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以阳离子交换剂对H~+/Na~+交换容量比普通交换剂交换容量大小评价了磺化丹宁-酚-甲醛共聚物(Ⅰ)。这种交联剂(Ⅰ)在酸和盐溶液中以及以干燥Na型储存8年以后都是稳定的。个别树脂的交换容量甚至在交换20次以后也没有变化。
The sulfonated tannin - phenol - formaldehyde copolymer (Ⅰ) was evaluated by the exchange capacity of H ~ + / Na ~ + exchangers compared with the exchange capacity of common exchangers. This crosslinker (I) is stable both in acid and salt solutions and after 8 years of storage in dry Na form. The exchange capacity of individual resins did not change even after 20 exchanges.