Binders for cores and molds

Compositions: coating or plastic – Coating or plastic compositions – Alkali metal silicate containing

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106 383, 106 389, 164522, 164528, B22C 118, B22C 902

Patent

active

061396192

ABSTRACT:
An inorganic binder system for foundry compositions includes a silicate and added phosphate. The composition produces a binder having the advantageous strength properties of a silicate binder system with the dispersibility properties of a phosphate binder system. Methods of making and using the binder systems and the resulting products are of particular interest to the foundry art.

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Translation of German Patent Publication 2029701 Published Dec. 23, 1971.
Y.A. Owusu and A. B. Draper; "Inorganic Additives Improve The Humidity Resistance And Shakeout Properties of Sodium Silicate Bonded Sand"; AFS Transactions; pp. 47-54 (1980).
Abstract of U.S.S.R. Inventor's Certificate 801365 Published May 23, 1992.
Abstract of U.S.S.R. Inventor's Certificate 1678497 Published Sep. 23, 1991.
Abstract of U.S.S.R. Inventor's Certificate 1724415 Published Apr. 7, 1992.
Kirk-Othmer Chemical Encyclopedia; James S. Falcone, Jr.; 1980, pp. 867 and 868.
Sand Cores and Coremaking; Metals Handbook, 8th Edition, vol. 5, pp. 209-221, 1970.

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