Method of preparation of ion exchangers by alkylation and hydrox

Details Method of preparation of ion exchangers by alkylation and hydrox Method of preparation of ion exchangers by alkylation and hydrox

1975-02-07

1978-09-05

Schofer, Joseph L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Ion-exchange polymer or process of preparing

526 23, 526 42, 526 30, 526 55, 526 524, 526304, 526307, 521 31, B01D 1504, C08J 520, B01D 1508

Patent

active

041118596

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. These reactions lead to ion exchangers with modified chemical nature, dissociation constant, exchange capacity, degree of hydrophility, distance of the ionogenous groups from the surface of the matrix or the character of microsurroundings. The resulting ion-exchanging materials are suitable above all for the sorption and separation of biopolymers.

REFERENCES:
patent: 3220960 (1965-11-01), Wichterle
patent: 3277025 (1966-10-01), Glodin et al.
patent: 3582505 (1971-06-01), Jong
patent: 3629230 (1971-12-01), Soderquist
patent: 3634394 (1972-01-01), Andreossen
patent: 3699089 (1972-10-01), Wichterle
patent: 3836512 (1974-09-01), Chu
patent: 3850892 (1974-11-01), Shen et al.

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