Aromatic cyanate-siloxane
    4.
    发明授权
    Aromatic cyanate-siloxane 失效
    芳香族氰酸酯 - 硅氧烷

    公开(公告)号:US5326893A

    公开(公告)日:1994-07-05

    申请号:US147279

    申请日:1993-10-27

    IPC分类号: C07F7/08 C08G77/388 C07F7/04

    CPC分类号: C07F7/0847 C08G77/388

    摘要: Compounds are prepared which have at least one aromatic cyanate group and at least one organosiloxane moiety per molecule. These compounds when cured possess excellent thermal stability, moisture resistance properties and a low dielectric constant.

    摘要翻译: 制备每分子具有至少一个芳族氰酸酯基团和至少一个有机硅氧烷部分的化合物。 这些化合物固化时具有优异的热稳定性,耐湿性和低介电常数。

    Blends containing cyanate-siloxanes
    5.
    发明授权
    Blends containing cyanate-siloxanes 失效
    含氰酸酯硅氧烷的混合物

    公开(公告)号:US5300591A

    公开(公告)日:1994-04-05

    申请号:US93497

    申请日:1993-07-16

    CPC分类号: C07F7/0847 C08G77/388

    摘要: Blends containing (1) at least one compound containing an average of more than one vicinal aromatic cyanate group per molecule and at least one organosiloxane moiety per molecule and (2) at least one compound containing an average of more than one vicinal aromatic cyanate group per molecule which is substantially free of organosiloxane moieties. The compositions are useful as a component in adhesives, coatings, laminates, composites, encapsulants, filament winding, and molding.

    摘要翻译: 共混物含有(1)至少一种每分子平均具有多于一个邻位芳族氰酸酯基团的化合物和每分子至少一个有机硅氧烷部分,和(2)至少一种含有平均多于一个邻位芳族氰酸酯基团的化合物 基本上不含有机硅氧烷部分的分子。 该组合物可用作粘合剂,涂料,层压材料,复合材料,密封剂,纤维缠绕和模塑中的组分。

    Rubber modified epoxy resins
    7.
    发明授权
    Rubber modified epoxy resins 失效
    橡胶改性环氧树脂

    公开(公告)号:US5108824A

    公开(公告)日:1992-04-28

    申请号:US477379

    申请日:1990-02-06

    IPC分类号: C08G59/22 C08G59/30 C08L63/00

    摘要: Epoxy resins have been reacted with a copolymer of a diunsaturated aliphatic compound and acrylonitrile or methacrylonitrile and a siloxane-containing polymer resulting in a rubber modified epoxy resin suitable for use in electrical and electronic component encapsulation formulations which provide such components with improved thermal shock performance. The rubber modified epoxy resins have improved flexural properties with minimal reduction in glass transition temperature.

    摘要翻译: 环氧树脂已经与二不饱和脂族化合物和丙烯腈或甲基丙烯腈和含硅氧烷聚合物的共聚物反应,得到适用于电气和电子元件封装配方的橡胶改性环氧树脂,其提供具有改进的热冲击性能的这些组分。 橡胶改性环氧树脂具有改善的弯曲性能,玻璃化转变温度降低最小。

    Concurrent addition process for preparing high purity epoxy resins
    9.
    发明授权
    Concurrent addition process for preparing high purity epoxy resins 失效
    制备高纯度环氧树脂的同时加成方法

    公开(公告)号:US5028686A

    公开(公告)日:1991-07-02

    申请号:US584954

    申请日:1990-09-18

    IPC分类号: C08G59/02

    CPC分类号: C08G59/02

    摘要: Epoxy resins which are relatively low in total bound halide are prepared by concurrently and continuously adding a mixture of (1) a mixture of an epihalohydrin, a compound containing an average of more than one group reactive with a vicinal epoxide group and a solvent and (2) an aqueous or organic solution of an alkali or alkaline earth metal hydroxide; to (3) a mixture of epihalohydrin and a solvent.

    摘要翻译: 总结合卤化物相对低的环氧树脂通过同时并连续地加入(1)表卤代醇,包含平均多于一个与邻位环氧基团反应的基团的化合物与溶剂的混合物和( 2)碱金属或碱土金属氢氧化物的水溶液或有机溶液; 至(3)表卤代醇与溶剂的混合物。