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Fire and heat resistant laminating resins based on maleimido substituted aromatic cyclotriphosphazene polymer
Fire and heat resistant laminating resins based on maleimido substituted aromatic cyclotriphosphazene polymer
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机译:基于马来酰亚胺基取代的芳族环三磷腈聚合物的防火和耐热层压树脂
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摘要
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 yeilds and other useful heat and fire resistant properties making them useful as, for example, impregnants of fabrics.
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