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    • 8. 发明授权
    • o,o'-bismaleimide resin systems
    • o,双马来酰亚胺树脂体系
    • US5206383A
    • 1993-04-27
    • US827182
    • 1992-01-28
    • Raymond J. Swedo
    • Raymond J. Swedo
    • C07D207/44C07D207/452C07F7/08C08G73/12
    • C07D207/452C07F7/0854C08G73/124C08G73/125
    • This invention concerns novel o,o'-bismaleimide resins which have good processibility, novel o,o'-diamines used to prepare the resins, and the novel o,o'-bismaleimide polymers prepared by curing these resins. The polymers have thermo-oxidative and tensile properties which rival conventional p,p'- and m,m'-bismaleimide resin systems.The o,o'-bismaleimide resins of this invention have the following structure: ##STR1## wherein Y--G--Y is a bridging group with Y selected from the group consisting of oxygen, sulfur, and selenium, and G selected from a number of structures having aromatic and/or siloxane character. R.sub.a and R.sub.b are independently selected from the group consisting of hydrogen, an alkyl containing up to 4 carbon atoms, the corresponding alkoxy groups, chlorine, and bromine, or R.sub.a and R.sub.b together form a fused 6-membered aromatic ring.
    • 本发明涉及具有良好加工性的新型o,双马来酰亚胺树脂,用于制备树脂的新型o,o-二胺和通过固化这些树脂制备的新型o,o-双马来酰亚胺聚合物。 聚合物具有与常规p,p'-和m,m'-双马来酰亚胺树脂体系相当的热氧化和拉伸性能。 本发明的o,o-双马来酰亚胺树脂具有以下结构:其中YGY是选自氧,硫和硒的Y的桥连基团,G选自多个具有芳族化合物的结构 和/或硅氧烷特性。 R a和R b独立地选自氢,含有最多4个碳原子的烷基,相应的烷氧基,氯和溴,或者R a和R b一起形成稠合的6元芳族环。