CORROSION INHIBITOR

摘要

A corrosion inhibitor for ferrous metals comprizing four different components of (a) an inorganic acid component (such as molybdate or tungstate), (b) an aliphatic hydroxycarboxylic or aliphatic dicarboxylic acid or its salt (such as citric acid, gluconic acid or succinic acid), (c) an inorganic heavy metal compound (such as zinc chloride or stannous chloride) and (d) a water soluble polymer component having a mlecular weight of 500 - 100,000 (such as acylic homo or copolymer), which is especially advantageous for use in water recycling system.