| 摘要 |
PROBLEM TO BE SOLVED: To provide a polyurethane resin composition which is excellent in moist heat resistance, flame retardancy, electrical insulation, and workability and provides a resin case in which chemical stress cracks hardly occur.SOLUTION: A polyurethane resin composition (X) contains a hydroxyl group-containing compound (A), an isocyanate group-containing compound, a metal hydroxide (C), and a plasticizer (D). The hydroxyl group-containing compound (A) contains a polybutadiene polyol (A1). The isocyanate group-containing compound contains an isocyanurate-modified product (B) of a polyisocyanate compound. The metal hydroxide (C) is one or more selected from the group consisting of aluminum hydroxide and magnesium hydroxide. The content of the plasticizer (D) is 1-30 pts.mass based on 100 pts.mass of the total of the hydroxyl group-containing compound (A) and the plasticizer (D).SELECTED DRAWING: Figure 1 |
