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

1994-03-07

1995-10-03

Michl, Paul R.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

523142, 524595, 528 76, 528 77, 528 85, B22C 122

Patent

active

054552877

ABSTRACT:
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.

REFERENCES:
patent: 4148777 (1979-04-01), LaBar et al.
patent: 4358570 (1982-11-01), Tobinaga
patent: 5132339 (1992-07-01), Carpenter et al.

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