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    • 9. 发明申请
    • Water-Soluble Preflux and Usage of the Same
    • 水溶性预流量及其用途
    • US20080318070A1
    • 2008-12-25
    • US11914138
    • 2006-05-23
    • Hirohiko HiraoYoshimasa KikukawaTakayuki Murai
    • Hirohiko HiraoYoshimasa KikukawaTakayuki Murai
    • B32B15/04B23K35/22B23K1/20
    • B23K35/362B23K35/3613C23F11/149H05K3/282H05K2203/0786Y10T428/31678
    • It is an object to provide a water-soluble preflux containing a low-volatile solubilizing agent excellent in performance to dissolve an imidazole compound in water and capable of bringing out an excellent film-forming property of the imidazole compound and also to provide a treating method for the surface of a metal conductive part which comprises bringing the surface into contact with the above water-soluble preflux.Another object is to provide a printed wiring board wherein the surface of a metal conductive part has been brought into contact with the above water-soluble preflux and a soldering method which comprises bringing the surface of a metal conductive part into contact with the above water-soluble preflux and subsequently soldering the surface.A water-soluble preflux comprising an imidazole compound and a carboxylic acid compound having 4 to 16 carbon atoms represented by the following general formula 1: wherein R1 represents a linear or branched alkyl group having 1 to 4 carbon atoms, R2 represents a hydrogen atom or a methyl group, m represents an integer of 0 to 3, and n represents 1 or 2.
    • 本发明的目的是提供一种水溶性前驱物,其含有将咪唑化合物溶解在水中的性能优异的低挥发性增溶剂,能够提供咪唑化合物的优异的成膜性,还提供了一种处理方法 用于金属导电部件的表面,其包括使表面与上述水溶性前流体接触。 另一个目的是提供一种印刷电路板,其中金属导电部件的表面已经与上述水溶性前流体接触,并且包括使金属导电部件的表面与上述水溶性前流体接触的焊接方法, 可溶性前流体并随后焊接表面。 一种包含咪唑化合物和由以下通式1表示的具有4至16个碳原子的羧酸化合物的水溶性前通路:其中R 1表示具有1至4个碳原子的直链或支链烷基,R 2表示氢原子或 甲基,m表示0〜3的整数,n表示1或2。