Foundry mixes containing a polyether polyol and their use

Details Foundry mixes containing a polyether polyol and their use Foundry mixes containing a polyether polyol and their use

B - Operations, Transporting

22

C

B22C 1/22 (2006.01) B22C 9/02 (2006.01) C08G 18/20 (2006.01) C08G 18/48 (2006.01) C08G 18/80 (2006.01)

Patent

CA 2142830

This invention relates to foundry mixes which comprise a dry: foundry aggregate and a polyurethane-forming foundry binder. The binder components include a polyether polyol component and an organic polyisocyanate component which is cured with a liquid tertiary amine catalyst. The foundry mixes are used to prepare foundry shapes made from foundry mixes by a no-bake process. The resulting foundry shapes are used to cast metal parts from ferrous and non ferrous metals.

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