会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 59. 发明申请
    • Copolyetherimides
    • 共聚酰亚胺
    • US20070043203A1
    • 2007-02-22
    • US11210164
    • 2005-08-22
    • Qing YeDavid HallWilliam RichardsDaniel BrunelleHavva Acar
    • Qing YeDavid HallWilliam RichardsDaniel BrunelleHavva Acar
    • C08G69/08
    • C08G73/1046C08G73/124
    • Copolyetherimides compositions having high glass transition temperatures and outstanding ductility are presented. The copolyetherimides having Mw of at least 40,000 comprising isomeric bis(phthalimide) structural units within a relatively narrow range of isomer proportions exhibited Tgs of at least 240° C. and outstanding Notched Izod values. The copolyetherimides comprise oxydianiline residues and structural units of the formulas (I) and (II) (III). The copolyetherimides are characterized by a mole percentage of structural units derived from 4,4′-biphenol in a range from about 55% to about 85% of all bisphenol-derived structural units present in the copolyetherimide composition; a mole percentage of structural units derived from bisphenol A in a range from about 45% to about 15% of all bisphenol-derived structural units present in the copolyetherimide composition; and a total mole percentage of structural units derived from bisphenol A or 4,4′-biphenol of at least 95% of all bisphenol-derived structural units present in the copolyetherimide composition.
    • 提出了具有高玻璃化转变温度和优异延展性的共聚酰亚胺组合物。 具有至少40,000的含有异构双(邻苯二甲酰亚胺)结构单元的异构体双组分(邻苯二甲酰亚胺)结构单元的共聚醚酰亚胺具有至少240℃的Tg和优异的缺口伊佐德值。 共聚醚酰亚胺包括氧化二苯胺残基和式(I)和(II)(III)的结构单元。 共聚醚酰亚胺的特征在于衍生自4,4'-联苯酚的结构单元的百分比在共聚醚酰亚胺组合物中存在的所有双酚衍生的结构单元的约55%至约85%的范围内; 来自双酚A的结构单元的摩尔百分比在存在于共聚醚酰亚胺组合物中的所有双酚衍生的结构单元的约45%至约15%的范围内; 并且衍生自双酚A或4,4'-联苯酚的结构单元的总摩尔百分比为存在于共聚醚酰亚胺组合物中的所有双酚衍生的结构单元的至少95%。