| 摘要 |
<p>The purpose of the present invention is to provide a polyurethane resin composition having excellent thermal durability under a cooling/heating cycle. The present invention relates to a polyurethane resin composition comprising a hydroxyl-group-containing compound, an isocyanate-group-containing compound and an inorganic filler (D), wherein the hydroxyl-group-containing compound comprises a polybutadiene polyol (A), the isocyanate-group-containing compound comprises an isocyanurate-modified product (B) of a polyisocyanate compound and an allophanate-modified product (C) of a polyisocyanate compound, the inorganic filler (D) comprises at least one compound selected from the group consisting of alumina, aluminum hydroxide, aluminum nitride, boron nitride, magnesium hydroxide and magnesium oxide, and the amount of the inorganic filler (D) added is 50 to 95% by mass relative to the amount of the polyurethane resin composition.</p> |
