Electret process and products
    1.
    发明授权
    Electret process and products 失效
    驻极体工艺和产品

    公开(公告)号:US4944854A

    公开(公告)日:1990-07-31

    申请号:US781164

    申请日:1985-09-30

    IPC分类号: B01D39/08 H01G7/02

    摘要: Continuous processes for the preparation of electrets and the products produced thereby, including filter fabrics, are disclosed. The process employs a continuous film or continuous filaments in the form of a tightly packed warp having a warp density as determined by light transmission of not more than 40%. The continuous film or continuous filament in the form of a tightly packed warp are continuously fed one or more times through a corona charging station having electrodes disposed on both sides of the material being treated, the material being treated being simultaneously heated while being subjected to a corona discharge of from 6 KV to 20 KV direct current.

    摘要翻译: 公开了用于制备驻极体及由此生产的产品的连续方法,包括过滤织物。 该方法采用连续薄膜或连续长丝,其形式为紧密包装的经纱,其经光密度通过光透射测定不超过40%。 形成紧密堆叠的经纱的连续薄膜或连续长丝通过一个电晕充电站连续供给一个电晕充电站,该电晕放电站具有设置在待处理材料两侧的电极,待处理的材料同时被加热 6KV至20KV直流电晕放电。

    Methods of treating wastewater
    2.
    发明授权
    Methods of treating wastewater 失效
    废水处理方法

    公开(公告)号:US5695647A

    公开(公告)日:1997-12-09

    申请号:US635445

    申请日:1996-04-19

    IPC分类号: C02F1/56

    CPC分类号: C02F1/56 Y10S210/908

    摘要: The present invention provides methods of treating or clarifying a turbid wastewater containing at least one contaminant selected from the group consisting of proteinaceous materials, fats, oils, and other biological contaminants. The methods of the present invention include the steps of (a) contacting turbid wastewater to cellulose ester fibrets under conditions sufficient to flocculate the contaminant to form a treatment suspension, and then (b) separating the flocculants from the treatment suspension to provide a clarified wastewater.

    摘要翻译: 本发明提供了处理或澄清含有至少一种选自蛋白质材料,脂肪,油和其它生物污染物的污染物的混浊废水的方法。 本发明的方法包括以下步骤:(a)在足以使污染物絮凝形成处理悬浮液的条件下将混浊的废水与纤维素酯纤维素接触,然后(b)从处理悬浮液中分离絮凝剂以提供澄清废水 。

    Polyacrylonitrile composition admixed with low boiling acetonitrile
fraction and high boiling compatible plasticizer
    4.
    发明授权
    Polyacrylonitrile composition admixed with low boiling acetonitrile fraction and high boiling compatible plasticizer 失效
    聚丙烯腈组合物与低沸点乙腈部分和高沸点相容的增塑剂混合

    公开(公告)号:US3940405A

    公开(公告)日:1976-02-24

    申请号:US369636

    申请日:1973-06-13

    申请人: George A. Serad

    发明人: George A. Serad

    IPC分类号: C08K5/00 C08L33/20

    摘要: High polyacrylonitrile polymers containing at least 85 percent acrylonitrile can be melt extruded into useful shaped articles when plasticized with a plasticizing system comprising a low boiling acetonitrile fraction and a high boiling fraction capable of plasticizing the polyacrylonitrile at extrusion temperatures.

    摘要翻译: 含有至少85%丙烯腈的高聚丙烯腈聚合物可以在用包含低沸点乙腈部分和能够在挤出温度下塑化聚丙烯腈的高沸点馏分的塑化系统进行增塑时被熔融挤出成有用的成型制品。