| 摘要 |
PURPOSE:To obtain the titled composition exhibiting excellent moldability, adhesion, and crack resistance, by incorporating a urethane resin and a powdered inorganic filler into an unsaturated polyester resin. CONSTITUTION:5-60pts.wt. urethane resin made from a urethane prepolymer having terminal isocyanate groups and a polyol having terminal hydroxy groups, a powdered inorganic filler (e.g. silica), and if necessary, a crosslinker, an accelerator, etc. are incorporated into 100pts.wt. unsaturated polyester resin. USE:Cast sealing materials for electrical equipment. |
