| 摘要 |
1. Thiazoline-modified ion exchangers, characterized in that known acidic ion exchanger resins having total capacities of acid functions in water-moist form, with a water content of approximately 75 to 85% by weight, in the range from 0.7 to 2.1 mval/ml ion exchanger or having total capacities of acid functions in the range from 3.5 to 5 mval, based on 1 g dry matter, of ion exchanger are dried, subsequently washed with the phenol to be used for bisphenol production and then neutralized with at least 0.3 mol - per mol acid function of the ion exchanger - of thiazolines corresponding to formula (I) see diagramm : EP0305774,P5,F2 in which R, R**1 , R**2 , R**3 and R**4 independently of one another represent hydrogen, a C1-6 alkyl, a C5-10 cycloalkyl or a C6-14 aryl radical, at a temperature above the melting point of that phenol. |
