Back to results
US 6,586,556 B2Granted
Use of copolycarbonates
AssigneeBayer Aktiengesellschaft
InventorsSilke Kratschmer, Klaus Horn, Annett König, Rolf Wehrmann, Steffen Kühling
Life of this patent
Estimating the term…
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.
Claims13
Thermoplastic copolycarbonates 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, preferably for H, C1-C4-alkyl or halogen
- and 56 to 74 mole % of residues of compounds corresponding to formula (II)
- wherein
- R5 to 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 %, said compounds being for use as materials in areas in which particularly good low temperature properties are required.
4 more elements
Dependencies are inferred from the claim text.