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    • 3. 发明授权
    • Altering of poss rings
    • 改变可能的环
    • US06770724B1
    • 2004-08-03
    • US09783719
    • 2001-02-16
    • Joseph D. LichtenhanTimothy S. HaddadFrank J. FeherDaravong Soulivong
    • Joseph D. LichtenhanTimothy S. HaddadFrank J. FeherDaravong Soulivong
    • C08G7706
    • C07F7/21C07F7/0876C08G77/04C08G77/045C08G77/38
    • Method is provided for selectively opening rings of polyhedral oligomeric silsesquioxane (POSS) compounds to from functionalized derivatives thereof or new POSS species. Per the inventive method, the POSS compound is reacted with an acid to selectively cleave bonds in the POSS rings to add functionalities thereto for grafting, polymerization or catalysis, to thus form new familes of POSS derived compounds. Also provided are the new compounds so formed. Method is also provided for expanding rings of POSS compounds. Per the inventive method, a POSS compound is reacted with silane reagents to obtain an expanded POSS framework with added Si ring substituends to form new families of POSS compounds. Also provided are the new compounds so formed.
    • 提供了从其官能化衍生物或新的POSS物质选择性地打开多面体低聚倍半硅氧烷(POSS)化合物的环的方法。 按照本发明的方法,POSS化合物与酸反应以选择性地切割POSS环中的键,以便为其接枝,聚合或催化添加官能团,从而形成新的POSS衍生化合物。 还提供了如此形成的新化合物。 还提供了扩展POSS化合物环的方法。 根据本发明的方法,POSS化合物与硅烷试剂反应以获得具有添加的Si环取代基的扩展的POSS框架,以形成新的POSS化合物族。 还提供了如此形成的新化合物。
    • 6. 发明授权
    • Reactive grafting and compatibilization of polyhedral oligomeric silsesquioxanes
    • 多面体低聚倍半硅氧烷的反应性接枝和增容
    • US06933345B1
    • 2005-08-23
    • US10351292
    • 2003-01-23
    • Joseph D. LichtenhanFrank J. FeherJoseph J. SchwabSixun Zheng
    • Joseph D. LichtenhanFrank J. FeherJoseph J. SchwabSixun Zheng
    • C08F8/00C08K5/5419C08K7/00C08L83/00
    • B82Y30/00C08K5/5419C08K7/00C08K2201/011C08L2205/14C08L23/10
    • The nanoscopic dimensions of polyhedral oligomeric silsesquioxanes (POSS) and polyhedral oligomeric silicates (POS) materials ranges from 0.7 nm to 5.0 nm and enables the thermomechanical and physical properties of polymeric materials to be improved by providing nanoscopic reinforcement of polymer chains at a length scale that is not possible by physically smaller aromatic chemical systems or larger fillers and fibers. A simple and cost effective method for incorporating POSS/POS nanoreinforcements onto polymers via the reactive grafting of suitably functionalized POSS/POS entities with polymeric systems amenable to such processes is described. The method teaches that the resulting POSS-grafted-polymers are particularly well suited for alloying agents by nongrafted POSS entitles such as molecular silicas. The successful alloying of POSS-polymers is aided because their interfacial tensions are reduced relative to non-POSS containing systems.
    • 多面体低聚倍半硅氧烷(POSS)和多面体低聚硅酸盐(POS)材料的纳米尺寸范围为0.7nm至5.0nm,并且通过以长度尺度提供聚合物链的纳米级增强,可以改善聚合物材料的热机械和物理性能, 通过物理上较小的芳族化学体系或较大的填料和纤维是不可能的。 描述了通过适当功能化的POSS / POS实体与适合于这种方法的聚合物体系的反应性接枝将POSS / POS纳米增强剂结合到聚合物上的简单且成本有效的方法。 该方法教导得到的POSS接枝聚合物特别适用于通过非接枝POSS权利如分子二氧化硅的合金化剂。 有助于POSS聚合物的成功合金化,因为它们的界面张力相对于不含POSS的体系而降低。