This invention relates to a method for producing aluminum phosphinates of the formula [R.sub.1 R.sub.2 P(O)O.sup.- ].sub.3 Al.sup.3 +, where R.sub.1 and R.sub.2 are the same or different and represent a C.sub.1-8 alkyl group or a phenyl group. The process involves reaction of the corresponding alkali metal phosphinate with aluminum sulfate. The aluminum phosphinate salts are useful as a flame retardant for plastics.
本发明涉及一种制备式为[R.sub.1 R.sub.2 P(O)O.sup.- ].sub.3 Al.sup.3 +的
磷酸铝盐的方法,其中R.sub.1和R.sub.2相同或不同,代表C.sub.1-8烷基或苯基。该过程涉及将相应的碱
金属
磷酸盐与
硫酸铝反应。铝
磷酸盐可用作塑料的阻燃剂。