Soldering flux and soldering paste
A flux and solder paste technology, applied in the direction of welding medium, welding equipment, welding/cutting medium/material, etc., can solve the problems of flux leakage, insufficient effect, and deterioration of voids, etc., to achieve stable printability and maintain Printability, effect of suppressing bridging
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[0077] An example is given below to describe the present invention in detail. In addition, the determination of each characteristic value in an Example was implemented based on the following criteria. In addition, the composition and compounding quantity of each flux and each solder paste are shown in Table 1. In addition, the units of the numerical values described in Table 1 are all weight %.
[0078]
[0079] A solution 1 obtained by mixing 40% by weight of a compound represented by the following general formula (1) and 60% by weight of a compound represented by the following general formula (2) was produced.
[0080] [chemical formula 1]
[0081]
[0082] [chemical formula 2]
[0083]
[0084] 200 g of diethylhexanediol was placed in a 500 ml 4-necked flask equipped with a stirrer, a reflux condenser, and a nitrogen gas introduction tube, and heated to 110°C. Thereafter, 0.2 to 5% by weight of an azo-based radical initiator (dimethyl 2,2'-azobis(2-methylpropi...
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