| 摘要 |
<p>A semicarbazide derivative represented by general formula (1) and a terminally blocked derivative thereof (wherein R1 represents a polyisocyanate residue free from a terminal isocyanate group or a triisocyanate residue free from a terminal isocyanate group; R2 represents alkylene, cycloalkylene or arylene; R3s represent each independently hydrogen or alkyl; n represents 0 or 1; and l and m represent each independently 0 or a positive integer, provided 3 « (l+m) « 20) and a coating composition containing both of the above derivatives.</p> |
