申请人:Pennwalt Corporation
公开号:US04293454A1
公开(公告)日:1981-10-06
A flame retardant composition is prepared by reacting chloral with a nitrogen compound having the formula: ##STR1## wherein: (a) X= ##STR2## or, --SO.sub.2 --; (b) Z is selected from O or S; (c) R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are selected from the group consisting of H, alkyl of 1 to 6 carbons, and substituted or unsubstituted hydroxyalkyl of 2 to 4 carbons and mixtures thereof in a temperature range of 25.degree. to 100.degree. C., in the absence of a solvent and in an apparatus that provides efficient mixing. These compositions are useful for preparing flame retardant polyurethane foams.
通过将氯醛与具有以下结构的氮化合物发生反应制备阻燃组合物:##STR1## 其中:(a) X= ##STR2## 或,--SO.sub.2 --;(b) Z 选择自O或S;(c) R.sub.1、R.sub.2、R.sub.3和R.sub.4 选择自H、1至6碳的烷基,以及2至4碳的取代或未取代的羟基烷基和它们的混合物,在25°C至100°C的温度范围内,在无溶剂的情况下,在提供有效混合的装置中。这些组合物可用于制备阻燃聚氨酯泡沫。