Mesogen-containing aromatic anhydride compounds
    22.
    发明授权
    Mesogen-containing aromatic anhydride compounds 失效
    含有含元素的芳族酸酐化合物

    公开(公告)号:US5412057A

    公开(公告)日:1995-05-02

    申请号:US196670

    申请日:1994-02-15

    摘要: Anhydride compounds which contain at least one rodlike mesogenic moiety and at least two anhydride groups per molecule, wherein each of said aromatic anhydride groups is linked to the mesogen via an ester linkage are prepared. These anhydride compounds are useful in curing epoxy resins to provide the cured products with one or more improved properties.

    摘要翻译: 制备含有至少一个棒状介晶部分和每分子至少两个酸酐基团的酐化合物,其中每个所述芳族酸酐基团通过酯键连接到介晶。 这些酸酐化合物可用于固化环氧树脂以提供具有一种或多种改进性能的固化产物。

    Polycyanates containing mesogenic moieties as lateral substituents
    23.
    发明授权
    Polycyanates containing mesogenic moieties as lateral substituents 失效
    含有介晶部分作为侧向取代基的聚氰酸酯

    公开(公告)号:US5374769A

    公开(公告)日:1994-12-20

    申请号:US996457

    申请日:1992-12-24

    CPC分类号: C08L79/04 C08G73/0655

    摘要: Novel polycyanate compositions containing one or more mesogenic moieties as lateral substituents are disclosed which provide improved processability relative to polycyanates containing one or more mesogenic moieties in the main chain of the molecule. Molecular level ordering of the resulting thermosets is maintained much similar to that found thermosets of polycyanates which have one or more mesogenic moieties in the main chain.

    摘要翻译: 公开了含有一个或多个介晶部分作为侧向取代基的新型聚氰酸酯组合物,其相对于在分子主链中含有一个或多个介晶部分的聚氰酸酯提供了改进的加工性能。 所得热固性材料的分子水平排列保持非常类似于在主链中具有一个或多个介晶部分的聚氰化物的热固性物质。

    Epoxy resins containing thiadiazole and/or oxadiazole moieties
    30.
    发明授权
    Epoxy resins containing thiadiazole and/or oxadiazole moieties 失效
    含有噻二唑和/或恶二唑部分的环氧树脂

    公开(公告)号:US5387657A

    公开(公告)日:1995-02-07

    申请号:US236592

    申请日:1994-04-28

    CPC分类号: C08G59/26 C09K19/3823

    摘要: Epoxy resins containing more than one vicinal epoxide group per molecule and at least one thiadiazole, oxadiazole or both thiadiazole and oxadiazole moiety per molecule are disclosed, as well as curable and cured compositions thereof. Certain of these epoxy resins possess enantiotropic liquid crystallinity. These enantiotropic epoxy resins are useful in preparing copolymers with high glass transition temperatures and liquid crystalline morphology, which can result in enhanced unidirectional mechanical properties. These epoxy resins are useful in coating, casting, encapsulation, electronic or structural laminate or composite, filament winding or molding applications.

    摘要翻译: 公开了每分子含有多于一个邻位环氧基团的环氧树脂以及每个分子至少一个噻二唑,恶二唑或噻二唑和恶二唑部分,以及其可固化和固化的组合物。 这些环氧树脂中的某些具有对映体液晶性。 这些对映性环氧树脂可用于制备具有高玻璃化转变温度和液晶形态的共聚物,这可导致增强的单向力学性能。 这些环氧树脂可用于涂料,浇铸,封装,电子或结构层压板或复合材料,长丝缠绕或模塑应用。