Graphite-containing polycarbonate compositions containing a new type of flow promoter

US11279812B2 · kind B2 · utility

Assignee

• Covestro Deutschland AG · DE

Inventors

• Rolf Wehrmann · Krefeld, DE
• Helmut-Werner Heuer · Krefeld, DE
• Anke Boumans · Goch, DE

Key dates

• Filing date: Jan 19, 2018
• Grant date: Mar 22, 2022
• Expiry date: Dec 7, 2038

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L2205/025
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to thermally conductive, graphite-containing polycarbonate compositions having high flowability and mouldings for the electricals and electronics industries for heat management, in particular for complex cooling plates, heat sinks and housings in lighting technology. The compositions according to the invention are in particular also suitable for thin wall designs. The compositions contain at least one saturated or unsaturated monocarboxylic acid having a chain length of 6 to 30 carbon atoms and at least one ester of this monocarboxylic acid based on glycerol and/or diglycerol.