Aromatic polycarbonate
    1.
    发明授权
    Aromatic polycarbonate 有权
    芳香聚碳酸酯

    公开(公告)号:US06255436B1

    公开(公告)日:2001-07-03

    申请号:US09444933

    申请日:1999-11-22

    IPC分类号: C08G6400

    CPC分类号: C08G64/307

    摘要: An aromatic polycarbonate of the present invention is produced by reacting an aromatic dihydroxy compound with a compound capable of introducing a carbonate bond, and has a viscosity-average molecular weight of 12,000 to 40,000 and a content of a cyclic oligomer represented by the formula (1) of not more than 1,000 ppm, in which the percentage of the content of said cyclic oligomer represented by the formula (1) based on the total contents of the cyclic oligomer represented by the formula (1), an oligomer represented by the formula (2) and an oligomer represented by the formula (3) satisfies the following relational formula [I]: 0

    摘要翻译: 本发明的芳香族聚碳酸酯是通过使芳香族二羟基化合物与能够引入碳酸酯键的化合物反应而制造的,粘均分子量为12,000〜40,000,由式(1)表示的环状低聚物的含量 )不超过1000ppm,其中由式(1)表示的所述环状低聚物的含量的百分比基于由式(1)表示的环状低聚物的总含量,由式(1)表示的低聚物 2)和式(3)表示的低聚物满足以下关系式[I]:其中(1),(2)和(3)是由上式(1),(2)表示的低聚物的含量, 和(3)分别; Mv是所述芳族聚碳酸酯的粘均分子量。

    Aromatic polycarbonate composition
    2.
    发明授权
    Aromatic polycarbonate composition 有权
    芳香族聚碳酸酯组合物

    公开(公告)号:US06187896B1

    公开(公告)日:2001-02-13

    申请号:US09468368

    申请日:1999-12-21

    IPC分类号: C08G6400

    CPC分类号: C08K5/5313 C08L69/00

    摘要: An aromatic polycarbonate composition which has excellent thermal stability and maintains high transparency and a satisfactory hue even at high temperatures. The aromatic polycarbonate composition comprises: a polycarbonate obtained by reacting at least one aromatic dihydroxy compound with a compound capable of incorporating a carbonate bond; and a phosphorus compound represented by the following formula (1): wherein the eight R′s may be the same or different and each represents a hydrogen atom or an optionally substituted, aliphatic or aromatic, univalent group having 1 to 18 carbon atoms.

    摘要翻译: 芳族聚碳酸酯组合物,即使在高温下也具有优异的热稳定性和保持高透明度和令人满意的色调。 芳族聚碳酸酯组合物包含:通过使至少一种芳族二羟基化合物与能够引入碳酸酯键的化合物反应获得的聚碳酸酯; 和由下式(1)表示的磷化合物:其中8个R可以相同或不同,并且各自表示氢原子或任选取代的具有1至18个碳原子的脂族或芳族一价基团。

    Semiconductor memory device and its testing method
    5.
    发明授权
    Semiconductor memory device and its testing method 失效
    半导体存储器件及其测试方法

    公开(公告)号:US06888774B2

    公开(公告)日:2005-05-03

    申请号:US10224499

    申请日:2002-08-21

    CPC分类号: G11C29/28 G11C2029/2602

    摘要: A semiconductor memory device is of a bank switching type having a plurality of memory array banks provided in a memory chip which can be switched from one to another for storage operation. The semiconductor memory device includes: a plurality of memory arrays in the memory array banks; an input/output circuit for transmitting information data between the memory arrays and the outside; a data bus for connecting between the memory arrays and the input/output circuit; and N-channel transistors provided across the data bus. The data bus consists of a plurality of adjacent lines. Each of N-channel transistors is connected at their drain to the corresponding lines of the data bus while at their source to the ground. When a multi-bit test is commenced for writing and reading data on the memory arrays, the N-channel transistors are turned on to connect the lines of the data bus to the ground.

    摘要翻译: 半导体存储器件是具有存储器芯片中的多个存储器阵列组的存储体交换型,其可以从一个切换到另一个用于存储操作。 半导体存储器件包括:存储器阵列中的多个存储器阵列; 用于在存储器阵列和外部之间传送信息数据的输入/输出电路; 用于连接存储器阵列和输入/输出电路的数据总线; 和跨越数据总线的N沟道晶体管。 数据总线由多条相邻线组成。 每个N沟道晶体管在其漏极处连接到数据总线的相应线,同时它们的源极处于接地。 当开始对存储器阵列上的数据写入和读取进行多位测试时,N沟道晶体管导通,将数据总线的线路连接到地。

    Polymer film
    6.
    发明授权
    Polymer film 有权
    聚合物膜

    公开(公告)号:US08790766B2

    公开(公告)日:2014-07-29

    申请号:US12520558

    申请日:2007-12-21

    摘要: The present invention can provide a polymer film having an Ra (arithmetic average roughness) of 0.5 μm to 2.5 μm, an Ry (maximum height) of 3 μm to 11 μm, an Rz (ten-point average height) of 3 μm to 8 μm, and a light transmittance of 85% or higher. A preferable embodiment of the present invention can provide, at the same time, an optical diffusion function, an improved luminance, a transmittance and the like which are of a sufficient level not realized conventionally. In a still preferable embodiment, Sm (average concave-concave/convex-convex interval) of 90 μm to 160 μm and the average inter-local peak interval (S) is 5 μm to 15 μm.

