Binding medium and ceramic shell composition for a precision cas

Details Binding medium and ceramic shell composition for a precision cas Binding medium and ceramic shell composition for a precision cas

1976-02-19

1978-03-21

Hayes, Lorenzo B.

Compositions: coating or plastic

Coating or plastic compositions

Molds and mold coating compositions

106 383, 1062871, 1062873, B28B 734

Patent

active

040802140

ABSTRACT:
The binding medium employs a mixture of ethyl silicate, anhydrous solvent and organo-functional hydrophilic silicon compounds containing at least one carbon-fixed amino group. The binding medium is capable of absorbing humidity from the air to bring about hydrolysis. The binding medium is also capable of unlimited durability if stored in an air-free dry condition. A hydrophilic alcoholate of titanium may also be added to the mixture to improve hydrolysis and gelling. The binder is mixed with a refractory ceramic filler to form a ceramic shell composition.

REFERENCES:
patent: 2852399 (1958-09-01), Bellezanne
patent: 3329520 (1967-07-01), Emblem et al.
patent: 3832204 (1974-08-01), Boaz
patent: 3879206 (1975-04-01), Nestler et al.

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