Cyclic amides

US5145966A · kind A · utility

Assignee

• BASF SE

Inventors

• Alexander Aumueller · Deidesheim, DE
• Hubert Trauth · Dudenhofen, DE

Key dates

• Filing date: Oct 12, 1990
• Grant date: Sep 8, 1992
• Expiry date: Oct 12, 2010

Classification

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

Abstract

Cyclic amides of the general formula I ##STR1## where A is a group of the formula ##STR2## where in each case the left-hand free bond is linked to the amide nitrogen and the right-hand free bond, depending on the group, is a single or double bond, and where R.sup.7 to R.sup.12 are hydrogen, C.sub.1 -C.sub.4 -alkyl or phenyl, and R.sup.13 is one of the radicals R.sup.7 to R.sup.12 or hydroxyl, PA1 R.sup.1 to R.sup.4 are C.sub.1 -C.sub.4 -alkyl, where R.sup.1 and R.sup.2 and/or R.sup.3 and R.sup.4 may in each case be linked to form a 5- or 6-membered ring, PA1 R.sup.5 is hydrogen or C.sub.1 -C.sub.3 -alkyl, and PA1 R.sup.6 is hydrogen, C.sub.1 -C.sub.4 -alkyl which may additionally be substituted by cyano, hydroxyl, amino or phenyl, or is C.sub.1 -C.sub.4 -acyl. are described and are used as stabilizers for organic materials.