Binder for aggregate, foundry cores, and other products

Details Binder for aggregate, foundry cores, and other products Binder for aggregate, foundry cores, and other products

2005-07-19

2005-07-19

Brunsman, David (Department: 1755)

Compositions: coating or plastic

Coating or plastic compositions

Molds and mold coating compositions

C106S123110, C106S123120

Reexamination Certificate

active

06918956

ABSTRACT:
A foundry mold and the method of making it is disclosed and claimed. Black liquor is extracted from a pulping process and used as a resin which when combined with an aggregate forms a foundry mold, foundry core or a briquette. The black liquor can be combined with another material to accelerate the cure and to resist moisturization of the mold, core or briquette.

REFERENCES:
patent: 2549822 (1951-04-01), Euclid
patent: 3112206 (1963-11-01), Mocsny
patent: 4203771 (1980-05-01), Matsui
patent: 5786409 (1998-07-01), Kurple
patent: 6013116 (2000-01-01), Major et al.

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