Acrylate-free binders containing an epoxy resin and an alkyl...

Details Acrylate-free binders containing an epoxy resin and an alkyl... Acrylate-free binders containing an epoxy resin and an alkyl...

B - Operations, Transporting

22

C

B22C 3/00 (2006.01)

Patent

CA 2532046

This invention relates to foundry binder systems, which cure in the presence of sulfur dioxide and an oxidizing agent, comprising (a) an epoxy resin; (b) an alkyl silicate; (c) an ester of a fatty acid, (d) an effective amount of a oxidizing agent, and (e) no ethylenically unsaturated monomer or polymer. The foundry binder systems are used for making foundry mixes. The foundry mixes are used to make foundry shapes (such as cores and molds) which are used to make metal castings, particularly ferrous castings.

La présente invention concerne des systèmes de liant de fonderie, qui durcissent en présence de dioxyde de soufre et est d'un agent oxydant, qui comprenne (a) une résine époxy, (b) un silicate alkyle, (c) un ester d'acide gras, (d) une quantité efficace d'un agent oxydant et, (e) aucun monomère ou polymère éthylèniquement insaturé. ces systèmes de liant de fonderie sont utilisés pour fabriquer des mélanges de fonderie. Ces mélanges de fonderie sont utilisés pour fabriquer des formes de fonderie (tels que des noyaux et des moules), lesquelles sont utilisées pour fabriquer des coulages métalliques, en particulier des coulages ferreux.

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