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10 条记录 (耗时 0.016 秒)

    Highly permeable polyethersulfone hollow fiber membranes for gas separation
    2.
    发明授权
    Highly permeable polyethersulfone hollow fiber membranes for gas separation 失效
    用于气体分离的高透性聚醚砜中空纤维膜

    公开(公告)号：US6017474A

    公开(公告)日：2000-01-25

    申请号：US100013

    申请日：1998-06-19

    申请人： Wah Koon Teo ,  Kang Li ,  Dongliang Wang

    发明人： Wah Koon Teo ,  Kang Li ,  Dongliang Wang

    IPC分类号： D01D5/24 ,  D01D5/247 ,  D01F6/66

    CPC分类号： D01F6/66 ,  D01D5/24 ,  D01D5/247

    摘要： Formulation polymer dopes and development of processes for preparing asymmetric polyethersulfone hollow fiber membranes for gas separation are provided. Polyethersulfone hollow fiber membranes which exhibit improved gas permeability and selectivity have been produced from a formulated polymer dope containing N-methyl-2-pyrrolidone (NMP) and suitable nonsolvent-additives (NSA). The nonsolvent-additives are water and the mixture of ethanol and water. The dopes were tailored to be close to the point of phase separation, and have moderate polymer concentration with moderate viscosity. The hollow fibers were spun by the dry-wet phase inversion processes using water as both the internal and external coagulant. The dried hollow fibers are then coated with silicone rubber, a highly permeable material and the coated hollow fiber membranes exhibit excellent permeability and selectivity compared to those of the state-of-the-art polyethersulfone membranes.

    摘要翻译： 提供了制备聚合物涂料和开发用于制备用于气体分离的不对称聚醚砜中空纤维膜的方法。 已经由含有N-甲基-2-吡咯烷酮（NMP）和合适的非溶剂 - 添加剂（NSA）的配制的聚合物涂料制备了具有改善的气体渗透性和选择性的聚醚砜中空纤维膜。 非溶剂 - 添加剂是水和乙醇和水的混合物。 这些涂料被定制为接近相分离点，并且具有中等粘度的中等聚合物浓度。 通过使用水作为内部和外部凝结剂的干 - 湿相转化方法将中空纤维纺丝。 然后用干燥的中空纤维涂覆硅橡胶，高度可渗透的材料，并且与现有技术的聚醚砜膜相比，涂覆的中空纤维膜表现出优异的渗透性和选择性。

    Recurring meeting schedule wizard
    5.
    发明授权
    Recurring meeting schedule wizard 失效
    定期会议安排向导

    公开(公告)号：US07693736B1

    公开(公告)日：2010-04-06

    申请号：US11554497

    申请日：2006-10-30

    申请人： Christopher Chu ,  Brijen Doshi ,  D. Michael Overmyer ,  Dongliang Wang

    发明人： Christopher Chu ,  Brijen Doshi ,  D. Michael Overmyer ,  Dongliang Wang

    IPC分类号： G06F9/46

    CPC分类号： G06Q10/1095

    摘要： The present invention provides methods and systems for scheduling recurring calendar items. More specifically, a recurring meeting may be scheduled between participants where the recurring meeting includes at least two different meetings that are set to occur at two different times with a determined periodicity. Allowable dates and times for the recurring meeting can be scheduled based on a number of criteria defined such as the availability of the participants for all meeting times and the availability of participants for certain meeting times.

