Fine cellulose fiber and production method for same

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United States of America Patent

PATENT NO 11015291
APP PUB NO 20190093285A1
SERIAL NO

16085172

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Abstract

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Provided is a method of producing fine cellulose fibers that are nanosized, that have a high crystallinity degree, and that are less vulnerable to fiber shape damage, the method including impregnating cellulose with a fibrillation solution to fibrillate the cellulose without mechanical crushing, and modifying the cellulose. The method of producing cellulose microfibrils of the present invention includes impregnating cellulose with a fibrillation solution containing a carboxylic acid vinyl ester or an aldehyde and an aprotic solvent having a donor number of 26 or more to fibrillate the cellulose. The aldehyde is at least one kind of aldehyde selected from the group consisting of an aldehyde represented by the following formula (1), paraformaldehyde, cinnamaldehyde, perillaldehyde, vanillin, and glyoxal:

description='In-line Formulae' end='lead'R1—CHO  (1)description='In-line Formulae' end='tail'

where R1 represents a hydrogen atom, an alkyl group having 1 to 16 carbon atoms, an alkenyl group, a cycloalkyl group, or an aryl group.

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Patent Owner(s)

Patent OwnerAddress
FUTAMURA KAGAKU KABUSHIKI KAISHA29-16 MEIEKI 2-CHOME NAKAMURA-KU NAGOYA-SHI AICHI

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hori, Masanori Kyoto, JP 35 1092
Lin, Lianzhen Kyoto, JP 11 60
Maruta, Ayako Kyoto, JP 9 52

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