Method for preparation of ion exchangers by alkylation and hydroxyalkylation of polymeric hydrophylic anion exchangers
CA 1048692 A · Owner: Ceskoslovenska Akademie Ved · Inventors: Coupek, Jiri; Strop, Petr; Mikes, Otakar
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The present 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 selected, from a group comprising aminoalkyl acrylates and methacrylates aminoalkylacrylamides and aminoalkylmethacrylamides or on gels prepared by chemical bonding of amine groups to the hydrophylic matrix of acrylate or methacrylate copolymers. The method consists in alkylation or hydroxyalkylation of amine groups by alkylating agents, as alkyl halogenides alkyl p-toluenesul-, fonates, alkylsulfates and epoxides. Alkylation with alkyldiazo compounds was used for …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted February 13, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 13, 1996.
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