METHOD FOR PRODUCING CHEMICALLY MODIFIED CELLULOSE FIBERS

Title:

METHOD FOR PRODUCING CHEMICALLY MODIFIED CELLULOSE FIBERS

Document Type and Number:

WIPO Patent Application WO/2019/073810

Kind Code:

A1

Abstract:

Provided is a method for producing chemically modified cellulose fibers, which is capable of performing fibrillation at the same time as a sulfuric acid esterification reaction. A method for producing chemically modified cellulose fibers, which comprises: a step (a) wherein cellulose fibers are treated with sulfamic acid, thereby causing the sulfamic acid and cellulose microfibers that constitute the cellulose fibers to react with each other, thereby substituting some of hydroxyl groups of the cellulose with substituents that are represented by structural formula (1) (wherein M represents a monovalent to trivalent cation); and a step (b) wherein fibrillation is performed at the same time as the step (a).

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Inventors:

KITANO YUKA (JP)
HASHIMOTO MASAYUKI (JP)

Application Number:

PCT/JP2018/036172

Publication Date:

April 18, 2019

Filing Date:

September 28, 2018

Export Citation:

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Assignee:

DAI ICHI KOGYO SEIYAKU CO LTD (JP)

International Classes:

C08B5/14; D01F2/00; A61K8/73

Foreign References:

JP2007092034A	2007-04-12
JP2012526156A	2012-10-25
US2511229A	1950-06-13
CN102863544A	2013-01-09
JPS4730167B1
JP2007092034A	2007-04-12
JP2012526156W

Other References: