No-bake foundry mixes and their use

Details No-bake foundry mixes and their use No-bake foundry mixes and their use

1997-06-13

1999-01-12

McCarnish, Marion

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

Synthetic resins

Processes of preparing a desired or intentional composition...

523139, 523142, 524589, 524590, C08L 7508

Patent

active

058590919

ABSTRACT:
This invention relates to polyurethane-forming foundry binder systems and foundry mixes which comprise a foundry aggregate, said foundry binder system, and a liquid amine curing catalyst. The binder system comprises a polyol component containing a polyether polyol and a monomeric glycol, and an organic polyisocyanate component. The foundry mixes are used to prepare foundry shapes made from foundry mixes by a no-bake process.

REFERENCES:
patent: 4148777 (1979-04-01), LaBar et al.
patent: 4358570 (1982-11-01), Tobinaga
patent: 5132339 (1992-07-01), Carpenter et al.
patent: 5455287 (1995-10-01), Carpenter et al.
patent: 5688857 (1997-11-01), Chen et al.

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