Imino alkylimino phosphonates and method for preparing and...

Details Imino alkylimino phosphonates and method for preparing and... Imino alkylimino phosphonates and method for preparing and...

C - Chemistry, Metallurgy

07

F

31/51, 260/501.5

C07F 9/38 (2006.01) C02F 5/14 (2006.01) C23F 11/16 (2006.01) C23F 11/167 (2006.01)

Patent

CA 1041115

ABSTRACT OF THE DISCLOSURE Imino ethylimino methyl phosphonates of the formula Image wherein R and M are hereinafter defined are prepared by reacting a phosphorus source (orthophosphorous acid or PCl3 and H2O), formaldehyde, and an amine of the formula R'N(CH2CH2NH2)2 wherein R' is hereinafter defined. The compounds are use- ful as sequestrants for metal ions, as precipitation or scale inhibitors and as corrosion inhibitors in aqueous media.

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