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    METHOD FOR PREPARATION OF HIGH ENZYMATIC RESISTANCE HYDROXYALKYLCELLULOSE DERIVATIVES
    1.
    发明申请
    METHOD FOR PREPARATION OF HIGH ENZYMATIC RESISTANCE HYDROXYALKYLCELLULOSE DERIVATIVES 有权
    高耐药性羟化纤维素衍生物的制备方法

    公开(公告)号：US20090299051A1

    公开(公告)日：2009-12-03

    申请号：US11721104

    申请日：2004-12-17

    申请人： Seok Soo Kim ,  Jung Ho So ,  Il Yong Lee ,  Hee Won Hwang

    发明人： Seok Soo Kim ,  Jung Ho So ,  Il Yong Lee ,  Hee Won Hwang

    IPC分类号： C08B1/00

    CPC分类号： C08B11/08 ,  C08B11/193

    摘要： The present invention relates to a process of preparing hydroxyalkyl cellulose derivatives having improved enzymatic resistance. In particular, the present invention relates to a process of preparing hydroxyalkyl cellulose derivatives by reacting cellulose and ethylene oxide in the presence of alkali metal hydroxide, wherein the reaction between cellulose and ethylene oxide is performed in the presence of isopropyl alcohol azeotropic solvent in a horizontally agitated reactor, wherein the ethylene oxide is supplied via two steps, thus resulting in a two-step reaction, and the amount of alkali metal hydroxide remaining after the first reaction is controlled, thereby enabling to provide hydroxyalkyl cellulose derivatives having improved enzymatic resistance and turbidity and to remarkably decrease the solvent usage to have economical and environmental advantages.

    摘要翻译： 本发明涉及一种制备具有改善的抗酶性的羟烷基纤维素衍生物的方法。 特别地，本发明涉及在碱金属氢氧化物存在下使纤维素和环氧乙烷反应制备羟烷基纤维素衍生物的方法，其中纤维素与环氧乙烷之间的反应是在异丙醇共沸溶剂存在下在水平 搅拌反应器，其中环氧乙烷通过两个步骤供应，从而导致两步反应，并且控制第一反应后剩余的碱金属氢氧化物的量，从而能够提供具有改善的抗酶性和浊度的羟烷基纤维素衍生物 并显着降低溶剂用量，具有经济和环保的优点。

    Method for Preparation of Hydroxyalkylalkylcellulose Ethers with High Yield
    2.
    发明申请
    Method for Preparation of Hydroxyalkylalkylcellulose Ethers with High Yield 审中-公开
    高产量羟烷基烷基纤维素醚的制备方法

    公开(公告)号：US20080242852A1

    公开(公告)日：2008-10-02

    申请号：US10574331

    申请日：2005-12-30

    申请人： Seok Soo Kim ,  Ung-Jin Kim ,  Il Yong Lee ,  Hee Won Hwang ,  Yong Sung Jang

    发明人： Seok Soo Kim ,  Ung-Jin Kim ,  Il Yong Lee ,  Hee Won Hwang ,  Yong Sung Jang

    IPC分类号： C08B11/02

    CPC分类号： C08B11/08

    摘要： 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.

    摘要翻译： 本发明涉及一种以高产率制备羟烷基烷基纤维素的方法，更具体地涉及一种以高产率制备羟烷基烷基纤维素的方法，通过在室温下用碱金属氢氧化物处理细磨的纸浆，将至少60％的烷氧基和羟基烷氧基取代 与烯化氧和烷基卤反应，然后向其中加入碱金属氢氧化物和烷基卤化物。 本发明的方法是非常经济且环保的，因为可以大大减少反应物的浪费。

    Method for preparation of high enzymatic resistance hydroxyalkylcellulose derivatives
    3.
    发明授权
    Method for preparation of high enzymatic resistance hydroxyalkylcellulose derivatives 有权
    高抗酶解羟烷基纤维素衍生物的制备方法

    公开(公告)号：US08093376B2

    公开(公告)日：2012-01-10

    申请号：US11721104

    申请日：2004-12-17

    申请人： Seok Soo Kim ,  Jung Ho So ,  Il Yong Lee ,  Hee Won Hwang

    发明人： Seok Soo Kim ,  Jung Ho So ,  Il Yong Lee ,  Hee Won Hwang

    IPC分类号： C08B1/00 ,  C08B11/00 ,  C08B11/20 ,  C08B11/08 ,  C08B37/00

    CPC分类号： C08B11/08 ,  C08B11/193

    摘要： The present invention relates to a process of preparing hydroxyalkyl cellulose derivatives having improved enzymatic resistance. In particular, the present invention relates to a process of preparing hydroxyalkyl cellulose derivatives by reacting cellulose and ethylene oxide in the presence of alkali metal hydroxide, wherein the reaction between cellulose and ethylene oxide is performed in the presence of isopropyl alcohol azeotropic solvent in a horizontally agitated reactor, wherein the ethylene oxide is supplied via two steps, thus resulting in a two-step reaction, and the amount of alkali metal hydroxide remaining after the first reaction is controlled, thereby enabling to provide hydroxyalkyl cellulose derivatives having improved enzymatic resistance and turbidity and to remarkably decrease the solvent usage to have economical and environmental advantages.

    摘要翻译： 本发明涉及一种制备具有改善的抗酶性的羟烷基纤维素衍生物的方法。 特别地，本发明涉及在碱金属氢氧化物存在下使纤维素和环氧乙烷反应制备羟烷基纤维素衍生物的方法，其中纤维素与环氧乙烷之间的反应是在异丙醇共沸溶剂存在下在水平 搅拌反应器，其中环氧乙烷通过两个步骤供应，从而导致两步反应，并且控制第一反应后剩余的碱金属氢氧化物的量，从而能够提供具有改善的抗酶性和浊度的羟烷基纤维素衍生物 并显着降低溶剂用量，具有经济和环保的优点。