Polycarbonate blends

US6740714B2 · kind B2 · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Silke Kratschmer · Krefeld, DE
• Klaus Horn · Dortmund, DE
• Michael Erkelenz · Duisburg, DE

Key dates

• Filing date: Jul 17, 2002
• Grant date: May 25, 2004
• Expiry date: Aug 6, 2022

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L69/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A thermoplastic molding composition suitable for making articles having good combination of properties is disclosed. The composition contains(A) a copolycarbonate derived from compounds of formula (I) wherein R1 to R4 independently of one another represent H, C1-C4-alkyl, phenyl, substituted phenyl or halogen, and compounds of formula (II) wherein R5 to R8 independently of the others denote H, CH3, Cl or Br and X is C1-C5-alkylene, C2-C5-alkylidene, C5-C6-cycloalkylene, C5-C10-cycloalkylidene, and (B) a homopolycarbonate derived from bisphenol A. The composition that features resistance to stress cracking and good low-temperature properties is suitable for automotive construction and exterior applications.