The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 08, 2006
Filed:
Jul. 03, 2003
Massimo Paladini, Bergamo, IT;
Francesco Spini, Bergamo, IT;
Alessandro Scalvedi, Almé, IT;
Daniele Tarallo, Segrate, IT;
Jean Claude Valle, Bergamo, IT;
Massimo Paladini, Bergamo, IT;
Francesco Spini, Bergamo, IT;
Alessandro Scalvedi, Almé, IT;
Daniele Tarallo, Segrate, IT;
Jean Claude Valle, Bergamo, IT;
Giovanni Bozzetto S.p.A., Bergamo, IT;
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 R, R, and Rare each independently selected from the group consisting of CHPOM, CHR, wherein Ris CHOHCH, CHOHCHCl, or CHOHCHOH, (CH)SOM, wherein m is 3 or 4, and CHCHR, wherein Ris CONH, CHO, COOR, COOX, or CN, wherein Ris CHor CH, and wherein X is an alkali metal or ammonium, and wherein at least one of R, R, and Ris not CHPOM. 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.