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    Metal-doped organic foam
    61.
    发明授权
    Metal-doped organic foam 失效
    金属掺杂有机泡沫

    公开(公告)号：US4325737A

    公开(公告)日：1982-04-20

    申请号：US197465

    申请日：1980-10-16

    Applicant: James A. Rinde

    Inventor： James A. Rinde

    IPC: C08J9/28 ,  C08L1/12 ,  C08L1/08

    CPC classification number: C08J9/28 ,  C08J2201/0546

    Abstract: Organic foams having a low density and very small cell size and method for producing same in either a metal-loaded or unloaded (nonmetal loaded) form are described. Metal-doped foams are produced by soaking a polymer gel in an aqueous solution of desired metal salt, soaking the gel successively in a solvent series of decreasing polarity to remove water from the gel and replace it with a solvent of lower polarity with each successive solvent in the series being miscible with the solvents on each side and being saturated with the desired metal salt, and removing the last of the solvents from the gel to produce the desired metal-doped foam having desired density cell size, and metal loading. The unloaded or metal-doped foams can be utilized in a variety of applications requiring low density, small cell size foam. For example, rubidium-doped foam made in accordance with the invention has utility in special applications, such as in x-ray lasers.

    Abstract translation: 描述了具有低密度和非常小的泡孔尺寸的有机泡沫体以及用于以金属加载或卸载（非金属加载）形式生产的有机泡沫体。 通过将聚合物凝胶浸渍在所需金属盐的水溶液中来制备金属掺杂的泡沫，将凝胶依次以极性降低的溶剂系列浸泡以从凝胶中除去水，并用每个相继的溶剂代替低极性的溶剂 该系列与每一侧上的溶剂混溶并被所需的金属盐饱和，并从凝胶中除去最后的溶剂以产生具有所需密度单元尺寸和金属负载的所需金属掺杂泡沫。 无负载或金属掺杂的泡沫可用于需要低密度，小泡孔泡沫的各种应用中。 例如，根据本发明制成的掺杂铷的泡沫可用于特殊应用中，例如在x射线激光器中。

    Opaque, microcellular films from latex compositions, process and composition for preparing the same
    62.
    发明授权
    Opaque, microcellular films from latex compositions, process and composition for preparing the same 失效
    来自胶乳组合物的不透明的微孔膜，其制备方法和组合物

    公开(公告)号：US3951899A

    公开(公告)日：1976-04-20

    申请号：US151735

    申请日：1971-06-10

    Applicant: Jerome A. Seiner

    Inventor： Jerome A. Seiner

    IPC: C08J9/28 ,  C09D5/02 ,  C09D157/00 ,  C08L9/10 ,  C08L13/02

    CPC classification number: C09D5/02 ,  C08J9/28 ,  C09D157/00 ,  C08J2201/048 ,  C08J2201/05 ,  C08J2201/0546

    Abstract: The disclosed invention relates to films from a novel latex mixture which are non-porous, microcellular and opaque in the absence of an opacifying agent. The preparation of the films of the disclosed invention comprises providing control techniques for entrapping a sufficient amount of a liquid non-solvent for the polymer in the polymer matrix of a latex after the continuous phase removal, so that upon evaporation of the non-solvent from a coalesced and tack-free polymer matrix, a resulting opaque and continuous, non-porous film is produced which will have minute, discrete and substantially closed voids and which is opaque in the absence of an opacifying agent such as pigment.The disclosed invention also relates to opaque films with enhanced optical properties produced by the inclusion of pigments, fluorescent materials and optical brighteners in the opaque films in such a manner as to maximize their effectiveness therein.

    Abstract translation: 所公开的发明涉及在不存在不透明剂的情况下来自无孔，微孔和不透明的新型胶乳混合物的膜。 所公开的发明的膜的制备包括提供控制技术，用于在连续除去之后将聚合物的足够量的液体非溶剂包封在胶乳的聚合物基质中，使得当非溶剂从 产生聚结和无粘性的聚合物基质，产生不透明和连续的非多孔膜，其将具有微小的，离散的和基本上闭合的空隙，并且在不存在不透明剂如颜料的情况下是不透明的。

    Preparation of asymmetric polymer membranes
    63.
    发明授权
    Preparation of asymmetric polymer membranes 失效
    不对称聚合物膜的制备

    公开(公告)号：US3852388A

    公开(公告)日：1974-12-03

    申请号：US35242873

    申请日：1973-04-19

    Applicant: GEN ELECTRIC

    Inventor： KIMURA S

    IPC: B01D67/00 ,  B01D69/02 ,  B01D71/52 ,  C08J9/28 ,  B29D27/04 ,  B01D39/16

    CPC classification number: C08J9/28 ,  B01D67/0011 ,  B01D67/0013 ,  B01D69/02 ,  B01D71/52 ,  B01D2323/12 ,  B01D2325/022 ,  C08J2201/0543 ,  C08J2201/0546 ,  Y10S264/14 ,  Y10T428/249961 ,  Y10T428/249979 ,  Y10T428/249989 ,  Y10T428/268

    Abstract: A method is disclosed for the preparation (by the utilization of a proper solvent system) of dry asymmetric membranes comprising a porous layer of interconnected crystals of polymer material. Membranes of many polymer materials may be optionally prepared either with or without a dense surface layer as one face thereof. In either case the porous layer is structured with graded porosity. A three-component casting solution is prepared containing the polymer, a first good volatile solvent for the polymer and (relative to the first solvent) a poor less-volatile solvent for the polymer, which is miscible with the good solvent. A membrane is cast at room temperature, allowed to desolvate at room temperature for a short time and is then immersed in a precipitating agent, that is miscible with both the aforementioned solvents but is a non-solvent for the polymer. The membrane is then permitted to dry.

    Abstract translation: 公开了一种用于制备干燥不对称膜（通过使用合适的溶剂体系）的方法，其包括聚合物材料的互连晶体的多孔层。 许多聚合物材料的膜可以任选地制备为具有或不具有致密表面层作为其一个面。 在任一种情况下，多孔层均具有渐变孔隙度。 制备含有聚合物的三组分流延溶液，用于聚合物的第一良好的挥发性溶剂和（相对于第一溶剂）聚合物的差的易挥发溶剂，其与良溶剂可混溶。 将膜在室温下浇铸，在室温下短时间脱盐，然后浸入与上述溶剂混溶的沉淀剂中，但是是聚合物的非溶剂。 然后允许膜干燥。

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