Disclosed is a cyclic carbodiimide compound useful as an end-capping agent for polymer compounds. The cyclic carbodiimide compound is represented by the following formula (i):
wherein X is a specific divalent group or tetravalent group, q is 0 when X is a divalent group, while q is 1 when X is a tetravalent group, and Ar
1
to Ar
4
are selected from aromatic groups each independently optionally substituted with a group that serves as X.
揭示了一种循环
脲醛化合物,可用作聚合物化合物的末端封端剂。该循环
脲醛化合物由以下式(i)表示:其中X是特定的二价基团或四价基团,当X是二价基团时,q为0,而当X是四价基团时,q为1,Ar1至Ar4选择自各自独立地可选择地取代为X的基团的芳香族基团。