    摘要翻译: 本发明可以提供Ra(算术平均粗糙度)为0.5μm〜2.5μm,Ry(最大高度)为3μm〜11μm,Rz(10点平均高度)为3μm〜8μm的聚合物膜 μm,透光率为85%以上。 本发明的优选实施方式可以同时提供通常没有实现的足够水平的光学扩散功能,改善的亮度,透射率等。 在一个更优选的实施方式中,90μm〜160μm的Sm(平均凹入/凸凸间隔)和平均局部间间隔间隔(S)为5μm〜15μm。

    Process for producing carboxylated compound
    7.
    发明授权
    Process for producing carboxylated compound 失效
    羧化化合物的制备方法

    公开(公告)号:US5310944A

    公开(公告)日:1994-05-10

    申请号:US975444

    申请日:1992-01-17

    摘要: A process for producing a carboxylated compound, which comprises reacting a carbonyl compound with hydrogen peroxide in the presence of an organo-arsenic acid of the formula (1), ##STR1## wherein: R.sup.1 is a C.sub.1 -C.sub.12 alkyl group which may be substituted or an aryl group which may be substituted,R.sup.2 is a hydroxyl group or the same group as that which defines R.sup.1,or alternatively, R.sup.1 and R.sup.2 may bond to each other to form a five-membered or six-membered ring together with As atoms to which these groups are bonded, andthe substituent(s) substituted on the above groups is/are selected from hydroxyl, carboxyl, carbonyl, sulfonyl, sulfonium, an amino group, an ammonium group, an alkyl group, an alkoxyl group and a halogen atom,while a water concentration in a reaction system is maintained at not more than 2% by weight, thereby to form a corresponding carboxylated compound.

    摘要翻译: 一种羧化化合物的制备方法,其包括在式(1)的有机砷酸存在下使羰基化合物与过氧化氢反应,其中:R1是C1-C12烷基, 可以被取代,或者可以被取代的芳基,R 2是与定义R 1的羟基或者相同的基团,或者,R 1和R 2可以彼此键合以形成五元或六元环在一起 与这些基团键合的As原子,并且上述取代基的取代基选自羟基,羧基,羰基,磺酰基,锍,氨基,铵基,烷基,烷氧基 基团和卤素原子,而反应体系中的水浓度保持在不超过2重量%,从而形成相应的羧化化合物。

    Production method of polycarbonate
    9.
    发明授权
    Production method of polycarbonate 失效
    聚碳酸酯的生产方法

    公开(公告)号:US5777064A

    公开(公告)日:1998-07-07

    申请号:US615466

    申请日:1996-03-14

    摘要: A method of producing a polycarbonate excellent in the hue, the thermal stability, and the electrolysis stability by supplying a polycarbonate obtained by a transesterification method to an extruder having vent(s), melting the polycarbonate, and adding an acidic compound to the molten polycarbonate followed by kneading to continuously devolatilize low molecular weight compounds remaining in the polycarbonate. Better result is obtained by adding water to the kneaded mixture of the polycarbonate and the acidic compound before devolatilizing the low molecular weight compounds.

    摘要翻译: 通过将通过酯交换方法获得的聚碳酸酯供给到具有排气口的挤出机,熔融聚碳酸酯并将酸性化合物加入到熔融聚碳酸酯中的方法,制备具有优异色调,热稳定性和电解稳定性的聚碳酸酯的方法, 然后捏合以使剩余在聚碳酸酯中的低分子量化合物脱挥发分。 在将低分子量化合物脱挥发分之前,通过向聚碳酸酯和酸性化合物的捏合混合物中加水来获得更好的结果。

    Photosensitive polyimide precursor
    10.
    发明授权
    Photosensitive polyimide precursor 失效
    感光聚酰亚胺前体

    公开(公告)号:US4861854A

    公开(公告)日:1989-08-29

    申请号:US200864

    申请日:1988-06-01

    IPC分类号: C08G73/10 G03F7/037 G03F7/038

    摘要: A photosensitive polyimide precursor composed of the structural units (A) represented by the following general formula (I) and the structural units (B) represented by the following general formula (II), in which the ratio of the molar quantity of the structural units (A) to the sum of the molar quantity of the structural units (A) and that of the structural units (B) is 0.01 or greater, and having a viscosity of 100 cP or above as measured at 25.degree. C. in the state of a 10% by weight solution in N-methylpyrrolidone: ##STR1## wherein R.sub.1 represents a tetravalent aromatic hydrocarbon residue; R.sub.2 represents a divalent aromatic hydrocarbon residue; X, identical or different represents a halogen or an alkyl group; and m represents 0 or an integer from 1 to 4. The photosensitivity of the present photosensitive polyimide precursor is about 20 to 100 times that of conventional products. After heat dehydration cyclization, it shows a heat resistance of 400.degree. C. or above.

    摘要翻译: 由以下通式(I)表示的结构单元(A)和由以下通式(II)表示的结构单元(B))组成的光敏聚酰亚胺前体,其中结构单元 (A)和结构单元(B)的摩尔量的总和为0.01以上,粘度为100cP以上,在该状态下在25℃下测定 的10重量%的N-甲基吡咯烷酮溶液:其中R1表示四价芳烃残基;(I)其中R 1表示四价芳烃残基; R2表示二价芳烃残基; X相同或不同,表示卤素或烷基; m表示0或1〜4的整数。本发明的感光性聚酰亚胺前体的光敏度为常规产品的约20〜100倍。 热脱水环化后,其耐热性为400℃以上。