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    • 5. 发明授权
    • Nanoporous polymers crosslinked via cyclic structures
    • 通过环状结构交联的纳米多孔聚合物
    • US06172128B2
    • 2001-01-09
    • US09544722
    • 2000-04-06
    • Kreisler LauTian-An ChenRoger Leung
    • Kreisler LauTian-An ChenRoger Leung
    • C08J902
    • C08J3/246C08J9/26C08J2201/046
    • 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).
    • 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)。
    • 10. 发明授权
    • Polymers having backbones with reactive groups employed in crosslinking as precursors to nanoporous thin film structures
    • 具有反应性基团的骨架的聚合物用作交联作为纳米多孔薄膜结构的前体
    • US06313185B1
    • 2001-11-06
    • US09538276
    • 1998-09-24
    • Kreisler LauTian-An ChenRoger Leung
    • Kreisler LauTian-An ChenRoger Leung
    • C08J902
    • C08J9/26C08J2201/046H05K1/0313
    • Nanoporous materials are fabricated from polymers having backbones with reactive groups used in crosslinking. In one aspect of preferred methods and compositions, the reactive groups in the backbone comprise a diene and a dienophile. The diene may advantageously comprise a tetracyclone, and the dienophile may advantageously comprise an ethynyl. In another aspect of preferred methods and compositions, the reactive groups in the backbone are included in a conjugated system. Especially preferred polymeric strands comprise a poly(arylene ether) synthesized from a difluoroaromatic portion and an aromatic bisphenolic portion. It is still more preferred that the difluoroaromatic portions of the poly(arylene ether) are modified in such a way that some difluoroaromatic portions carry a thermolabile portion. In still other aspects crosslinking may advantageously occur without reliance on an exogenous crosslinker.
    • 纳米多孔材料由具有用于交联的反应性基团的主链的聚合物制成。 在优选的方法和组合物的一个方面,主链中的反应性基团包含二烯和亲二烯体。 二烯可有利地包含四环,并且亲二烯体可有利地包含乙炔基。 在优选方法和组合物的另一方面,骨架中的反应性基团包括在共轭体系中。 特别优选的聚合物链包含由二氟芳族部分和芳族双酚部分合成的聚(亚芳基醚)。 更优选的是,聚(亚芳基醚)的二氟芳香族部分以使得一些二氟芳香族部分携带不可热热部分的方式被改性。 在其它方面,交联可有利地发生,而不依赖于外源交联剂。