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    • 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。
    • 10. 发明授权
    • Process for separating an isotope from a mixture of different isotopes
by using a single laser beam
    • 通过使用单个激光束从不同同位素的混合物中分离同位素的方法
    • US4584072A
    • 1986-04-22
    • US473131
    • 1983-03-07
    • Takashi ArisawaYoichiro MaruyamaYouji SuzukiKazumi Iwamoto
    • Takashi ArisawaYoichiro MaruyamaYouji SuzukiKazumi Iwamoto
    • B01D59/34B01D59/00C01G43/00
    • B01D59/34
    • A process is, herein, disclosed for separating a particular isotope from a mixture of different isotopes by selective excitation and ionization of the particular isotope with a single laser beam, said process comprising heating the mixture, converting the resulting atomic vapor to a highly directional atomic beam by suitable means, causing said atomic beam to travel through a vacuum, crossing the atomic beam with a high-intensity laser beam having a specific wavelength, selectively exciting the particular isotope with a first photon having that specific wavelength while the other isotopes remaining in the ground state, allowing the excited isotope to absorb a second photon to be excited to a virtual energy level, causing the so excited isotope to absorb a third photon to ionize said isotope, and recovering the ionized isotope by use of an electric or electromagnetic field.
    • 本文公开了一种通过特定同位素与单个激光束的选择性激发和电离来分离特定同位素的混合物的方法,所述方法包括加热混合物,将所得到的原子蒸汽转化成高定向原子 通过合适的方式使所述原子束行进穿过真空,用具有特定波长的高强度激光束穿过原子束,用具有特定波长的第一光子选择性激发特定同位素,而其余同位素保持在 基态,允许激发的同位素吸收要激发到虚拟能级的第二光子,使得如此激发的同位素吸收第三光子以离子化所述同位素,并且通过使用电场或电磁场来回收电离的同位素 。