The effects of different blocking agents, the mol ratio (nH: nNCO), reaction temperature and time on block reaction were studied.

　
英 美
  • 討論了封閉劑種類(lèi)，活性氫與異氰酸酯基團的量之比、反應溫度、反應時(shí)間對封閉反應的影響；
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