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    • 98. 发明申请
    • HYDROXYALKYLALKYL CELLULOSE FOR TABLETING AND SOLID PREPARATION COMPRISING THE SAME
    • 用于包含其的成型和固体制剂的羟基甲基纤维素
    • US20150231082A1
    • 2015-08-20
    • US14617487
    • 2015-02-09
    • SHIN-ETSU CHEMICAL CO., LTD.
    • Takuya YOKOSAWANaosuke MARUYAMA
    • A61K9/20A61K31/167C08B11/02
    • A61K9/2054A61K9/2018A61K31/167A61K47/38C08B1/06C08B1/08C08B11/02C08B11/08C08B11/193C08B11/20C08L1/284Y10T428/2982
    • Provided are a hydroxyalkylalkyl cellulose excellent in formability and not causing marked delay in disintegration when added even in a small amount; a solid preparation including the hydroxyalkylalkyl cellulose; and a method for producing the solid preparation. More specifically, provided are a hydroxyalkylalkyl cellulose for tableting having a specific surface area of from 0.5 to 5.0 m2/g as measured by BET and a solid preparation including the hydroxyalkylalkyl cellulose. Also provided is a method for producing the hydroxyalkylalkyl cellulose for tableting, including the steps of: bringing pulp into contact with an alkali metal hydroxide solution to obtain an alkali cellulose, reacting the alkali cellulose with an etherifying agent to obtain a first hydroxyalkylalkyl cellulose, grinding the first hydroxyalkylalkyl cellulose, and subjecting the ground first hydroxyalkylalkyl cellulose to hydrolysis in the presence of an acid catalyst or oxidative degradation in the presence of an oxidant to obtain a second hydroxyalkylalkyl cellulose.
    • 提供了成型性优异的羟烷基烷基纤维素,即使少量添加也不会引起明显的崩解延迟; 包括羟烷基烷基纤维素的固体制剂; 和固体制剂的制造方法。 更具体地,提供了通过BET测定的比表面积为0.5-5.0m 2 / g的压片用羟烷基烷基纤维素和包含羟烷基烷基纤维素的固体制剂。 还提供了用于制备用于压片的羟烷基烷基纤维素的方法,包括以下步骤:使纸浆与碱金属氢氧化物溶液接触以获得碱纤维素,使碱纤维素与醚化剂反应,得到第一羟烷基烷基纤维素,研磨 第一羟烷基烷基纤维素,并且在酸催化剂存在下使研磨的第一羟烷基烷基纤维素水解,或在氧化剂存在下进行氧化降解,得到第二羟烷基烷基纤维素。