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    Aqueous dispersed solution of substituted succinic anhydride
    2.
    发明公开
    Aqueous dispersed solution of substituted succinic anhydride 失效
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    公开(公告)号：EP0228801A1

    公开(公告)日：1987-07-15

    申请号：EP86308989.2

    申请日：1986-11-18

    申请人： SEIKO KAGAKU KOGYO CO., LTD. ,  HOKUETSU PAPER MILLS, LTD. ,  NIPPON OIL CO. LTD.

    发明人： Yoshioka, Shigehiko ,  Yamada, Hideto ,  Yata, Akihiro ,  Sato, Hisatake

    IPC分类号： D21H17/33

    CPC分类号： D21H17/375 ,  D21H17/15 ,  D21H17/43 ,  D21H17/455

    摘要： An aqueous dispersion of a substituted succinic anhydride comprising an aqueous soluble copolymer A, or an aqueous soluble copolymer A 2 or a mixture of these two copolymers, the copolymer A, having 50 to 98.5 per cent by mol of (meth)acrylamide (a), 1 to 49.5 per cent by mol of N,N-dialkylamidealkyl(meth)acrylamide (b), and 0.5 to 20 per cent by mol of (meth)acrylic acid (c) as monomer ingredients, the aqueous soluble copolymer A 2 having 70 per cent by weight or more of a mixture monomer ingredient having 50 to 98.5 per cent by mol of (meth)acrylamide (a), 1 to 49.5 per cent by mol of N,N-dialkylaminoalkyl(meth)acrylamide (b) and 0.5 to 20 per cent by mol of (meth)acrylic acid (c) and other copolymer monomer (d) as monomer ingredients. The dispersion is used as a sizing agent and shows a dilute stability in paper-making steps as well as a sufficient sizing effect in a low content addition range, even in acidic paper making without using a calcium carbonate filler, and in neutral paper making using alum.

    摘要翻译： 包含水溶性共聚物A1或水溶性共聚物A2或这两种共聚物的混合物的取代琥珀酸酐的水分散体，共聚物A1具有50〜98.5摩尔％的（甲基）丙烯酰胺（a），1〜 49.5摩尔N，N-二烷基酰胺烷基（甲基）丙烯酰胺（b）和0.5-20％（摩尔）作为单体成分的（甲基）丙烯酸（c），水溶性共聚物A2具有70％ 重量或更多的具有50-98.5％（摩尔）（甲基）丙烯酰胺（a）的混合物单体成分，1至49.5％（摩尔）N，N-二烷基氨基烷基（甲基）丙烯酰胺（b）和0.5-20份 （甲基）丙烯酸（c）和其它共聚物单体（d）作为单体成分。 该分散体用作施胶剂，并且在造纸步骤中显示出稀释的稳定性以及在低含量添加范围内具有足够的施胶效果，即使在酸性造纸中也不使用碳酸钙填料，并且在使用中性造纸 明矾。

    A process for making paper using a substituted succinic anhydride as a sizing agent
    3.
    发明公开
    A process for making paper using a substituted succinic anhydride as a sizing agent 失效
    一种用于使用取代的琥珀酸酐作为施胶剂造纸过程。

    公开(公告)号：EP0257772A1

    公开(公告)日：1988-03-02

    申请号：EP87306365.5

    申请日：1987-07-17

    申请人： SEIKO KAGAKU KOGYO CO., LTD. ,  HOKUETSU PAPER MILLS, LTD. ,  NIPPON OIL CO. LTD.

    发明人： Yoshioka, Shigehiko ,  Yamada, Hideto ,  Honma, Akira ,  Sato, Hisatake

    IPC分类号： D21H17/74 ,  D21H17/06 ,  D21H17/29 ,  D21H17/68

    CPC分类号： D21H17/29 ,  D21H17/16 ,  D21H23/765

    摘要： A process for making paper using a substituted succinic anhydride as a sizing agent which has the steps of preparing pulp slurry containing (a) an aqueous dispersion of a substituted succinic anhydride in which a cationic tapioca starch containing at least 0.3 percent by weight of basic nitrogen is added and mixed, and (b) a colloidal silica, and forming a paper sheet to improve the retentions of a fine fiber and a filler in the pulp slurry in the sheet forming step and to largely suppress the operation of decreasing the sizing performance of the substituted succinic anhydride with the colloidal silica (b) added as the retention aid, thereby preparing sheet paper having excellent sizing effect. Thus, the process for making paper can not only remarkably reduce the sizing cost but can also efficiently utilize the fine fiber and the filler in the pulp slurry.

    摘要翻译： 一种用于使用substituiertem琥珀酸酐作为上浆剂，其具有制备纸浆淤浆含的步骤的造纸方法（a）一个substituiertem琥珀酸酐的水性分散体，其中阳离子木薯淀粉重量碱性氮的含至少0.3％的 加入并混合，以及（b）一种胶态二氧化硅，以及形成纸页，以提高细纤维的保留和在片材形成工序中的纸浆浆料中的填料和在很大程度上抑制降低的施胶性能的手术 与胶体二氧化硅（b）该substituiertem琥珀酸酐加入作为助留剂，由此制备具有优异的施胶效果纸片。 因此，用于制造纸不仅可以显着降低成本的大小，但可以因此有效地利用细纤维，并在纸浆浆料的填料的处理。

    Aqueous dispersed solution of substituted succinic anhydride and process for producing the same
    6.
    发明公开
    Aqueous dispersed solution of substituted succinic anhydride and process for producing the same 失效
    取代的琥珀酸酐及其制造方法相同的分散而成的水溶液。

    公开(公告)号：EP0177260A1

    公开(公告)日：1986-04-09

    申请号：EP85306818.7

    申请日：1985-09-25

    申请人： SEIKO KAGAKU KOGYO CO., LTD. ,  NIPPON OIL CO. LTD. ,  HOKUETSU PAPER MILLS, LTD.

    发明人： Yoshioka, Shigehiko ,  Yamada, Hideto ,  Kamei, Motokazu ,  Sato, Hisatake

    IPC分类号： D21H3/02

    CPC分类号： D21H17/455 ,  D21H17/15 ,  D21H17/16 ,  D21H17/375

    摘要： An aqueous dispersed solution of a substituted succinic anhydride which comprises an aqueous soluble copolymer (A) having 50 percent or more by mol of (meth)acrylamide (a) 1 percent or more by mol of N,N-dialkylamino.alkyl(methy)-acrylamide (b) as monomer ingredients, aqueous soluble copolymer (B) having 50 percent or more by mol of (meth)acrylamide (a), 1 percent or more by mold of N,N-dialkylamino.alkyl(meth)acrylamide (b) and 49 percent or less by mol of other copolymer monomer (c) as monomer ingredients, or both of the aqueous soluble copolymer (A) and the aqueous soluble copolymer (B), and a process for producing an aqueous dispersed solution of a substituted succinic anhydride prepared by dispersing the aqueous soluble copolymer (A) or the aqueous soluble copolymer (B) or a mixture (C) of 99 to 99.9 percent by weight of the substituted succinic anhydride (d) and 10 to 0.1 percent by weight of an oil-in-water type surfactant (e) in aqueous solution containing both the aqueous soluble copolymer (A) and the aqueous soluble copolymer (B). Thus, the aqueous dispersion can provide an excellent sizing effect in case applied as a sizing agent in paper making process but also has preferable dilute dispersibility of aqueous dispersion, does not possibly contaminate wires, rolls and carpets of a paper making machine when applied as a sizing agent in the practical paper making process with properties of capable of continuously operating for a long period of time.