Process for the manufacture of a foundry core or mould

Details Process for the manufacture of a foundry core or mould Process for the manufacture of a foundry core or mould

B - Operations, Transporting

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B22C 1/02 (2006.01) B22C 1/20 (2006.01) C07C 407/00 (2006.01) C08K 5/11 (2006.01) C08K 5/14 (2006.01)

Patent

CA 1209319

PROCESS FOR THE MANUFACTURE OF A FOUNDRY CORE OR MOULD ABSTRACT OF THE DISCLOSURE There is disclosed an improved process for the manufacture of a foundry core or mould, comprising forming into the foundry core or mould a composition comprising a granular filler, a synthetic resin which cures under the action of an acid and a desensitized ketone peroxide composition and treating said formed composition with sulphur dioxide, wherein the improvement comprises using as the desensitizing agent a dialkyl ester of an aliphatic dicarboxylic acid of the general formula Image wherein n = 1-7 and R1 and R2 = a branched or non-branched alkyl group having 3 to 5 carbon atoms.

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