초록

A process for inhibiting the corrosion of metals in contact with aqueous systems is provided which process comprises adding to such systems an effective amount of a water treatment composition comprising a source of molybdate ion and a water-soluble polymer containing pendant amide functionality.

대표청구항 ▼

A water treatment composition for the inhibition of corrosion in metals in contact with aqueous systems consisting essentially of: a water-soluble source of molybdate ion; a water-soluble co- or terpolymer of from 25 to 95 mole percent (meth)acrylic acid and from 5 to 75 mole percent alkyl substitut

A water treatment composition for the inhibition of corrosion in metals in contact with aqueous systems consisting essentially of: a water-soluble source of molybdate ion; a water-soluble co- or terpolymer of from 25 to 95 mole percent (meth)acrylic acid and from 5 to 75 mole percent alkyl substituted acrylamide, said alkyl substituted acrylamide being an acrylamide unit substituted at the amide nitrogen with alkyl having from one to six carbons, and said water-soluble co- or terpolymer having a molecular weight of from 500 to 100,000; and at least one of an organic phosphonate, a source of orthophosphate ion, and an azole. The water treatment composition of claim 17 consisting essentially of said water-soluble source of molybdate ion, said water-soluble co- or terpolymer, and said source of orthophosphate ion.