2-cyanoacrylic esters

US5821380A · kind A · utility

Assignee

• BASF SE

Inventors

• Martin Holderbaum · Ludwigshafen, DE
• Alexander Aumuller · Neustadt, DE
• Hubert Trauth · Dudenhofen, DE
• Guido Voit · Freinsheim, DE
• Karin Sperling · Neustadt, DE
• Alfred Krause · Speyer, DE

Key dates

• Filing date: May 12, 1997
• Grant date: Oct 13, 1998
• Expiry date: May 12, 2017

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D7/48
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Novel 2-cyanoacrylic esters I ##STR1## where the radicals have the following meanings: R.sup.1 and R.sup.2 are each hydrogen or a radical having an iso- or heterocyclic ring system with at least one iso- or heteroaromatic nucleus, and at least one of the radicals R.sup.1 or R.sup.2 must be different from hydrogen, PA1 n is from 2 to 10, and PA1 X is, when n=2, a radical of the formula II ##STR2## where m is from 2 to 8, and X is, when n>2, the radical of an n-hydric aliphatic or cycloaliphatic polyol having 3-20 carbon atoms, it also being possible for a cycloaliphatic radical to contain 1 or 2 hetero atoms, and for an aliphatic radical to be interrupted by up to 8 non-adjacent oxygen atoms, sulfur atoms, imino or C.sub.1 -C.sub.4 -alkylimino groups, are used as light stabilizers.