SYNTHESYS AND PROPERTIES OF PHENOLPHORMALDEHIDE COPOLYMERS ON THE BASIS OF MIXTURES OF PHENOL AND PHTHALIMIDINECONTAINING BISPHENOL
New phenolformaldehyde resols and theircross-linked copolymers on the basis of mixtures of phenol and phthalimidinecontaining bisphenol have been described. Their physical-mechanical properties were determined