Patent ID: 7723439

Claim:
A process for producing a polyfluoroalkyl (meth)acrylate, which comprises isolating, from a reaction mixture containing a polyfluoroalkyl (meth)acrylate obtained by reacting a polyfluoroalkyl iodide of the formula C n F 2n+1 (CH 2 ) m I (wherein n is an integer of from 2 to 7, and m is an integer of from 1 to 4) with a metal (meth)acrylate in tert-butanol, said polyfluoroalkyl (meth)acrylate by the following steps (1) to (3): (1) taking out a crude liquid from the reaction mixture by solid-liquid separation; (2) distilling the crude liquid in an atmosphere comprising oxygen gas to separate it into compound group A of compounds having a lower boiling point than the polyfluoroalkyl (meth)acrylate and compound group B of the polyfluoroalkyl (meth)acrylate and compounds having a higher boiling point than the polyfluoroalkyl (meth)acrylate; and (3) distilling and purifying the polyfluoroalkyl (meth)acrylate from the compound group B in the presence of a polymerization inhibitor, wherein said step (3) is carried out in an oxygen-containing atmosphere comprising oxygen gas, wherein the oxygen gas is present in the oxygen-containing gas in an amount of from 0.01 to 5%, based on the amount of vapor by volume calculated as in the standard state generated in a heating tank.