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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 10676615 B1

PDFFull Text
Date of Patent:
Jun. 09, 2020

Filed:

Mar. 17, 2016

Fiber-reinforced resin composition comprising chemically modified cellulose nanofibers and thermoplastic resin

Applicants:

Kyoto University, Kyoto, JP;

Kyoto Municipal Institute of Industrial Technology and Culture, Kyoto, JP;

Nippon Paper Industries Co., Ltd., Tokyo, JP;

Inventors:

Takeshi Semba, Kyoto, JP;

Akihiro Ito, Kyoto, JP;

Takahiro Uesaka, Kyoto, JP;

Kazuo Kitagawa, Kyoto, JP;

Fumiaki Nakatsubo, Kyoto, JP;

Hiroyuki Yano, Kyoto, JP;

Assignees:

Kyoto University, Kyoto, JP;

KYOTO MUNICIPAL INSTITUTE OF INDUSTRIAL TECHNOLOGY AND CULTURE, Kyoto, JP;

NIPPON PAPER INDUSTRIES CO., LTD., Tokyo, JP;

Attorney:

Cesari and McKenna, LLP

Primary Examiner:

Nicholas E Hill

Int. Cl.
CPC ...
C08L 77/02 (2006.01); C08L 1/08 (2006.01); C08L 101/00 (2006.01); C08L 23/12 (2006.01); C08L 67/04 (2006.01); C08J 5/04 (2006.01); C08B 3/06 (2006.01); C08B 3/20 (2006.01); C08L 23/06 (2006.01); C08L 25/06 (2006.01); C08L 51/06 (2006.01); C08L 55/02 (2006.01); C08L 59/02 (2006.01); B82Y 30/00 (2011.01);
U.S. Cl.
CPC ...
C08L 77/02 (2013.01); C08B 3/06 (2013.01); C08B 3/20 (2013.01); C08J 5/045 (2013.01); C08L 1/08 (2013.01); C08L 23/06 (2013.01); C08L 23/12 (2013.01); C08L 25/06 (2013.01); C08L 51/06 (2013.01); C08L 55/02 (2013.01); C08L 59/02 (2013.01); C08L 67/04 (2013.01); C08L 101/00 (2013.01); B82Y 30/00 (2013.01); C08L 2205/06 (2013.01); C08L 2205/16 (2013.01);
Abstract

An object of the present invention is to provide a fiber-reinforced resin composition in which fibers with good dispersibility and a resin in which the fibers are easily dispersed have been suitably composited; and a method for producing the fiber-reinforced resin composition. Specifically, the object is to provide a fiber-reinforced resin composition that comprises chemically modified CNFs and a thermoplastic resin, and that has improved physical properties due to the suitable compositing of the fibers with the resin; and a method for producing the fiber-reinforced resin composition. The fiber-reinforced resin composition comprises chemically modified CNFs (A) and a thermoplastic resin (B), wherein the chemically modified CNFs and the thermoplastic resin satisfy the following conditions: (a) the ratio R of the solubility parameter (SP) of the chemically modified CNFs (A) to the solubility parameter (SP) of the thermoplastic resin (B), SP/SP, is in the range of 0.87 to 1.88; and (b) the chemically modified CNFs (A) have a degree of crystallinity of 42.7% or higher.

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