Modified benzyl ether-containing resole polyols derived from a phenolic component, a non-aqueous aldehyde, and a halogen-containing aliphatic hydroxyl component are prepared using a metal derivative as a catalyst. These polyols react with organic polyisocyanates to yield closed cell, low friability, low combustibility, rigid polyurethane foams without the need for post curing at elevated temperature. They are also useful in the preparation of modified rigid polyisocyanurate foams.
使用一种
金属衍
生物作为催化剂,制备了由
酚类成分、非
水性醛和含卤脂肪羟基成分衍生的改性含苄基醚的羟基多元醇。这些多元醇可与有机多
异氰酸酯反应,生成闭孔、低易碎性、低可燃性的硬质聚
氨酯泡沫,而无需在高温下进行后固化。它们还可用于制备改性硬质聚
异氰酸酯泡沫。