Succinic anhydride-derived polyesters as corrosion inhibitors

A composition comprising a succinic anhydride-derived polyester compound to inhibit corrosion, the succinic anhydride-derived polyester compound comprising a polyamine and an alkyl or alkenyl succinic anhydride (ASA) and having the general formula I:

• wherein n is 0-20;
• and
• wherein R1, R2, R3, R4, and R5 are each individually selected from the group consisting of —H, a ring opened ASA, and a cyclic adduct with ASA, wherein at least one of R1, R2, R3, R4, and R5 is an ASA or cyclic adduct with ASA or combination thereof.