4-Aminomethylpolyalkylpiperidines useful as light stabilizers

US4440887A · kind A · utility

Assignee

• Sandoz AG · CH

Inventors

• Hans Hinsken · Lörrach, DE
• Wolfgang Mueller
• Hermann Schneider · Schweich, DE

Key dates

• Filing date: Jan 22, 1982
• Grant date: Apr 3, 1984
• Expiry date: Jan 22, 2002

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31688
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Compounds of formula I ##STR1## where R.sub.1, R.sub.2 and R.sub.3 are defined in the text, are useful as light stabilizers for polymeric materials, particularly for thermoplastic polymers and automotive finishes. Preferred compounds are those in which R.sub.1 is hydrogen and R.sub.2 and R.sub.3 are identical (C.sub.8-17 alkyl)carbonyl groups.