Aqueous acid cleaning, corrosion and stain inhibiting compositions in the vapor phase comprising a blend of nitric and sulfuric acid
US8618037B2 · kind B2 · utility
2Cited by
14References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 5, 2012 |
| Grant date | Dec 31, 2013 |
| Priority date | — |
| Expiry date | Jan 5, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D2111/20
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The present invention relates to sulfuric/nitric blended acid cleaners which employ the use of ethoxylated amines and/or ethoxylated alcohols as a corrosion and stain inhibitor in the vapor phase for cleaning metal and other surfaces, particularly stainless steel. Method of use and manufacturing of the same are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.