Copolyimides, their preparation and the use thereof
    113.
    发明授权
    Copolyimides, their preparation and the use thereof 失效
    共聚酰亚胺,其制备及其用途

    公开(公告)号:US5198316A

    公开(公告)日:1993-03-30

    申请号:US899401

    申请日:1992-06-17

    摘要: Mixtures of salts of organic dicarboxylic acids and organic compounds of non-salt character, dissolved in a C.sub.1 -C.sub.4 alkanol, can be concentrated or separated with a semipermeable membrane made from a copolyimide which contains a first aromatic diamine radical (1) and a second aromatic diamine radical (2) which carries --SO.sub.3 M groups, wherein M is H.sym., a mono-to trivalent metal cation or an ammonium cation. The first amine radical (1) and/or the second diamine radical (2) contains C.sub.1 -C.sub.4 alkyl groups in both o-positions to at least one amino group. These copolyamides are also radiation-sensitive (self-crosslinking) and can be used for the production of protective layers or relief images, development being carried out in an aqueous alkaline medium.

    摘要翻译: 溶解在C1-C4链烷醇中的有机二羧酸盐和非盐性有机化合物的混合物可以用由含有第一芳族二胺基团(1)和第二芳族二胺基团(1)的共聚酰亚胺制成的半透膜来浓缩或分离, 携带-SO 3 M基团的芳族二胺基(2),其中M为H(+),一价至三价金属阳离子或铵阳离子。 第一胺基(1)和/或第二二胺基(2)在两个至少一个氨基的两个位置都含有C 1 -C 4烷基。 这些共聚酰胺也是辐射敏感的(自交联),并且可以用于生产保护层或浮雕图像,显影在含水碱性介质中进行。