Synthetic resins and their raw materials / A survey of the types and uses of synthetic resins, the organization of the industry, and the trade in resins and raw materials, with particular references to factors essential to tariff consideration. Under the general provisions of section 332, title III, part II, Tariff act of 1930.

by United States Tariff Commission

18. RAW MATERIALS FOR UREA RESINS

The principal raw materials entering into the manufacture of urea resins are urea and formaldehyde. Formaldehyde has already been discussed (see pp. [133-135]) and urea and thiourea are discussed below.