Aromatic polyester phosphonates

US4328174A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Manfred Schmidt · Krefeld, DE
• Dieter Freitag · Krefeld, DE
• Ludwig Bottenbruch · Krefeld, DE
• Klaus Reinking · Wermelskirchen, DE
• Harry Rohr · Frechen, DE
• Harald Medem · Krefeld, DE

Key dates

• Filing date: Jun 19, 1980
• Grant date: May 4, 1982
• Expiry date: Jun 19, 2000

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G63/6926
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Polyester phosphonates based on aromatic dicarboxylic acids and aromatic dihydroxy compounds exhibit a low flammability and surprisingly improved mechanical characteristics, particularly an excellent dimensional heat stability.