C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
6/42
C08G 6/00 (2006.01) B22C 1/22 (2006.01) B22C 9/02 (2006.01) C04B 26/12 (2006.01) C08G 8/04 (2006.01) C08K 3/34 (2006.01) C08L 61/02 (2006.01)
Patent
CA 1280255
TITLE A METHOD OF MANUFACTURING A FOUNDRY MOULD, OR A COMPONENT THEREOF INVENTOR ERVIN I. SZAB? ABSTRACT OF THE DISCLOSURE A method of manufacturing an easily separable from cast-metal, foundry mould, or a component thereof, comprises, preparing a foundry mould mix by mixing a binder with sand in the range 20 to 50 L of the binder per M3 of the foundry sand, the binder consisting of an aqueous solution of glyoxal containing 20 to 40% glyoxal and at least one metal oxide condensing/ polymerizing enhancing agent (e.g. magnesium oxide, calcium oxide and zinc oxide) for the glyoxal, and then shaping a mould from the mix. Preferably at least one metal halide (e.g. zinc chloride, magnesium chloride, calcium chloride, manganese chloride and iron chloride) is included, preferably in the amount of about 1.0% of the aqueous solution of glyoxal to saturation, as a glyoxal condensation reaction augmenting additive. The glyoxal condensation reaction augmenting additive may also be ferric oxide, manganese dioxide or red lead or mixtures thereof.
523265
Her Majesty In Right Of Canada As Represented By The Minister Of Mines And Resources
Swabey Ogilvy Renault
Szabo Ervin I.
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