| 摘要 |
PURPOSE:To prevent corrosion of solder powder and oxidation of base metals and to improve soldering workability by mixing 1 or 2 kinds of polybutene and polyisobutyrene and org. gelling agent respectively at prescribed % with specific weight % of n-hexane. CONSTITUTION:The binder for paste solder is obtd. by mixing 30-80% 1 or 2 kinds of polybutene and polyisobutyrene with 20-70% n-hexane, and further, adding 0.25-3% org. gelling agent thereto, then agitating and heating the mixture. The corrosion of the solder during storage is prevented by the gelation of the binder and the oxidation of the base metals when the solder is coated thereon are prevented if the paste solder is prepd. by adequately mixing and agitating this binder and the solder powder. Further, the splashing of the binder during soldering is obviated by the viscosity adjustment of the binder and the generation of residue is obviated as well. The soldering workability is, therefore, improved.
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