The reaction between epoxy compounds and active hydrogen-containing compounds or anhydrides is catalyzed with a phosphine or phosphonium compound containing at least three C.sub.1 to C.sub.4 alkyl phenyl groups attached to the phosphorus atom per molecule.
环氧化合物和活性氢含有化合物或酸酐之间的反应是由含有至少三个连接到
磷原子的C.sub.1至C.sub.4烷基苯基基团的膦或膦鎵化合物催化的。