Amphoteric metal oxides as cocatalyst in the electrophilic synthesis of polyaryl ether ketones

US5612451A · kind A · utility

Assignee

• BASF SE

Inventors

• Thomas Heitz · Ludwigshafen am Rhein, DE
• Alexander Gl uck · Bad Dürkheim, DE
• Walter Heitz · Kirchhain, DE
• Ralf Richter · Dresden, DE

Key dates

• Filing date: Jul 6, 1995
• Grant date: Mar 18, 1997
• Expiry date: Jul 6, 2015

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K3/22
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Polyaryl ether ketones are prepared by electrophilic polycondensation using acyl halides as monomer components in the presence of a Lewis acid, by a process in which from 0.001 to 60% by weight of an inert filler or of a component which can be converted into an inert filler during working up are added to the reaction mixture before or during the polycondensation.