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    Preparation of poly(arylene ether ketones) by sequential oligomerization and polymerization in distinct reaction zones
    1.
    发明授权
    Preparation of poly(arylene ether ketones) by sequential oligomerization and polymerization in distinct reaction zones 失效
    通过在不同反应区中顺序低聚和聚合制备聚（亚芳基醚酮）

    公开(公告)号：US4843131A

    公开(公告)日：1989-06-27

    申请号：US110899

    申请日：1987-10-20

    申请人： Paul Becker ,  Larry M. Edwards ,  Patrick J. Horner ,  A. Brian Macknick ,  Stephen Moore ,  Ronald J. Mosso

    发明人： Paul Becker ,  Larry M. Edwards ,  Patrick J. Horner ,  A. Brian Macknick ,  Stephen Moore ,  Ronald J. Mosso

    IPC分类号： C08G61/12

    CPC分类号： C08G61/127

    摘要： A method of preparing a poly(arylene ether ketone) by a Friedel-Crafts polymerization wherein a gelled reaction mixture is produced, comprising the steps of:(A) forming, in a first reactor, a reaction mixture for polymerization comprising(I) a monomer system comprising(a) (i) phosgene or an aromatic dicarboxylic acid dihalide and (ii) a substantially stoichiometric amount of a polynuclear aromatic comonomer having two active hydrogen atoms or(b) a polynuclear aromatic carboxylic acid halide having an active hydrogen atom; and(II) a Lewis acid in an amount of at least one equivalent per equivalent of carbonyl groups in the monomer system, plus an amount effective to act as a catalyst for the polymerization;(B) permitting the reaction mixture to polymerize in the first reactor until substantial partial polymerization has occurred, but before substantial gelation of the reaction mixture;(C) transferring the partially polymerized reaction mixture into a second reactor having a nozzle at one end thereof and a piston which, in its retracted position, is at the other end of the second reactor and has a stroke substantially equal to the length of the second reactor;(D) permitting polymerization to continue in the second reactor until a gelled, polymerized reaction mixture containing polymer of the desired molecular weight has been obtained;(E) discharging the gelled, polymerized reaction mixture from the second reactor through the nozzle by stroking the piston the length of the second reactor; and(F) recovering and purifying the polymer.

    摘要翻译： 一种通过Friedel-Crafts聚合制备聚（亚芳基醚酮）的方法，其中制备凝胶化反应混合物，其包括以下步骤：（A）在第一反应器中形成聚合反应混合物，其包含（I） 单体体系，其包含（a）（i）光气或芳族二羧酸二卤化物，和（ii）基本上化学计量的具有两个活性氢原子的多核芳族共聚单体或（b）具有活性氢原子的多核芳族羧酸卤化物; 和（II）在单体体系中每当量羰基至少一当量的路易斯酸加上有效用作聚合催化剂的量; （B）允许反应混合物在第一反应器中聚合直至发生基本上部分聚合，但在反应混合物实质凝胶化之前; （C）将部分聚合的反应混合物转移到在其一端具有喷嘴的第二反应器和在其缩回位置处于第二反应器的另一端的活塞，其活塞基本上等于 第二反应堆; （D）允许在第二反应器中继续进行聚合，直至获得含有所需分子量聚合物的凝胶化聚合反应混合物; （E）通过将活塞的第二反应器的长度移动，将来自第二反应器的凝胶化聚合反应混合物通过喷嘴排出; 和（F）回收和纯化聚合物。

    Varistor driven liquid crystal display
    3.
    发明授权
    Varistor driven liquid crystal display 失效
    VARISTOR驱动液晶显示器

    公开(公告)号：US5124822A

    公开(公告)日：1992-06-23

    申请号：US520685

    申请日：1990-05-08

    申请人： Paul Becker ,  Philip J. Jones ,  A. Brian Macknick ,  Lawrence J. White ,  Mark Thompson ,  Justin N. Chiang

    发明人： Paul Becker ,  Philip J. Jones ,  A. Brian Macknick ,  Lawrence J. White ,  Mark Thompson ,  Justin N. Chiang

    IPC分类号： G02F1/136 ,  G02F1/1365 ,  H01C7/112

    CPC分类号： H01C7/112 ,  G02F1/1365

    摘要： A liquid crystal display comprises (a) a first transparent base; (b) a plurality of first picture electrodes on the first transparent base; (c) a plurality of data lines for supplying electrical signals to the first picture electrodes; (d) a second transparent base, parallel to and spaced apart from the first transparent base; (e) a plurality of second picture electrodes on the second transparent base; (f) a plurality of varistor elements made of a varistor material comprising zinc oxide as a primary metal oxide and cobalt and praseodymium oxides as additive metal oxides, in amounts of between 0.1 and 8.0 atom % cobalt and between 0.08 and 8.0 atom % praseodymium, one varistor element being associated with and in electrical contact each second picture electrode; (g) a plurality of scan lines for supplying electrical signals to the second picture electrodes via the respective associated varistor elements; and (h) electrooptically active liquid crystal material between the first and second picture electrodes. In a preferred embodiment, the plurality of varistor elements is in the form of a varistor array comprising an integral body of varistor material having two major opposing faces, one of the opposing faces having an array of indentations thereon, each indentation defining a varistor element.

    摘要翻译： 液晶显示器包括：（a）第一透明基底; （b）第一透明基底上的多个第一图象电极; （c）用于向第一图像电极提供电信号的多条数据线; （d）与第一透明基底平行并间隔开的第二透明基底; （e）第二透明基底上的多个第二图象电极; （f）由包含作为主要金属氧化物的氧化锌和作为添加金属氧化物的钴和镨氧化物的变阻器材料制成的多个可变电阻元件，其量为0.1至8.0原子％的钴和0.08至8.0原子％的镨， 一个压敏电阻元件与每个第二图像电极相关联并且与其接触; （g）多个扫描线，用于经由相应的相关联的变阻器元件向第二图像电极提供电信号; 和（h）第一和第二图像电极之间的电光活性液晶材料。 在优选实施例中，多个压敏电阻元件是变阻器阵列的形式，包括具有两个主要相对面的非线性电阻材料的整体，其中一个相对面具有凹槽阵列，每个压痕限定一个变阻器元件。