▎ 摘　　要

NOVELTY - Repairable hydrogel composition comprises aromatic substituent based acrylate compounds (I) or (II) and polyvinyl alcohol. USE - The repairable hydrogel composition is useful for adhesives and metal substrates (claimed). ADVANTAGE - The repairable hydrogel composition: has excellent bonding strength to metal substrates in practical use and can return to original state within a certain period of time after being stretched and deformed by external force. DETAILED DESCRIPTION - Repairable hydrogel composition comprises aromatic substituent based acrylate compounds of formulae (I) or (II) and polyvinyl alcohol. n and m = degree of polymerization; a = 1-3; and X = halide ion. An INDEPENDENT CLAIM is also included for preparing repairable hydrogel composition, comprising (i) preparing acrylate with side chain aromatic substituents, (ii) performing quaternization reaction of acrylate with side chain aromatic substituents to obtain acrylate salts, and (iii) copolymerizing obtained acrylate salts with sodium p-styrenesulfonate and polyvinyl alcohol to obtain (I) and (II).