Process for producing microfibrillated cellulose

Marianna Vehviläinen (Inventor), Taina Helena Kamppuri (Inventor), Pertti Nousiainen (Inventor), Isto Heiskanen (Inventor), Kaj Backfolk (Inventor)

    Research output: Patent


    A process for treating cellulosic fibers comprises mechanically pre-treating the fibers followed by treating the fibers with an enzyme and thereafter mixing the fibers with a solution comprising an alkali metal hydroxide followed by mechanically treating the fibers to form microfibrillated cellulose. In this way it is possible to produce microfibrillated cellulose (MFC) in an improved and energy efficient way.
    Original languageEnglish
    Patent numberUS8647468 B2
    IPCUnited States patent
    Priority date2/07/10
    Publication statusPublished - 11 Feb 2014
    Publication typeH1 Granted patent


    • Microfibrillated cellulose


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