| 摘要 |
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). |
