As the isocyan group is polymerized further, diphenyl carbondiimine may be formed, further polymerization of which forms a nitrogen-containing polycyclic aromatic compound.
异氰基化合物进一步二聚成二苯基碳化二亚胺，后者又聚合生成
环的
环芳
。
As the isocyan group is polymerized further, diphenyl carbondiimine may be formed, further polymerization of which forms a nitrogen-containing polycyclic aromatic compound.
异氰基化合物进一步二聚成二苯基碳化二亚胺，后者又聚合生成环的环芳。
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