New resins aromatic and thermostable thermosetting polymers in arising

摘要

P describes novel thermosetting aromatic resins and their conversion into a temperature-stable polymers. The thermosetting resins consist of the fusible and soluble oligomers which are formed by the action of acetyl chloride and of the aluminum chloride in the métaterphényle. They are transformed into heat-stable polymers by heating at a temperature greater than about 100°C. in the presence of an acid catalyst. / p & & p & thermostable polymers, infusible and insoluble, can be obtained in the form of molded articles or of composite materials. They have a high coke content, after carbonization at high temperature. / p