Fluorocarbon-free and bio-based oil and water barrier materials comprising polyelectrolyte complexes
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United States of America
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Dec 10, 2024
Grant Date -
Nov 10, 2022
app pub date -
Oct 20, 2020
filing date -
Oct 20, 2020
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Abstract
The present invention relates generally to compositions comprising polyelectrolytes complexes (PECs) of anionic and cationic biopolymers capable of forming barriers on fiber based materials. Also disclosed is a fibre based material with a barrier coating against oil and water, wherein the material is provided with a barrier from at least two layers formed from at least one composition comprising a polyelectrolyte complex (PEC) of a cationic biopolymer and an anionic biopolymer, The two layers result in improvements in both oil resistance and water resistance compared to the same material provided with a single layer of said at least one composition.
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