Novel sand/silicate compositions for foundry molds/cores

Details Novel sand/silicate compositions for foundry molds/cores Novel sand/silicate compositions for foundry molds/cores

1981-07-14

1982-12-14

Hayes, Lorenzo B.

Compositions: coating or plastic

Coating or plastic compositions

Molds and mold coating compositions

106 3835, 106 389, 106 84, 164 16, 164528, B28B 734

Patent

active

043636659

ABSTRACT:
Foundry mold and core compositions containing sand, an alkali metal silicate and a hardening agent therefor include, and are characterized by, a demolding agent comprising a finely divided inorganic metal compound, together with from 1 to 99% by weight thereof, of a hydrated alumina having an average grain size ranging from 0.2 to 5.mu..

REFERENCES:
patent: 3137046 (1964-06-01), Barcow et al.
patent: 3203057 (1965-08-01), Alunt et al.
patent: 4213785 (1980-07-01), Blanc et al.
patent: 4233076 (1980-11-01), Blanc et al.

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