A raw rubber for millable polyether polyurethane elastomer was prepared.
研制了一种新型的聚型聚氨酯生胶。
A raw rubber for millable polyether polyurethane elastomer was prepared.
研制了一种新型的聚型聚氨酯生胶。
The mass spectra of ureide-type noncyclic polyethers with 2(3H)-benzoxazolone as end groups were studies.
研究了以2(3H)-苯并唑酮为端基、具有酰脲结构的环化合物的质谱。
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