abstract |
(57) Abstract: A method for suppressing the polymerization of vinyl aromatic and vinyl aliphatic compounds under elevated temperature and exclusion of air. As a suppressor, 4-hydroxy-2, 2,6,6-Tetramethylpiperidine-N-oxyl or 4-acetylamino-2,2,6,6-tetramethylpiperidine-N-oxyl alone or in p-nitrosophenol or 2-methyl-4 -Use as a mixture with nitrosophenol. |