摘要 |
PURPOSE:To obtain the title composition having excellent flame retardance and flame resistance, expandable by spray on-site, having high safety by using a modified benzylic ether type phenol resin as a polyol component. CONSTITUTION:(A) (i) A modified benzylic ether type phenol resin obtained by blending 100 pts.wt. benzylic ether type phenol resin with (ii) 20-100 pts.wt. polyhydric alcohol or an adduct thereof with an alkylene oxide and heating under reduced pressure and (B) other polyols are used as a polyol component so as to satisfy x+y/z=0.2-1.5 (x is amount of component ii used; y is amount of component B used; z is amount of component A used) and utilized with a polyisocyanate component, a urethanizing catalyst and a foam stabilizer to give the aimed flame-retardant composition expandable by spray. |