Aqueous solution and method for use thereof
US9573808B2 · kind B2 · utility
3Cited by
56References
4Claims
0Family size
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Key dates
| Filing date | Jul 31, 2013 |
| Grant date | Feb 21, 2017 |
| Priority date | — |
| Expiry date | Nov 19, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B7/01
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An aqueous solution includes HCl present in an amount exceeding 37% by weight. The solution further includes a fixing agent that is urea and/or a urea derivative. The fixing agent is present in the solution in a molar ratio of between 0.25 and 2.0 of fixing agent to HCl, inclusive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.