There is provided herein a process for the preparation of aluminum salts of phosphonic acid esters by reacting phosphonic acid diesters with aluminum hydroxide in the presence of a catalyst. The catalyst is selected from the group consisting of a phase transfer catalyst, a thermally stable tertiary amine having a boiling point higher than about 140°C, a thermally stable tertiary phosphine having a boiling point higher than 140°C and combinations thereof. The aluminum phosphonates prepared can be used for making flame retarded thermoplastic polymers.
本文提供了一种制备
磷酸酯铝盐的方法,通过在催化剂存在下将
磷酸二酯与氢氧化铝反应。催化剂选自相转移催化剂、热稳定的沸点高于约140°C的三级胺、热稳定的沸点高于140°C的三级膦和它们的组合。制备的铝
磷酸盐可用于制备阻燃热塑性聚合物。