| abstract |
The subject invention relates to no-bake molding mixes comprising (a) an aggregate, particularly a briquetting aggregate; (b) an aqueous basic solution of an alkaline phenolic resole resin; (c) a liquid co-reactant composition comprising (1) a liquid ester curing catalyst, and (2) a tar selected from the group consisting of resorcinol pitch, bisphenol A tar, and mixtures thereof. |