| abstract |
Polymerization of epoxides and mixtures of epoxides with lactones and vinyl compounds, polymerizable through the action of cationic catalysts, is controlled by providing, in association with a radiation-sensitive catalyst precursor, a gelation inhibitor in the form of a cyclic amide, such as an N-substituted 2-pyridone, or a 2-pyrrolidinone monomer or polymer substituted in the 1-position. |