发明名称 |
METHOD FOR PREPARATION OF HYDROXYALKYLALKYLCELLULOSE ETHERS WITH HIGH YIELD |
摘要 |
<p>The present invention relates to a method for preparing hydroxyalkylalkylcellulose with high yield, more particularly to a method for preparing hydroxyalkylalkylcellulose with high yield, with at least 60% of alkoxy and hydroxyalkoxy substituted, by treating finely ground pulp with an alkali metal hydroxide at room temperature, reacting it with an alkylene oxide and an alkyl halide, and then adding an alkali metal hydroxide and an alkyl halide thereto. The method of the present invention is highly economical and also environment-friendly because waste of the reactants can be greatly reduced.</p> |
申请公布号 |
EP1969012(B1) |
申请公布日期 |
2014.08.13 |
申请号 |
EP20050844817 |
申请日期 |
2005.12.30 |
申请人 |
SAMSUNG FINE CHEMICALS CO., LTD. |
发明人 |
KIM, SEOK SOO;KIM, UNG-JIN;LEE, IL YONG;HWANG, HEE WON;JANG, YONG SUNG |
分类号 |
C08B11/02 |
主分类号 |
C08B11/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|