Process for filtering a cellulose acetate solution
    1.
    发明授权
    Process for filtering a cellulose acetate solution 失效
    过滤醋酸纤维素溶液的方法

    公开(公告)号:US4132642A

    公开(公告)日:1979-01-02

    申请号:US830444

    申请日:1977-09-06

    IPC分类号: B01D37/02 C08B3/22 D01D1/10

    CPC分类号: C08B3/22 D01D1/106

    摘要: A process for filtering a cellulose acetate solution comprises the steps of providing a solution of cellulose acetate which is dissolved in an organic solvent; adding to the solution a quantity of loose particulate matter and loose fibers so as to form a mixture; and filtering the solution through pores of a filter medium so as to produce a filtrate of the solution, whereby due to addition of the loose particulate matter and the loose fibers clogging of the pores is reduced relative to the amount of filtrate passing through the pores and the effective filtering time of the filtering medium is thereby increased.

    摘要翻译: 一种过滤醋酸纤维素溶液的方法包括以下步骤:提供溶解在有机溶剂中的乙酸纤维素溶液; 向溶液中加入一定量的松散的颗粒物质和松散的纤维,以形成混合物; 并通过过滤介质的孔过滤溶液以产生溶液的滤液,由于添加松散的颗粒物质和松散的纤维堵塞孔隙相对于通过孔的滤液量减少, 从而增加了过滤介质的有效过滤时间。