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

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United States of America Patent

PATENT NO 10676615
APP PUB NO 20180037737A1
SERIAL NO

15556220

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Abstract

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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 (SPcnf) of the chemically modified CNFs (A) to the solubility parameter (SPpol) of the thermoplastic resin (B), SPcnf/SPpol, 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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Patent Owner(s)

Patent OwnerAddress
NIPPON PAPER INDUSTRIES CO LTDTOKYO TOKYO METROPOLIS
KYOTO UNIVERSITY36-1 YOSHIDA-HONMACHI SAKYO-KU KYOTO-SHI KYOTO 606-8501
KYOTO MUNICIPAL INSTITUTE OF INDUSTRIAL TECHNOLOGY AND CULTURE91 CHUDOJI AWATACHO SHIMOGYO-KU KYOTO-SHI KYOTO 600-8815

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ito, Akihiro Kyoto, JP 139 1028
Kitagawa, Kazuo Kyoto, JP 22 185
Nakatsubo, Fumiaki Kyoto, JP 7 107
Semba, Takeshi Kyoto, JP 5 43
Uesaka, Takahiro Kyoto, JP 5 85
Yano, Hiroyuki Kyoto, JP 197 3220

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