Hydroxyesters of resin acids modified with o-cresol/p-nonylphenol/formaldehyde
resins (in English)
Hydroxyesters of resin acids (ERA) were obtained by the esterification of resin acids (RA) with diglycidyl resins, such as diglycidyl ether of bisphenol A (DGEBA), diglycidyl ether of hydroquinone (DGEHQ) or diglycidyl aniline (DGAN), in the presence of triethylbenzylammonium chloride as a catalyst. The preparations of heat reactive o-cresol (o-Cz)/p-nonylphenol (p-NP)/formaldehyde resins (FR) by basic catalyzed polycondensation at various molar ratios of o-Cz, p-NP and p-formaldehyde (p-FA) were carried out. ERA were reacted with obtained heat reactive FR giving hydroxyesters of resin acids modified with formaldehyde resins (ERAFR). The chemical structures of all the products were determined by FT-IR, 1H NMR, 13C NMR spectroscopy and elemental analysis. ERAFR exhibit properties that make them useful in formulations of vehicles for gravure or printing inks.
Key words: hydroxyesters of resin acids, diglycidyl resin, phenol-formaldehyde resins, modification, printing inks vehicles
Hydroxyesters of resin acids modified with o-cresol/p-nonylphenol/formaldehyde resins (in English)