Aqueous resin, aqueous coating material, and anti-corrosion coating layer

Abstract

An aqueous resin is provided. The aqueous resin is an ammonium salt formed by reacting an aromatic acid with an alkaline compound neutralized ring-opening intermediate compound. The ring-opening intermediate compound is formed by performing a ring-opening reaction of a copolymer (containing maleic anhydride) using a tertiary amino alcohol. The copolymer containing maleic anhydride has a chemical structure of wherein R1 is H or CH3, R2 is H, CH3, or C6H5, m:n=1:3 to 3:1, and n=4 to 20. The tertiary amino alcohol has a chemical structure of wherein R3 is C1-10 alkylene group, R4 is H, C1-10 alkyl group, or C6-12 aromatic group, and each of R5 and R6 is independently C1-10 alkyl group or C6-12 aromatic group. The aromatic acid has a chemical structure of wherein R7 is H, C1-10 alkyl group, or C6-12 aromatic group, and R8 is C1-5 alkylene group or

Dependencies are inferred from the claim text.