ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Conversion of technical mixtures of polyhydric phenols into resinous products. V. The condensation of diphene and pyrocatechol residues with formaldehyde in the presence of an acid catalyst and without a catalyst

J. Gašperík, K. Zvachová-Huppmanová, and J. Zvach

Slovak Technical University, Bratislava

Abstract: The isotherms of the condensation of diphene and pyrocatechol residues with HCHO with and without an acid catalyst were dotal. A method was described to det. the max. amt. of HCHO which is bound to the polyphenol component in the presence of alkali, an acid, and without a catalyst. In all types of condensation, the polyphenol components bind approx. the same amt. of HCHO (55.7-61.5%). Without catalyst, the condensation actually takes place with a trace of HCO₂H always present in tech. HCHO.

Full paper in Portable Document Format: 167a526.pdf (in Slovak)

Chemical Papers 16 (7) 526–531 (1962)