Piperidine derivatives as light stabilizers

US4140673A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Burkhard Lachmann · Rotterdam, NL
• Hans J. Rosenkranz · Krefeld, DE
• Harald Oertel · Odenthal, DE
• Alfred Pischtschan · Gundelsheim, DE
• Aziz El-Sayed · Leverkusen, DE

Key dates

• Filing date: Mar 17, 1977
• Grant date: Feb 20, 1979
• Expiry date: Mar 17, 1997

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K5/3435
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Piperidine derivatives of formula ##STR1## can be prepared by reacting 4-amino-piperidine with for example enolic ethers. The compounds obtained may be used as stabilizers.