Patent ID: 7125914
Filing Date: 2006-10-24
Classification: B22C

Abstract:
1. A heat-cured furan binder system comprising: (a) from 5 to 50 parts by weight of a furan resin; (b) from 5 to 50 parts by weight of furfuryl alcohol; (c) from 1 to 50 parts by weight of a dimethyolated furan selected from the group consisting of dimethylolated furan monomers, dimethyolated furan oligomers, and mixtures thereof, d) from 1 to 10 parts by weight of polyvinyl acetate; and e) from 1 to 10 parts by weight of an activator selected from the group consisting of resorcinol pitch, bisphenol A tar, and mixtures thereof, wherein said parts by weight are based upon 100 parts of binder resin.