The invention relates to a class of copolymers capable of forming an optically anisotropic melt comprising recurring structural units (a) independently each occurrence selected from the group consisting of Formula I; recurring structural units (b) independently each occurrence selected from the group consisting of Formulas II and III; and optionally recurring structural units (c) independently each occurrence selected from the group consisting of Formula IV: ##STR1## wherein R independently each occurrence is a chemically inert substituent.
本发明涉及一类共聚物,能够形成具有光学各向异性熔体,包括重复结构单元(a),每次独立选择自公式I组成的群体中的一种;重复结构单元(b),每次独立选择自公式II和III组成的群体中的一种;以及可选的重复结构单元(c),每次独立选择自公式IV组成的群体中的一种:##STR1## 其中R每次独立是一种
化学惰性取代基。