| 摘要 |
<p>The invention relates to the conditioning and use of ion exchange resins for the production of bisphenols. The invention, in particular, relates to the conditioning of monodispersed cationic and anionic exchangers and the use thereof as catalysts, in particular, as catalysts for condensation reactions. The conditioning is characterised, in particular, in that a) water wet mono dispersed ion exchange resin is suspended in demineralised water, b) the mono dispersed ion exchange resin is subjected to a discontinuous or continuous wash, with acid free demineralised water, until a constant conductivity is achieved, c) after the last wash, the demineralised water is let off and the mono dispersed ion exchange resin mixed with the acid free OH component, d) the resulting mixture is dried, in a continuously operated recycling apparatus, fitted with a distillation unit and e) finally, the suspension of mono dispersed ion exchange resin and OH component is transferred to a reaction flask.</p> |
