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17 条记录 (耗时 0.024 秒)

    Compositions useful for making microporous polyvinylidene fluoride membranes, and process
    14.
    发明授权
    Compositions useful for making microporous polyvinylidene fluoride membranes, and process 失效
    用于制造微孔聚偏二氟乙烯膜的组合物和方法

    公开(公告)号：US5013339A

    公开(公告)日：1991-05-07

    申请号：US446027

    申请日：1989-12-05

    申请人： Robert D. Mahoney ,  Richard A. Lundgard

    发明人： Robert D. Mahoney ,  Richard A. Lundgard

    IPC分类号： B01D71/34 ,  C08J3/09

    CPC分类号： C08J3/095 ,  B01D71/34 ,  C08J2327/16

    摘要： This invention relates a composition useful for preparing a polyvinylidene fluoride polymer membrane containing (1) a polyvinylidene fluoride polymer, (2) glycerol monoacetate, glycerol diacetate, glycerol triacetate, or mixtures thereof, and (3) optionally glycerol, wherein the polyvinylidene fluoride polymer membrane prepared from the composition is useful for a membrane liquid separation process such as microfiltration, ultrafiltration, dialysis, or membrane stripping. In another aspect, this invention is an improved process for using the composition to prepare a polyvinylidene fluoride polymer membrane by forming a mixture of the composition, heating the mixture to a temperature at which the mixture becomes a homogeneous fluid, and extruding, molding, or casting the homogeneous fluid into a membrane. Another aspect of this invention relates to a polyvinylidene fluoride polymer membrane where the fabricated membrane contains glycerol monoacetate, glycerol diacetate, glycerol triacetate, or mixtures thereof, and optionally glycerol.

    摘要翻译： 本发明涉及用于制备聚偏二氟乙烯聚合物膜的组合物，其包含（1）聚偏二氟乙烯聚合物，（2）甘油单乙酸酯，甘油二乙酸酯，甘油三乙酸酯或其混合物，和（3）任选的甘油，其中聚偏二氟乙烯聚合物 从组合物制备的膜可用于膜分离过程如微滤，超滤，透析或膜剥离。 另一方面，本发明是一种改进的方法，用于使用该组合物来制备聚偏二氟乙烯聚合物膜，方法是通过形成组合物的混合物，将混合物加热到混合物变成均匀流体的温度，挤出，成型或 将均匀流体浇铸成膜。 本发明的另一方面涉及聚偏二氟乙烯聚合物膜，其中制造的膜含有甘油单乙酸酯，甘油二乙酸酯，甘油三乙酸酯或其混合物，以及任选的甘油。

    Compositions useful for preparing cellulose ester membranes for liquid separations
    15.
    发明授权
    Compositions useful for preparing cellulose ester membranes for liquid separations 失效
    用于制备用于液体分离的纤维素酯膜的组合物

    公开(公告)号：US4980063A

    公开(公告)日：1990-12-25

    申请号：US303591

    申请日：1989-01-27

    申请人： Robert D. Mahoney ,  Jee I. Kau ,  Roger B. Hornby ,  Ernest A. Sharer

    发明人： Robert D. Mahoney ,  Jee I. Kau ,  Roger B. Hornby ,  Ernest A. Sharer

    IPC分类号： B01D71/16 ,  C08J3/09

    CPC分类号： C08J3/095 ,  B01D71/16 ,  C08J2301/08

    摘要： This invention consists of a composition useful for preparing a cellulose ester membrane comprising (1) a cellulose ester, (2) glycerol monoacetate, glycerol diacetate, glycerol triacetate, or mixtures thereof, and (3) optionally glycerol, wherein the cellulose ester membrane prepared from said composition is useful for a membrane liquid separation process such as microfiltration, ultrafiltration, dialysis, or reverse osmosis. In another aspect, this invention is an improved process for using said composition to prepare a cellulose ester membrane by forming a mixture of said composition, heating the mixture to a temperature at which the mixture becomes a homogeneous fluid, and extruding, molding, or casting the homogeneous fluid into a membrane. Another aspect of this invention consists of a cellulose ester membrane wherein the fabricated membrane contains glycerol monoacetate, glycerol diacetate, glycerol triacetate, or mixtures thereof, and optionally glycerol.

    摘要翻译： 本发明由用于制备纤维素酯膜的组合物组成，其包含（1）纤维素酯，（2）甘油单乙酸酯，甘油二乙酸酯，甘油三乙酸酯或其混合物，和（3）任选的甘油，其中所述纤维素酯膜制备 从所述组合物可用于膜分离过程如微滤，超滤，透析或反渗透。 另一方面，本发明是一种改进的方法，用于使用所述组合物通过形成所述组合物的混合物来制备纤维素酯膜，将混合物加热到混合物变成均匀流体的温度，以及挤出，模制或铸造 均质流体进入膜。 本发明的另一方面由纤维素酯膜组成，其中制造的膜含有甘油单乙酸酯，甘油二乙酸酯，甘油三乙酸酯或其混合物，以及任选的甘油。

    Microporous polyethylene hollow fibers and process of preparing them
    17.
    发明授权
    Microporous polyethylene hollow fibers and process of preparing them 失效
    微孔聚乙烯中空纤维及其制备方法

    公开(公告)号：US4020230A

    公开(公告)日：1977-04-26

    申请号：US619431

    申请日：1975-10-03

    申请人： Robert D. Mahoney ,  Stephen E. Schneider

    发明人： Robert D. Mahoney ,  Stephen E. Schneider

    IPC分类号： B01D67/00 ,  B01D69/08 ,  B01D71/26 ,  D01D5/24 ,  B01D47/00 ,  B01D59/10 ,  D02G3/00

    CPC分类号： D01D5/24 ,  B01D67/0027 ,  B01D67/003 ,  B01D69/08 ,  B01D71/26 ,  Y10T428/2975

    摘要： Normally hydrophobic, polyethylene hollow fibers having contiguous microporosity are prepared by extruding a heated solution of a polyethylene and an ester from a hollow fiber spinnerette, simultaneously cooling and drawing the forming fibers to a ratio of up to 40 to 1, drawing the gelled fibers to an overall ratio of from about 1.5/1 to 800/1 and then removing the ester. The maximum pore radius ranges up to about 50A, and the fibers have gas permeabilities approaching 10.sup.-.sup.2 cc (STP) per cm.sup.2 per second per cm. Hg. transmembrane pressure differential. A significant increase in permeability over polyethylene hollow fibers made according to the teachings of the prior art is achieved.

    摘要翻译： 通常疏水的，具有连续微孔性的聚乙烯中空纤维通过从中空纤维纺丝板中挤出聚乙烯和酯的加热溶液，同时冷却和拉伸成型纤维至40至1的比例，将凝胶化纤维拉伸至 总比为约1.5 / 1至800/1，然后除去酯。 最大孔半径范围高达约50A，并且纤维具有接近每平方厘米每厘米每厘米2厘沲（STP）的气体渗透性。 汞。 跨膜压差。 实现了根据现有技术的教导制造的聚乙烯中空纤维的渗透性显着提高。