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Solubilization of nitrogen‐containing heterocyclic compounds in reactive solvents
Author(s) -
Kucharski Mieczysław,
GłowaczCzerwonka Dorota
Publication year - 2002
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.10439
Subject(s) - chemistry , solvent , carbazole , solubility , cyclohexanone , formaldehyde , polymer chemistry , melamine , organic chemistry , barbituric acid , curing (chemistry) , catalysis
A reactive solvent was obtained by reacting 1 mol of cyclohexanone with 5 mol of formaldehyde. The structure of the solvent was studied by using 1 H‐NMR and IR spectroscopy. It was used for solubilization of melamine and other heterocyclic compounds containing NH groups, such as adenine, carbazole, cytozine, guanine, thymine, and uracyl, as well as isocyanuric, barbituric, and uric acids. The solubilization involved the reaction of formaldehyde (liberated at an elevated temperature) with amino groups of the compound. Melamine was the compound with the best solubility in the reactive solvent. Preliminary attempts of curing the solutions have also been made. The oligomers cured at 120°C in the presence of acidic catalysts. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 84: 2650–2659, 2002