| abstract |
This invention provides a method for inhibiting polymerization during transportation, storage and/or production of (meth)acrylic acid or ester thereof includes adding an N-oxyl hydrocarbon compound and water to a vinyl compound; or dissolving an N-oxyl compound in water and adding the solution to a vinyl compound in a process of recovering, purifying, and/or synthesizing of the vinyl compound. The method can effectively inhibit polymerization of the vinyl compound. |