Title:
METHOD FOR PRODUCING CARBOXYMETHYL CELLULOSE
Document Type and Number:
WIPO Patent Application WO/2012/008314
Kind Code:
A1
Abstract:
Disclosed is a method for producing carboxymethyl cellulose, in which after starting material pulp is subjected to a crushing treatment using a crusher, cellulose in the material obtained by the crushing treatment is reacted with a monohaloacetic acid or a salt thereof and an alkaline agent at 40 to 100ºC, the method comprising a step of mixing the monohaloacetic acid or a salt thereof and/or the alkaline agent with the starting material pulp before or during the crushing treatment of the starting material pulp. According to this method, carboxymethyl cellulose, the aqueous solution of which has a high viscosity, can be efficiently produced.
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Inventors:
SAKAKIBARA MAKOTO (JP)
Application Number:
PCT/JP2011/065089
Publication Date:
January 19, 2012
Filing Date:
June 30, 2011
Export Citation:
Assignee:
KAO CORP (JP)
SAKAKIBARA MAKOTO (JP)
SAKAKIBARA MAKOTO (JP)
International Classes:
C08B11/12
Foreign References:
JPH0965890A | 1997-03-11 | |||
JPH09188703A | 1997-07-22 | |||
JPH0172175C | ||||
JP2004004941B1 | ||||
JPS327349B1 | ||||
JPS3516597B1 | ||||
JPS51116889A | 1976-10-14 | |||
JPS357597B1 | ||||
JPS5731901A | 1982-02-20 | |||
JPS317047B1 | ||||
JPS50100181A | 1975-08-08 | |||
JPS5324415A | 1978-03-07 |
Attorney, Agent or Firm:
OHTANI, Tamotsu et al. (JP)
Tamotsu Otani (JP)
Tamotsu Otani (JP)
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Claims: