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    Systems for producing a plurality of different microporous phase inversion membrane each having any one of a plurality of different pore sizes from a single master dope batch
    3.
    发明授权
    Systems for producing a plurality of different microporous phase inversion membrane each having any one of a plurality of different pore sizes from a single master dope batch 失效
    用于生产多个不同微孔相转换膜的系统，每个膜都具有多个不同孔径中的任何一种，单个主胶束批次

    公开(公告)号：US6056529A

    公开(公告)日：2000-05-02

    申请号：US022295

    申请日：1998-02-11

    申请人： Mark T Meyering ,  William R. Kelly ,  Joseph G. Wallace

    发明人： Mark T Meyering ,  William R. Kelly ,  Joseph G. Wallace

    IPC分类号： B01D67/00 ,  B01D69/02 ,  B01D71/56 ,  C08J9/28 ,  B01D13/00

    CPC分类号： B01D71/56 ,  B01D67/0009 ,  B01D67/0011 ,  B01D69/02 ,  B01D2323/12 ,  B01D2325/34

    摘要： Systems for processing dope for the manufacture of microporous phase inversion membrane having any one of a plurality of different pore sizes from a single master dope batch is disclosed. The systems and methods include formulating a single master batch of dope preferably maximizing the non-solvent to solvent ratio for a given weight percentage of polymer for use in a microporous phase inversion membrane casting operation to produce phase inversion membranes having one of a plurality of different predetermined pore sizes. The master dope batch is controllably formulated in a vessel such that the temperature of the dope does not exceed a predetermined maximum mixing temperature and is maintained at a relatively low temperature (lower than the mixing temperature) suitable for storage. A small portion of the dope is then sequentially heated to a temperature no higher than any one of a plurality of target temperatures, the target temperature corresponding to a specific desired pore size to be formed in the microporous phase inversion membrane that results from casting the dope. As portions of the dope are incrementally transferred from the vessel to the dope casting apparatus, the dope portions are heated to a temperature no higher than within about .+-.0.15.degree. C. of the target temperature. The dope is then cooled to about room temperature or the temperature which results in a suitable and/or optimal casting viscosity and transferred to the dope casting apparatus to be forming microporous phase inversion membrane having any one of a plurality of different possible pore sizes.

    摘要翻译： 公开了用于制造具有从单个母胶浆批次具有多个不同孔径的任何一种的微孔相转换膜的加工用系统。 该系统和方法包括配制单一母料批料，优选最大化给定重量百分比的聚合物的非溶剂与溶剂比，用于微孔相转移膜操作以产生具有多种不同的其中之一的相转移膜 预定孔径。 主料浆料可控地配制在容器中，使得涂料的温度不超过预定的最大混合温度，并保持在适合储存的相对低的温度（低于混合温度）。 然后将一小部分的涂料依次加热到不高于多个目标温度中的任何一个的温度，对应于在微孔相转化膜中形成的特定所需孔径的目标温度，其由铸造原液 。 由于涂料的一部分从容器中逐渐转移到涂料浇铸设备中，所以将涂料部分加热到不高于目标温度的约+/- 0.15℃的温度。 然后将涂料冷却至约室温或温度，其导致合适和/或最佳浇铸粘度并转移到涂料浇注设备中以形成具有多种不同可能孔径中的任何一种的微孔相转移膜。

    Process of making microporous phase inversion membranes
    4.
    发明授权
    Process of making microporous phase inversion membranes 有权

    公开(公告)号：US06267916B1

    公开(公告)日：2001-07-31

    申请号：US09412494

    申请日：1999-10-05

    申请人： Mark T Meyering ,  William R. Kelly ,  Joseph G. Wallace

    发明人： Mark T Meyering ,  William R. Kelly ,  Joseph G. Wallace

    IPC分类号： B29C6720

    CPC分类号： B01D71/56 ,  B01D67/0009 ,  B01D67/0011 ,  B01D69/02 ,  B01D2323/12 ,  B01D2325/34

    摘要： Systems and methods for processing dope for the manufacture of microporous phase inversion membrane having any one of a plurality of different pore sizes from a single master dope batch is disclosed. The systems and methods include formulating a single master batch of dope preferably maximizing the non-solvent to solvent ratio for a given weight percentage of polymer for use in a microporous phase inversion membrane casting operation to produce phase inversion membranes having one of a plurality of different predetermined pore sizes. The master dope batch is controllably formulated in a vessel such that the temperature of the dope does not exceed a predetermined maximum mixing temperature and is maintained at a relatively low temperature (lower than the mixing temperature) suitable for storage. A small portion of the dope is then sequentially heated to a temperature no higher than any one of a plurality of target temperatures, the target temperature corresponding to a specific desired pore size to be formed in the microporous phase inversion membrane that results from casting the dope. As portions of the dope are incrementally transferred from the vessel to the dope casting apparatus, the dope portions are heated to a temperature no higher than within about −0.15° C. of the target temperature. The dope is then cooled to about room temperature or the temperature which results in a suitable and/or optimal casting viscosity and transferred to the dope casting apparatus to be forming microporous phase inversion membrane having any one of a plurality of different possible pore sizes. The incremental heating method is also effective for reprocessing a dope to produce a plurality of possible microporous phase inversion membranes having any one of a plurality of possible pore sizes as long as the dope is reprocessed at a temperature higher than the maximum temperature to which the dope was exposed during formulation and previous processing.