Use of polyaminomethylenephosphonates as dispersing agents

摘要

A method of use of polyaminomethylenephosphonates as dispersing, wetting, and/or stabilizing agents in formulations for cements, detergents, ceramic materials, dyes, synthetic resins, rubbers, drilling fluids, and for reverse osmosis includes the step of adding a polyaminomethylenephosphonate having the formula: wherein n is an integer higher than 2, M is an alkaline metal or the ammonium ion, and R is: -CH2PO3M2; -CH2Z, wherein Z is -CH2OH, -CHOHCH3, -CHOHCH2Cl, or -CHOHCH2OH; -(CH2)mSO3M, m being 3 or 4; -CH2CH2T, wherein T is -CONH2, -CONH2, -CHO, -COOQ, -COOX, CN, wherein Q is -CH3 or -C2H5 and X is an alkaline metal ion or the ammonium ion; and wherein the polyaminomethylenephosphonate is present in a weight quantity of over 0.01% with respect to the total weight of the formulation.