Tin plated film and tin plating bath for forming plated film
    21.
    发明专利
    Tin plated film and tin plating bath for forming plated film 审中-公开
    镀锌膜和镀锌膜形成薄膜

    公开(公告)号:JP2009209453A

    公开(公告)日:2009-09-17

    申请号:JP2009024105

    申请日:2009-02-04

    Abstract: PROBLEM TO BE SOLVED: To provide a tin plated film and a tin plating bath for forming plated film in which the generation of whisker is suppressed, the control of a tin plating bath is facilitated and the cost is reduced.
    SOLUTION: The tin plated film 26 covering a lead base material 22 contains nonionic high polymer fine particles 28. The high polymer fine particles 28 are deformed by the stress imparted to the tin plated film 26 to mitigate the stress. As a result, the generation of the whisker is suppressed and in an electronic component provided with an external lead covered with the tin plated film 26, the shortage caused by the whisker is prevented.
    COPYRIGHT: (C)2009,JPO&INPIT

    Abstract translation: 要解决的问题:为了提供镀锡膜和用于形成电镀膜的镀锡浴,其中抑制晶须的产生,便于镀锡浴的控制并降低成本。 解决方案:覆盖铅基材料22的镀锡膜26包含非离子高分子微粒28.高分子微粒28通过施加到镀锡膜26的应力而变形,以减轻应力。 结果,晶须的产生被抑制,并且在设置有被镀锡膜26覆盖的外部引线的电子部件中,防止了由晶须引起的短缺。 版权所有(C)2009,JPO&INPIT

    MODIFIED CELLULOSE AND ITS PRODUCTION METHOD

    公开(公告)号:JP2002293801A

    公开(公告)日:2002-10-09

    申请号:JP2001101753

    申请日:2001-03-30

    Abstract: PROBLEM TO BE SOLVED: To provide a (meth)acrylate cellulose and a graft polymer cellulose being the grafted product in which the graft copolymerization reaction of a polymerizable compound for a cellulose which had been difficult conventionally can be performed smoothly and economically and to provide a method for producing them. SOLUTION: The cellulose is subjected to alkali substitution with an alkali aqueous solution having 0.1-100 equivalents for its glucose ring unit and reacted with a (meth)acrylic halide in an organic solvent to convert to the (meth) acrylate cellulose. The polymerizable compound is subjected to the addition polymerization.

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