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5968910 
Journal Article 
Urea-formaldehyde (UF) adhesive resins for wood 
Dunky, M 
1998 
Yes 
International Journal of Adhesion and Adhesives
ISSN: 0143-7496 
18 
2 
95-107 
English 
WOS:000074641500005 
Urea–formaldehyde (UF) resins are the most important type of adhesive resins for the production of wood based panels. They convince by their high reactivity and good performance in the production and by their low price, however they lack in water resistance of the hardened resin owing to the reversibility of the aminomethylene link and hence the susceptibility to hydrolysis. This need can be overcome by introducing other components like melamine to the UF resin molecules. The former problem of subsequent formaldehyde emission can be considered as solved owing to the decrease of the content of formaldehyde in the resins during the last two decades. Modern laboratory test methods enable a deep insight into the chemical structure and the gelling and hardening behaviour of the resins. 
urea-formaldehyde resins; molar ratio; degree of condensation; gelling and hardening behavior; water resistance and hydrolysis; melamine