    摘要翻译： 本发明提供了用于调度重复日历项目的方法和系统。 更具体地，可以在参与者之间安排定期会议，其中循环会议包括被设置为以确定的周期性在两个不同时间发生的至少两个不同的会议。 可以根据诸如所有会议时间的参与者的可用性以及某些会议时间的参与者的可用性等多个标准来安排定期会议的允许日期和时间。

    Cross Linking Treatment of Polymer Membranes
    8.
    发明申请
    Cross Linking Treatment of Polymer Membranes 审中-公开
    聚合物膜的交联处理

    公开(公告)号：US20080214687A1

    公开(公告)日：2008-09-04

    申请号：US11917093

    申请日：2006-06-20

    申请人： Heinz-Joachim Muller ,  Dongliang Wang ,  Ashvin Kumar

    发明人： Heinz-Joachim Muller ,  Dongliang Wang ,  Ashvin Kumar

    IPC分类号： C08J9/36

    CPC分类号： B01D67/0006 ,  B01D67/0011 ,  B01D71/26 ,  B01D71/32 ,  B01D71/34 ,  B01D71/38 ,  B01D71/40 ,  B01D71/44 ,  B01D71/62 ,  B01D71/64 ,  B01D71/68 ,  B01D2323/02 ,  B01D2323/30 ,  B01D2325/022 ,  B01D2325/36 ,  C08J3/245

    摘要： Methods of forming a hydrophilic porous polymeric membrane which include preparing a porous polymeric membrane from a polymer blend which typically contains a hydrophobic non crosslinkable component (e.g. PVdF) and a component which is cross-linkable (for instance, PVP) and treating said porous polymeric membrane under cross linking conditions to produce a modified membrane with greatly improved water permeability and hydrophilic stability. Cross linking condition include chemical (e.g. peroxodisulfate species), thermal or radiation and/or combinations thereof. Non cross linked material may be washed out if desired.

    摘要翻译： 形成亲水性多孔聚合物膜的方法包括由聚合物共混物制备多孔聚合物膜，所述聚合物共混物通常含有疏水性非交联性组分（例如PVdF）和可交联的组分（例如PVP）并处理所述多孔聚合物 膜在交联条件下生产出具有大大改善的透水性和亲水稳定性的改性膜。 交联条件包括化学（例如过二硫酸盐物质），热或辐射和/或它们的组合。 如果需要，非交联材料可以被洗掉。

    Chemical Cleaning Agent And Process For Cleaning Filtration Membranes
    10.
    发明申请
    Chemical Cleaning Agent And Process For Cleaning Filtration Membranes 审中-公开
    化学清洗剂及清洗过滤膜

    公开(公告)号：US20090127212A1

    公开(公告)日：2009-05-21

    申请号：US12067969

    申请日：2006-09-27

    申请人： Heinz-Joachim Muller ,  Dongliang Wang ,  Fufang Zha

    发明人： Heinz-Joachim Muller ,  Dongliang Wang ,  Fufang Zha

    IPC分类号： B01D65/06 ,  C11D3/20

    CPC分类号： C11D3/3947 ,  B01D61/145 ,  B01D61/147 ,  B01D65/02 ,  B01D2321/168

    摘要： Methods for cleaning a membrane, such a porous polymeric ultrafiltration or microfÊltration membranes (eg PVdF or Halar), comprising contacting the membrane with an aqueous solution comprising a monopersulfate anion. Buffers, chelating agents, catalysts, and combinations thereof can be added. The monopersulfate anion is most advantageously in the form of a potassium triple salt Of H2SO5, HSO5−, SO52−. Solutions comprising monopersulfate anions can be fed into a feed side of the membrane and the membrane is allowed to stand and soak in the solution or injected to the filtrate side prior to a membrane backwash. An aeration step and/or irradiation with ultraviolet light can be used.

    摘要翻译： 用于清洁膜的方法，例如多孔聚合超滤或微滤膜（例如PVdF或Halar），包括使膜与包含单过硫酸根阴离子的水溶液接触。 可以加入缓冲剂，螯合剂，催化剂及其组合。 单硫酸根阴离子最有利地是H2SO5，HSO5-，SO52-的三重盐的形式。 可以将包含单过硫酸根阴离子的溶液进料到膜的进料侧，并且允许膜在膜反洗之前静置并浸泡在溶液中或注入滤液侧。 曝光步骤和/或紫外线照射可以使用。