Bio-based PEC compositions as binders for fiber based materials, textiles, woven and nonwoven materials

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United States of America

PATENT NO 11319673
APP PUB NO 20190226150A1
SERIAL NO

16282514

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Abstract

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The present invention relates to a bio-based polyelectrolyte complex (PEC) composition suitable as a binder for fiber based materials, textiles, woven and nonwoven materials. The PEC composition comprises cationic biopolymer, anionic biopolymer acid and a polymer, and is further characterized in that

    the net charge of the PEC is cationic,the charge ratio of the anionic polymer and the cationic polymer is ≤1,the cationic biopolymer is chitosan, wherein the concentration of cation is 0.005-30%,the anionic biopolymer is polyanions derived from nature,the acid is a Brønsted acid and/or a Lewis acid, wherein the Brønsted acid is selected from any organic and/or inorganic acids, wherein the Lewis acid is selected from any cationic mono- or multivalent atom,the weight ratio between cation and anion is 1:0.1 to 1:20,the weight ratio between the cation and acid is 1:0.01 to 1:30,chitosan has a degree of deacetylation being 66-100%, andthe pH is less than 7.

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  • ORGANOCLICK AB

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Aydin, Juhanes Södertälje, SE 9 5
Wennman, Maria Solna, SE 5 1
Zhang, Yujia Täby, SE 9 11

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