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10 条记录 (耗时 0.012 秒)

    Preparation of permselective composite membrane
    4.
    发明授权
    Preparation of permselective composite membrane 失效
    选择性复合膜的制备

    公开(公告)号：US4260652A

    公开(公告)日：1981-04-07

    申请号：US912547

    申请日：1978-06-05

    申请人： Yutaka Taketani ,  Yuzuru Hayashi ,  Takeyuki Kawaguchi ,  Tomoyoshi Ono ,  Ko Mori

    发明人： Yutaka Taketani ,  Yuzuru Hayashi ,  Takeyuki Kawaguchi ,  Tomoyoshi Ono ,  Ko Mori

    IPC分类号： B01D71/62 ,  C08G73/18 ,  B05D5/00 ,  C08J9/26 ,  C08L79/04

    CPC分类号： C08G73/18 ,  B01D71/62 ,  Y10S524/909

    摘要： A process and composition for producing a permselective composite membrane. The process comprises dissolving a specified imidazolone ring-containing aromatic polymer in an aqueous liquid medium containing a water-miscible amine having a pKa of more than 5.0 in a concentration of at least 5% by weight, coating the polymer solution on a microporous substrate, and drying the coating to form an ultrathin film on the substrate. The permselective composite membrane obtained is especially useful as a reverse osomsis membrane.

    摘要翻译： 用于制备渗透选择性复合膜的方法和组合物。 该方法包括将含有咪唑啉酮环的芳族聚合物溶解在含有至少5重量％浓度的pKa大于5.0的水混溶性胺的含水液体介质中，将聚合物溶液涂布在微孔基材上， 并干燥涂层以在基底上形成超薄膜。 获得的选择性复合膜特别适用于反渗透膜。

    Permselective polymeric membrane prepared from polybenzimidazoles
    5.
    发明授权
    Permselective polymeric membrane prepared from polybenzimidazoles 失效
    由聚苯并咪唑制备的选择性聚合物膜

    公开(公告)号：US3951920A

    公开(公告)日：1976-04-20

    申请号：US288389

    申请日：1972-09-12

    申请人： Masao Senoo ,  Shigeyoshi Hara ,  Shuji Ozawa

    发明人： Masao Senoo ,  Shigeyoshi Hara ,  Shuji Ozawa

    IPC分类号： B01D71/62 ,  C08G73/18 ,  C08G33/02 ,  C08G33/04

    CPC分类号： C08G73/18 ,  B01D71/62 ,  Y10S524/909

    摘要： This invention provides a novel permselective polymeric membrane excellent in permselectivity which allows permeation of water in an aqueous solution at a high rate but is highly preventive of permeation of solutes, and a process for the preparation of such permselective membrane, said polymeric membrane consisting essentially of a linear polymer containing N-aryl-substituted-benzimidazole units as the main-chain-constituting units.

    摘要翻译： 本发明提供了一种选择性优异的新型选择性选择性聚合物膜，其允许水以高速率渗透水溶液，但是高度防止溶质渗透，以及制备这种选择性渗透膜的方法，所述聚合物膜基本上由 含有N-芳基取代的苯并咪唑单元作为主链构成单元的线性聚合物。

    Regular copolyamides as desalination membranes
    7.
    发明授权
    Regular copolyamides as desalination membranes 失效
    常规共聚酰胺作为脱盐膜

    公开(公告)号：US3935172A

    公开(公告)日：1976-01-27

    申请号：US471513

    申请日：1974-05-20

    申请人： Otto F. Vogl ,  Donald R. Stevenson

    发明人： Otto F. Vogl ,  Donald R. Stevenson

    IPC分类号： B01D71/56 ,  C08G69/26

    CPC分类号： C08G69/265 ,  B01D71/56 ,  Y10S524/909 ,  Y10T428/31725

    摘要： Regular copolyamides of the formula ##EQU1## WHERE X IS 2 TO 10, Y IS 0 TO 8, R is a divalent aliphatic or aromatic radical having 1 to 34 carbon atoms, and n is not less than 10, are prepared by reacting an aliphatic diester with an excess of an aliphatic diamine to form a diamine diamide, and reacting the diamine diamide intermediate with an aliphatic or aromatic diacid chloride.Permselective membranes prepared from the copolyamides find particular utility in desalination of water by reverse osmosis.

    摘要翻译： 常规共聚酰胺类型OOOO PARALLEL PARALLEL PARALLEL PARALLELHN-（CH2）x-NH-C-（CH2）yC-NH-（CH2）x-NH-CRC- n其中X为2至10，Y为0至 8，R是具有1至34个碳原子并且n不小于10的二价脂族或芳族基团，其通过使脂族二酯与过量的脂族二胺反应形成二胺二酰胺，并使二胺二酰胺 中间体与脂族或芳族二酰氯。

    Polymeric piperazinamides and membranes for reverse osmosis made therefrom
    8.
    发明授权
    Polymeric piperazinamides and membranes for reverse osmosis made therefrom 失效
    聚合的哌嗪酰胺和用于反渗透的膜

    公开(公告)号：US4123424A

    公开(公告)日：1978-10-31

    申请号：US634760

    申请日：1975-11-24

    申请人： Lino Credali ,  Vincenzo Guidotti

    发明人： Lino Credali ,  Vincenzo Guidotti

    IPC分类号： B01D71/56 ,  C08G69/40 ,  C08G69/42 ,  C08G69/26 ,  B01D39/16

    CPC分类号： B01D71/56 ,  C08G69/40 ,  C08G69/42 ,  Y10S524/909

    摘要： Polymeric piperazinamides suitable for use in reverse osmosis membranes. These polymeric piperazineamides consist essentially of the repeating unit ##STR1## wherein x is zero or a whole number from 1 to 8, R is a substituent such as alkyl, and --A-- is a bivalent radical, namely an organic dicarbonyl radical which either is always of the formula ##STR2## wherein X is oxygen or sulfur, and R' and R" are each hydrogen, alkyl, or aryl, or else where some of said radicals --A-- are of formula (III) and the remainder of said radicals --A-- are organic dicarbonyl radicals differing from said formula (III).

    摘要翻译： 适用于反渗透膜的聚合哌嗪酰胺。 这些聚合哌嗪酰胺基本上由重复单元（I）组成，其中x为0或1至8的整数，R为取代基如烷基，-A-为二价基团，即有机二羰基 其总是具有式（III）的式（III），其中X是氧或硫，R'和R“各自是氢，烷基或芳基，或者其中一些所述基团-A-具有式 III），所述基团的其余部分-A是与所述式（III）不同的有机二羰基。