| abstract |
In a method for suppressing premature polymerization of an ethylenically unsaturated monomer, an effective amount of A) at least one nitroxyl compound, and B) at least one quinone alkaide compound having an electron-withdrawing group at the 7-position, Disclosed herein is a method for inhibiting as described above comprising the step of adding Additionally, disclosed are compositions containing A) at least one nitroxyl compound and B) at least one quinone alkaide compound having an electron withdrawing group at the 7-position. |