FLAME RETARDANT POLYMERIC COMPOSITIONS CONTAINING PENTAERYTHRITOL CYCLIC DIPHOSPHATES AND DIPHOSPHORAMIDATES

摘要

Polymeric compositions comprising a polymer and a flame retarding amount of a compound of the formula where X and X1 are each oxygen or sulfur and Y and Y1 are each monovalent halogenated oxyaliphatic or oxyalicyclic or where R and R1 are each hydrogen, monovalent hydrocarbon or halogenated monovalent hydrocarbon, are disclosed. Also disclosed is a process for rendering polymers flame retardant comprising combining said polymers with a flame-retarding amount of one or more of the compounds described above.