| 摘要 |
<p>The cpds. were produced by the polymn. of one species selected from the terephthalic, iso-phthalic, o-phthalic acid and 4 - 10C straight dicarboxylic acid gp. or better dicarboxylic acid, aliphatic diol, 6 - 8C ring-type diol or its ester forming derivs. in the presence of Al compd. of formula Al(O-R5)i(OOC-R6)j (O-CR7=CH-CO-R8)k. The constituent units are (I), (II), (III), and (IV); mol ratio (I):(II) = 1:1, (I):(II) = 1000:1 - 100:5, (III):(IV) = 4:1 - 1:10 and intrinsic viscosity is up to 0.5 dl/g.</p> |
