Urea Formaldehyde resins are thermosetting resins of the Amino Plastics family made by reacting urea with formaldehyde. Available in a wide range of colors, Urea Formaldehyde is used to manufacture items such as buttons, toilet seats and hair dryer housings but is most commonly used as an adhesive by the particle board, plywood and furniture industries.
See also Amino Plastics.
Source: J. A. Brydson, Plastics Materials, 4th ed., 601-617.