1,2-Benzenedicarboxylic acid, di-2-propenyl ester, polymer with ethyl 2-propenoate and 2-methyl-2-propenoic acid, ammonium salt 2-Propenoic acid, ethyl ester, polymer with 2-methyl-2-propenoic acid and 1,2-benzenedicarboxylic acid, di-2-propenyl ester, ammonium salt 67827-78-5