Oil and gas production handbook An introduction to oil and gas production

Urea-formaldehyde is a non-transparent thermosetting resin or plastic, 
made from urea and formaldehyde. It is used in adhesives, finishes, MDF 
and molded objects. Its attributes include high tensile strength, heat 
distortion temperature, low water absorption, mold shrinkage, high surface 
hardness and elongation at break. 
 
Phenol formaldehyde is a low-cost basic resin. Addition of appropriate 
fillers can generate high temperature-resistant grades (185 °C/370 °F). 
Normal phenolics are resistant to 150 °C/300 °F. Applications include 
moldings, bottle tops, resins, chemically resistant coatings for metals, 
laminates, water lubricated bearings and foams for thermal insulation.