Methylene phosphonic acid scale inhibitor compositions...

Details Methylene phosphonic acid scale inhibitor compositions... Methylene phosphonic acid scale inhibitor compositions...

C - Chemistry, Metallurgy

02

F

134/39, 260/266.

C02F 5/14 (2006.01) C07F 9/6509 (2006.01) C07F 9/6558 (2006.01)

Patent

CA 1220782

4693-3469 ABSTRACT OF THE DISCLOSURE Certain methylene phosphonic acid derivatives of amino- hydrocarbyl piperazine-urea adducts are good threshold agents to prevent metal ion precipitation in aqueous solutions. The compounds having the formula Image wherein A is Image X is Image or H; R is H, ammonium, an alkali or alkaline earth metal; m is 0-2; n is 2 or 3; and wherein at least one X is Image . 31,855-F

460939

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