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    • 11. 发明授权
    • Blends of polyether sulfones and polyimides
    • 聚醚砜和聚酰亚胺的共混物
    • US5191035A
    • 1993-03-02
    • US768009
    • 1991-09-30
    • M. Jamal El-HibriJames E. HarrisJohn L. Melquist
    • M. Jamal El-HibriJames E. HarrisJohn L. Melquist
    • C08L71/00C08L79/08
    • C08L71/00C08L79/08
    • Blends of a polyether sulfone and the polyimide of the dianhydride sulfonyl bis(phthalic anhydride) ("SPAN") and the diamine 1,4-bis(p-aminocumyl)benzene ("BAP"). The blends will comprise from about 10 to about 90 wt % polyether sulfone, preferably greater than about 50 wt % polyether sulfone, based on the total weights of polyether sulfone and polyimide. The blends exhibit good toughness and improved thermal performance over polyether sulfone alone while remaining readily processable, and have good mechanical properties including unexpectedly high stiffness as determined by high tensile modulus values. Blends of this invention also are surprisingly miscible, defined as exhibiting a single Tg value.
    • 聚醚砜与二酐磺酰基双(邻苯二甲酸酐)(“SPAN”)和二胺1,4-双(对氨基辛基)苯(“BAP”)的聚酰亚胺的共混物。 基于聚醚砜和聚酰亚胺的总重量,共混物将包含约10至约90重量%的聚醚砜,优选大于约50重量%的聚醚砜。 共混物表现出优异的韧性和相对于聚醚砜的热性能,同时保持易于加工,并且具有良好的机械性能,包括由高拉伸模量值确定的出乎意料的高刚度。 本发明的共混物也令人惊奇地是可混溶的,定义为表现出单一的Tg值。