COMPOSIZIONE DI FOSFONATI PARTICOLARMENTE UTILE COME RITARDATORE DI FIAMMA PER MATERIE PLASTICHE E PROCEDIMENTO PER LA SUA PREPARAZIONE

摘要

Novel compositions comprising mixtures of hydrogenphosphonates and methylphosphonates are disclosed which are useful as flame retardants in organic resins. Also disclosed is a method of making these novel compositions by reacting a cyclic phosphite with methanol in the presence of a suitable acid catalyst.