    公开(公告)日:2000-05-16

    申请号:US147170

    申请日:1998-10-22

    摘要: Process for preparing fine-particle, water-insoluble polymers of aziridines by polymerizing aziridines, preferably ethylenimine, in the presence of crosslinkers which contain at least two functional groups, and in at least one ether, and also modified, water-insoluble polymers of aziridines which can be obtained by reacting fine-particle, water-insoluble, crosslinked polymers of aziridines, in aqueous medium, with carbon disulfide or formaldehyde and a nucleophilic agent from the group consisting of alkali metal cyanides, primary amines, secondary amines, alkali metal sulfites and alkali metal phosphites, and use of the modified and non-modified fine-particle, water-insoluble polymers for immobilizing active compounds, as absorbents for aldehydes, ketones and acids, and also for removing heavy metal ions from wastewaters.

    摘要翻译: PCT No.PCT / EP97 / 02062 Sec。 371日期:1998年10月22日 102(e)日期1998年10月22日PCT 1997年4月23日PCT公布。 WO97 / 40088 PCT公开 日期1997年10月30日通过在含有至少两个官能团的交联剂和至少一种醚以及改性的水的存在下聚合氮丙啶,优选乙烯亚胺来制备氮丙啶的微粒,水不溶性聚合物的方法 不溶性的氮丙啶聚合物,其可以通过将水性介质中的微粒,水不溶性,交联的丙烯腈交联聚合物与二硫化碳或甲醛反应而获得,并且亲核试剂由碱金属氰化物,伯胺,仲 胺,碱金属亚硫酸盐和碱金属亚磷酸盐,以及用于固定活性化合物的改性和未改性的微粒,水不溶性聚合物作为醛,酮和酸的吸收剂,以及用于从废水中除去重金属离子 。