Liquid and transparent blend of UV filters

US11723850B2 · kind B2 · utility

Assignee

• SYMRISE AG · DE

Inventors

• William Johncock · Reinbek, DE
• Jürgen Claus · Waiblingen, DE

Key dates

• Filing date: Nov 2, 2018
• Grant date: Aug 15, 2023
• Expiry date: Nov 2, 2038

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61K2800/87
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

Suggested is a liquid and transparent blend of UV filters, comprising, consisting or essentially consisting of (a) at least one solid UVA filter dissolved in (b) at least one liquid UVB filter exhibiting a linear UV absorbance curve with a variance of +/−10% in the range of 290 to 360 nm as measured from a solution containing 10 mg/l of said mixture in ethanol, wherein said solid UVA filters are selected from the group consisting of Avobenzone, Bemotrizinol and mixtures thereof.