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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 9951192 B1

PDFFull Text
Date of Patent:
Apr. 24, 2018

Filed:

Sep. 11, 2014

Cellulose nanofibers, method for producing same, aqueous dispersion using cellulose nanofibers, and fiber-reinforced composite material

Applicant:

Nitto Boseki Co., Ltd., Fukushima-Shi, Fukushima, JP;

Inventors:

Masanori Wada, Fukushima, JP;

Akira Yoshimura, Fukushima, JP;

Yoshihiko Amano, Nagano, JP;

Assignee:

Nitto Boseki Co., Ltd., Fukushima, JP;

Attorneys:

Carrier Blackman & Associates, P.C.

Joseph P. Carrier

Anne G. Sabourin

Primary Examiner:

Ling Siu Choi

Assistant Examiner:

Ronald Grinsted

Int. Cl.
CPC ...
C08B 15/00 (2006.01); C08J 5/04 (2006.01); C08J 3/215 (2006.01); C08J 5/18 (2006.01); D21H 11/18 (2006.01); D21H 15/02 (2006.01);
U.S. Cl.
CPC ...
C08J 5/045 (2013.01); C08B 15/00 (2013.01); C08J 3/215 (2013.01); C08J 5/18 (2013.01); D21H 11/18 (2013.01); D21H 15/02 (2013.01); C08J 2329/04 (2013.01);
Abstract

The present invention relates to cellulose nanofibers that have good dispersibility in water and can be contained in a water-soluble polymer at high concentration, and to a method for obtaining the cellulose nanofibers. The present invention further relates to a fiber reinforced composite material using the cellulose nanofibers. Cellulose nanofibers having an average degree of polymerization of 100 or more and 800 or less and an aspect ratio of 150 or more and 2000 or less are produced by subjecting unmodified cellulose to an enzyme and/or acid treatment, and to a mechanical shearing treatment. The cellulose nanofibers have good dispersibility and can be dispersed in a water-soluble polymer at high concentration, and therefore a fiber reinforced composite material having high strength can be obtained.

Find Patent Forward Citations

Wada, Masanori. (2018). Cellulose nanofibers, method for producing same, aqueous dispersion using cellulose nanofibers, and fiber-reinforced composite material (U.S. Patent No. 9951192). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9951192

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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