4-Aminophenoxy cyclotriphosphazenes are reacted with maleic anhydride to produce maleamic acids which are converted to the maleimides. The maleimides are polymerized. By selection of starting materials (e.g. hexakis amino or trisaminophenoxy-trisphenoxy-cyclotriphosphazenes), selection of molar proportions of reactants, use of mixtures of anhydrides and use of dianhydrides as bridging groups a variety of maleimides and polymers are produced. The polymers have high limiting oxygen indices, high char yields and other useful heat and fire resistant properties making them useful as, for example, impregnants of fabrics.
4-
氨基苯氧基环三
磷氮化物与
马来酸酐反应生成马来酰胺酸,然后转化为马来
酰亚胺。马来
酰亚胺进行聚合反应。通过选择起始物质(例如
六胺或三
氨基苯氧基三苯氧基环三
磷氮化物)、选择摩尔比例的反应物、使用酸酐混合物和使用二酸酐作为桥连基团,可以生产各种马来
酰亚胺和聚合物。这些聚合物具有高限氧指数、高
炭化收率和其他有用的耐热和防火性能,因此可以用作织物的浸渍剂等。