Polyaryl ethers which are stable at high temperatures and have improved processibility

US4997902A · kind A · utility

Assignee

• BASF SE

Inventors

• Juergen Koch · Schifferstadt, DE
• Robert R. Lieder · Schifferstadt, DE
• Gerhard Heinz · Bad Dürkheim, DE

Key dates

• Filing date: Feb 10, 1989
• Grant date: Mar 5, 1991
• Expiry date: Feb 10, 2009

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L2205/05
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Polyaryl ethers which are stable at high temperatures essentially consist of PA0 (A) from 60 to 97 mol % of repeating units of the general formula I ##STR1## where l and m are each 1 or 2, or their C.sub.1 -C.sub.6 -alkyl, C.sub.1 -C.sub.6 -alkoxy, aryl, chlorine or fluorine derivatives which are substituted in the nucleus, PA0 (B) from 3 to 40 mol % of repeating units of the general formula II ##STR2## where n is 1 or 2, or their C.sub.1 -C.sub.6 -alkyl, C.sub.1 -C.sub.6 -alkoxy, aryl, chlorine or fluorine derivatives which are substituted in the nucleus, and furthermore PA0 (C) from 0 to 15 mol % of repeating units of the general formulae III and/or IV ##STR3## where Ar is ##STR4## or a C.sub.1 -C.sub.6 -alkyl, C.sub.1 -C.sub.6 -alkoxy, chlorine or fluorine derivative thereof, r is 0 or 1 and p, q and s are each 1 or 2, or their C.sub.1 -C.sub.6 -alkyl, C.sub.1 -C.sub.6 -alkoxy, aryl, chlorine or fluorine derivatives which are substituted in the nucleus.