Phosphoroamidates

Abstract

Compounds of the formulas ##STR1## WHEREIN: X represents oxygen or sulfur; Z represents the residue of a hydroxyl-containing moiety; R.sub.1 and R.sub.2 in formula (1) may be the same or different and individually represent alkyl, cycloalkyl or aryl and, together with the common nitrogen atom, represent a 5 or 6-member ring containing oxygen, sulfur or nitrogen or combination thereof; Nr.sub.1 r.sub.2 in formula (2) represent a 5 or 6-member ring containing oxygen, sulfur or nitrogen or combination thereof; n represents an integer having a value of 2 or greater and is equal to the number of hydroxyl groups on the original hydroxyl-containing moiety; Are prepared by reacting a phosphorohalidate with an amine in an organic solvent containing aqueous alkali metal or ammonium hydroxide. The compounds are useful as flame retardants for natural and synthetic materials.

Dependencies are inferred from the claim text.