The invention provides an albumin-fixed resin comprising a crosslinked water-insoluble resin and albumin chemically bound thereto, said water-insoluble resin being a crosslinked epoxy resin containing 1 to 30 milliequivalents of amino groups and 1 to 50 milliequivalents of hydroxyl groups per gram thereof, said albumin being bound ionically to the amino groups and by hydrogen bonding to the hydroxyl groups, and the amount of said albumin fixed being at least 25% by weight based on the epoxy resin.
Also provided is a process for producing the albumin-fixed resin, which process comprises
(1) (a) subjecting a polyepoxy compound containing at least two epoxy groups in the molecule, and a polyamine compound containing at least two primary and/or secondary amino groups in the molecule to addition reaction in an inert medium to produce a fully crosslinked resin, or (b) subjecting said polyepoxy and polyamine compounds to addition reaction to produce an incompletely crosslinked pre-polymer, and then reacting the pre-polymer with at least one organic polyisocyanate, organic polyisothiocyanate or organic polycarboxylic acid halide to crosslink the pre-polymer fully, and
(2) contacting the resulting crosslinked epoxy resin containing 1 to 30 milliequivalents of amino groups and 1 to 50 milliequivalents of hydroxyl groups per gram thereof intimately with an aqueous solution containing albymin, optionally after partially neutralizing the amino groups of the epoxy resin.
The albumin-fixed resin is useful for removing noxious substances capable of binding to albumin, such as bilirubin, from the blood of a warm-blooded animal.
本发明提供了一种白蛋白固定
树脂,包括交联的
水不溶性
树脂和与之
化学结合的白蛋白,所述
水不溶性
树脂是一种交联环
氧树脂,每克含有 1 至 30 毫当量的
氨基和 1 至 50 毫当量的羟基,所述白蛋白通过离子键与
氨基结合,并通过
氢键与羟基结合,所述固定白蛋白的量至少为环
氧树脂重量的 25%。
还提供了一种生产白蛋白固定
树脂的工艺,该工艺包括
(1) (a) 将分子中含有至少两个环
氧基团的聚环
氧化合物和分子中含有至少两个伯
氨基 和/或仲
氨基的聚胺化合物在惰性介质中进行加成反应,生成全交联
树脂、或 (b) 使所述聚环
氧化合物和聚胺化合物进行加成反应,生成不完全交联的预聚 物,然后使该预聚物与至少一种有机多
异氰酸酯、有机多异
硫氰酸酯或有 机多
羧酸卤化物反应,使该预聚物完全交联,以及
(2) 将得到的每克含有 1 至 30 毫当量
氨基和 1 至 50 毫当量羟基的交联环
氧树脂 与含有白胺的
水溶液紧密接触,可选择在部分中和环
氧树脂的
氨基之后进 行。
白蛋白固定
树脂可用于去除温血动物血液中能与白蛋白结合的有害物质,如
胆红素。