会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 6. 发明申请
    • Cycloolefin copolymer obtained by ring-opening polymerization, use thereof, and process for producing retardation plate comprising the copolymer
    • 通过开环聚合获得的环烯烃共聚物,其用途和包含该共聚物的相位差板的制造方法
    • US20070179264A1
    • 2007-08-02
    • US11587050
    • 2005-04-20
    • Motoki OkaniwaIchiro KajiwaraYoshimi SuwaYoichiro MaruyamaYuichi Hashiguchi
    • Motoki OkaniwaIchiro KajiwaraYoshimi SuwaYoichiro MaruyamaYuichi Hashiguchi
    • C08F36/00
    • C08G61/06B29C55/06B29K2023/38
    • A cycloolefin copolymer obtained by ring opening polymerization according to the present invention is characterized by comprising a specific structural unit and exhibiting a single peak in a derivative differential scanning calorimetry curve obtained by differential scanning calorimeter (DSC), having a temperature width of the rising part in the peak of 35° C. or below, and having a glass transition temperature (Tg) of 110° C. or above. The cycloolefin copolymer provided by the present invention has excellent heat resistance and optical properties, is suitable for the formation of a film or sheet therefrom, and can be stretched even at a relatively low temperature around the Tg without causing troubles such as cloudiness. A film or sheet comprising the cycloolefin copolymer, which has excellent optical properties and heat resistance and is also suitable for stretching even at a relatively low temperature, is also provided. Further, there are also provided a retardation plate having excellent optical properties and heat resistance and having uniform retardation, and a process for producing the retardation plate.
    • 通过本发明的开环聚合获得的环烯烃共聚物的特征在于包含特定结构单元,并且通过差示扫描量热计(DSC)获得的衍生差示扫描量热法曲线中显示单峰,其具有上升部分的温度宽度 在35℃以下的峰值,玻璃化转变温度(Tg)为110℃以上。 由本发明提供的环烯烃共聚物具有优异的耐热性和光学性能,适用于从其形成膜或片,并且即使在Tg附近的相对低的温度下也可以拉伸,而不会引起诸如浑浊的麻烦。 还提供了包含环烯烃共聚物的薄膜或片材,其具有优异的光学性能和耐热性,并且也适用于即使在较低温度下的拉伸。 此外,还提供了具有优异的光学性能和耐热性并且具有均匀延迟的相位差板以及用于制造延迟板的工艺。