Invention Application
US20170037271A1 ELECTROCONDUCTIVE PASTE 有权
电焊膏

ELECTROCONDUCTIVE PASTE
Abstract:
The present invention provides a conductive paste that has excellent printability, that can provide a printed electrode with a smooth surface, and that is excellent in storage stability. The present invention relates to a conductive paste used for formation of an electrode of a multilayer ceramic capacitor, the conductive paste including: a polyvinyl acetal resin that contains a carboxylic acid-modified polyvinyl acetal resin; an organic solvent; and a conductive powder, the polyvinyl acetal resin having an average degree of polymerization of 200 to 800, an carboxyl group content of 0.05 to 1 mol %, a hydroxy group content of 16 to 24 mol %, an acetyl group content of 0.1 to 3 mol %, and an acetoacetal group content of not more than 25 mol %, the carboxylic acid-modified polyvinyl acetal resin having at least one of a structural unit that has a carboxyl group represented by the formula (1-1) and a structural unit that has a carboxyl group represented by the formula (1-2): in the formula (1-1), R1 and R2 each independently representing a C0-C10 alkylene group, X1 and X2 each independently representing a hydrogen atom, a metal atom, or a methyl group, in the formula (1-2), R3, R4, and R5 each independently representing a hydrogen atom or a C1-C10 alkyl group, R6 representing a C0-C10 alkylene group, X3 representing a hydrogen atom, a metal atom, or a methyl group.
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