FLAME RETARDANT COMPOSITION AND FLAME-RETARDANT RESIN COMPOSITION

摘要

A flame retardant composition characterized by comprising a metal nitrilotris(methylene)phosphonate obtained by reacting nitrilotris(methylene)phosphonic acid and a salt thereof both represented by general formula (1) with a compound of a divalent metal, (wherein M<1> and M<2> each represents hydrogen or an alkali metal). The composition is reduced in fuming, emits no irritating odor, and can impart excellent flame retardancy to various resins without impairing the mechanical properties inherent therein.