Electrical conductive adhesive

Abstract

Abstract PURPOSE:To obtain the title adhesive excellent in an ability of bonding in high-speed bonding, moisture-resistance reliability and hydrolysis resistance, by mixing a specified modified resin with a ureido silane coupling agent and an electrical conductive powder. CONSTITUTION:A modified resin (A) is obtained by reacting poly-p- hydroxystyrene (a) with an epoxy resin (b) (e.g., bisphenol diepoxide) in an amount approximately equivalent to component (a) by heating in the presence of, optionally, a catalyst. Component A is mixed with 100pts.wt. electrical conductive powder (B) (e.g., silver powder), 0.05-5pts.wt. ureido silane coupling agent (C) (e.g., gamma-ureidoethyltrimethoxysilane) and, optionally, additives such as an antifoamer.

Inventors

• 👤 Teru Okunoyama
• 👤 Yu Kubota

Bibliographic Details