| 摘要 |
PROBLEM TO BE SOLVED: To obtain the subject resin excellent in (substained) electroconductivity and flexibility and useful for electron shielding agent, etc., under suppressing viscosity increase and controlling reaction velocity by using a specific polyether polyol compound premixed with an electroconductive material. SOLUTION: This electroconductive urethane resin is produced by reacting (A) a compound obtained by preblending (A1 ) a polyether polyol compound (preferably having 500-10000 molecular weight), having 2.0-4.0 average functional groups and containing 60-90wt.% of oxyethylene units based on the total polyol with (A2 ) an electroconductive material such as electroconductive carbon black, with (B) a polyisocyanate compound and, if needed, in the presence of (C) water as a foaming agent. The amount of the component A2 to be used is preferably 0.1-10%, especially 0.5-5% based on the sum of the components A1 and B from the stand point of electroconductivity and flowability of the component A. |
