Patent ID: 8372916

Claim:
A process for making a phosphorus-containing composition comprising blending: (I) a phosphorus-containing compound comprising the reaction product of: (A) at least one organophosphorus compound having a group selected from the group H—P═O, the group P—H and the group P—OH; and (B) at least one compound having the following Formula (V): wherein R1 each independently is hydrogen or an alkyl group having from 1 to 10 carbon atoms; Y is a functional group selected from hydroxy, carboxylic acid, carboxylate, acid anhydride, and amine; X is a hydrocarbylene group; I. R″ is a hydrocarbyl group having from 1 to 8 carbon atoms; p each independently represents a number from 1 to 4; and a and b each independently represent a number greater than zero; and (II) a thermoplastic.