N n'-bis(isomaleimide) polyhydrazides
    3.
    发明授权
    N n'-bis(isomaleimide) polyhydrazides 失效
    N''-BIS(异构酰亚胺)聚异氰酸酯

    公开(公告)号:US3631005A

    公开(公告)日:1971-12-28

    申请号:US3631005D

    申请日:1969-01-29

    发明人: FAN YOU-LING

    IPC分类号: C08G73/08 C08G20/20

    CPC分类号: C08G73/08

    摘要: HIGH MOLECULAR WEIGHT POLYHYDRAZIDES HAVE BEEN PREPARED SUCCESSFULLY BY ALLOWING EQUIMOLAR AMOUNTS OF N,N''-BIS(ISOMALEIMIDE) AND DIHYDRAZIDES TO REACT IN A HIGHLY POPLAR SOLVENT AT ROOM TEMPERATURE. BOTH ALIPHATIC AND AROMATIC POLYHYDRAZIDES ARE AMOROPHOUS RESINS WITH GLASS TRANSITION TEMPERATURES ABOUT 100*C. THEY EXHIBIT EXCELLENT OXYGEN BARRIER PROPERTIES, VERY HIGH DIELECTRIC CONSTANTS AND FAIRLY GOOD MECHANICAL PROPERTIES.