USE OF POLYAMINOTHYLENEPHOSPHONATES AS DISPERSING AGENTS

摘要

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 ammoniumion, and the residues R, the same or different, are independently selected from 1. -CH2PO3M2, 2.- CH2R<1> with R<1> selected from -CH2OH, - CHOHCH3, - CHOHCH2CL, - CHOHCH2OH, 3. -(CH2)Mso3M, m being equal to 3 or 4, 4.- CH2CH2R<2> with R<2> equal to -CONH2, CONH2, -CHO, -COOR<3>, -COOX, CN, R<3> being either -CH<3> 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 0.01% with respect to the total weight of the formulation itself.