| 摘要 |
PURPOSE:To obtain the titled polymerization inhibitor which can prevent a cyclic (meth)acrylamide from undergoing polymerization even at high temperature, by using a compound selected from among a specified catechol, a specified cresol and a specified anisole as a component. CONSTITUTION:The titled polymerization inhibitor (B) (e.g., p-t-butylcatechol) is obtained by using at least one compound selected from among a catechol, a cresol and an anisole each of which contains at least one hydroxyl group and a t-butyl group in the aromatic ring. 0.01-2.0wt%, preferably, 0.05-1.0wt%, based on component A, component B is added to cyclic (meth)acrylamide (A) of formula I (wherein R is H or CH3, A is formula II or III and n is 4-6). |
