Furan-phenolic oligomers

The reaction of furfural with phenol was studied both in acidic and alkaline media and when using catalysts of various nature. By the method of mixing, one can obtain solid oligomers as liquid polymers. To increase the heat resistance to the effects of aggressive media, DIFA (difurfurilidenene acetone) was used in the composition of furan-phenolic oligomers. The nature of the polymerization of all varieties of furan-phenolic oligomers is identical. The furan-phenolic oligomers are technologically advanced in the production process and have a high coke residue after polymerization and carbonization. Furano-phenolic oligomers are used in the production of foams and construction materials.