Process for stabilizing plastics containing ester groups

US5210170A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Bernd Quiring · Leverkusen, DE
• Thomas Munzmay · Dormagen, DE
• Wolfgang Henning · Zorneding, DE
• Eduard Mayer · Dormagen, DE
• Walter Meckel · Neuss, DE
• Wilhelm Goyert · Leverkusen, DE

Key dates

• Filing date: May 31, 1991
• Grant date: May 11, 1993
• Expiry date: May 31, 2011

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G2150/20
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to a process for stabilizing ester-containing plastics against degradation by heat and/or hydrolysis by the incorporation of sterically hindered isocyanate-terminated carbodiimides. The incorporable carbodiimides produce an excellent anti-aging effect and do not give rise to volatile products, even at very high temperatures.