PMR-, IR-, AND UV-SPECTROSCOPIC STUDIES OF PRODUCTS OF REACTION OF DICYANDIAMIDE WITH FORMALDEHYDE. METHYLOL AND METHYLENE ETHER DERIVATIVES.

Article abstract of DOI:10.1007/BF00660215

Amido- and amino-formaldehyde resins comprise an important class of polymers. The least investigated are the dicyandiamide-formaldehyde resins (DFR), whose use is promising for the preparation of hydrophobic, fireproof and other polymers. From the study of the spectra of DFR, certain conclusions can be made on their composition. Facts show that the polymerization of DFR proceeds mainly with the formation of methylene-ether bridges, and the methyl groups remain as the terminal groups. This is indicated by the high content of oxygen in the polymer - 26. 6% (determined in a CHN-3 analyzer).