| abstract |
(57) [Summary] [Object] An object of the present invention is to provide a method for easily and efficiently producing a polar vinyl compound having high purity and excellent polymerizability. According to the present invention, a crude polar vinyl compound containing a polymerization inhibitor and having at least one oxygen atom, nitrogen atom or sulfur atom is used at 500 to 30 at 0 to 100 ° C. Pressurize to 00 atm to precipitate vinyl compound crystals, By separating the crystals from the liquid phase under pressure, a highly pure polar vinyl compound having excellent polymerizability can be obtained. |