Nanoporous polymers crosslinked via cyclic structures
    19.
    发明授权
    Nanoporous polymers crosslinked via cyclic structures 失效
    通过环状结构交联的纳米多孔聚合物

    公开(公告)号:US06172128B2

    公开(公告)日:2001-01-09

    申请号:US09544722

    申请日:2000-04-06

    IPC分类号: C08J902

    摘要: Nanoporous polymeric materials are fabricated in which polymeric strands are crosslinked via ring structures. Preferred ring structures are formed de novo during crosslinking, and at least some of the ring structures are preferably included in the backbones of the strands. At least one of the ring structures may advantageously comprise an aromatic structure, and may more advantageously comprise a benzyl moiety. Especially preferred polymers comprise a poly(arylene ether) synthesized from a difluoroaromatic portion and an aromatic bisphenolic portion. In another preferred aspect, the difluoroaromatic portions of the poly(arylene ether) carry at least two different crosslinking functionalities. In an even more preferred aspect, the crosslinking functionalities comprise an ethynyl and a tetracyclone. Nanoporosity is preferably introduced by thermolyzing one or more thermolabile portions in the crosslinked polymer. An especially preferred thermolabile portion comprises ethylene glycol-poly(caprolactone).

    摘要翻译: 制造纳米多孔聚合材料,其中聚合物链通过环结构交联。 优选的环结构在交联期间从头形成,并且至少一些环结构优选包含在该链的主链中。 至少一个环结构可以有利地包含芳族结构,并且可以更有利地包含苄基部分。 特别优选的聚合物包括由二氟芳族部分和芳族双酚部分合成的聚(亚芳基醚)。 在另一个优选的方面,聚(亚芳基醚)的二氟芳香族部分携带至少两种不同的交联官能团。 在更优选的方面,交联官能团包括乙炔基和四环。 优选通过热交换聚合物中的一个或多个热不稳定部分来引入纳米孔。 特别优选的耐热不稳定部分包括乙二醇 - 聚(己内酯)。

    Nanoporous material fabricated using polymeric template strands
    20.
    发明授权
    Nanoporous material fabricated using polymeric template strands 失效
    使用聚合物模板链制造的纳米多孔材料

    公开(公告)号:US6156812A

    公开(公告)日:2000-12-05

    申请号:US544723

    申请日:2000-04-06

    IPC分类号: C08J9/26 C08J9/02

    CPC分类号: C08J9/26 C08J2201/046

    摘要: Compositions and methods are provided in which nanoporous polymeric materials are produced via stable, polymeric template strands having reactive groups that can be used for forming crosslinking functionalities and/or adding thermolabile groups, wherein at least some of the thermolabile groups are thermolyzed to produce voids. The template strands preferably comprise aromatic systems and vicinal keto groups, such as a polybenzil formed from fluorene bisphenol or 3,3'-dihydroxytolane with 4,4'-difluorobenzil. At least some of the reactive groups preferably react using an addition-elimination reaction. Especially preferred thermolabile groups comprise poly(propylene oxide), and especially preferred crosslinkers comprise ethynyl-moiety and tetracyclone moieties.

    摘要翻译: 提供了组合物和方法,其中纳米多孔聚合物材料通过具有可用于形成交联官能团和/或添加不耐热基团的反应性基团的稳定的聚合物模板链产生,其中至少一些不耐热基团被热分解以产生空隙。 模板链优选包含芳族体系和连位酮基,例如由芴双酚或3,3'-二羟基乙内酯与4,4'-二氟苯甲醛形成的聚苯乙烯。 至少一些反应性基团优选使用加成 - 消除反应进行反应。 特别优选的热不稳定基团包括聚(环氧丙烷),并且特别优选的交联剂包括乙炔基部分和四环酮部分。