Abstract
First two articles of H. Kämmerer on the polycondensation of cresoldialcohols (1952) and trimethylol-phenol (1960) are introduced. In these articles he examined the reproducibility of the “weight loss method” during heat hardening and found some characteristics of this method. Next the articles of H. S. Lilley, D. W. J. Osmond (1947) and H. F. Müller, I. Müller (1951) on the determination of methylol groups and benzyl ether linkages are introduced and at last the article of Lilley (1948) on “the use of monoreactive phenol alcohols as models for the general polymerization of phenol resin systems” are criticized from the stand point of the conclusion of the present paper that the heating temperature is most important for the “weight loss method”.
