Polyurethane-forming cold-box binders and their uses

Details Polyurethane-forming cold-box binders and their uses Polyurethane-forming cold-box binders and their uses

1996-04-10

1997-11-18

Clark, W. Robinson H.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524589, 523139, 523142, C08L 7504, B22C 122, B22C 902

Patent

active

056888570

ABSTRACT:
This invention relates to polyurethane-forming cold-box binders and foundry mixes prepared with these binders. The binder comprises a polyol component and an organic polyisocyanate component. Foundry mixes are prepared by mixing the binder with a foundry aggregate. Foundry shapes (molds and cores) are prepared by shaping the mix and curing the foundry shape with a gaseous tertiary amine curing catalyst.

REFERENCES:
patent: 4311631 (1982-01-01), Myers et al.
patent: 5132339 (1992-07-01), Carpenter et al.
patent: 5455287 (1995-10-01), Carpenter et al.

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