Quaternary nitrogen-containing vitamin E derivatives and uses thereof
US5352696A · kind A · utility
9Cited by
4References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 22, 1993 |
| Grant date | Oct 4, 1994 |
| Priority date | — |
| Expiry date | Jan 22, 2013 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61Q1/06
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A quaternary nitrogen-containing vitamin E and quaternary nitrogen-containing polyethoxylated vitamin E are disclosed. Methods for preparing the quaternary nitrogen-containing vitamin E derivatives which comprises reacting vitamin E or polyethoxylated vitamin E with a quaternizing agent selected from quaternary halohydrins and epoxides to effect a quaternization are also disclosed. The quaternary nitrogen-containing vitamin E derivatives show an improved substantivity to skin or hair and a good water dispersibility as well as may be employed as an useful surface active agent in cosmetics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.