Dissociation of 1,4-bis (4-phenoxybenzoyl)benzene—Lewis acid complex in a protic solvent

US10793500B2 · kind B2 · utility

Assignee

• ARKEMA FRANCE · FR

Inventors

• Julien Jouanneau · Heather Lane, FR
• Guillaume Le · Colombelles, FR
• Steven G. Schon · Strafford, US
• John Richardson · King of Prussia, US
• Guillaume VINCENT · Caen, FR
• Jér{hacek over (o)}me Amstutz · Charly, FR

Key dates

• Filing date: Nov 9, 2018
• Grant date: Oct 6, 2020
• Expiry date: Dec 7, 2038

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G2650/62
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A method for manufacturing 1,4-bis(4-phenoxybenzoyl)benzene, including: reacting terephthaloyl chloride with diphenyl ether in the presence of a Lewis acid, so as to obtain a product mixture including 1,4-bis(4-phenoxybenzoyl)benzene-Lewis acid complex, wherein the 1,4-bis(4-phenoxybenzoyl)benzene-Lewis acid complex is, at least partly, in the form of a precipitate; carrying out a solid/liquid separation of the product mixture to obtain a cake comprising the 1,4-bis(4-phenoxybenzoyl)benzene-Lewis acid complex precipitate; putting the cake in contact with a decomplexing solvent, wherein the decomplexing solvent is a protic solvent, so as to dissociate the 1,4-bis(4-phenoxybenzoyl)benzene-Lewis acid complex into 1,4-bis(4-phenoxybenzoyl)benzene; and, recovering the 1,4-bis(4-phenoxybenzoyl)benzene. Also, a method for manufacturing a polyaryletherketone polymer starting from 1,4-bis(4-phenoxybenzoyl)benzene manufactured by the above method.