Abstract: 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.

Abstract: Use of polyaminomethylenephosphonates as dispersing and/or wetting and/or stabilizing agents in formulations for cements, detergents, ceramic materials, dyes, synthetic resins, and rubbers, drilling fluids, reverse osmosis, as a substitution of or in combination with commercial products suitable for the purpose, characterized in that said polyaminomethylenephosphonates have the formula. (I) wherein n is integer higher than 2, M is hydrogen or a cation selected from those of alkaline metals and the ammonium ion, and the residues R, the same or different, are independently selected from 1. —CH2PO3M2, 2. —CH2R1 with R1 selected from —CH2OH, —CHOHCH3, —CHOHCH2CL, —CHOHCH2OH, 3. —(CH2)Mso3M, m being equal to 3 or 4, 4. —CH2CH2R2 with R2 equal to —CONH2, CONH2, —CHO, —COOR3, —COOX, CN, R3 being either —CH3 or —C2H5 and X a cation selected from the meanings of M and from the fact that said polyaminomethylenephosphonates are present in the formulation of interest in a weight quantity of over 0.

Abstract: In one embodiment, a scale inhibitor comprising at least one polymethylenephosphonate derivative having the following formula: wherein n is a number, wherein M is hydrogen or a cation, wherein R1, R2, and R3 are each independently selected from the group consisting of CH2PO3M2, CH2R4, wherein R4 is CHOHCH3, CHOHCH2Cl, or CHOHCH2OH, (CH2)mSO3M, wherein m is 3 or 4, and CH2CH2R5, wherein R5 is CONH2, CHO, COOR6, COOX, or CN, wherein R6 is CH3 or C2H5, and wherein X is an alkali metal or ammonium, and wherein at least one of R1, R2, and R3 is not CH2PO3M2. In another embodiment, a method for inhibiting scale formation in water, and in still another embodiment, a method for sequestering iron ions in a water systems, each of the methods comprising the step of providing the water with the above described polymethylenephosphonate derivative.