US Patent:
20040055510, Mar 25, 2004
Inventors:
Karl Kurple - Casco MI, US
Kenneth Kurple - Casco MI, US
Concetta Kurple - Casco MI, US
International Classification:
C08L097/00
C08L005/00
US Classification:
106/640000, 106/795000, 106/801000, 106/804000, 106/123120, 106/217700
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.