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    • 1. 发明申请
    • STYRENE/DIVINYLBENZENE COPOLYMERS FUNCTIONALIZED WITH A HIGH DEGREE OF AMINOMETHYL GROUPS
    • 具有高度氨基甲酸基官能团的苯乙烯/二苯乙烯共聚物
    • WO0050465A3
    • 2000-11-30
    • PCT/BR0000023
    • 2000-02-23
    • CONSELHO NACIONAL CNPQRYUICHI NAKAIE CLOVISCILLI EDUARDO MAFFUDJABILUT GUITA NICOLAEWSKIHADDAD CARVALHO REGINA SIQUEIR
    • RYUICHI NAKAIE CLOVISCILLI EDUARDO MAFFUDJABILUT GUITA NICOLAEWSKIHADDAD CARVALHO REGINA SIQUEIR
    • B01J41/12C08F20060101C08F8/30C08F8/32
    • B01J41/12C08F8/30C08F8/32
    • Resins containing apolar styrene-divinylbenzenc-type matrices may solvate in aqueous medium, depending on the amount of positively charged ammonium groups incorporated in its structure. Experiments with a resin containing 4.9 mmol/g aminomethyl groups and denominated aminomethyl-resin (hereafter referred as to EPM-1) showed that this resin presents a good solvation in polar organic solvents and even in water. Based on a special strategy already developed for estimation of pKa of ionizable groups of the resin, it was found a value around 5,5 for the EPM-1 amine group. As model of anionic solutes for chromatographic assays with EPM-1, differently negatively charged peptide fragments were synthesized and tested in chromatographic purification thus demonstrating that EPM-1 can be considered an alternative anion exchange resin also for other anionic solutes. Besides, for containing easily reactive primary amine groups in its structure, this resin can be also precursor for other resins with different chromatographic potentialities. In the same trend, chemical variation involving the divinylbenzene degree of crosslinking of this copolymer may affect its solvation characteristics, porosity, etc., hence modifying the use of this polymeric material.
    • 含有非极性苯乙烯 - 二乙烯基苯类型基质的树脂可以在水性介质中溶解,这取决于结合在其结构中的带正电荷的铵基团的量。 含有4.9 mmol / g氨基甲基和氨基甲基树脂(以下称为EPM-1)的树脂的实验表明,该树脂在极性有机溶剂中甚至在水中具有良好的溶剂化性。 基于已经开发用于估计树脂可离子化基团的pKa的特殊策略,EPM-1胺基的值约为5,5。 作为使用EPM-1进行色谱分析的阴离子溶质模型,合成了不同的带负电荷的肽片段,并在色谱纯化中进行了测试,证明了EPM-1也可以被认为是其他阴离子溶质的替代阴离子交换树脂。 此外,为了在其结构中含有容易反应的伯胺基,该树脂也可以是具有不同色谱势的其它树脂的前体。 在同样的趋势中,涉及该共聚物的二乙烯基苯交联度的化学变化可能影响其溶剂化特性,孔隙率等,因此改变了该聚合物材料的用途。