A compound of formula ##STR1## where R.sup.1 and R.sup.2 are independently a C.sub.1 -C.sub.10 aliphatic radical, or R.sup.1 is a C.sub.1 -C.sub.10 aliphatic radical and R.sup.2 is a C.sub.6 -C.sub.10 aromatic radical, and R.sup.3 is a C.sub.1 -C.sub.8 aliphatic radical, a C.sub.3 -C.sub.8 cycloaliphatic radical, a C.sub.6 -C.sub.15 aromatic radical or a C.sub.7 -C.sub.13 araliphatic radical, provided that R.sup.3 is not methyl when R.sup.1 and R.sup.2 are each methyl, that R.sup.3 is not ethyl when R.sup.1 and R.sup.2 are each methyl and that R.sup.2 is not p-aminophenyl when R.sup.1 is methyl and R.sup.3 is ethyl with an organic compound having at least one group reactive with a P--H bond.
一种化合物的
化学式为##STR1##其中R.sup.1和R.sup.2分别为C.sub.1-C.sub.10脂肪基,或R.sup.1为C.sub.1-C.sub.10脂肪基,而R.sup.2为C.sub.6-C.sub.10芳香基,R.sup.3为C.sub.1-C.sub.8脂肪基,C.sub.3-C.sub.8环状脂肪基,C.sub.6-C.sub.15芳香基或C.sub.7-C.sub.13芳基脂肪基,但当R.sup.1和R.sup.2分别为甲基时,R.sup.3不是甲基,当R.sup.1和R.sup.2分别为甲基且R.sup.3为乙基时,R.sup.3不是乙基,当R.sup.1为甲基且R.sup.3为乙基时,R.sup.2不是对
氨基苯基,该化合物至少含有一种与P-H键反应的基团。