| 摘要 |
The adsorbent consists of a solid phase, completely or partially penetrated by or surface-coated with a hydrophilic molecular polymer netting to which has been bound substituents or cross bridges having chain sequences of the structure X-CH2-CH2-SO2-CH2-CH2-S-Y where X is ether oxygen, a thioether sulfur atom or a nitrogen atom and Y is a substituted or unsubstituted alkyl, aryl or heteroaromatic group. The solid phase consists of particles with a diameter of less than 1 mm and the molecular polymer netting consisting of a cross-linked polyhydroxy polymer such as a polysaccharide, preferably a polygalactane such as agar or agarose or a cross-linked polyamide, e.g. polyacryl amide. Y can be hydroxy alkyl or mercapto alkyl, or phenyl alkyl or phenyl substituted with halogen or nitro groups. The adsorbent is prepared by first converting in a known manner a hydrophilic polymer containing OH and/or CONH2 groups to a vinylsulfone substituted polymer for subsequent contact in alkali solution, with or without organic solvent, with an organic thiol compound. The adsorbent can be used for the fractionation of biopolymers such as nucleic acids, nucleotides, proteins and polypeptides, and has been found particularly well suited for the fractionation of serum proteins. |
