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S. A. Kurta, S. V. Fedorchenko, M. V. Chaber

Investigation of the stability of the modified urea-formaldehyde resin (in English)

Polimery 2004, No 1, 49


Summary

Commercial KFMT-15 type urea-formaldehyde resin (UF) was modified with an addition of 4 wt. % of various alcohols (methanol, ethanol, isopropanol, butanol). Changes of pH, relative viscosity, hot gelation time and free formaldehyde content during storage (up to 4 months) were investigated. Chemical interpretation of the results obtained has been proposed. It was found that isopropanol is the most advantageous modifier - from the point of view of UF useful properties (especially emission of formaldehyde).


Keywords: urea-formaldehyde resins, modification, aliphatic alcohols, storage stability


S. A. Kurta, S. V. Fedorchenko, M. V. Chaber

Investigation of the stability of the modified urea-formaldehyde resin (in English)