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    Composition for increasing wet strength of paper
    1.
    发明公开
    Composition for increasing wet strength of paper 审中-公开
    Zusammensetzung zurErhöhungder Papiernassfestigkeit

    公开(公告)号：EP1308558A2

    公开(公告)日：2003-05-07

    申请号：EP02024127.9

    申请日：2002-10-29

    申请人： DAI-ICHI KOGYO SEIYAKU CO., LTD.

    发明人： Doi, Takeshi ,  Miyamura, Takeshi ,  Kouchi, Masahiro

    IPC分类号： D21H21/20

    CPC分类号： D21H21/20 ,  C08G18/0814 ,  C08G18/10 ,  D21H17/57 ,  C08G18/2875 ,  C08G18/281

    摘要： For use as a wet strength agent, a water-soluble blocked urethane prepolymer having a hydrophilic group and a blocked isocyanate group is combined with a cationic charge-adjusting agent. The adsorption and retention of the water-soluble blocked urethane prepolymer to cellulosic fiber are promoted by virtue of the cationic charge adjusting agent when the wet strength agent is added to a papermaking stock.

    摘要翻译： 作为湿强力剂，将具有亲水性基团和封端异氰酸酯基的水溶性封端氨基甲酸酯预聚物与阳离子电荷调节剂结合。 当将湿强度剂加入到造纸原料中时，通过阳离子电荷调节剂促进水溶性封端氨基甲酸酯预聚物对纤维素纤维的吸附和保留。

    Blocked urethane prepolymers as paper wet strength agent
    3.
    发明公开
    Blocked urethane prepolymers as paper wet strength agent 有权
    BlockierteUrethanpräpolymereals NassfestigkeitsmittelfürPapier

    公开(公告)号：EP1178151A1

    公开(公告)日：2002-02-06

    申请号：EP01118439.7

    申请日：2001-07-31

    申请人： DAI-ICHI KOGYO SEIYAKU CO., LTD.

    发明人： Doi, Takeshi ,  Saiuchi, Naofumi ,  Kouchi, Masahiro

    IPC分类号： D21H17/57 ,  D21H21/20

    CPC分类号： D21H21/20 ,  C08G18/10 ,  C08G18/12 ,  D21H17/57 ,  C08G18/2815 ,  C08G18/2875

    摘要： Paper with increased wet strength is produced by adding to the stock a water soluble blocked urethane prepolymer having a plurality of blocked isocyanate groups and hydrophilic groups. The blocking agent is a phenol compound having an electron-attracting group at the ortho- or para-position. The blocked urethane prepolymer is capable of unblocking under such conditions that encounter in the drying part of conventional paper making machines.

    摘要翻译： 通过向原料中加入具有多个封端异氰酸酯基团和亲水基团的水溶性封端氨基甲酸酯预聚物来生产湿强度增加的纸。 封端剂是在邻位或对位具有吸电子基团的酚化合物。 封闭的氨基甲酸酯预聚物能够在常规造纸机的干燥部分遇到的条件下解封。

    A shrink-proofing agent for keratin fibers and a process for shrink-proofing using the same
    4.
    发明公开
    A shrink-proofing agent for keratin fibers and a process for shrink-proofing using the same 审中-公开
    SchrumpffestmittelfürKeratinfasern sowie Verfahren zum Schrumpffestmachen mit diesem Mittel

    公开(公告)号：EP1353005A1

    公开(公告)日：2003-10-15

    申请号：EP02007935.6

    申请日：2002-04-09

    申请人： DAI-ICHI KOGYO SEIYAKU CO., LTD.

    发明人： Doi, Takeshi ,  Saiuchi, Naofumi ,  Kouchi, Masahiro ,  Miyamura, Takeshi

    IPC分类号： D06M15/568 ,  D06M15/572 ,  D06M15/564 ,  C08G18/10

    CPC分类号： D06M15/572 ,  C08G18/0814 ,  C08G18/10 ,  C08G18/4837 ,  D06M15/564 ,  D06M15/568 ,  C08G18/286 ,  C08G18/284 ,  C08G18/287 ,  C08G18/3271 ,  C08G18/2815

    摘要： The invention provides a shrink-proofing agent which is a non-chlorinated compound, and is sufficiently resinified only by heating in a drying step, and further has an excellent shrink-resistant performance and an excellent washing resistance and can retain the texture characteristic of keratin fibers. The invention uses the shrink-proofing agent containing a water-soluble heat-reactive urethane prepolymer wherein a part of isocyanate groups are reacted with an active hydrogen compound to introduce hydrophilic groups and the remaining isocyanate groups are blocked with a blocking agent which regenerates isocyanate groups by heating treatment.

    摘要翻译： 本发明提供了一种无氯化合物的防缩剂，仅通过在干燥步骤中加热而充分树脂化，并且还具有优异的耐收缩性能和优异的耐洗涤性，并且可以保持角蛋白的质地特性 纤维。 本发明使用含有水溶性热反应性氨基甲酸酯预聚物的防缩剂，其中一部分异氰酸酯基团与活性氢化合物反应以引入亲水基团，并且剩余的异氰酸酯基团用再生异氰酸酯基团的封闭剂封闭 通过加热处理。