Thermoplastic polycarbonate moulding compositions with flame-resistant properties

US5240978A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Karl Fuhr · Krefeld, DE
• Friedemann Muller · Neuss, DE
• Karl-Heinz Ott
• Jochen Schoeps · Krefeld, DE
• Horst Peters · Leverkusen, DE
• Werner Ballas · Dormagen, DE

Key dates

• Filing date: May 20, 1992
• Grant date: Aug 31, 1993
• Expiry date: May 20, 2012

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L83/10
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A flame resistant molding composition containing a polycarbonate resin, a graft polymer and, as a flame retarding agent a phosphoric acid ester of novolak in combination with an anti drip agent is disclosed. The composition may further contain a thermoplastic copolymer and/or polyalkylene terephthalate. A process for the preparation of the composition is also disclosed.