Abstract
For comments on the quinone methide theory that quinone methides act as reactive intermediates in the heat-hardening reactions of a resole, it may be unavoidable to understand the properties and the reactions of quinone methides. On account of this reason the present paper describes the following items concerned with quinone methides : chemical stability, synthetic methods, structures of cycloaddition products, structures of quinone methide dimers and some topics related to quinone methides.
