Aluminum salts of phosphinic acid or diphosphinic acids having alkyl and/or aryl substitutes, obtainable by heating an ester of the corresponding phosphinic acids or diphosphinic acids with aluminum hydroxide at a temperature of more than 150° C. under pressure in the presence of water, are distinguished by a particular crystal structure and are suitable as flameproofing agents for plastics.
具有烷基和/或芳基取代基的
膦酸或
二膦酸的铝盐,可通过在
水的存在下,将相应的
膦酸或
二膦酸的酯与氢氧化铝在 150°C 以上的温度和压力下加热而获得,具有特殊的晶体结构,可用作塑料的阻燃剂。