Stabilizers

US4680327A · kind A · utility

Assignee

• BASF SE

Inventors

• Albert Hettche · Heßheim, DE
• Stefan Weiss · Trostberg, DE
• Hubert Trauth · Dudenhofen, DE
• Peter Lechtken · Bischofswerda, DE
• Michael Horner · Neustadt, DE

Key dates

• Filing date: Jan 29, 1986
• Grant date: Jul 14, 1987
• Expiry date: Jan 29, 2006

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K5/103
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Stabilizers consisting of (a) 2,5,7,8-tetramethyl-2-(2'-stearyloxyethyl)-chroman and (b) glyceryl stearate, glyceryl hydroxystearate, partial esters of stearic acid with condensates of glycerol and trimethylolpropane, triglyceryl stearate and/or tetraglyceryl stearate, with or without further conventional additives, the weight ratio of (a) to (b) being from 10:1 to 1:10, give improved stabilization to discoloration and superior stability during processing when used in plastics such as polyethylene or polypropylene.