Fluorine-containing polyamide
    13.
    发明授权
    Fluorine-containing polyamide 失效
    含氟聚酰胺

    公开(公告)号:US6103860A

    公开(公告)日:2000-08-15

    申请号:US332534

    申请日:1999-06-14

    摘要: There is disclosed an organic optical component prepared from a resin essentially comprising one or more repetitive structural units selected from the group consisting of structures represented by general formula (1); ##STR1## wherein A is either of the groups below. ##STR2## This invention provides an organic optical component with excellent transparency, heat resistance and mechanical strength as well as a low birefringence. This invention also provides a novel aromatic polyamide with a low permitivity and excellent transparency, processability and thermal stability, besides excellent heat resistance inherent in an aromatic polyamide.

    摘要翻译: 公开了一种由基本上包含一个或多个重复结构单元的树脂制备的有机光学组件,所述重复结构单元选自由通式(1)表示的结构; 其中A是下面的组之一。 本发明提供了具有优异的透明性,耐热性和机械强度以及低双折射性的有机光学部件。 本发明还提供了芳香族聚酰胺固有的耐热性优异的低介电常数和优异的透明性,加工性和热稳定性的芳香族聚酰胺。

    Process for preparing isoimides
    14.
    发明授权
    Process for preparing isoimides 失效
    制备异酰亚胺的方法

    公开(公告)号:US5892061A

    公开(公告)日:1999-04-06

    申请号:US975506

    申请日:1997-11-21

    摘要: A preparation process of isoimide comprising reacting a compound having one or more carboxyl group and one or more amide bond in the same molecule in the presence of a haloiminium salt and basic substance, and a preparation process of isoimide comprising reacting a compound having one or more carboxyl group with a compound having one or more amide bond in the presence of a haloiminium salt and basic substance are disclosed.

    摘要翻译: 包括使异氰化物的制备方法包括在卤代亚铵盐和碱性物质的存在下使具有一个或多个羧基的化合物和一个或多个酰胺键与同一分子中的一个或多个酰胺键反应,以及异酰胺的制备方法,包括使具有一个或多个 公开了在卤代鎓盐和碱性物质存在下具有一个或多个酰胺键的化合物的羧基。

    Polyimide resin compositions for optical filters
    18.
    发明授权
    Polyimide resin compositions for optical filters 失效
    用于光学滤光片的聚酰亚胺树脂组合物

    公开(公告)号:US5868968A

    公开(公告)日:1999-02-09

    申请号:US965195

    申请日:1997-11-06

    摘要: A polyimide resin composition for an optical filter which includes a colorless transparent polyimide resin containing at least one perfluoroalkyl group in each recurring structural unit and having excellent solvent solubility, and at least one dyestuff soluble in said resin. The dyestuff has absorption in the visible range and/or the near infrared range. A printing ink for an optical filter is composed of the polyimide resin composition and a solvent while an optical filter formed from a transparent base material and the polyimide resin composition can also be provided.

    摘要翻译: 一种滤光器用聚酰亚胺树脂组合物,其包含在每个重复结构单元中含有至少一个全氟烷基并且溶剂溶解性优异的无色透明聚酰亚胺树脂和至少一种可溶于所述树脂的染料。 染料在可见光范围和/或近红外范围内具有吸收。 用于滤光器的印刷油墨由聚酰亚胺树脂组合物和溶剂构成,同时也可以提供由透明基材形成的滤光器和聚酰亚胺树脂组合物。