申请人:POLAROID CORPORATION
公开号:EP0061026A1
公开(公告)日:1982-09-29
Polyamides comprising recurring units
wherein A and B are divalent radicals, except that B can represent a single bond; R and R' are each hydrogen, alkyl, aryl, alkaryl or aralkyl; and c = 0 or 1; and wherein, when c is one, at least one of A and B is a substituted-quaterphenylene radical
where each U is a substituent otherthan hydrogen, each W is hydrogen or other substituent, each p = 1 - 3, each X is hydrogen or another substituent and each r = 1 - 4, the U, W and Xr substitution providing the radical with a non-coplanar molecular configuration; and wherein, when c is zero, A is a substituted-quaterphenylene radical.
The polyamides exhibit solubility in select (e.g. non-amide type) solvents and have high electron density substantially cylindrically distributed about their long axis. The molecularly oriented polymers are optically uniaxial and are useful e.g. in optical filter devices.
由循环单元组成的聚酰胺
其中 A 和 B 是二价基,但 B 可以代表单键;R 和 R'各自是氢、烷基、芳基、烷芳基或芳烷基;c = 0 或 1;当 c 为 1 时,A 和 B 中至少有一个是取代的四亚苯基基
其中每个 U 是氢以外的取代基,每个 W 是氢或其他取代基,每个 p = 1 - 3,每个 X 是氢或其他取代基,每个 r = 1 - 4,U、W 和 Xr 取代基使自由基具有非共面分子构型;当 c 为 0 时,A 是取代的四亚苯基自由基。
聚酰胺在特定(如非酰胺类)溶剂中具有溶解性,并且电子密度高,基本上围绕长轴呈圆柱形分布。分子取向聚合物具有光学单轴性,可用于光学滤光设备等。