Corrosion inhibited deicing composition and method of its use
US4990278A · kind A · utility
14Cited by
1References
30Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 26, 1998 |
| Grant date | Feb 5, 1991 |
| Priority date | — |
| Expiry date | Jan 26, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K3/185
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A low-temperature corrosion inhibited deicing composition is disclosed which comprises a major portion of magnesium chloride and an effective amount of an inhibitor including a polyphosphate salt to reduce corrosion, or a solution thereof. The solution form is preferred. Additional preferred aspects are provided where the inhibitor also includes a zinc-containing salt, and where the deicing composition is free from (or at least substantially so) chloride ions other than those due to the magnesium chloride. A method for low-temperature deicing of bridgework is described which includes the use of the inhibited deicing composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.