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    Process for preparing a composite moisture-permeable sheet material
    61.
    发明授权
    Process for preparing a composite moisture-permeable sheet material 失效
    制备复合水分渗透性材料的方法

    公开(公告)号：US3565981A

    公开(公告)日：1971-02-23

    申请号：US3565981D

    申请日：1967-05-09

    Applicant: DU PONT

    Inventor： LAURO MICHAEL R

    IPC: C08J9/28 ,  D06N3/00 ,  D06N3/14 ,  B29D3/02 ,  B29D27/04

    CPC classification number: D06N3/0065 ,  C08J9/28 ,  C08J2201/0544 ,  D06N3/0013 ,  D06N3/0077 ,  D06N3/14 ,  Y10S428/904 ,  Y10T428/24438 ,  Y10T428/249978

    Abstract: A LEATHER-LIKE SHOE-UPPER MATERIAL USEFUL FOR THE MANUFACTURE OF HIGH QUALITY DRESS SHOES IS PREPARED BY FIRST MAKING A MOISTURE-PERMEABLE SHEET MATERIAL HAVING A LAYER OF MICROPOROUS POLYMERIC COMPOSITION IN SUPERPOSED ADHERENCE WITH A FIBROUS SUBSTRATE SUCH AS A SINGLE OR MULTIPLE LAYER FABRIC, SAID LAYER OF COMPOSITION HAVING A PORE STRUCTURE WHICH MAKES IT IMPOSSIBLE TO OBTAIN A UNIFORMAPPEARING FINISH UNDER PRACTICAL MANUFACTURING CONDITIONS WHEN ONE OF MORE FINISH COATS IS APPLIED AND THE COATED

    SURFACE IS GRAIN-EMBOSSED; THEN THE SHEET MATERIAL IS SUBJECTED TO HEAT AND PRESSURE UNDER CAREFULLY REGULATED CONDITIONS UNTIL THE PORE STRUCTURE OF SAID LAYER OF COMPOSITION IS MODIFIED AND CONSOLIDATED TO SUUCH AN EXTENT THAT THE SURFACE CAN BE FINISH-COATED AND GRAIN-EMBOSSED TO PROVIDE A PRODUCT HAVING NOT ONLY SATISFACTORY BREATHABILITY BUT ALSO OUTSTANDING UNIFORMITY IN SUCH CRITICAL APPEARANCE PROPERTIES AS COLOR, GRAIN PATTERN AND SMOOTHNESS.

    POROUS POLYIMIDE MEMBRANE AND PROCESS FOR PRODUCTION OF SAME
    70.
    发明申请
    POROUS POLYIMIDE MEMBRANE AND PROCESS FOR PRODUCTION OF SAME 有权
    多孔聚酰胺薄膜及其制造方法

    公开(公告)号：US20110318556A1

    公开(公告)日：2011-12-29

    申请号：US13121830

    申请日：2009-10-02

    Applicant: Shyusei Ohya ,  Makoto Matsuo

    Inventor： Shyusei Ohya ,  Makoto Matsuo

    IPC: H01M2/16 ,  B32B3/26 ,  H01M2/18 ,  B32B7/02 ,  H01G9/02

    CPC classification number: C08L79/08 ,  B01D71/64 ,  C08J9/28 ,  C08J2201/0544 ,  C08J2379/08 ,  C08L25/06 ,  C08L31/04 ,  C08L33/12 ,  Y10T428/24975 ,  Y10T428/249961 ,  Y10T428/249978 ,  Y10T428/249979 ,  Y10T428/24998 ,  Y10T428/249981 ,  C08L2666/06 ,  C08L2666/08

    Abstract: Disclosed is a porous polyimide membrane of a three-layer structure having two surface layers (a) and (b) and a macrovoid layer interposed between the surface layers (a) and (b), wherein the macrovoid layer has a partition wall joined to the surface layers (a) and (b) and plural macrovoids surrounded by the partition wall and the surface layers (a) and (b), with an average void diameter in a membrane plane direction of from 10 to 500 μm; each of the partition wall of the macrovoid layer and the surface layers (a) and (b) has a thickness of from 0.1 to 50 μm and has plural pores having an average pore diameter of from 0.01 to 5 μm, the pores being communicated with each other and also communicated with the macrovoids; and the membrane has a total membrane thickness of from 5 to 500 μm and a porosity of from 70 to 95%.

    Abstract translation: 公开了具有两个表面层（a）和（b）的三层结构的多孔聚酰亚胺膜和介于表面层（a）和（b）之间的大孔层，其中大孔层具有连接到 表面层（a）和（b）以及由隔壁和表面层（a）和（b）包围的多个大孔，膜平面方向的平均孔径为10〜500μm; 大孔层的分隔壁和表面层（a）和（b）的厚度为0.1〜50μm，具有平均孔径为0.01〜5μm的多孔，孔与 彼此之间，并与大空隙沟通; 膜的总膜厚为5〜500μm，孔隙率为70〜95％。

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