Polyurethane foam is disclosed having improved flame retardancy, charring, and intumescent properties. The foam is prepared from a reaction mixture comprising at least one isocyanate or diisocyanate, one blowing agent, one surfactant, one catalyst, and one reactive hydroxyl-terminated oligomeric liquid melamine derivative. The resulting foam provides substantial resistance to burning. A melamine-derived compound having at least alkyl or alkoxy groups, with hydroxy (—OH) termination(s) have proved to be particularly useful in connection with polyurethane foam.
所公开的聚
氨酯泡沫具有更好的阻燃性、
炭化性和膨胀性。该泡沫由一种反应混合物制备而成,该混合物至少包含一种
异氰酸酯或二
异氰酸酯、一种发泡剂、一种表面活性剂、一种催化剂和一种活性羟基封端低聚液态
三聚氰胺衍
生物。由此产生的泡沫具有很强的耐燃烧性。事实证明,至少具有烷基或烷氧基、羟基(-OH)末端的
三聚氰胺衍生化合物在聚
氨酯泡沫中特别有用。