| 摘要 |
Described herein are thermoplastic linear polymers containing recurring units of the formulae: <IMAGE> (I) <IMAGE> (II) <IMAGE> (III) wherein R is independently hydrogen, C1 to C6 alkyl, or C4 to C8 cycloalkyl, a is an integer of 0 to 4, Z is independently <IMAGE> -SO-, -S-, -SO2-, -O-, alkylene, cycloalkylene, arylene, alkylidene, or cycloalkylidene containing from 2 to 20 carbon atoms, with the proviso that Z cannot be <IMAGE> when the connecting ether bonds are in the para position to Z; n is independently an integer of from 1 to 5. The units are attached to each other by an -O- bond. Also, described herein is a process for preparing such polymers.
|
