Photostable cationic organic sunscreen compounds with antioxidant properties and compositions obtained therefrom
US6699463B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 10, 2002 |
| Grant date | Mar 2, 2004 |
| Priority date | — |
| Expiry date | Apr 24, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/52
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Compounds of Formula I Each R is independently linear or branched C1 to C8 alkyl, or linear or branched C1 to C8 alkoxy or one R is H and the other R is linear or branched C1 to C8 alkyl, or linear or branched C1 to C8 alkoxy;R1 is selected from the group consisting of COCH3, CO2R3, CONH2, CONH(R4)2, CN, COX(CH2)n-N—(R2)(R4)(R3), and the quaternized salt form of the formula COX(CH2)n-N—(R2)(R4)(R3)+Y−;X is O or NH;n is an integer of 1 to 5;Y is an anion; andR2, R3 and R4 are independently linear or branched C1 to C20.Hair care formulations and other compounds containing compounds of Formula I, and methods for protecting hair and substrates such as polymers, textiles, fabrics, leathers and paints using the compounds herein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.