Ester cured no-bake foundry binder system

Details Ester cured no-bake foundry binder system Ester cured no-bake foundry binder system

C - Chemistry, Metallurgy

08

L

C08L 61/10 (2006.01) B22C 1/22 (2006.01) C08K 3/36 (2006.01) C08L 61/06 (2006.01) C08L 63/00 (2006.01) C08L 63/02 (2006.01)

Patent

CA 2149115

2149115 9411132 PCTABS00032 The invention relates to an ester cured no-bake foundry binder system preferably comprising as separate components (a) an aqueous basic solution of a phenolic resole resin; (b) a hardener comprising (i) an epoxy resin, and (ii) a liquid ester. Alternatively, the epoxy resin can be used as a separate component. The foundry binders systems produce foundry shapes with improved tensile strengths when compared to foundry shapes which are prepared from foundry binder systems which do not contain an epoxy resin.

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