Production of aromatic polysulphones

Details Production of aromatic polysulphones Production of aromatic polysulphones

C - Chemistry, Metallurgy

08

G

402/320

C08G 75/20 (2006.01) C08G 75/23 (2006.01)

Patent

CA 1183995

ABSTRACT OF THE DISCLOSURE: A versatile and useful electrophilic process for the production of aromatic polysulphones which does not require the provision of an aryl sulphonyl halide for the polymer- isation reaction. The aromatic polysulphones are prepared by the reaction under substantially anhydrous conditions in the presence of a fluoroalkane sulphonic acid, particularly trifluoromethane sulphonic acid or difluoromethane sulphonic acid, of the reactants selected from the following class: (a) an aromatic compound of specified formula (such as diphenyl ether or diphenyl) and a sulphonating agent; (b) an aryl monosulphonic acid of specified formula (such as diphenyl ether-4-sulphonic acid or diphenyl-4- sulphonic acid); and (c) an aryl disulphonic acid of specified formula (such as diphenyl ether-4,4'-disulphonic acid or diphenyl-4,4'- disulphonic acid) and an aromatic compound as defined in (a).

386685

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