Process of rheology modification of polymers
    63.
    发明授权
    Process of rheology modification of polymers 有权
    聚合物流变改性工艺

    公开(公告)号:US06359073B1

    公开(公告)日:2002-03-19

    申请号:US09694649

    申请日:2000-10-23

    IPC分类号: C08F800

    摘要: The invention includes a process of reacting a poly(sulfonyl azide) with a polymer comprising steps (a) forming a first admixture of a first amount of a first polymer or in a liquid which does not require removal from the polymer and a poly(sulfonyl azide); (b) then forming a second admixture of the first admixture with a second amount of at least one second polymer; and (c) heating the second admixture at lest to the decomposition temperature of the coupling agent for a time sufficient to result in coupling of polymer chains. The invention further includes all compositions obtainable by processes of the invention as well as blends of those compositions with one or more polymers of compositions different from the first or second polymer or the product of a process of the invention. Additionally the invention includes articles made from compositions of the invention, and shaping those articles particularly by processes which comprise shaping the compositions in a melted state into an article, more preferably when the process comprises thermoforming, injection molding, extrusion, casting, blow molding, foaming or blowing as well as the use of the compositions in those processes.

    摘要翻译: 本发明包括使聚(磺酰基叠氮化物)与聚合物反应的方法,包括步骤(a)形成第一量的第一聚合物的第一混合物或不需要从聚合物中除去的液体和聚(磺酰基 叠氮化物); (b)然后形成第一混合物与第二量的至少一种第二聚合物的第二混合物; 和(c)加热第二混合物至少达到偶联剂的分解温度足以导致聚合物链偶联的时间。 本发明还包括可通过本发明的方法获得的所有组合物以及这些组合物与一种或多种不同于第一或第二聚合物或本发明方法的产物的组合物的一种或多种聚合物的共混物。 另外,本发明包括由本发明的组合物制成的制品,并且特别通过包括将熔融状态的组合物成型成制品的方法成型那些制品,更优选当该方法包括热成型,注射成型,挤出,浇铸,吹塑成型, 发泡或吹塑以及在这些方法中使用组合物。

    Alignment layer for a liquid crystal in a liquid crystal display device
    65.
    发明授权
    Alignment layer for a liquid crystal in a liquid crystal display device 失效
    液晶显示装置中的液晶对准层

    公开(公告)号:US5540997A

    公开(公告)日:1996-07-30

    申请号:US402588

    申请日:1995-03-13

    IPC分类号: G02F1/1337 C09K19/56

    摘要: An alignment layer for a liquid crystal display device is described. The alignment layer comprises a copolymer of a thermoset polymer containing perfluorinated cyclobutane rings and a thermoplastic polymer containing perfluorinated cylcobutane rings, or a blend of thermoset and thermoplastic homopolymers or copolymers containing perfluorinated cyclobutane rings.This copolymer or blend provides an alignment layer with a cure temperature of less than 250.degree. C., a low dielectric, and a low moisture content. The resultant alignment layer can also provide surface tilt angles suitable for supertwisted nematic-liquid crystal displays.

    摘要翻译: 对液晶显示装置的取向膜进行说明。 取向层包含含有全氟化环丁烷环的热固性聚合物和含有全氟化环丁烷环的热塑性聚合物的共聚物,或含有全氟化环丁烷环的热固性和热塑性均聚物或共聚物的共混物。 该共聚物或共混物提供具有小于250℃,低电介质和低含水量的固化温度的取向层。 所得到的取向层还可以提供适用于超扭曲向列型液晶显示器的表面倾斜角度。