| 主权项 |
1. An oligomer comprising as polymerized units a first monomer comprising two cyclopentadienone moieties, a second monomer having the formula (1), and a third monomer having the formula (2)wherein a is the number of R groups and is an integer from 0 to 4; b is 1 or 2; each R is independently chosen from C1-4 alkyl, halo C1-4 alkyl, C1-4 alkoxy, C1-4 aralkyl, and optionally substituted C6-10 aryl; each R1 is independently H or optionally substituted C6-10 aryl; R2 is H, optionally substituted C1-10 alkyl, optionally substituted C7-12 aralkyl, optionally substituted C6-10 aryl, or R3; and R3 is a polar moiety. |
