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US 6,646,101 B2Granted
Use of copolycarbonates
AssigneeBayer Aktiengesellschaft
InventorsSilke Kratschmer, Klaus Horn, Annett König, Rolf Wehrmann, Steffen Kühling
Life of this patent
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Abstract
The present invention provides the use of impact resistant, stress cracking resistant copolycarbonates with particularly good low temperature properties for applications in which particularly good low temperature properties are required, e.g., for automobile construction or external applications, and new copolycarbonates themselves.
Claims5
A process of using a thermoplastic molding composition that contains a copolycarbonate comprising 34 to 26 mole % of residues of compounds corresponding to formula (I),
- wherein
- R1 to R4 independently of one another, represent H, C1-C4-alkyl, phenyl, substituted phenyl or halogen, and 56 to 74 mole % of residues of compounds corresponding to formula (II)
- wherein
- R5to R8 independently of one another, are H, CH3, Cl or Br, and
- X is C1-C5-alkylene, C2-C5-alkylidene, C5-C6-cycloalkylene, C5-C10-cycloalkylidene, as monomers,
- wherein the total of said mole % of residues of monomers corresponding to formula (I) and formula (II) is equal to 100 mole % the process comprising molding an article and subjecting the article to temperature lower than 0° C..
3 more elements
Dependencies are inferred from the claim text.