Ester based phosphobetaine compounds
US6794524B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 18, 2003 |
| Grant date | Sep 21, 2004 |
| Priority date | — |
| Expiry date | Oct 8, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F9/091
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The invention relates to a series of novel ester containing phosphobetaine compounds, which are exceptional surface active agents that provide outstanding foam and are very mild to the hair and skin, in addition because of the presence of the ester linkage these materials are not persistent in the aquatic environment. This lack of persistence in the aquatic environment makes these materials greener and environmentally friendly than other non-ester containing compounds. The compounds, because they contain a pendant ionizable phosphate group and a quaternary amine compound are amphoteric surfactants that is they contain both a positive and negative charge in the same molecule. This combination of properties makes these polymers ideally suited for use in personal care applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.