PROCESS FOR PRODUCING POROUS ETHYLENE/TETRAFLUOROETHYLENE COPOLYMER AND POROUS ETHYLENE/TETRAFLUOROETHYLENE COPOLYMER
    44.
    发明公开
    PROCESS FOR PRODUCING POROUS ETHYLENE/TETRAFLUOROETHYLENE COPOLYMER AND POROUS ETHYLENE/TETRAFLUOROETHYLENE COPOLYMER 有权
    处理对孔的乙烯/四氟乙烯共聚物和孔的乙烯/四氟乙烯共聚物

    公开(公告)号:EP2338933A1

    公开(公告)日:2011-06-29

    申请号:EP09820603.0

    申请日:2009-10-14

    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: 一种用于在具有优异的耐化学性和过滤性能的乙烯/四氟乙烯共聚物多孔体容易制造的方法和具有高耐热性,在宽范围的多孔性的内,并通过寻求的方法获得的乙烯/四氟乙烯共聚物多孔体。 一种用于在乙烯/四氟乙烯共聚物多孔体的制​​造方法,它包括在溶剂中,具有重复单元的乙烯/四氟乙烯共聚物在300℃的温度下溶解基于乙烯和重复基于四氟乙烯单元,其能溶解的步骤 在至多300℃的温度下的乙烯/四氟乙烯共聚物,以达到预定的浓度,以获得溶液,在形成溶液中,得到成形品的步骤,并且在大部分形成的产物冷却到温度的步骤 该溶液的相分离温度以固化乙烯/四氟乙烯共聚物。

    FORMATION OF POROUS MEMBRANES
    47.
    发明公开
    FORMATION OF POROUS MEMBRANES 失效
    教育多孔膜。

    公开(公告)号:EP0143812A1

    公开(公告)日:1985-06-12

    申请号:EP84901931.0

    申请日:1984-05-09

    Applicant: MEMTEC LIMITED

    Abstract: Un procédé de préparation d'une membrane poreuse comporte les étapes de dissolution d'un matériau thermoplastique possédant à la fois des parties relativement non cristallines et des parties relativement cristallines dans un solvant sous des conditions de température et de durée provoquant la dissolution des parties relativement non cristallines du matériau thermoplastique alors qu'au moins une partie des parties relativement cristallines dudit matériau thermoplastique ne se dissous pas, mais forme une dispersion colloïdale dans ledit solvant. La dispersion colloïdale et le solvant sont façonnés en un film, en provoquant ensuite la précipitation des parties thermoplastiques dissoutes dans ledit film, afin de former une membrane poreuse.

    Microcellular structures and process for their preparation
    50.
    发明公开
    Microcellular structures and process for their preparation 失效
    Mikrozellulare Strukturen und Verfahren zu ihrer Herstellung。

    公开(公告)号:EP0052936A1

    公开(公告)日:1982-06-02

    申请号:EP81304846.9

    申请日:1981-10-16

    Abstract: A process for producing non-porous microcellular film comprising preparing a casting solution of a polymer; casting the polymer solution as a wet film onto a substrate; partially drying the cast film and concurrently contacting the film with an anti-solvent in vaporous form, thereafter drying the film. The product is a film having a thin non-porous skin and a section having thin-walled cells. The non-porous skin is on that portion of the polymer exposed to the vaporous antisolvent atmosphere.

    Abstract translation: 一种制备无孔微孔膜的方法,包括制备聚合物的浇铸溶液; 将聚合物溶液作为湿膜浇注到基材上; 部分干燥流延膜并同时使膜与气态形式的抗溶剂接触,然后干燥轮辋。 该产品是具有薄的无孔皮肤和具有薄壁细胞的部分的薄膜。 无孔皮肤在暴露于蒸气反溶剂气氛的那部分聚合物上。

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