Electrically-conductive material

Abstract

Abstract PURPOSE:The titled material having improved molding properties and electrical conductivity, softening at low temperature, obtained by reacting a specific polyoxyalkylene glycol with a polyfunctional carboxylic acid or its anhydride, or its lower alkyl ester to give a specified high-molecular-weight compound, blending this compound with an electrically-conductive filler. CONSTITUTION:A polyoxyalkylene glycol having >=8,000 average molecular weight and >=70wt% ethylene oxide unit content and a polyfunctional carboxylic acid (e.g., malonic acid, succinic acid), its anhydride or its lower alkyl ester (e.g., monomethyl ester, etc.) are blended in equivalent amounts calculated as functional group ratio in esterification or ester exchange reaction, and the blend is reacted at 120-250 deg.C at 10<-4>-10Torr to give a high-molecular-weight compound having >=50,000 average molecular weight, and 100pts.wt. high-molecular- weight compound is blended with 10-200pts.wt. electrically-conductive filler (gold, silver, nickel, etc.).

Inventors

• 👤 Shigeo Mori
• 👤 茂男 森
• 👤 Takeshi Fujita
• 👤 武志 藤田
• 👤 Chuzo Isoda
• 👤 磯田　忠三
• 👤 Satoshi Tejima
• 👤 手島　智

Bibliographic Details