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AssigneeCovestro Deutschland AG
InventorsHelmut Werner HEUER, Rolf WEHRMANN, Anke BOUMANS, Michael ERKELENZ, Hans FRANSSEN
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The present invention relates to glass fibre, carbon fibre and/or carbon nanotube reinforced polycarbonate compositions comprising flame retardant, diglycerol monoester and optionally antidripping agent and having high flowability, excellent stiffness and possibly improved flame retardant properties. The present invention further relates to the use of the compositions according to the invention in particular in the manufacture of housing parts in the EE and IT sector, for example for electrical housings/junction boxes or for frames of LCD/LED screens and also for component parts for the manufacture of Ultrabooks.
-15. (canceled)
Composition comprising
Composition according to any preceding claim, characterized in that the flame retardant present is an alkali and/or alkaline earth metal salt of an aliphatic/aromatic sulphonic acid or of a sulphonamide.
Composition according to any preceding claim, characterized in that at least 0.05 wt % of an antidripping agent is present.
Composition according to any preceding claim, comprising glass fibres and from 0.001 to 1.0 wt % of a flame retardant.
Composition according to any preceding claim, characterized in that glass fibres are present and the glass fibres have a precompounding length of 3 mm to 6 mm.
Composition according to any preceding claim, characterized in that glass fibres are present and the glass fibres are chopped glass fibres.
Composition according to any preceding claim, characterized in that the composition has a melt volume flow rate MVR of 7-25 cm3/10 min, determined to ISO 1133 (test temperature 300° C., mass 1.2 kg) and the modulus of elasticity, determined to ISO 527, is at least 2700 kg*m−1*s−2.
Use of diglycerol esters to improve the flowability of polycarbonate melts.
A composition comprising
A method comprising utilizing a diglycerol ester to improve the flowability of polycarbonate melts.
Dependencies are inferred from the claim text.