Mixture for stabilizing polyurethanes

US4925888A · kind A · utility

Assignee

• BASF SE

Inventors

• Alexander Aumueller · Deidesheim, DE
• Peter Neumann · Wiesloch, DE
• Peter Spang · Sankt Ingbert, DE
• Guenter Matzke · Heidelberg, DE
• Hubert Trauth · Dudenhofen, DE

Key dates

• Filing date: Oct 21, 1988
• Grant date: May 15, 1990
• Expiry date: Oct 21, 2008

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K5/3475
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A mixture for stabilizing polyurethanes contains PA1 (a) an amine of the formula I ##STR1## (b) a mixture of the benzotriazoles II and III ##STR2## in which n is chosen so that the mean molecular weight of the mixture is greater than 600, and PA1 (c) .alpha.-tocopherol, if necessary mixed with tris-(nonylphenyl) phosphite, and polyurethanes contain from 0.005 to 5.0% by weight, based on the material to be stabilized, of this mixture.