Long wavelength shifted benzotriazole uv-absorbers and their use

US8262949B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Katharina Fritzsche · Weil am Rhein, DE
• Markus Grob · Reinach, CH
• Adalbert Braig · Weil am Rhein, DE
• ILona Marion Kienzle · Weil am Rhein, DE
• Gérard Daniel Georges Vilain · Schallstadt, DE

Key dates

• Filing date: Jun 18, 2007
• Grant date: Sep 11, 2012
• Expiry date: Feb 10, 2028

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K5/3475
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The instant invention relates to novel benzotriazole UV-absorbers having a long wavelength shifted absorption spectrum with significant absorbance up to 410-420 nm. Further aspects of the invention are a process for their preparation, a UV stabilized composition containing the new UV-absorbers and the use of the new compounds as UV-light stabilizers for organic materials.