Polycarbonate compositions having reduced tendency to splay

US6046301A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Daniel Henry Bolton · Kingsport, US
• Sivaram Krishnan · Pittsburgh, US
• Jon M. Newcome · Aliquippa, US
• Jeffrey M. Tennant · Weirton, US
• David M. Derikart · Lower Burrell, US
• Ramesh M. Pisipati · Wexford, US
• Wolfgang Ebert · Krefeld, DE

Key dates

• Filing date: Apr 12, 1999
• Grant date: Apr 4, 2000
• Expiry date: Apr 12, 2019

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K5/1565
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A transparent thermoplastic molding composition having good release properties is disclosed. The composition which contains no magnetic elements contains a polycarbonate resin and 0.01 to 0.3 percent by weight of a mold release agent. The agent is the product of a reaction of a compound represented by formula (I) ##STR1## where R.sub.1 denotes a C.sub.1-30 -alkyl group, with at least one member selected from the group consisting of ##STR2## where R.sub.2 and R.sub.3 independently denote C.sub.1-30 - alkyl or an aryl group, and ##STR3## where n is 1-7.