Stabilization of perfluoroalkyl alkyl ketones
US6531075B1 · kind B1 · utility
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22Claims
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Key dates
| Filing date | Oct 29, 1999 |
| Grant date | Mar 11, 2003 |
| Priority date | — |
| Expiry date | Oct 29, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C45/86
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Acids having a pKa of less than about 4 may be used to stabilize certain perfluoroalkyl alkyl ketones, particularly a substantially pure perfluoroalkyl alkyl ketone, a substantially pure aqueous solution of a perfluoroalkyl alkyl ketone or a substantially pure hydrate of a perfluoroalkyl alkyl ketone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.