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

USPTO Patent Application US 2017/0266693 A1
Application Date: Sep. 21st, 2017

ABSTRACT

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...
Assignee(s):
Application Number:
15/528,522
International Classification:
B05D 3/14 (20060101); C08J 7/12 (20060101); C08J 7/06 (20060101); C23C 18/12 (20060101); C23C 16/455 (20060101); C23C 16/02 (20060101); B05D 1/30 (20060101); C08J 5/18 (20060101); C23C 16/40 (20060101)
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CLAIMS

What is claimed is:

1. A method of improving water tolerance of a cellulose nanofibril (CNF) film having two opposite surfaces, wherein the method comprises: protecting both surfaces of the CNF film from moisture and includes the steps of: a) preparing a CNF suspension and modifying the suspension by adding polymers containing charged, hydrophobic or...

DESCRIPTION

FIELD OF THE INVENTION

The present invention relates to a new concept for improving the water tolerance of bio-based cellulose nanofibrils (CNF) films. More precisely, the present invention relates to a roll-to-roll process, which combines CNF film production, water stability and wet strength improvement and further surface hydrophobization of such films. Further, the invention...
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