B - Operations – Transporting – 22 – C
Patent
B - Operations, Transporting
22
C
342/10, 22/164,
B22C 1/22 (2006.01) B22C 1/02 (2006.01) C08G 8/10 (2006.01) C08G 16/02 (2006.01)
Patent
CA 1339988
The present invention provides a binder solution having a low solids level which provides improved tensile properties when used with reclaimed sand. This binder solution comprises an alkaline phenolic resin which is cured at ambient temperature with an ester-functional curing agent. Also provided by this invention are raw batch formulations comprising sand, a binder solution having a low solids level, and a curing agent. These raw batch formulations include embodiments wherein the low solids levels are obtained by the separate addition of a solvent. The methods for producing foundry molds and cores of this invention included those procedures wherein dilution water is used to reduce the solids contents of conventional, relatively high solids content binder solutions.
591017
Cooke Richard C.
Iyer S. Raja
Johnson Calvin K.
Acme Resin Corporation
Ha-International Llc
Macrae & Co.
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