Patent ID: 6646199
Filing Date: 2003-11-11
Classification: C08G,F16J,H01B,H05K,Y10S

Abstract:
A gasket or seal comprising an electrically conductive flexible polyurethane foam comprising a polyurethane and at least one conductive filler dispersed therein in an amount effective to provide EMI/RFI shielding, wherein the polyurethane comprises an isocyanate component to active hydrogen component in a ratio of at most about 0.15:1, wherein the foam a density of at most about 3 g/cm3, wherein the foam has a noise shielding effectiveness at about 20 to about 1000 MHz of at least about 10 dB and a compression deflection value at 50% compression of at most about 25 psi, and wherein the conductive filler concentration is about 140 phr to about 900 phr.