申请人:Ceskoslovenska akademie ved
公开号:US04340483A1
公开(公告)日:1982-07-20
The invention relates to the polar polymeric sorbent applicable in gas and liquid chromatography, which is based on glycidyl esters. The sorbent is formed by the macroporous copolymer containing 3-70% of polymerized monomeric units with epoxy groups, e.g. glycidyl methacrylate or glycidyl acrylate units, and 97-30% of a crosslinking agent, e.g. alkylene dimethacrylate, alkylene diacrylate, hydroxyalkylene dimethacrylate, hydroxyalkylene diacrylate (alkylene containing 1-6 C atoms), or divinylbenzene. The sorbent may further contain up to 30% of polymerized monomeric units containing nitrile groups, e.g. acrylonitrile and methacrylonitrile units. The polarity of sorbent can be further modified, according to the invention, by the reaction with various nucleophilic agents, e.g. water, alcohols, carboxylic acids and their derivatives, ammonia, amines, thioalcohols, acrylonitrile. The sorbent is thermally and mechanically stable and was used for the gas-chromatographic and liquid-chromatographic separation of complex mixtures of compounds. Its polarity was expressed in terms of modified Rohrschneider indices.
本发明涉及一种基于环氧酯的极性高分子吸附剂,适用于气体和液体色谱分析。该吸附剂由大孔共聚物形成,其中包含3-70%的聚合单体单元,具有环氧基,例如环氧丙基甲基丙烯酸酯或环氧丙基丙烯酸酯单元,以及97-30%的交联剂,例如烷基二甲基丙烯酸酯,烷基二丙烯酸酯,羟基烷基二甲基丙烯酸酯,羟基烷基二丙烯酸酯(烷基含1-6个碳原子),或二乙烯基苯。该吸附剂还可以包含高达30%的聚合单体单元,其中包含腈基,例如丙烯腈和甲基丙烯腈单元。根据本发明,可以通过与各种亲核试剂(例如水,醇,羧酸及其衍生物,氨,胺,硫醇,丙烯腈)的反应来进一步改变吸附剂的极性。该吸附剂在热力学和机械稳定性方面表现出色,并用于复杂混合物的气相色谱和液相色谱分离。其极性以改进的Rohrschneider指数表示。