Thermotropic aromatic polyester with high thermal stability

US4801677A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Volker Eckhardt · Walsrode, DE
• Hans-Rudolf Dicke · Bestwig, DE
• Ludwig Bottenbruch · Krefeld, DE
• Dieter Freitag · Krefeld, DE
• Ulrich Biskup · Leverkusen, DE

Key dates

• Filing date: Jan 15, 1987
• Grant date: Jan 31, 1989
• Expiry date: Jan 15, 2007

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G63/193
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Thermotropic aromatic polyesters which contain condensed radicals of bis-.alpha., .omega.-(4-hydroxyphenyl)-n-alkanes, have high dimensional stability under heat and at the same time high thermal stability. They can be processed thermoplastically at temperatures below 370.degree. C.