FURAN RESIN COMPOSITION CAPABLE OF SECURING SAFETY HEALTH OF RESIDENTIAL AREA, A FURAN RESIN-HARDENER COMPOSITION, AND FOUNDRY SAND MOLDS THEREOF

摘要

PURPOSE: A furan resin composition, furan resin-hardener composition, and foundry sand molds thereof are provided to secure environment-friendliness and safety health of residential area and workplace since toxic materials such as the phenol and formaldehyde are not included.;CONSTITUTION: A furan resin composition includes a polycondensate of a mixture A or a polycondensate of a mixture B, and unreacted furfuryl alcohol. The mixture A consists of furfuryl alcohol and glyoxal. The mixture B consists of furfuryl alcohol, glyoxal, and urea. The mixture A includes 5-40 parts by weight of glyoxal based on 100 parts by weight of furfuryl alcohol. The unreacted furfuryl alcohol includes 30-90 parts by weight of the furan resin composition.;COPYRIGHT KIPO 2011