Ionic liquids of heterocyclic amines
US8148533B2 · kind B2 · utility
2Cited by
3References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 4, 2005 |
| Grant date | Apr 3, 2012 |
| Priority date | — |
| Expiry date | Mar 9, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Ionic liquids having melting points below about 100 C formed by reaction of a heterocyclic amine with about 2.8 and about 3.2 moles of anhydrous hydrogen fluoride per mole of amine nitrogen. Electrochemical devices having non-aqueous electrolytes containing the ionic liquids are also disclosed, as well as silicon oxide etching compositions containing the ionic liquids and etching methods in which silicon oxides are selectively removed by the etching compositions in the presence of aluminum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.