Stabilizer mixtures for plastics

US4806580A · kind A · utility

Assignee

• BASF SE

Inventors

• Gustav Bock
• Hubert Trauth · Dudenhofen, DE
• Wilhelm Weber · Neustadt, DE
• Peter Lechtken · Bischofswerda, DE

Key dates

• Filing date: Oct 9, 1987
• Grant date: Feb 21, 1989
• Expiry date: Oct 9, 2007

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K5/5393
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Stabilizer mixtures for stabilizing plastics comprising one part by weight of a chroman derivative (I) of the general formula ##STR1## where R= ##STR2## where Z=C.sub.7 -C.sub.30 -alkyl, --CH.sub.2 CH.sub.2 --S--[C.sub.1 -C.sub.30 -alkyl] or ##STR3## and from 5 to 14 parts by weight of an organic phosphite of the general formula (II) ##STR4## where R.sup.1, R.sup.2 and R.sup.3 are identical of different alkyl and/or aryl or of an organic phosphonite of the formula (III) ##STR5## where +is C(CH.sub.3).sub.3, a mixing ratio (a):(b) of from 1:6 to 1:10 being preferred.