Patent ID: 6573322
Filing Date: 2003-06-03
Classification: H01B,H05K

Abstract:
An electroconductive resin composition useful as a molded product having conductivity and produced by a process comprising the steps of:heating a molding composition comprising a synthetic thermoplastic resin, a zinc-based metal powder and a low melting metal to prepare a melting product in which the synthetic thermoplastic resin and the low melting metal are melted, injecting the melting product into a cavity of a die, cooling the die to solidify the melted synthetic thermoplastic resin and the melted low melting metal in which the zinc-based metal powder is dispersed and joined by the melted low melting metal; wherein said synthetic thermoplastic resin is a resin which melts at a molding temperature, and the content of said synthetic thermoplastic resin is 30 to 80 volume % per 100 volume % of the overall electroconductive resin composition, and said zinc-based metal powder is a metal zinc powder or a zinc alloy powder which does not melt at the molding temperature, and the content of said zinc-based metal powder is 10 to 60 volume % per 100 volume % of the overall electroconductive resin composition, and said low melting metal is tin or a tin alloy which melts at the molding temperature, and the content of said low melting metal is 3 to 30 volume % per 100 volume % of the overall electroconductive resin composition.