Tetramethylpiperidine-containing copolymers

US5973040A · kind A · utility

Assignee

• BASF SE

Inventors

• Alfred Krause · Speyer, DE
• Alexander Aumuller · Neustadt, DE
• Hubert Trauth · Dudenhofen, DE
• Albin Berger · Bobenheim am Berg, DE
• Andreas Deckers · Flomborn, DE

Key dates

• Filing date: May 29, 1998
• Grant date: Oct 26, 1999
• Expiry date: May 29, 2018

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61K2800/57
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

A description is given of tetramethylpiperidine-containing copolymers comprising 1-100 mol % of identical or different monomer units of the general formula I ##STR1## (R.sup.1 =COOR.sup.7, COR.sup.8, CONR.sup.8 R.sup.9, CN; R.sup.2 =H, C.sub.1 -C.sub.12 -alkyl, COOR.sup.7, COR.sup.8, CONR.sup.8 R.sup.9, CN; R.sup.3 =H, methyl, ethyl, propyl; R.sup.6 =H, C.sub.1 -C.sub.8 -alkyl; R.sup.7 =H, C.sub.1 -C.sub.8 -alkyl, C.sub.5 -C.sub.8 -cycloalkyl, C.sub.3 -C.sub.5 -alkenyl, substituted or unsubstituted phenyl; R.sup.8 and R.sup.9 =H, C.sub.1 -C.sub.12 -alkyl, C.sub.5 -C.sub.8 -cycloalkyl, substituted or unsubstituted phenyl; X=oxygen, sulfur, NR.sup.6) and also other monomers, and also of processes for preparing the copolymers, of the use of the copolymers as stabilizers, including light stabilizers, and of organic material comprising the copolymers.