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Patent Searching and Data


Title:
METHOD FOR PRODUCING CARBOXYMETHYL CELLULOSE
Document Type and Number:
WIPO Patent Application WO/2019/225499
Kind Code:
A1
Abstract:
A novel method is provided by which carboxymethyl cellulose less apt to form lumps in water can be easily produced. When producing carboxymethyl cellulose having a degree of carboxymethyl substitution of 0.50 or higher, mercerization is conduced in a medium consisting mainly of water and thereafter carboxymethylation is conducted in a mixed medium comprising water and an organic solvent.

Inventors:
INOUE KAZUHIKO (JP)
NISHIGAYA KASUMI (JP)
Application Number:
PCT/JP2019/019682
Publication Date:
November 28, 2019
Filing Date:
May 17, 2019
Export Citation:
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Assignee:
JUJO PAPER CO LTD (JP)
International Classes:
C08B11/12
Domestic Patent References:
WO2019111939A12019-06-13
WO2019111928A12019-06-13
WO2019111934A12019-06-13
WO2019111941A12019-06-13
WO2012150701A12012-11-08
Foreign References:
JP2013159620A2013-08-19
JPH09176201A1997-07-08
Other References:
MARTINEZ, C. M. F. ET AL.: "Absorbent properties of carboxymethylated ethanol/water pulps of pith from sugar cane bagasse", POLIMEROS: CIENCIA E TECNOLOGIA, vol. 7, no. 1, 1997, pages 48 - 57, XP055654896
Attorney, Agent or Firm:
ONO, Shinjiro et al. (JP)
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