Flame-resistant polycarbonate compositions containing phosphorus-silicon compounds
AssigneeBayer Aktiengesellschaft
InventorsAndreas Seidel, Michael Wagner, Jochen Endtner, Wolfgang Ebenbeck, Thomas Eckel, Dieter Wittmann
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Abstract
A flame resistant poly(ester)carbonate composition is disclosed. The composition contains at least one phosphorus-silicon compound, the compound has a phosphorus content of 1 to 20% and a silicon content of 1 to 20%, and is characterized in that its weight loss (assessed by thermogravimetric analysis under nitrogen inert gas at a heating rate of 20° K/min,) at 280° C. is less than 30%. The preferred phosphorus-silicon compound is produced by thermal oligomerization from phosphorylated silanes.
Claims18
A poly(ester)carbonate composition comprising at least one phosphorus-silicon compound, said compound having a phosphorus content of 1 to 20% and a silicon content of 1 to 20%, and characterized in that its weight loss assessed by thermogravimetric analysis under nitrogen inert gas at a heating rate of 20° K/min, at 280° C. is less than 30% the cited percents, all occurrences, referring to the weight of the phosphorus-silicon compound.
Dependencies are inferred from the claim text.