Abstract
This chapter discusses furan resins that are condensation products of furfuryl alcohol (FA). The resins are derived from vegetable cellulose, a renewable resource. One of the chief advantages of furan resins stems from the fact that they are derived from vegetable cellulose. Polyimides based on the furan resin exhibit good thermal stability. Materials known to be suitable for curing furan resins include inorganic and organic acids. Acidic curing, oxidative curing, and ultrasonic curing are the three types used for furfuryl alcohol. Furan resins are used mainly in the foundry industry, as sand binders for casting molds and cores. They are often used in combination with other resins.
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