| 摘要 |
Stable boron resins of high selective absorbent power and their production process. Said boron resins consist of a polyacrylic matrix functionalised with quaternary ammonium groups, an epoxy group and phenylboric groups in accordance with general formula <IMG> in which ? , R, R1, R2, R3, R4 and X- are as defined in the text. The resins are prepared by reacting an amine resin with an epihalohydrin and condensing the reaction product with a suitable boroxin. The resins of formula (I) can be used for separating sugars, in particular for purifying lactulose. They have greater selective power than currently known boron resins.
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