potassium methylparaben, Potassium methacrylate, potassium 2-methyl-2-propenoate, 2-methyl-acrylic acid potassium, potassium salt of methacrylic acid, Kaliummethacrylat, potassium salt of methyl 4-hydroxybenzoate, potassium methyl 4-oxidobenzoate, potassium 2-methylprop-2-enoate, Potasium methacrylate, potassium methacrylic acid