| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a urethane composition for a cleaning blade excellent in curability, wear and chipping resistances. SOLUTION: The urethane composition for a cleaning blade comprises the following components (A)-(D) as essential components and has an NCO index of >=115; (A) a polyol, (B) a polyisocyanate, (C) an organic acid and (D) a catalyst comprising at least one of 1,8-diazabicyclo (5,4,0)-undecene-7 and 1,5- diazabicyclo(4,3,0)-nonene-5.</p> |
