| 摘要 |
PROBLEM TO BE SOLVED: To provide a thermosetting type composition for flame retardant polyurethane resin containing polyol, polyisocyanate, and a phosphorus-based flame retardant and capable of forming a flame retardant polyurethane resin exhibiting thin flame retardancy of VTM-2, VTM-1, or VTM-0 in UL94-VTM test and excellent in shock resistance and deflection resistance.SOLUTION: There is provided a thermosetting type composition for flame retardant polyurethane resin containing polyol (A), polyisocyanate (B), a phosphazene compound (C), and firing type polytetrafluoroethylene particle (D), and an urethanization catalyst (E) if needed. There is also provided a thermosetting type composition for flame retardant polyurethane resin where the (A) component contains amino group-containing polyol (a1), phosphorus-containing diol (a2), and other polyol (a3). |
