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US 7,235,598 B1Granted
Polycarbonate moulding materials with anti-static properties
AssigneeBayer MaterialScience AG
InventorsMichael Zobel, Thomas Eckel, Dieter Wittmann, Bernd Keller
Life of this patent
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Abstract
A thermoplastic molding compositions comprising thermoplastic polycarbonate and an additive amount of an aluminum compound is disclosed. The aluminum compound is characterized by its particle size and the composition is characterized by its improved anti-static properties.
Claims5
A thermoplastic molding composition consisting of:
- 40 to 99 parts by wt. aromatic polycarbonate;
- 1 to 30 parts by wt. vinyl copolymer;
- 0.5 to 60 parts by wt. graft polymer;
- 0.1 to 30 parts by wt. of an aluminum oxide hydroxide having an average particle diameter of 1 nm–20 μm;
- and
- at least one additive selected from the group consisting of stabilizers, pigments, mold release agents, flow auxiliaries antistatics, fillers, reinforcing materials and inorganic compounds.
3 more elements
Dependencies are inferred from the claim text.