Method for producing cellulose sulfoacetate derivatives and products and mixtures thereof
    3.
    发明授权
    Method for producing cellulose sulfoacetate derivatives and products and mixtures thereof 失效
    生产磺乙酸纤维素衍生物及其制品及其混合物的方法

    公开(公告)号:US06800754B1

    公开(公告)日:2004-10-05

    申请号:US09890348

    申请日:2002-03-04

    IPC分类号: C07H1100

    CPC分类号: C08B3/06 C08B7/00

    摘要: A method for directly producing a mixture of cellulose sulfoacetate derivatives by esterification of cellulosic material, characterized in that it comprises the following steps i) the cellulosic material is suspended in a glacial acetic acid solution and the excess acetic acid is eliminated ii) the cellulosic acid that is swollen with acetic acid is suspended in a sulfuric acid solution in glacial acetic acid and iii) the cellulose material is made to react by adding acetic anhydride.

    摘要翻译: 一种通过纤维素材料的酯化直接生产磺基乙酸纤维素的混合物的方法,其特征在于其包括以下步骤:i)将纤维素材料悬浮于冰醋酸溶液中,除去过量的乙酸; ii)纤维素酸 将其用乙酸溶胀悬浮在冰醋酸中的硫酸溶液中,和iii)通过加入乙酸酐使纤维素材料反应。