Patent ID: 6524697
Filing Date: 2003-02-25
Classification: G01K,Y10T

Abstract:
A temperature sensor comprising a temperature sensitive layer, said temperature sensitive layer being obtained by suspending an electrically conductive powder in a mixture of a hardening agent and a resin, said resin obtained by copolymerizing i) a first monomer selected from the group consisting of tetrahydrofurfuryl acrylate and tetrahydrofurfuryl methacrylate, ii) a second hydrophobic monomer, and iii) a third monomer having a glycidyl group selected from the group consisting of glycidyl acrylate and glycidyl methacrylate, wherein said temperature sensitive layer has a glass transition temperature of about 100Â° C. to about 150Â° C. and a coefficient of expansion at or above the glass transition temperature, the coefficient of expansion at or above the glass transition temperature being at least twice the coefficient of expansion at room temperature.