Flame-resistant moulding materials based on thermoplastic aromatic polyesters and polyesters carbonates, a process for their production and their use in the production of moulded bodies

US4366276A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Dieter Freitag · Krefeld, DE
• Werner Nouvertne · Krefeld, DE
• Klaus Reinking · Wermelskirchen, DE
• Peter Tacke · Krefeld, DE
• Frank Kleiner · Cologne, DE
• Manfred Schmidt · Krefeld, DE

Key dates

• Filing date: Jun 7, 1981
• Grant date: Dec 28, 1982
• Expiry date: Jun 7, 2001

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L27/18
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Aromatic polyesters and polyestercarbonates based on diphenols and iso- and/or terephthalic acids become flame-proof if admixed with small quantities of ammonium or alkali metal salts of inorganic or organic acids and optionally halophthalimides and optionally polytetrafluoroethylene. The mechanical and chemical properties of the polyester (carbonates) remain unchanged.