MOLDABLE CELLULOSE FIBER BASED MATERIAL

WIPO Patent Application WO/2021/001779

A8

The present invention relates to a method for manufacturing modified cellulose fibers for a moidable cellulose fiber based material, said method comprising: a) providing a chemical or semi-chemical wood pulp comprising cellulose fibers, and optionally subjecting the pulp to alkaline extraction to obtain an alkaline extracted pulp; and b) subjecting the pulp or the alkaline extracted pulp of step a) to a chemical treatment with an alkaline solution and/or an organic solvent to obtain a treated pulp or treated alkaline extracted pulp comprising modified cellulose fibers for a moidable cellulose fiber based material. The invention further relates to a moidable cellulose fiber based material comprising at least 70% by dry weight of modified cellulose fibers obtainable by the method.

WO/1999/002693	MICROBIAL SWOLLENIN PROTEIN; DNA SEQUENCES ENCODING SUCH SWOLLENINS AND METHOD OF PRODUCING SUCH SWOLLENINS
WO/2012/052617	PROCESSING OF WOOD FIBRE FRACTION
WO/2005/080678	MODIFYING CELLULOSE FIBRES BY USING AMPHOTERIC CELLULOSE DERIVATIVE

SETÄLÄ HARRI (FI)
KAMMIOVIRTA KARI (FI)
LAINE CHRISTIANE (FI)
HARLIN ALI (FI)
HJELT TUOMO (FI)
KOSKELA HANNA (FI)
KETOJA JUKKA (FI)

PCT/IB2020/056250

August 19, 2021

July 02, 2020

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STORA ENSO OYJ (FI)

D21H11/20; D21H11/02; D21H11/16; D21H15/04; B29C51/08; B31B50/59; B65B43/08; C08B1/08; C08L1/02

FORSBERG, Karin (SE)

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