| 摘要 |
PURPOSE: A polymerization inhibitor is provided which is stabilized against premature polymerization and economical compared with a conventional polymerization. CONSTITUTION: A monomer composition, stabilized against premature polymerization comprises: a) an ethylenically unsaturated monomer or mixture of monomers polymerizable by free radical initiation, and b) an effective amount, sufficient to inhibit premature polymerization of component (a) of a mixture of: i) 1 to 99 % by weight, based on the total weight of components (i) and (ii) of a mixture of at least one aromatic amine of formula 1 and at least one organic acid in a molar ratio of 10: 1 to 1: 10, and ii) 99 to 1 % by weight based on the total weight of components (i) and (ii) of at least one stable radical compound which is a sterically hindered nitroxyl.
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