Abstract: The invention relates to preparation of synthetic macroporous ion-exchanaging materials by a ternary copolymerization of hydrophilic monomers containing non-ionogenous groups with monomers containing ionogenous groups and cross-linking monomers in an aqueous dispersion in the presence of inert components and suspension stabilizers. Hydroxyalkyl, oligoglycol and polyglycol esters and N-substituted or unsubstituted amides of acrylic and methacrylic acid are used as the hydrophilic monomers; compounds CH.sub.2 .dbd.C(R)COX, where R = H or CH.sub.3, X = --OR.sub.1 N(R.sub.2)R.sub.3, --OR.sub.1 SO.sub.3 H, --NHR.sub.1 N(R.sub.2)R.sub.3 or --HNR.sub.1 SO.sub.3 H, R.sub.1 = alkylene and R.sub.2 and R.sub.

Abstract: The invention relates to a method for preparation of ion exchangers from hydrophilic anion-exchanging gels based on acrylate or methacrylate copolymers prepared by copolymerization of amino-group-containing monomers, as aminoalkyl acrylates and methacrylates, aminoalkylacrylamides and aminoalkylmethacrylamides or on gels prepared by chemical bonding of amine groups to the hydrophilic matrix of acrylate or methacrylate copolymers. The method consists in alkylation or hydroxyalkylation of amine groups by alkylating agents, as alkyl halogenides, alkyl p-toluenesulfonates, alkyl sulfates, epoxides, etc. Alkylation with alkyldiaze compounds was used for transformation of the undesired carboxylic groups of the ion exchangers. Another modification consists in the reaction of halogenated acrylate or methacrylate gels with polyamines or oligomeric polyethyleneimines.

Abstract: The invention relates to a method for preparation of hydrophilic anion exchangers from gels based on crosslinked copolymers of hydroxyalkyl acrylates and methacrylates, oligo- and polyglycol monoacrylates and monomethacrylates, hydroxyalkylacrylamides or hydroxyalkylmethacrylamides with crosslinking comonomers containing 2 or more acrylcyl or methacryloyl groups in the molecule, as alkylene, oligo- and polyglycol diacrylates and dimethacrylates or divinylbenzene, which gels may have the homogeneous, heterogeneous or macroporous character.

Abstract: The invention relates to a method for preparation of hydrophilic macroporous ion exchangers of the amphoteric character which are suitable above all for isolation and separation of biological materials. The preparation consists in copolymerization of anionogenous monomers, as sulfoalkyl acrylates and methacrylates, sulfoalkylacrylamides, sulfoalkylmethacrylamides, acrylic and methacrylic acid, with cationogenous monomers, as aminoalkyl acrylates and methacrylates, aminoalkylacrylamides, aminoalkylmethacrylamides and their quaternary ammonium derivatives, and with crosslinking monomers, as alkylene or oligo and polyglycol diacrylates and dimethacrylates, bisacrylamides, bismethacrylamides and divlnylbenzene, in the water dispersion system containing inert organic compounds, as alcohols, acids, amines or nitriles.

Abstract: The invention relates to a method for preparation of hydrophilic cation exchangers by a chemical modification of crosslinked copolymeric gels containing reactive hydroxyl groups and based on hydroxyalkyl, oligoglycol or polyglycol acrylates and methacrylates and hydroxyalkylacrylamides or hydroxyalkylmethacrylamides. The modification is carried out in reactions of hydroxyl groups with halogenalkane acids and their derivatives, anhydrides and halides of dicarboxylic acids or carbodiimides. If the modification agent contains several reactive groups, the remaining functional groups after modification may be allowed to react with dicarboxylic, polycarboxylic, hydroxycarboxylic or aminocarboxylic acids, or phosphoric or sulfuric acid, halogenoepoxides, diepoxides or polyepoxides. The hydroxyl groups can be also modified by oxidation to carboxylic groups by common oxidants.