| abstract |
Melt-processible polyester which is optically anisotropic in the melt phase and which consists essentially of the following molar amounts of the recurring units, with the sum of the molar amounts being 100%: (a) about 20 to about 85%, of <IMAGE> (b) about 15 to about 80% of approximately equimolar amounts of <IMAGE> (i) <IMAGE> <IMAGE> (ii) wherein each of X1, X2, X3, and X4 is independently selected from H, Cl, and CH3; Ar is selected from 1,4-phenylene, 1,3-phenylene, 4,4'-oxybiphenylene, 4,4'-biphenylene, and 2,6-naphthylene; Ar1 is selected from <IMAGE> and n is 0 or 1. |