United States Patent Application: 20080161222
Serial No.: 597665
Series Code: 10
Applicant: GIOVANNI BOZZETTO S.P.A
Inventors: Paladini; Massimo; (Bergamo, IT); Spini; Francesco; (Bergamo, IT); Scalvedi; Alessandro; (Alme', IT); Bellotto; Maurizio; (Milano, IT); Valle; Jean Claude; (Bergamo, IT)
Title: Use of polyaminomethylenephosphonates as dispersing agents
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. --CH.sub.2PO.sub.3M.sub.2, 2. --CH.sub.2R.sup.1 with R.sup.1 selected from --CH.sub.2OH, --CHOHCH.sub.3, --CHOHCH.sub.2CL, --CHOHCH.sub.2OH, 3. --(CH.sub.2).sub.Mso.sub.3M, m being equal to 3 or 4, 4. --CH.sub.2CH.sub.2R.sup.2 with R.sup.2 equal to --CONH.sub.2, CONH.sub.2, --CHO, --COOR.sup.3, --COOX, CN, R.sup.3 being either --CH.sup.3 or --C.sub.2H.sub.5 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.