PURPOSE: To obtain the titled resin most suitable for refractory binders, by distilling phenol, etc. from a decomposition reaction product of cumene hydroperoxide, heat-treating the residual material, and cocondensing the resultant high-boiling resinous material with a phenol and an aldehyde.
CONSTITUTION: In preparing phenol by the cumene process, the resultant cumene hydroperoxide is decomposed with an acid to produce acetone, phenol and by- products, e.g. acetophenone and α-methylstyrene. The resultant decomposition product is then distilled to take out useful components, e.g. the phenol, acetone and α-methylstyrene, and the distillation residue is then heat-treated at 280°C or above for 30W60hr to give a high-boiling resinous material (2,000W30,000 molecular weight), which is then cocondensed with a phenol and an aldehyde, e.g. paraformaldehyde, in the presence of an acidic catalyst, e.g. hydrochloric acid, usually at 50W105°C for 1W15hr to afford the aimed thermosetting resin.
SUGAWARA HARUSHIGE
SHIMIZU YOSHIAKI
