A process for making an elastomer for use in printing drive belts is disclosed wherein a mixture of approximately 2 equivalents of toluene diisocyanate consisting of about 88 wt.% of the 2,4 isomer and 12 wt.% of the 2,6 isomer is reacted with a polyether or polyester having difunctional primary hydroxyl groups to form a prepolymer. The prepolymer is then reacted with a diamine curing agent to form the elastomer.
本发明公开了一种用于制造印刷传动带的弹性体的工艺,其中由约 88 wt.% 的 2,4 异构体和 12 wt.% 的 2,6 异构体组成的约 2 个当量的
甲苯二异氰酸酯混合物与具有双官能团伯羟基的聚醚或聚酯反应形成预聚物。 然后预聚物与二胺固化剂反应形成弹性体。