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US 10,472,516 B2Granted
Improving the flowability of thermoconductive polycarbonate compositions
AssigneeCoverstro Deutschland AG
InventorsHelmut Werner Heuer, Rolf Wehrmann, Anke Boumans, Michael Erkelenz
Life of this patent
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Abstract
The present invention relates to the use of diglycerol esters to enhance the flowability of graphite-containing, thermally conductive polycarbonate compositions. Melt viscosities and melt volume flow rates are improved.
Claims14
A polycarbonate composition comprising
- A) 20 wt % to 94.8 wt % of an aromatic polycarbonate,
- B) 5 to 40 wt % of graphite and
- C) 0.2 wt % to 3.0 wt % of diglycerol ester.
A method comprising adding at least one diglycerol ester to enhance the melt volume flow rate determined as per DIN EN ISO 1133 (DIN EN ISO 1133-1:2012-03) at a test temperature of 300° C. with a mass of 1.2 kg to a thermally conductive polycarbonate composition comprising graphite.
Dependencies are inferred from the claim text.