| 摘要 |
<p>Composition for inhibiting corrosion and scale deposition on metallic surfaces in contact with an aqueous system comprising:
(1) an effective amount of a water-soluble zinc compound adapted to liberate Zn<2><+> ions in solution,
(2) an effective amount of a water-soluble sulfonated styrene/maleic anhydride copolymer, the copolymer comprising sulfonated styrene moieties of the formula
<CHEM>
and moieties derived from maleic anhydride of the formula
<CHEM>
wherein M is H or a water-soluble cation, and
(3) an effective amount of a water-soluble organo-phosphorus acid compound or water-soluble salt thereof;
and a method of treating cooling water systems of the type prone to scale formation on, and corrosion of, metallic parts in contact with the cooling system comprising the step of adding to the cooling water system an effective amount of such a composition. </p> |
