| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a conductive resin paste having a small amount of ionic impurities and improved in curability and workability by using a silver powder, a specified cyclosiloxane, a compound having a specified boiling point and containing an alkenyl group and a platinum catalyst as the essential components. SOLUTION: This conductive resin paste is prepared by premixing 60-90wt.% silver powder containing 10ppm or below of ionic impurities (e.g. sodium ions) with 1-20wt.% cyclosiloxane represented by the formula (wherein R1 to R3 are CH3 or phenyl; (m) is 2 or greater; (n) is an integer; and m+n=3-6) and containing 500ppm or below ionic impurities (e.g. chloride ions and sodium ions), 5-25wt.% compound having two or more alkenyl groups in the molecule and having a boiling point of 100 deg.C or above, 0.1-100ppm (in terms of the platinum atoms) of a platinum catalyst and optionally additives such as a flexibilizer, antifoamer and a coupling agent, kneading the obtained premix and deaerating the mixture in vacuo.</p> |
