Stabilization of polyether polyamino methylene phosphate...

Details Stabilization of polyether polyamino methylene phosphate... Stabilization of polyether polyamino methylene phosphate...

C - Chemistry, Metallurgy

09

K

C09K 15/28 (2006.01) C02F 5/12 (2006.01) C02F 5/14 (2006.01) C23F 14/02 (2006.01)

Patent

CA 2095395

2884H C-1561 TITLE OF THE INVENTION STABILIZATION OF POLYETHER PALOMINO METHYLENE PHOSPHONATE SCALE INHIBITORS AGAINST DEGRADATION BY BROMINE AND CHLORINE BIOCIDES ABSTRACT OF THE DISCLOSURE Polyether polyamino methylene phosphonates, which possess high calcium tolerance and have been found to give excellent inhibition of the formation, deposition and adherence of scale-forming salts, especially calcium carbonate, in aqueous systems involving severe conditions which include elevated pH, high dissolved solids content, and high saturation levels of calcium carbonate, are degraded by the oxidizing biocides bromine and chlorine used to control microbial growth in such aqueous systems. It has been found that organic sulfonamides provide excellent protection against such degradation when they are added to the aqueous system along with the polyether polyamino methylene phosphonate scale inhibitors.

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