Freeze modification agent
US4277520A · kind A · utility
1Cited by
1References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 14, 1980 |
| Grant date | Jul 7, 1981 |
| Priority date | — |
| Expiry date | May 14, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K3/18
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The strength of ice is reduced by dissolving in water prior to freezing a composition of (A) a water-soluble polyhydroxy compound or monoalkylether thereof and (B) an alkali metal carbonate in an amount to provide an effective amount of (A) plus (B). The method is especially useful for application to particulate solids, such as coal and mineral ores, which are shipped and stored in masses exposed to freezing temperatures. Any ice that is formed is physically weak and will not deter the unloading of the thusly conditioned particulate solids.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.