A raw rubber for millable polyether polyurethane elastomer was prepared.

研制一种新的氨酯生胶。

The mass spectra of ureide-type noncyclic polyethers with 2(3H)-benzoxazolone as end groups were studies.

研究以2（3H）-苯并唑酮为端、有酰脲结构的非环多化合物的质谱。