申请人:Texaco Development Corporation
公开号:US04099004A1
公开(公告)日:1978-07-04
New catalysts for isocyanurate foams are those comprising aminomethacrylate salts. The foams are obtained by the polymerization of an aromatic polyisocyanate, and a polyether or polyester polyol in the presence of a blowing agent and said amino methacrylate salts falling within the following structural formula: ##STR1## where the radicals represented by R when taken singly are lower alkyl, and hydroxy lower alkyl, and when taken together with the adjacent nitrogen atom are selected from the group consisting of morpholino, C-substituted morpholino, N-alkylpiperazino and C-substituted N-alkylpiperazino, and M is selected from the group consisting of sodium, potassium, cesium, lithium and rubidium. The novel foams are useful in preparing rigid, flexible, semi-rigid, or semi-flexible materials such as panels, slabs or sprayed foam surfaces.
新的异氰酸酯泡沫的催化剂是包含氨基甲基丙烯酸盐的催化剂。这些泡沫是通过芳香族多异氰酸酯、聚醚或聚酯多元醇在吹膨剂和上述氨基甲基丙烯酸盐的存在下聚合而得到的,该氨基甲基丙烯酸盐符合以下结构式:##STR1## 其中R代表的基团在单独取时为较低的烷基和羟基较低的烷基,当与相邻的氮原子一起取时,从吗啉基、C-取代吗啉基、N-烷基哌嗪基和C-取代N-烷基哌嗪基组成的群中选择,M从钠、钾、铯、锂和铷组成的群中选择。这种新型泡沫在制备刚性、柔软、半刚性或半柔性材料(如面板、板材或喷涂泡沫表面)方面非常有用。