Process for the preparation of foundry cores and molds

Details Process for the preparation of foundry cores and molds Process for the preparation of foundry cores and molds

B - Operations, Transporting

22

C

400/7428

B22C 1/22 (2006.01) C08G 18/00 (2006.01) C08G 18/58 (2006.01) C08G 59/40 (2006.01)

Patent

CA 2024286

Mo3481 LeA 27,151 A PROCESS FOR THE PREPARATION OF FOUNDRY CORES AND MOLDS ABSTRACT OF THE DISCLOSURE This invention relates to a process for the preparation of foundry cores and molds by mixing a filler and a casting resin mixture and then curing the resultant mixture. The casting resin mixture is made from (a) 25 to 99.9% of at least one organic polyisocyanate, (b) 0.1 to 50% of at least one organic compound containing at least two epoxide groups, and (c) up to 50% of a polyhydroxyl compound, the quantities being based on the total quantity of resin.

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