中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

133 records (took 0.023 seconds)

    Para-oriented aromatic polyamide porous film
    72.
    发明授权
    Para-oriented aromatic polyamide porous film 失效
    对位芳族聚酰胺多孔膜

    公开(公告)号：US5856426A

    公开(公告)日：1999-01-05

    申请号：US756245

    申请日：1996-11-25

    Applicant: Tsutomu Takahashi ,  Tatsuo Tateno ,  Yoshifumi Tsujimoto

    Inventor： Tsutomu Takahashi ,  Tatsuo Tateno ,  Yoshifumi Tsujimoto

    IPC: C08J5/18 ,  C08J9/26 ,  C08J9/28 ,  H01M2/16 ,  C08G73/10 ,  B29C39/14 ,  B32B27/08 ,  C08G69/08

    CPC classification number: C08J9/26 ,  C08J5/18 ,  C08J9/28 ,  H01M2/162 ,  H01M2/1653 ,  C08J2201/0542 ,  C08J2377/10 ,  Y10T428/31725

    Abstract: A para-oriented polyamide porous film comprising a fibril having a diameter of not more than 1.mu., with fibrils planarly arranged as a network or nonwoven fabric and laminated in a layer, the thermal linear expansion coefficient at 200.degree.-300.degree. C. within .+-.50.times.10.sup.-6 /.degree.C. and 30-95% vacant spaces. Also, a battery separator using the porous film. Also, a production process of: (a) forming a film-like material from a solution containing 1-10% of a para-oriented aromatic polyamide having an inherent viscosity of 1.0-2.8 dl/g and 1-10% of a chloride of an alkali metal or an alkali earth metal in a polar amide or polar urea solvent; (b) maintaining the film-like material at not less than 20.degree. C. and not more than -5.degree. C. to deposit the para-oriented aromatic polyamide; and (c) immersing the film-like material in an aqueous or alcoholic solution to elute the sovlent and chloride of the alkali metal or alkali earth metal, then drying to obtain the para-oriented aromatic polyamide porous film. The film has uniformity and fine vacant spaces, which cannot be accomplished by a nonwoven fabric. Characteristics of a para-aramid (e.g., high heat resistance, high rigidity, high strength, etc.) are used.

    Abstract translation: 对位取向的聚酰胺多孔膜，其包含直径不大于1微米的原纤维，其中原纤维平面地布置为网状或非织造织物并层压在一层中，热线膨胀系数在200-300℃ +/- 50×10 -6 /℃和30-95％的空位。 另外，使用多孔膜的电池隔板。 另外，制造方法为：（a）从含有1-10％的对数取向性芳香族聚酰胺的溶液形成薄膜状材料，所述对位芳香族聚酰胺的特性粘度为1.0〜2.8dl / g，和1-10％的氯化物 极性酰胺或极性脲溶剂中的碱金属或碱土金属; （b）将膜状材料保持在不低于20℃且不超过-5℃以沉积对位芳族聚酰胺; 和（c）将膜状材料浸渍在水溶液或醇溶液中以洗脱碱金属或碱土金属的溶液和氯化物，然后干燥以获得对位芳族聚酰胺多孔膜。 该膜具有均匀性和细小的空隙，无法通过无纺织物实现。 使用对位芳族聚酰胺的特性（例如，高耐热性，高刚性，高强度等）。

    Porous membranes based on unstable polymer solutions
    74.
    发明授权
    Porous membranes based on unstable polymer solutions 失效
    基于不稳定聚合物溶液的多孔膜

    公开(公告)号：US5387621A

    公开(公告)日：1995-02-07

    申请号：US16516

    申请日：1993-02-11

    Applicant: Giorgio Soldani

    Inventor： Giorgio Soldani

    IPC: A61L27/00 ,  A61L27/14 ,  A61L27/56 ,  C08J9/28

    CPC classification number: C08J9/28 ,  A61L27/14 ,  A61L27/56 ,  C08J2201/0542 ,  Y10S623/921

    Abstract: Porous, distensible, gel-like membranes which in tubular form are suitable as implants, e.g., vascular prostheses and a process for the preparation thereof is described. The membranes are formed by a spraying, phase-inversion technique which employs thermodynamically unstable polymer solutions and is accomplished by separately spraying the unstable solution and a nonsolvent onto a rotating surface. Prostheses from the highly porous tubular membranes have shown a high degree of patency and completeness of the healing process and are useful for direct implantation in the body or for extracorporeal vascular accesses.

