Free radically cured cold-box binders containing an alkyl...

Details Free radically cured cold-box binders containing an alkyl... Free radically cured cold-box binders containing an alkyl...

C - Chemistry, Metallurgy

08

J

C08J 5/00 (2006.01) B22C 1/18 (2006.01) B22C 3/00 (2006.01)

Patent

CA 2437077

This invention relates to foundry binder systems, which will cure in the presence of sulfer dioxide and a free radical initiator, comprising (a) an epoxy resin; (b) an acrylate; (c) an alkyl silicate; and (d) an effective amount of a free radical initiator. 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 liants de fonderie, qui durcissent en présence de dioxyde de soufre et d'un initiateur de radicaux libres. Lesdits systèmes de liants comprennent : (a) une résine époxyde; (b) un acrylate; (c) un silicate d'alkyle; et (d) une quantité efficace d'un initiateur de radicaux libres. Lesdits systèmes de liants de fonderie sont utilisés pour la préparation de mélanges de fonderie. Lesdits mélanges de fonderie sont utilisés pour fabriquer des formes de fonderie (tels que des noyaux et des moules) qui sont utilisées pour fabriquer des pièces coulées métalliques, en particulier des pièces coulées ferreuses.

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