SOFT POLYURETHANE FOAM, METHOD FOR PRODUCING THE SAME, ELECTRO-CONDUCTIVE ROLLER USING THE SAME AND ELECTROPHOTOGRAPHIC DEVICE USING THE ELECTRO-CONDUCTIVE ROLLER

摘要

PROBLEM TO BE SOLVED: To obtain an electro-conductive polyurethane foam having a steady electric resistance not affected by surrounding environment, and to provide its production method and its use.;SOLUTION: This soft polyurethane foam is obtained by reacting an isocyanate compound with a polyol under the condition that a compound salt solution comprising an equivalent mixture composed of either combination of ammonium thiocyanate and ferrous chloride, sodium thiocyanate and ferrous chloride, potassium thiocyanate and ferrous chloride, ammonium formate and ferrous chloride, ammonium formate and ferric chloride, ammonium thiocyanate and ferrous bromide, sodium thiocyanate and ferrous bromide, potassium thiocyanate and ferrous bromide, and ammonium formate and ferrous bromide is added in a specified amount or more to the polyol. Using the soft polyurethane foam, an electro-conductive roller for an electrophotographic device or the like can be made.;COPYRIGHT: (C)2002,JPO