Self-hardening water-soluble mold and process for producing the

Details Self-hardening water-soluble mold and process for producing the Self-hardening water-soluble mold and process for producing the

1977-07-26

1980-04-01

Hayes, Lorenzo B.

Compositions: coating or plastic

Coating or plastic compositions

Molds and mold coating compositions

106 383, 106 3835, 106 389, 106 65, 106 69, B28B 736

Patent

active

041960114

ABSTRACT:
A mold produced by adding to a molding material consisting mainly of alumina a binder prepared by adding an inorganic water-soluble substance to an alcohol or a mixture of an alcohol and water, kneading and molding the mixture, and then drying the molded mixture has water-solubility and self-hardening property. Further, by suitable selection and combination of the inorganic water-soluble substance and the solvent in the binder, the drying step becomes unnecessary or the molding material shows fluidity at room temperature and a self-hardening water-soluble mold requiring no ramming is obtained.

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