Title:
MASTERBATCH, RUBBER COMPOSITION, AND METHODS FOR PRODUCING MASTERBATCH AND RUBBER COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2017/110944
Kind Code:
A1
Abstract:
The present invention addresses the problem of obtaining a masterbatch in which cellulose nanofibers are uniformly dispersed within the system. According to the present invention, a masterbatch is produced by mixing carboxyl group-containing chemically modified cellulose nanofibers that have previously been thoroughly dispersed under acidic conditions with a rubber latex. Thus, the present invention provides a method for producing a masterbatch comprising (A) a step for introducing a carboxyl group into a cellulosic raw material to obtain a modified cellulose; (B) a step for fibrillating and dispersing the modified cellulose to obtain cellulose nanofibers; (C) a step for acidifying the cellulose nanofibers to obtain acid-form cellulose nanofibers; and (D) a step for mixing the acid-form cellulose nanofibers with a rubber component. A rubber composition exhibiting an excellent strength, e.g., tensile strength, can be provided by using the obtained masterbatch.
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Inventors:
ITO KOTARO (JP)
YASUKAWA YUSUKE (JP)
YASUKAWA YUSUKE (JP)
Application Number:
PCT/JP2016/088242
Publication Date:
June 29, 2017
Filing Date:
December 21, 2016
Export Citation:
Assignee:
JUJO PAPER CO LTD (JP)
International Classes:
C08J3/22; C08K7/02; C08L1/04; C08L21/00; C08B11/12
Domestic Patent References:
| WO2010134357A1 | 2010-11-25 | |||
| WO2013077354A1 | 2013-05-30 |
Foreign References:
| JP2014141637A | 2014-08-07 | |||
| JP2013018918A | 2013-01-31 | |||
| JP2010235687A | 2010-10-21 |
Other References:
AKIRA ISOGAI ET AL.: "Composite Materials of TEMPO- Oxidized Cellulose Single Nanofiber", JOURNAL OF THE SOCIETY OF RUBBER INDUSTRY, vol. 85, no. 12, 2012, pages 388 - 393, XP055394844
See also references of EP 3395865A4
See also references of EP 3395865A4
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
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