Tetrahydrofurancarboxylic acid derivatives

US4703072A · kind A · utility

Assignee

• BASF SE

Inventors

• Reinhard Helwig · Ludwigshafen, DE
• Peter Neumann · Wiesloch, DE
• Alexander Aumueller · Deidesheim, DE
• Hubert Trauth · Dudenhofen, DE

Key dates

• Filing date: Jun 16, 1986
• Grant date: Oct 27, 1987
• Expiry date: Jun 16, 2006

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K5/1535
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Novel tetrahydrofurancarboxylic acid derivatives of the general formula I ##STR1## or polymers of these containing units of the formula II ##STR2## where the radicals R independently of one another are each C.sub.1 -C.sub.4 -alkyl, cyclohexyl or phenyl, m is from 0 to 3, n is 1 or 2, and R' is a radical of the formula ##STR3## suitable terminal groups in the polymers being chlorine or hydroxyl in the case of the CO group and hydrogen in the case of the --NR.sup.2 group, A is a bridge member, R.sup.1 is hydrogen, C.sub.2 -C.sub.6 -alkenyl, C.sub.1 -C.sub.12 -alkyl which may be interrupted by up to 3 oxygen atoms, unsubstituted or substituted phenylalkyl or C.sub.5 -C.sub.7 -cycloalkyl and R.sup.2 is radical of the formula ##STR4## where R.sup.3 is hydrogen or methyl, R.sup.4, R.sup.5, R.sup.6 and R.sup.7 are each methyl or ethyl and R.sup.8 is hydrogen, C.sub.1 -C.sub.8 -alkyl, C.sub.3 -C.sub.8 -alkenyl, C.sub.2 -C.sub.4 -hydroxyalkyl or aralkyl, and salts of the compounds I and II, are very useful as light stabilizers for organic polymers.