| 摘要 |
PURPOSE:To provide a corrosion inhibitor for preventing the corrosion of a substrate after soldering and a flux and a soldering paste containing this corrosion inhibitor by inactivating an activator contained in the flux and the solder paste without washing after soldering. CONSTITUTION:This corrosion inhibitor for the flux or the soldering paste contains particularily silicone resin and organic acid or organic acid salt as the activator. In the flux containing the silicone resin and the organic acid or the organic acid salt as the activator and the soldering paste containing the silicone resin and the organic acid or the organic acid salt as the activator and soldering particles, by reacting silanol group and/or methoxy group in the silicone resin with the organic acid or the organic acid salt as the activator at the time of soldering, the activator becomes the inactivator and the substrate can be prevented from the corrosion even without washing after soldering. As the silicone, pure silicone resin and modulated silicone resin are used. |
