TRANSPARENT BASE AND METHOD FOR PRODUCING SAME

Title:

TRANSPARENT BASE AND METHOD FOR PRODUCING SAME

Document Type and Number:

WIPO Patent Application WO/2012/032931

Kind Code:

A1

Abstract:

[Problem] To provide a molded body which uses a material effectively utilizing a natural material and has low linear expansion coefficient, high light transmittance and adequate moisture permeability. Specifically, to provide a transparent base which has low linear expansion coefficient, high light transmittance and adequate moisture permeability. [Solution] A transparent base which contains at least an oxidized polysaccharide and has a linear expansion coefficient of 50 ppm/˚C or less for the temperature range from 30˚C to 150˚C (inclusive) and a light transmittance at 660 nm of 70% or more. A method for producing the transparent base comprises, in the following order: an oxidation step wherein a cellulose is oxidized in water by the action of a co-oxidizing agent, while using 2,2,6,6-tetramethyl-1-piperidine-N-oxyl or a derivative thereof as a catalyst; a fibrillation step wherein cellulose fibers are formed by fibrillating the oxidized cellulose in water; and a base formation step wherein a transparent base is formed using a cellulose dispersion liquid that contains the cellulose fibers.

Inventors:

SHIMIZU KOSUKE (JP)
OOMORI YUMIKO (JP)
TANI MIZUHIRO (JP)
SAIKI AKIKO (JP)

Application Number:

PCT/JP2011/069009

Publication Date:

March 15, 2012

Filing Date:

August 24, 2011

Export Citation:

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Assignee:

TOPPAN PRINTING CO LTD (JP)
SHIMIZU KOSUKE (JP)
OOMORI YUMIKO (JP)
TANI MIZUHIRO (JP)
SAIKI AKIKO (JP)

International Classes:

C08J5/18; C08B15/02; C08L1/08; G02B5/30

Domestic Patent References:

WO2010055839A1

2010-05-20

Foreign References:

JP2010168572A	2010-08-05
JP2010043144A	2010-02-25
JP2003512540A	2003-04-02
JP2010116477A	2010-05-27

Other References: