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    • 1. 发明申请
    • METHOD FOR PREPARING CELLULOSE DERIVATIVES HAVING SOLUBILITY IMPROVED
    • 制备具有改善溶解性的纤维素衍生物的方法
    • US20090176277A1
    • 2009-07-09
    • US11569360
    • 2005-08-22
    • Kazuhisa HayakawaYuichi NishiyamaTatsuo Endo
    • Kazuhisa HayakawaYuichi NishiyamaTatsuo Endo
    • C12P19/00C07H1/00
    • C12P19/14C08B15/00C12P19/04
    • Provided is a method for preparing a cellulose derivative having solubility improved and therefore having less undissolved floating portions when the derivative is added into water. More specifically, provided is a method for preparing a cellulose derivative, comprising a step of depolymerizing a cellulose derivative to produce a depolymerized cellulose derivative having a viscosity at 20° C. in a 2% by weight aqueous solution of the depolymerized cellulose derivative reduced by at least 10% compared with that of the cellulose derivative before the depolymerization so that the number of undissolved floating portions in the aqueous solution of the depolymerized cellulose derivative is decreased compared with that of the cellulose derivative before the depolymerization. Depolymerization is effected preferably by an acid, alkali or enzyme.
    • 本发明提供一种制备具有溶解度提高的纤维素衍生物的方法,并且当将衍生物加入到水中时具有较少的未溶解的浮动部分。 更具体地说,提供了一种制备纤维素衍生物的方法,包括将纤维素衍生物解聚以在20℃下粘度为2重量%的解聚的纤维素衍生物的水溶液中还原的解聚的纤维素衍生物的步骤 与解聚前的纤维素衍生物相比,至少10%以上,与解聚前的纤维素衍生物相比,解聚纤维素衍生物的水溶液中未溶解的浮动部分的数量减少。 解聚优选通过酸,碱或酶进行。
    • 2. 发明授权
    • Method for preparing cellulose derivatives having solubility improved
    • 制备具有溶解度的纤维素衍生物的方法
    • US08865432B2
    • 2014-10-21
    • US11569360
    • 2005-08-22
    • Kazuhisa HayakawaYuichi NishiyamaTatsuo Endo
    • Kazuhisa HayakawaYuichi NishiyamaTatsuo Endo
    • C12P19/00C12P19/04C08B15/00C12P19/14
    • C12P19/14C08B15/00C12P19/04
    • Provided is a method for preparing a cellulose derivative having solubility improved and therefore having less undissolved floating portions when the derivative is added into water. More specifically, provided is a method for preparing a cellulose derivative, comprising a step of depolymerizing a cellulose derivative to produce a depolymerized cellulose derivative having a viscosity at 20° C. in a 2% by weight aqueous solution of the depolymerized cellulose derivative reduced by at least 10% compared with that of the cellulose derivative before the depolymerization so that the number of undissolved floating portions in the aqueous solution of the depolymerized cellulose derivative is decreased compared with that of the cellulose derivative before the depolymerization. Depolymerization is effected preferably by an acid, alkali or enzyme.
    • 本发明提供一种制备具有溶解度提高的纤维素衍生物的方法,并且当将衍生物加入到水中时具有较少的未溶解的浮动部分。 更具体地说,提供了一种制备纤维素衍生物的方法,包括将纤维素衍生物解聚以在20℃下粘度为2重量%的解聚的纤维素衍生物的水溶液中还原的解聚的纤维素衍生物的步骤 与解聚前的纤维素衍生物相比,至少10%以上,与解聚前的纤维素衍生物相比,解聚纤维素衍生物的水溶液中未溶解的浮动部分的数量减少。 解聚优选通过酸,碱或酶进行。
    • 3. 发明授权
    • Electrochromic device with low resistance electrical connections
    • 具有低电阻电气连接的电致发光器件
    • US5187607A
    • 1993-02-16
    • US491053
    • 1990-03-09
    • Tatsuo EndoMitsuyoshi Mizuno
    • Tatsuo EndoMitsuyoshi Mizuno
    • G02F1/153
    • G02F1/153
    • An electrochromic device is constructed with a first electrode layer, an electrochromic layer and a second electrode layer formed on a substrate in sequence, with at least one of the first and second electrode layers being a transparent electrode layer. The device is characterized in that a conductive thin film having a resistance lower than that of the transparent electrode layer is formed on part of the substrate, and part of the transparent electrode layer is formed on this conductive thin film. Alternatively, the conductive thin film is formed in contact with a part of the transparent electrode layer formed on an end surface of the substrate, and the area of the conductive thin film is larger than a corresponding underlying cross-sectional area of the substrate taken in the direction of the substrate thickness.
    • 电致变色装置由第一电极层,电致变色层和依次形成在基板上的第二电极层构成,第一和第二电极层中的至少一个是透明电极层。 该器件的特征在于,在一部分基板上形成电阻低于透明电极层的导电薄膜,并且在该导电薄膜上形成透明电极层的一部分。 或者,导电薄膜形成为与形成在基板的端面上的透明电极层的一部分接触,并且导电薄膜的面积大于所采用的基板的相应的下面的横截面积 基板厚度的方向。