Additive for green moulding sands
US4867228A · kind A · utility
9Cited by
4References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 4, 1988 |
| Grant date | Sep 19, 1989 |
| Priority date | — |
| Expiry date | Mar 4, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22C1/02
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An additive for green moulding sands for use in foundry industry comprising a "stabilized" and polyhydroxylated carbohydrate, in particular as aqueous solution, and preferably consisting of a monosaccharidic and/or oligosaccharidic derivatives where any of the aldehydic and ketonic functions have been selectively reduced or oxidated. The additive improves the flowability and plasticity of the moulding said with a reduced moisture demand and a better surface finishing of the castings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.