| abstract |
Compositions and methods for inhibiting polymerization of monomeric (eg, styrene) compositions using a quinone methide polymerization retarder and an oxygen-containing amine compound that is a tertiary amine or hydroxylamine are described. In the mixture, the oxygen-containing amine compound improves the efficacy of the quinone methide polymerization retarder and provides greater polymerization inhibitor activity. As a result, the mixture reduces or prevents device fouling and improves the purity of the monomer stream. |