Title:
METHOD FOR PREPARING ULTRA-LOW VISCOSITY HYDROXYALKYL CELLULOSE BY MEANS OF PARTIAL NEUTRALIZATION
Document Type and Number:
WIPO Patent Application WO/2014/092311
Kind Code:
A1
Abstract:
The present invention relates to a method for preparing ultra-low viscosity hydroxyalkyl cellulose by means of partial neutralization, wherein the method comprises the steps of: obtaining alkalized cellulose by reacting cellulose with an alkalizing agent; obtaining hydroxyalkyl cellulose by reacting the alkalized cellulose with an etherifying agent; neutralizing the hydroxyalkyl cellulose a first time; decomposing the hydroxyalkyl cellulose using hydrogen peroxide; and neutralizing the hydroxyalkyl cellulose a second time. Said method is capable of preparing ultra-low viscosity hydroxyalkyl cellulose while preventing process problems such as swelling which may occur during decomposition by means of acid treatment.
Inventors:
PARK JI HUN (KR)
JANG YONG SUNG (KR)
JEON MYEONG HO (KR)
JANG YONG SUNG (KR)
JEON MYEONG HO (KR)
Application Number:
PCT/KR2013/008737
Publication Date:
June 19, 2014
Filing Date:
September 30, 2013
Export Citation:
Assignee:
SAMSUNG FINE CHEMICALS CO LTD (KR)
International Classes:
C08B15/02
Foreign References:
| KR100901039B1 | 2009-06-04 | |||
| JP2003155301A | 2003-05-27 | |||
| US20100307379A1 | 2010-12-09 | |||
| US6054511A | 2000-04-25 | |||
| US6939961B1 | 2005-09-06 |
Attorney, Agent or Firm:
JEONG, Tae Hoon et al. (KR)
정태훈 (KR)
정태훈 (KR)
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