Patent ID: 7125475
Filing Date: 2006-10-24
Classification: B01D,Y10S

Abstract:
1. A process for inhibiting the premature polymerization of an ethylenically unsaturated monomer during production, distillation, purification or storage of the monomer, which comprises: incorporating in the monomer, in an effective inhibiting amount sufficient to prevent premature polymerization during production, distillation, purification or storage of said monomer, a blend comprising at least one C-nitrosoaniline compound and at least one nitrosophenol selected from the group consisting of 4-nitrosophenol, 2-nitrosophenol, 4-nitroso-o-cresol, 2-nitroso-p-cresol, 2-tert-butyl-4-nitrosophenol, 4-tert-butyl-2-nitrosophenol, 2,6-di-tert-butyl-4-nitrosophenol, 2-tert-amyl-4-nitrosophenol, 4-tert-amyl-2-nitrosophenol, 2,6-di-tert-amyl-4-nitrosophenol, 2-nitroso-1-naphthol, 4-nitroso-1-naphthol, 2-tert-butyl-4-nitroso-1-naphthol, 1-nitroso-2-naphthol, 6-nitroso-2-naphthol and 2-tert-amyl-nitroso-1-naphthol.