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    • 91. 发明授权
    • Method of producing organopolysiloxane with low polymerization degree
    • 低聚合度的有机聚硅氧烷的制备方法
    • US5563229A
    • 1996-10-08
    • US463785
    • 1995-06-05
    • Hideyuki KawamotoHisashi Aoki
    • Hideyuki KawamotoHisashi Aoki
    • C07F7/08C08G77/04C08G77/06C08G77/08
    • C08G77/045C07F7/0874
    • There is provided a method of producing an organopolysiloxane with a low polymerization degree in a high yield, comprising a step of allowing a monochlorosilane represented by the following general formula (I) and hexamethylcyclotrisiloxane to undergo ring-opening reaction in the presence of a quaternary ammonium salt represented by the following general formula (II) and a step of hydrolyzing the reaction product: ##STR1## wherein R groups are the same or different, and each group represents an alkyl group containing 1 to 18 carbon atoms, an aryl group or a hydrogen atom;R.sup.1.sub.4 N.sup.+ X.sup.31 (II)wherein R.sup.1 groups are the same or different, each group representing an alkyl group containing 1 to 18 carbon atone, and X- represents an anion.
    • 提供了以高收率生产低聚合度的有机聚硅氧烷的方法,包括使下述通式(I)表示的一氯硅烷和六甲基环三硅氧烷在季铵盐存在下进行开环反应的步骤 由下列通式(II)表示的盐和水解反应产物的步骤:其中R基团相同或不同,并且各基团表示含有1至18个碳原子的烷基,芳基 基团或氢原子; R14N + X31(II)其中R1基团相同或不同,每个基团代表含有1至18个碳原子的烷基,X-表示阴离子。
    • 97. 发明授权
    • Drive method for a dual-frequency, dielectric anisotropy liquid crystal
optical device
    • 双频,介电各向异性液晶光学器件的驱动方法
    • US4836654A
    • 1989-06-06
    • US066720
    • 1987-06-24
    • Koh FujimuraMasakatsu HigaHisashi Aoki
    • Koh FujimuraMasakatsu HigaHisashi Aoki
    • G02F1/133G02F1/139
    • G02F1/1392
    • An ON electric field for turning on (allowing light transmission) a liquid crystal optical device and an OFF electric field for turning off (shielding light) the liquid crystal optical device are selectively applied to a liquid crystal material of the liquid crystal optical device. The ON electric field is applied so as to obliquely align liquid crystal molecules with respect to substrates constituting the liquid crystal optical device, thereby obtaining an ON state. The ON electric field has an electric field for driving the liquid crystal molecules and a non-electric field for generating a state wherein no electric field is applied to the liquid crystal molecules. The OFF electric field has an electric field for homeotropically aligning the liquid crystal molecules with respect to the substrates.
    • 液晶光学器件的液晶材料选择性地施加用于使液晶光学器件导通(允许光透射)的ON电场和用于关闭(屏蔽光)的OFF电场。 施加ON电场以使液晶分子相对于构成液晶光学器件的基板倾斜取向,从而获得ON状态。 ON电场具有用于驱动液晶分子的电场和用于产生其中没有电场施加到液晶分子的状态的非电场。 OFF电场具有用于使液晶分子相对于基板垂直取向的电场。