Method of making a foundry mould or core with an...

B - Operations – Transporting – 22 – C

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22/158, 400/7428

B22C 9/00 (2006.01) C09J 4/00 (2006.01)

Patent

CA 1050726

Abstract of the Disclosure ABSTRACT OF THE DISCLOSURE Solid particulate materials are bonded together to form a shaped article by (i) forming a mixture of the particles and an anserobically-curing adhesive and moulding the mixture to the desired shape, and (ii) causing the adhesive to cure and bond the particles together by maintaining the shaped article in a substantially oxygen-free environment. The anserobic adhesive may comprise, as monomer, an ester of an acrylic acid, with a hydroperoxide or peroxide as a polymerisation catalyst, and the oxygen-free environment may be produced by displacing air with nitrogen or other inert gas or vapor. The method described is particularly suited for the production of foundry moulds and cores from sand or other particulate material.

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