The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 24, 2017
Filed:
Mar. 16, 2015
Sekisui Chemical Co., Ltd., Osaka, JP;
Hiroko Kobayashi, Shiga, JP;
Kenji Yamauchi, Shiga, JP;
Shintaro Moriguchi, Shiga, JP;
Jiro Miyai, Shiga, JP;
SEKISUI CHEMICAL CO., LTD., Osaka, JP;
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), Rand Reach independently representing a C0-C10 alkylene group, Xand Xeach independently representing a hydrogen atom, a metal atom, or a methyl group, in the formula (1-2), R, R, and Reach independently representing a hydrogen atom or a C1-C10 alkyl group, Rrepresenting a C0-C10 alkylene group, Xrepresenting a hydrogen atom, a metal atom, or a methyl group.