Foundry mold composition, foundry mold made therefrom and method for producing the same
US5372636A · kind A · utility
9Cited by
11References
57Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 22, 1993 |
| Grant date | Dec 13, 1994 |
| Priority date | — |
| Expiry date | Jan 22, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2111/00939
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A composition for use in producing a foundry mold, a foundry mold of the composition and a method for making the foundry mold from the composition. The composition includes sodium smectite clay and at least one of a metal oxide, hydroxide or salt as a mineral clay component of the composition. This mineral clay component is present in the composition along with water and foundry sand. The metal of the oxide, hydroxide or salt may be aluminum, calcium, iron, potassium, magnesium, boron or zinc. The sodium smectite clay may be at least one of bentonite, hectorite or saponite.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.