Method for improving the water tolerance of bio-based CNF-films

Jari Vartiainen (Inventor), Tero Malm (Inventor), Vesa Kunnari (Inventor), Tuomas Hänninen (Inventor), Tekla Tammelin (Inventor), Soledad Peresin (Inventor), Monika Österberg (Inventor), Leena-Sisko Johansson (Inventor)

    Research output: PatentPatent


    The present invention relates to a continuous roll-to-roll process for improving the water tolerance of bio-based polymers, in particular cellulose nanofibrils (CNF) films. Furthermore, the invention provides a method, which combines surface modification/functionalization for improving water stability and wet strength, UV/Ozone treatment, corona treatment or plasma activation for purifying and activating the surface and thus increasing the reaction efficiency, and further hydrophobization of the surface of CNF film.

    Patent family as of 30.11.2021
    DE602015030549 D1 20190606 DE201560030549T 20151130      
    EP3224305 A1 20171004 EP20150862244 20151130      
    EP3224305 A4 20180606 EP20150862244 20151130      
    EP3224305 B1 20190515 EP20150862244 20151130      
    ES2739478 T3 20200131 ES20150862244T 20151130      
    FI126761 B 20170515 FI20140006044 20141128     
    A 20160529 FI20140006044 20141128      
    US10786829 BB 20200929 US20150528522 20151130      
    US2017266693 AA 20170921 US20150528522 20151130      
    WO16083674 A1 20160602 WO2015FI50835 20151130

    Link to currentpatent family on right 

    Original languageEnglish
    Patent numberWO2016083674 A1
    IPCC23C 16/455,C08J5/18
    Priority date28/11/14
    Publication statusPublished - 2 Jun 2016
    MoE publication typeH1 Granted patent


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