Stablization of oxidation-sensitive or UV-sensitive active ingredients

US7214365B2 · kind B2 · utility

Assignee

• BEIERSDORF AG · DE

Inventors

• Volker Wendel · Seeheim-Jugenheim, DE
• Anja Göppel · Hamburg, DE

Key dates

• Filing date: Feb 27, 2004
• Grant date: May 8, 2007
• Expiry date: Apr 11, 2025

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61Q17/04
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

Cosmetic and dermatological formulations comprising at least one hydrophilic active ingredient and at least one dialkyl naphthalate which is characterized by the structural formulain which R1 and R2, independently of one another, are selected from the group of branched and unbranched alkyl groups having 6 to 24 carbon atoms, have been found to be stable and effective, particularly in moisturizing the skin or protection the skin from skin aging.