Graft copolymers and a process for their preparation
    4.
    发明授权
    Graft copolymers and a process for their preparation 失效
    接枝共聚物及其制备方法

    公开(公告)号:US5232985A

    公开(公告)日:1993-08-03

    申请号:US772522

    申请日:1991-10-07

    IPC分类号: C08G81/02

    CPC分类号: C08G81/024

    摘要: Higher yields of graft copolymer occur when a catalytic amount of base is present during the grafting reaction. The resulting blends of ungrafted polymer with higher graft-copolymer content exhibit improved toughness and clarity.

    摘要翻译: 在接枝反应过程中当存在催化量的碱时,接枝共聚物的产率较高。 所得到的未接枝聚合物与较高接枝共聚物含量的共混物表现出改进的韧性和透明度。

    Flexible light pipe for side-lit applications
    10.
    发明授权
    Flexible light pipe for side-lit applications 失效
    柔性灯管用于侧光照明应用

    公开(公告)号:US06215947B1

    公开(公告)日:2001-04-10

    申请号:US09552482

    申请日:2000-04-18

    IPC分类号: G02B600

    摘要: An improved optical light pipe for side-lit uses is formed from a core/cladding combination, optionally with a transparent jacket, where the core is preferably a cured acrylic polymer and the cladding is preferably a fluorocarbon polymer containing a very low level of fine particles which scatter the light uniformly along the length of the piping. Further light enhancement can be obtained with low levels of glass fibers or glass microspheres also present in the cladding. Chopped glass fibers alone at low levels in the cladding are useful for back-lit applications. The light pipe so formed is useful in signs, underwater outlines, corridor lighting in theaters, and similar uses.

    摘要翻译: 用于侧光用途的改进的光学光管由芯/包层组合形成,任选地具有透明护套,其中芯优选为固化的丙烯酸聚合物,并且包层优选为含有非常低水平的细颗粒的氟碳聚合物 其沿着管道的长度均匀地散射光。 可以通过在包层中也存在的玻璃纤维或玻璃微球体的低水平获得进一步的光增强。 在包层中单独切割的玻璃纤维在低水平处是有用的背光应用。 如此形成的灯管可用于标志,水下轮廓,剧院走廊照明和类似用途。