Abstract
Continuously the final 15th paper of the H. v. Euler school on “the formation of phenol-formaladehyde resins” is abstracted. The most important point of the paper is the introduction of “quinone methids chemistry” into the resol-hardening reaction. But just at the same time K. Hultzsch reported independently on the completely same idea. On the other hand K. Fries and coworkers studied thoroughly “quinone methids” from the standpoint of organic chemistry. For the history of phenolic reins it is so important and interesting to study the works of those schools that the papers of Hultzsch and Fries are also abstracted in the present review.
