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    Home > Chemicals Industry > Chemical Technology > Guanidine-epichlorohydrin polymer and dicyandiamide-epichlorohydrin polymer

    Guanidine-epichlorohydrin polymer and dicyandiamide-epichlorohydrin polymer

    • Last Update: 2021-11-05
    • Source: Internet
    • Author: User
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    Guanidine-epichlorohydrin polymer

    [Preparation method] The polycondensation reaction of guanidine and epichlorohydrin produces a guanidine-epichlorohydrin polymer.


    9.


    Dicyandiamide-epichlorohydrin polymer

    [Preparation method] Synthesized with dicyandiamide and epichlorohydrin as raw materials, the specific reaction formula is:


    Add epichlorohydrin and 50% sodium hydroxide solution to the reactor equipped with condensing reflux device, then add dicyandiamide and a small amount of initiator, raise the temperature of the system to 75~85℃, and replenish after 2~5h reaction Alkaline amount, and continue to raise the temperature to 95~110℃, after reacting for 3~4h, cooling to room temperature, the amphiphilic dicyandiamide epichlorohydrin polymer is obtained.


     

     

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