Compositions containing quaternary ammonium compounds
US9132071B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 30, 2008 |
| Grant date | Sep 15, 2015 |
| Priority date | — |
| Expiry date | Dec 5, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61Q19/005
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Compositions containing quaternary ammonium compounds in which the nitrogen atom is substituted by at least one alkyl group having at least 12 carbon atoms, where composition includes at least 20% in weight by weight of the total composition, of ammonium halides in which the nitrogen atom is substituted by at least one alkyl group having at least 14 carbon atoms and more than 5%, preferably more than 7% in weight by weight of the total composition, of ammonium halides in which the nitrogen atom is substituted by at least one alkyl group having at least 16 carbon atoms. Ophthalmic oil-in-water emulsions containing such compositions, and the ophthalmic emulsions being are useful for eye care or for the treatment of eye conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.