Merocyanine derivatives

US9550730B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Barbara Winkler · Lörrach, DE
• Dietmar Hueglin · Basel, CH
• Kai Eichin · Kandern, DE
• Larissa Ehrsam · Riehen, CH
• Xavier Marat · Paris, FR
• Herve Richard · Villepinte, FR
• ILona Marion Kienzle · Weil am Rhein, DE
• Ute Schroeder · White Plains, US

Key dates

• Filing date: Jul 19, 2012
• Grant date: Jan 24, 2017
• Expiry date: Aug 3, 2032

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C2601/16
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Disclosed are compounds of formula (1) and (2) and/or E/E-, E/Z- or Z/Z geometrical isomer forms thereof; wherein R1-R5, R1-R11 and A are defined as in description. The compounds are used as UV absorbers for protecting household products from photolytic and oxidative degradation, as plastic additives, preferably for food and pharmaceutical packaging applications, for preventing photo-degradation of food by incorporation of the compounds of formula (1′) and/or (2′) into transparent food containers, for protection of UV-A sensitive drugs from photo-degradation by incorporation of UV absorber in transparent blister foils or transparent pharmacy containers, as additives for photographic and printing applications, as additives for electronic applications and protecting the ingredients in agriculture applications.