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31 条记录 (耗时 0.032 秒)

    Free radical polymerization method
    25.
    发明授权
    Free radical polymerization method 失效
    自由基聚合法

    公开(公告)号：US06224949B1

    公开(公告)日：2001-05-01

    申请号：US09096004

    申请日：1998-06-11

    申请人： Robin E. Wright ,  George F. Vesley

    发明人： Robin E. Wright ,  George F. Vesley

    IPC分类号： C08F248

    CPC分类号： C09J143/04 ,  C08F2/50 ,  C08F290/06 ,  C08F290/061 ,  C08F290/068 ,  C08F290/14 ,  C08F290/141 ,  C08F290/148 ,  C09D4/00 ,  C09D4/06 ,  C09D143/00 ,  C09J2400/228 ,  Y10T428/2839 ,  Y10T428/31504 ,  C08F230/08

    摘要： In one aspect the invention provides an energy efficient polymerization method comprising irradiating a polymerizable composition and a photoinitiator with a source of essentially monochromatic radiation where the photoinitiator and the wavelength of the radiation source are selected such that the extinction coefficient of the photoinitiator at the peak wavelength of the source is greater than about 1000 M−1 cm−1 and such that the photoinitiator absorbs at least two percent of the actinic radiation incident on the coating. In another aspect the invention provides energy efficient methods of polymerizing polymerizable compositions and crosslinking crosslinkable compositions by irradiating the respective compositions with a low power source of essentially monochromatic radiation. The low power energy sources have an input power of less than about 10 W/cm. Articles made from the above methods, including polymer films having release coatings, adhesive coatings, hard coatings and the like thereon, also are provided.

    摘要翻译： 在一个方面，本发明提供了一种能量有效的聚合方法，其包括用基本上单色辐射源照射可聚合组合物和光引发剂，其中光引发剂和辐射源的波长被选择为使得光引发剂在峰值波长处的消光系数 的源大于约1000M-1cm -1，并且使得光引发剂吸收入射在涂层上的至少2％的光化辐射。另一方面，本发明提供了聚合可聚合组合物和交联可交联组合物的能量有效的方法 通过用基本上单色辐射的低功率源照射各组合物。 低功率能源的输入功率小于约10W / cm。还提供了由上述方法制成的制品，包括其上具有剥离涂层的聚合物膜，粘合剂涂层，硬涂层等。

    Polymer-dispersed liquid crystal device having an ultraviolet-polymerizable matrix and a variable optical transmission and a method for preparing same
    26.
    发明授权
    Polymer-dispersed liquid crystal device having an ultraviolet-polymerizable matrix and a variable optical transmission and a method for preparing same 失效
    具有紫外线聚合性基体和可变光透射率的聚合物分散型液晶装置及其制备方法

    公开(公告)号：US5867238A

    公开(公告)日：1999-02-02

    申请号：US698443

    申请日：1996-08-19

    申请人： Stephen A. Miller ,  William A. Huffman ,  Laurence R. Gilbert ,  George F. Vesley

    发明人： Stephen A. Miller ,  William A. Huffman ,  Laurence R. Gilbert ,  George F. Vesley

    IPC分类号： G02F1/1333

    CPC分类号： G02F1/1333

    摘要： A polymer-dispersed liquid crystal device comprises a multiplicity of droplets of a birefringent, functionally nematic liquid crystal material dispersed in a matrix comprising the reaction product of ultraviolet radiation polymerizable materials. The device specularly transmits incident light as a function of the magnitude of an electric field applied across the device. The difference between a first applied voltage corresponding to a first percentage of the total incident light transmitted by the device as specular light and a second applied voltage corresponding to a second percentage of the total incident light transmitted by the device as specular light is greater than or equal to 15 volts. As a result, a polymer-dispersed liquid crystal device according to the invention displays a variable grey scale which has a uniform optical transmission. A method for preparing a PDLC device in general is also disclosed.

    摘要翻译： 聚合物分散液晶装置包括分散在包含紫外线可聚合材料的反应产物的基体中的双折射功能向列型液晶材料的多个液滴。 器件根据施加在器件上的电场的幅度，镜像地透射入射光。 对应于由器件作为镜面光透射的总入射光的第一百分比的第一施加电压与对应于由器件作为镜面光透射的总入射光的第二百分比的第二施加电压之间的差大于或等于 等于15伏。 结果，根据本发明的聚合物分散液晶装置显示出具有均匀光透射的可变灰度级。 通常还公开了制备PDLC器件的方法。