The invention relates to the macroporous absorbent resin special for extracting cephalosporin C, and process for the preparation is disclosed. Specific surface area of such kinds of adsorbent resins is around 1000-2000m2/g, pore volume is 1.5-2.5ml/g. The preparation method as follows: according to the suspension polymerization to prepare the macroporous copolymer matrix, The mixture of monomer, porogenic agent, initiator of polymerization was put into solution of dissolving some dispersant, then the system was heated to 60-100°C,and maintained for 5-10hours, then the crosslinked macroporous copolymer matrix is obtained. With the existence of inert medium, the above described macroporous copolymer matrix reacted with the Lewis acid as the catalyst at 50-120 °C though the alkylate reaction between the aromatic nucleus. The macroporous absorbent resin special for extracting cephalosporin C descried above possess advantages of high adsorption capacity, good selectivity for target substance, desorption and regeneration easily, and so the high purity of cephalosporin C can be obtained.
本发明涉及提取
头孢菌素 C 的专用大孔吸附
树脂,并公开了其制备工艺。该类吸附
树脂的比表面积约为1000-2000m2/g,孔隙率为1.5-2.5ml/g。制备方法如下:按照悬浮聚合法制备大孔共聚物基体,将单体、致孔剂、聚合
引发剂的混合物放入溶解了一些分散剂的溶液中,然后将体系加热到 60-100℃,并保持 5-10 小时,就得到了交联的大孔共聚物基体。在惰性介质存在的条件下,上述大孔共聚基质与
路易斯酸作为催化剂在 50-120 ℃下发生芳香核之间的烷基化反应。上述提取
头孢菌素 C 的专用大孔吸附
树脂具有吸附容量大、对目标物质的选择性好、易解吸和再生等优点,可获得高纯度的
头孢菌素 C。