| 摘要 |
<p>Imino ethylimino methyl phosphonates of the formula 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 useful as sequestrants for metal ions, as precipitation or scale inhibitors and as corrosion inhibitors in aqueous media.</p> |
