Flowability of polycarbonate compositions
AssigneeCovestro Deutschland AG
InventorsRolf Wehrmann, Helmut Werner Heuer, Anke Boumans
Life of this patent
Estimating the term…
Abstract
The present invention relates to the use of diglycerol esters for enhancing the flowability of transparent polycarbonate compositions. Melt viscosities and melt volume flow rates are improved. In addition, the diglycerol esters also exert a positive effect on the optical properties by increasing the transmission of the compositions and reducing the yellowness index.
Claims9
A method comprising enhancing the flowability of a transparent polycarbonate composition comprising utilizing at least one diglycerol ester in combination with at least one phosphate, wherein the transparent polycarbonate composition exhibits a transmission, determined to ISO 13468 for a thickness of 4 mm, of at least 88% in the range from 400 nm to 800 nm.
Dependencies are inferred from the claim text.