Amine cured foundry binder systems and their uses

Details Amine cured foundry binder systems and their uses Amine cured foundry binder systems and their uses

B - Operations, Transporting

22

C

B22C 9/02 (2006.01) B22C 1/22 (2006.01) B22D 15/00 (2006.01)

Patent

CA 2282766

The subject invention relate to a foundry binder system which cures in the presence of a volatile amine curing catalyst comprising (a) an epoxy resin, (b) an organic polyisocyanate, (c) a reactive unsaturated acrylic monomer or polymer, and (d) an oxidizing agent. The foundry binders are used for making foundry mixes. The foundry mixes are used to make foundry shapes which arc used to make metal castings.

La présente invention se rapporte à un système de liants de fonderie qui durcit en présence d'un catalyseur de durcissement contenant une amine volatile. Ledit catalyseur comporte (a) une résine époxy, (b) un polyisocyanate organique, (c) un monomère ou polymère acrylique, insaturé et réactif, et (d) un agent d'oxydation. Ces liants de fonderie sont utilisés pour la fabrication de mélanges pour fonderie, eux-mêmes utilisés pour la fabrication de moules de fonderie servant à produire des pièces métalliques moulées.

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