Abstract
First part I and II of F. S. Granger's series “Condensation of phenols with formaldehyde” are introduced. In part I o-cresoldialcohol and di-o-cresylmethanedialcohol are isolated for the first time andin part II the weight loss of o-and p-cresoldialcohols are estimated for the purpose of studying the hardening reaction. Next the article of F. Hanus (1940), who confirmed the constitutions of the dialcohols discovered by Granger, is mentioned. Hanus began also the study of the weight loss of phenolalcohols by analytical method, and claimed that only one mole H2O being separated out from the cresoldialcohols, while Granger thought that two mole H2O should be evoluted. Introducing the theory of W. Charlton and L. E. Perrins (1947) and reexamining the data of Hanus, the present author pointed out the future problem of the weight loss during the heat hardening reaction of phenoldialcohols.
