Water-soluble solder flux
    2.
    发明授权
    Water-soluble solder flux 失效
    水溶性助焊剂

    公开(公告)号:US5122201A

    公开(公告)日:1992-06-16

    申请号:US794542

    申请日:1991-11-19

    IPC分类号: B23K35/36

    CPC分类号: B23K35/3612

    摘要: The composition of the present invention includes a water-soluble soldering flux requiring no thermal energy to place the water-soluble flux in an active state. The water-soluble soldering flux contains (1) from about 1 percent to about 5 percent by weight, based on the weight of the water-soluble soldering flux, of an inorganic acid which, in solution, forms anions of the acid having a low propensity for forming metal complexes; (2) from about 30 percent to about 70 percent by weight, based on the total weight of the water-soluble soldering flux, of an anionic surfactant; and (3) from about 30 percent to about 70 percent by weight, based on the total weight of the water-soluble soldering flux, of a diluent. The composition of the present invention may contain a fourth component, a viscosity modifier from about 5 percent to about 40 percent by weight, based on total weight of the water-soluble soldering flux.