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    CHOLESTERIC LIQUID CRYSTAL COPOLYMERS AND ADDITIVES
    3.
    发明公开
    CHOLESTERIC LIQUID CRYSTAL COPOLYMERS AND ADDITIVES 有权
    液晶共聚物和添加剂胆甾

    公开(公告)号：EP1660612A2

    公开(公告)日：2006-05-31

    申请号：EP04777612.5

    申请日：2004-07-06

    申请人： 3M Innovative Properties Company

    发明人： RADCLIFFE, Marc, D. ,  POKORNY, Richard, J. ,  SPAWN, Terence, D. ,  SOLOMONSON, Steven, D.

    IPC分类号： C09K19/40 ,  C09K19/42

    CPC分类号： C09K19/3852 ,  C09K19/2007 ,  C09K2019/0448 ,  C09K2019/2035 ,  C09K2019/2078 ,  C09K2019/3095 ,  C09K2219/03 ,  Y10T428/10 ,  Y10T428/1036 ,  Y10T428/1041 ,  Y10T428/105

    摘要： A cholesteric liquid crystal composition includes a) a cholesteric liquid crystal compound or a cholesteric liquid crystal precursor; and b) a compound of formula (I), formula (II) or formula (III): where, n is 1, 2, 3, or 4; m is 1, 2, or 3; R is an acrylate, methacrylate, acrylamide, isocyanate, epoxy, or silane; R1 is a (C3-C8) alkylene, (C3-C8) alkenylene, or (C3-C8) alkylyne; R2 is a bond, -O-, -C(O)O-, -O(O)C-, -OC(O)O-, -C(O)N-, -CH=N-, -N=CH-, or -NC(O)-; R3 is a cycloalkylene, cycloalkenylene, heterocyclylene, arylene, or hetroarylene; R4 is a bond, (C1-C8) alkylene, (C2-C8) alkenylene, (C2-C8) alkylyne, carbonyl, -O-, -C(O)O-, -O(O)C-, -OC(O)O-, -C(O)N-, -CH=N-, -N=CH-, or -NC(O)-; R5 is a bond, cycloalkylene, cycloalkenylene, hetrocyclylene, arylene, or hetroarylene; R6 is hydrogen, cyano, halo, (C1-C8) alkoxy, (C1-C8) alkyl, nitro, amino, carboxy, mercapto, (C1-C4)thioalkyl, COCH3, CF3, OCF3, or SCF3; R7 is a (C1-C2) alkylene, (C2) alkenylene, or (C2) alkylyne; R8 is is hydrogen, halo, (C1-C8) alkoxy, (C1-C8) alkyl, nitro, amino, carboxy, mercapto, (C1-C4)thioalkyl, COCH3, CF3, OCF3, or SCF3, R9 is a cycloalkylene, cycloalkenylene, heterocyclylene, arylene, or hetroarylene; and R10 is a (C1-C8) alkylene, (C2-C8) alkenylene, or (C2-C8) alkylyne.

    OPTICAL BODIES CONTAINING CHOLESTERIC LIQUID CRYSTAL MATERIAL AND METHODS OF MANUFACTURE
    6.
    发明授权
    OPTICAL BODIES CONTAINING CHOLESTERIC LIQUID CRYSTAL MATERIAL AND METHODS OF MANUFACTURE 有权
    光学体THAT胆甾液晶材料用于生产容纳和方法

    公开(公告)号：EP1370902B1

    公开(公告)日：2008-05-14

    申请号：EP01989790.9

    申请日：2001-11-29

    申请人： 3M Innovative Properties Company

    发明人： POKORNY, Richard, J. ,  RADCLIFFE, Marc, D. ,  WATSON, Philip, E. ,  BOWLEY, Christopher, C. ,  EBIHARA, Ikuko

    IPC分类号： G02F1/1335 ,  G02B5/30

    CPC分类号： G02B5/3016

    摘要： An optical body includes a substrate and a cholesteric liquid crystal layer disposed on the substrate. The cholesteric liquid crystal layer has a non-uniform pitch along a thickness direction of the layer and comprises a crosslinked polymer material that substantially fixes the cholesteric liquid crystal layer. The crosslinking hinders diffusion of cholesteric liquid crystal material within the cholesteric liquid crystal layer. In other methods of making an optical body, a reservoir of chiral material is provided during the process over a first cholesteric liquid crystal layer to diffuse into the layer and provide a non-uniform pitch. Alternatively, two coating compositions can be disposed on a substrate where the material of the first coating composition is not substantially soluble in the second coating composition.

    CHOLESTERIC LIQUID CRYSTAL DRYING PROCESS AND SOLVENT
    8.
    发明公开
    CHOLESTERIC LIQUID CRYSTAL DRYING PROCESS AND SOLVENT 有权
    干燥过程和溶剂胆甾相液晶

    公开(公告)号：EP1597337A1

    公开(公告)日：2005-11-23

    申请号：EP04701469.1

    申请日：2004-01-12

    申请人： 3M Innovative Properties Company

    发明人： SOLOMONSON, Steven, D. ,  RADCLIFFE, Marc, D. ,  POKORNY, Richard, J.

    IPC分类号： C09K19/52

    CPC分类号： C09K19/52

    摘要： The invention provides methods of forming a cholesteric liquid crystal layer that include forming a cholesteric liquid crystal composition, depositing the cholesteric liquid crystal composition onto a substrate, and initially drying the cholesteric liquid crystal composition at a temperature at or below about 90 °C so that the cholesteric liquid crystal composition has at least 80 % solids remaining. The invention also provides methods of forming a cholesteric liquid crystal layer that include forming a cholesteric liquid crystal composition, depositing the cholesteric liquid crystal composition onto a substrate, and initially drying the cholesteric liquid crystal composition at a temperature at or below about 90 °C, wherein the drying is accomplished using a technique that provides little or no airflow. The invention further provides a cholesteric liquid crystal composition that includes at least one cholesteric liquid crystal precursor and 1,3-dioxolane.