Porous polyimide membrane and process for production of same
    72.
    发明授权
    Porous polyimide membrane and process for production of same 有权
    多孔聚酰亚胺膜及其制造方法

    公开(公告)号:US08420211B2

    公开(公告)日:2013-04-16

    申请号:US13121830

    申请日:2009-10-02

    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%。

    PROCESS FOR PRODUCING ETHYLENE/TETRAFLUOROETHYLENE COPOLYMER POROUS MATERIAL, AND ETHYLENE/TETRAFLUOROETHYLENE COPOLYMER POROUS MATERIAL
    74.
    发明申请
    PROCESS FOR PRODUCING ETHYLENE/TETRAFLUOROETHYLENE COPOLYMER POROUS MATERIAL, AND ETHYLENE/TETRAFLUOROETHYLENE COPOLYMER POROUS MATERIAL 审中-公开
    乙烯/四氟乙烯共聚物多孔材料的生产方法和乙烯/四氟乙烯共聚物多孔材料

    公开(公告)号:US20110178193A1

    公开(公告)日:2011-07-21

    申请号:US13071720

    申请日:2011-03-25

    Abstract: To provide a method for easily producing an ethylene/tetrafluoroethylene copolymer porous material having excellent chemical resistance and filtration performance and has a high heat resistance, within a wide range of the porosity, and an ethylene/tetrafluoroethylene copolymer porous material obtained by such a process.A process for producing an ethylene/tetrafluoroethylene copolymer porous material which comprises a step of dissolving an ethylene/tetrafluoroethylene copolymer having repeating units based on ethylene and repeating units based on tetrafluoroethylene at a temperature of at most 300° C. in a solvent which can dissolve the ethylene/tetrafluoroethylene copolymer at a temperature of at most 300° C., to achieve a predetermined concentration to obtain a solution, a step of forming the solution to obtain a formed product, and a step of cooling the formed product to a temperature of at most the phase separation temperature of the solution to solidify the ethylene/tetrafluoroethylene copolymer.

    Abstract translation: 为了提供容易制造具有优异的耐化学性和过滤性能并具有高孔隙率的高耐热性的乙烯/四氟乙烯共聚物多孔材料的方法,以及通过这种方法获得的乙烯/四氟乙烯共聚物多孔材料。 一种乙烯/四氟乙烯共聚物多孔材料的制造方法,其特征在于,在可溶解的溶剂中,溶解乙烯/四氟乙烯共聚物,该乙烯/四氟乙烯共聚物具有基于乙烯的重复单元和基于四氟乙烯的重复单元,在最多300℃的温度下, 乙烯/四氟乙烯共聚物,在至多300℃的温度下,达到预定浓度以获得溶液,形成溶液以获得成形产物的步骤,以及将形成的产物冷却至 最多使溶液的相分离温度固化乙烯/四氟乙烯共聚物。

    Hydrocarbon absorbent polymer & method of use
    76.
    发明申请
    Hydrocarbon absorbent polymer & method of use 审中-公开
    烃类吸收聚合物及其使用方法

    公开(公告)号:US20030029802A1

    公开(公告)日:2003-02-13

    申请号:US10217007

    申请日:2002-08-12

    Inventor: Juan Ruiz

    Abstract: A process and kit to create a spongy polyamide material that absorbs hydrocarbons from liquid or solid surfaces is described. The process for making the spongy polyamide material includes dissolving a polyamide in a solvent, introducing a non-solvent into the polyamide solvent solution to precipitate a spongy polyamide material and thereafter formed into different shapes, if so desired. The kit allows for the spongy polyamide material to be made at the site of an hydrocarbon spill. In one embodiment, the kit includes a premixed polyamide and solvent solution for use with water to precipitate a spongy polyamide material to be extruded and cut into a user desired form.

    Abstract translation: 描述了一种制备从液体或固体表面吸收碳氢化合物的海绵状聚酰胺材料的方法和试剂盒。 制造海绵状聚酰胺材料的方法包括将聚酰胺溶解在溶剂中,将非溶剂引入聚酰胺溶剂溶液中以沉淀海绵状聚酰胺材料,然后如果需要,形成不同形状。 该套件允许海绵状聚酰胺材料在碳氢化合物溢出部位制造。 在一个实施方案中,试剂盒包括与水一起使用的预混合聚酰胺和溶剂溶液,以将待挤出的海绵状聚酰胺材料沉淀并切割成用户期望的形式。

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