Environmentally safe snow and ice dissolving liquid
US6319422A · kind A · utility
0Cited by
7References
9Claims
0Family size
Inventors
Key dates
| Filing date | Mar 25, 1998 |
| Grant date | Nov 20, 2001 |
| Priority date | — |
| Expiry date | Mar 25, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K3/185
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to a snow-and ice dissolving composition comprising an aqueous solution of urea and ammonium-nitrate. The aqueous solution has a mass ratio of (4.5-5.5):(3.6-4.4):(6.3-7.7). In addition, 1.5-2.0 mass per cent of benzoic-acid and/or 0.10-0.25 mass per cent of benzo-or tolyl triazol as corrosion inhibitors can be added.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.