Process for the preparation of polyarylene sulphides

US4362864A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Karsten-Josef Idel · Krefeld, DE
• Dieter Freitag · Krefeld, DE
• Ludwig Bottenbruch · Krefeld, DE
• Josef Merten · Korschenbroich, DE

Key dates

• Filing date: May 14, 1981
• Grant date: Dec 7, 1982
• Expiry date: May 14, 2001

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G75/0231
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A process for preparing a polyarylene sulphide which comprises reacting PA1 (a) dihalogenobenzene consisting of 50 to 100 mol % of a compound of the formula ##STR1## or a compound of the formula ##STR2## or a mixture thereof and of 0 to 50 mol % of a compound of the formula ##STR3## wherein X is halogen and each R is selected from the group consisting of hydrogen, alkyl having 1 to 20 carbon atoms, cycloalkyl having 5 to 20 carbon atoms, aryl having 6 to 24 carbon atoms, alkaryl having 7 to 24 carbon atoms and aralkyl having 7 to 24 carbon atoms with the proviso that at least one R is other than hydrogen and PA1 (b) 0 to 3.0 mol % based on the dihalogenobenzene content of a polyhalogeno aromatic of the formula EQU ArX.sub.n (IV) PA1 wherein Ar is an aromatic or heterocyclic radical with 6 to 24 carbon atoms having at least 3 free valencies, X is halogen and n is .gtoreq. 3 with PA1 (c) an alkyl metal sulphide in PA1 (d) a polar solvent in the presence of PA1 (e) 0.05-2.0 mol of alkali metal fluoride per mol of alkali metal sulphide, for a polycondensation time of up to 30 hours and at a polycondensation temperature of between 160.degree. and 295.degree. C., the molar ratio of (a) t…