    Abstract translation: 描述了多孔，可扩张的，呈管状形式的凝胶状膜，适合作为植入物，例如血管假体及其制备方法。 膜通过喷雾，相转化技术形成，其采用热力学不稳定的聚合物溶液，并且通过将不稳定溶液和非溶剂分别喷涂到旋转表面上来实现。 来自高度多孔的管状膜的假体具有高度的通畅和愈合过程的完整性，并且可用于直接植入体内或用于体外血管通路。

    Processes for producing porous polymer films and composite films
    75.
    发明授权
    Processes for producing porous polymer films and composite films 失效
    生产多孔聚合物膜和复合膜的方法

    公开(公告)号：US5238636A

    公开(公告)日：1993-08-24

    申请号：US769169

    申请日：1991-09-30

    Applicant: Takeo Furukawa ,  Yukio Inaba

    Inventor： Takeo Furukawa ,  Yukio Inaba

    IPC: C08J9/28

    CPC classification number: C08J9/28 ,  C08J2201/05 ,  C08J2201/0542

    Abstract: A process for forming a porous polymer film formed by allowing a solvent to evaporate from a solution of polymer containing water and alcohol. It is possible to form a porous polymer film in which the size and distribution of the pores are uniformalized. Also described is a process for producing a composite film in which the pores of the porous polymer film are filled with a functional low molecular substance such as liquid crystal or dye so that the dispersion diameter of the functional low molecular substance and the distribution of the same are uniformalized. In the production of the above-mentioned porous polymer film, the size of the pores on the porous polymer film can be controlled by controlling the humidity of the forming atmosphere or the water content in the solution of polymer. It is therefore possible to obtain a fixed film having superior electrical and optical characteristics, by forming a composite film through filling the pores of the thus obtained porous polymer film with a functional low molecular substance such as liquid crystal or dye and providing electrodes on the composite film.

    Abstract translation: 一种通过使溶剂从含有水和醇的聚合物溶液中蒸发而形成的多孔聚合物膜的方法。 可以形成其中孔的尺寸和分布均匀化的多孔聚合物膜。 还描述了一种制备复合膜的方法，其中多孔聚合物膜的孔填充有诸如液晶或染料的功能性低分子物质，使得官能低分子物质的分散直径及其分布 均匀化。 在上述多孔聚合物膜的制造中，可以通过控制成型气氛的湿度或聚合物溶液中的水含量来控制多孔聚合物膜上的孔的尺寸。 因此，通过用诸如液晶或染料的功能性低分子物质填充由此获得的多孔聚合物膜的孔而形成复合膜，并且在复合材料上提供电极，可以获得具有优异的电气和光学特性的固定膜 电影。

    Porous cellulose beads and the immobilization of enzymes therewith
    76.
    发明授权
    Porous cellulose beads and the immobilization of enzymes therewith 失效
    多孔纤维素珠和酶的固定

    公开(公告)号：US4063017A

    公开(公告)日：1977-12-13

    申请号：US679497

    申请日：1976-04-22

    Applicant: George T. Tsao ,  Li Fu Chen

    Inventor： George T. Tsao ,  Li Fu Chen

    IPC: C08J9/28 ,  C12N11/12 ,  C08B15/10 ,  C08B16/00

    CPC classification number: C08J9/28 ,  C12N11/12 ,  C08J2201/0542 ,  C08J2301/00 ,  Y10S530/814

    Abstract: Porous cellulose beads are prepared by distributing droplets of a solvent mixture containing a cellulose derivative into an aqueous solution to form porous beads which are then washed and hydrolyzed to form porous cellulose beads. The porous cellulose beads, which may be cross-linked, if desired, by suitable treatment, are useful carriers to which enzymes can be immobilized.

    Abstract translation: 通过将含有纤维素衍生物的溶剂混合物的液滴分配到水溶液中以形成多孔珠来制备多孔纤维素珠，然后将其洗涤并水解形成多孔纤维素珠。 如果需要，通过适当的处理可以交联的多孔纤维素珠粒是可以固定酶的有用的载体。

    Anisotropic organosilicon polymer membrane
    78.
    发明授权
    Anisotropic organosilicon polymer membrane 失效
    各向异性有机聚合物膜

    公开(公告)号：US3754375A

    公开(公告)日：1973-08-28

    申请号：US3754375D

    申请日：1971-03-02

    Applicant: RHONE POULENC SA

    Inventor： BOUCHILLOUX J ,  FABRE A ,  FAURE A

    IPC: B05D1/38 ,  B01D71/44 ,  C08F130/08 ,  C08J5/22 ,  C08J9/28 ,  C08L83/04 ,  B01D53/22 ,  C08C17/08

    CPC classification number: B01D71/44 ,  C08J9/28 ,  C08J2201/05 ,  C08J2201/0542

    Abstract: An anisotropic membrane is provided having excellent mechanical properties combined with good permeation characteristics which comprises a vinyltriorganosilane polymer or copolymer consisting of a dense layer, of average thickness between 0.01 and 10 Mu , and a porous layer with open pores, of thickness up to 500 Mu in which the volume of the interstitial spaces in the porous layer represents 20 to 80 percent of the total volume of the membrane.

    Abstract translation: 提供具有优异的机械性能和良好的渗透特性的各向异性膜，其包括乙烯基三有机硅烷聚合物或由致密层组成的共聚物，其平均厚度为0.01至10微米，和具有至多500微米厚度的开孔的多孔层 其中多孔层中的间隙空间的体积占膜的总体积的20至80％。

Patent Agency Ranking