Biphenyltetracarboxylic acid dianhydride and process for producing the same, and polyimide formed from the same and process for producing the same
    1.
    发明授权
    Biphenyltetracarboxylic acid dianhydride and process for producing the same, and polyimide formed from the same and process for producing the same 有权
    联苯四羧酸二酐及其制造方法,以及由其制造的聚酰亚胺及其制造方法

    公开(公告)号:US08492565B2

    公开(公告)日:2013-07-23

    申请号:US13617457

    申请日:2012-09-14

    IPC分类号: C07D307/89 C08G73/10

    摘要: To provide a process for producing BPDA whereby high productivity is attained while high purity is maintained.A process for producing biphenyltetracarboxylic acid dianhydride, which comprises heating biphenyltetracarboxylic acid to produce biphenyltetracarboxylic acid dianhydride, characterized in that the heating is carried out at a pressure of from 1×102 Pa to 1.1×105 Pa to a maximum temperature in a range of from 210° C. to 250° C. in such a manner that the temperature rising rate is higher than 50° C./hr for a period of at least ¼ of the time for the temperature rise from 60° C. to 210° C., and the temperature is maintained to be from 150° C. to 250° C. for from 0.5 to 10 hours.

    摘要翻译: 提供一种生产BPDA的方法,从而在保持高纯度的同时获得高生产率。 制备联苯四羧酸二酐的方法,其包括加热联苯四羧酸以制备联苯四羧酸二酐,其特征在于,在1×102Pa至1.1×10 5 Pa的压力下进行加热至最高温度范围为 210℃至250℃,温度升高速率高于50℃/小时,至少为温度从60℃升至210℃的时间的1/4 并且将温度保持在150℃至250℃下0.5至10小时。

    BIPHENYLTETRACARBOXYLIC ACID DIANHYDRIDE AND PROCESS FOR PRODUCING THE SAME, AND POLYIMIDE FORMED FROM THE SAME AND PROCESS FOR PRODUCING THE SAME
    2.
    发明申请
    BIPHENYLTETRACARBOXYLIC ACID DIANHYDRIDE AND PROCESS FOR PRODUCING THE SAME, AND POLYIMIDE FORMED FROM THE SAME AND PROCESS FOR PRODUCING THE SAME 有权
    联苯二羧酸二异氰酸酯及其制造方法及其制备的聚酰亚胺及其制造方法

    公开(公告)号:US20100305299A1

    公开(公告)日:2010-12-02

    申请号:US12855597

    申请日:2010-08-12

    IPC分类号: C08G69/26 C07D407/02

    摘要: To provide a process for producing BPDA whereby high productivity is attained while high purity is maintained.A process for producing biphenyltetracarboxylic acid dianhydride, which comprises heating biphenyltetracarboxylic acid to produce biphenyltetracarboxylic acid dianhydride, characterized in that the heating is carried out at a pressure of from 1×102 Pa to 1.1×105 Pa to a maximum temperature in a range of from 210° C. to 250° C. in such a manner that the temperature rising rate is higher than 50° C./hr for a period of at least ¼ of the time for the temperature rise from 60° C. to 210° C., and the temperature is maintained to be from 150° C. to 250° C. for from 0.5 to 10 hours.

    摘要翻译: 提供一种生产BPDA的方法,从而在保持高纯度的同时获得高生产率。 制备联苯四羧酸二酐的方法,其包括加热联苯四羧酸以制备联苯四羧酸二酐,其特征在于,在1×102Pa至1.1×10 5 Pa的压力下进行加热至最高温度范围为 210℃至250℃,温度升高速率高于50℃/小时,至少为温度从60℃升至210℃的时间的1/4 并且将温度保持在150℃至250℃下0.5至10小时。

    Biphenyltetracarboxylic acid dianhydride and process for producing the same, and polyimide formed from the same and process for producing the same
    3.
    发明授权
    Biphenyltetracarboxylic acid dianhydride and process for producing the same, and polyimide formed from the same and process for producing the same 有权
    联苯四羧酸二酐及其制造方法,以及由其制造的聚酰亚胺及其制造方法

    公开(公告)号:US08299273B2

    公开(公告)日:2012-10-30

    申请号:US12855597

    申请日:2010-08-12

    IPC分类号: C07D307/89

    摘要: To provide a process for producing BPDA whereby high productivity is attained while high purity is maintained.A process for producing biphenyltetracarboxylic acid dianhydride, which comprises heating biphenyltetracarboxylic acid to produce biphenyltetracarboxylic acid dianhydride, characterized in that the heating is carried out at a pressure of from 1×102 Pa to 1.1×105 Pa to a maximum temperature in a range of from 210° C. to 250° C. in such a manner that the temperature rising rate is higher than 50° C./hr for a period of at least ¼ of the time for the temperature rise from 60° C. to 210° C., and the temperature is maintained to be from 150° C. to 250° C. for from 0.5 to 10 hours.

    摘要翻译: 提供一种生产BPDA的方法,从而在保持高纯度的同时获得高生产率。 制备联苯四羧酸二酐的方法,其包括加热联苯四羧酸以制备联苯四羧酸二酐,其特征在于,在1×102Pa至1.1×10 5 Pa的压力下进行加热至最高温度范围为 210℃至250℃,温度升高速率高于50℃/小时,至少为温度从60℃升至210℃的时间的1/4 并且将温度保持在150℃至250℃下0.5至10小时。

    Biphenyltetracarboxylic acid dianhydride and process for producing the same, and polyimide formed from the same and process for producing the same
    4.
    发明授权
    Biphenyltetracarboxylic acid dianhydride and process for producing the same, and polyimide formed from the same and process for producing the same 有权
    联苯四羧酸二酐及其制造方法,以及由其制造的聚酰亚胺及其制造方法

    公开(公告)号:US07842824B2

    公开(公告)日:2010-11-30

    申请号:US11570812

    申请日:2005-06-28

    IPC分类号: C07D307/89 C08G69/32

    摘要: To provide a process for producing BPDA whereby high productivity is attained while high purity is maintained.A process for producing biphenyltetracarboxylic acid dianhydride, which comprises heating biphenyltetracarboxylic acid to produce biphenyltetracarboxylic acid dianhydride, characterized in that the heating is carried out at a pressure of from 1×102 Pa to 1.1×105 Pa to a maximum temperature in a range of from 210° C. to 250° C. in such a manner that the temperature rising rate is higher than 50° C./hr for a period of at least ¼ of the time for the temperature rise from 60° C. to 210° C., and the temperature is maintained to be from 150° C. to 250° C. for from 0.5 to 10 hours.

    摘要翻译: 提供一种生产BPDA的方法,从而在保持高纯度的同时获得高生产率。 制备联苯四羧酸二酐的方法,其包括加热联苯四羧酸以制备联苯四羧酸二酐,其特征在于,在1×102Pa至1.1×10 5 Pa的压力下进行加热至最高温度范围为 210℃至250℃,温度升高速率高于50℃/小时,至少为温度从60℃升至210℃的时间的1/4 并且将温度保持在150℃至250℃下0.5至10小时。

    BIPHENYLTETRACARBOXYLIC ACID DIANHYDRIDE AND PROCESS FOR PRODUCING THE SAME, AND POLYIMIDE FORMED FROM THE SAME AND PROCESS FOR PRODUCING THE SAME
    5.
    发明申请
    BIPHENYLTETRACARBOXYLIC ACID DIANHYDRIDE AND PROCESS FOR PRODUCING THE SAME, AND POLYIMIDE FORMED FROM THE SAME AND PROCESS FOR PRODUCING THE SAME 有权
    联苯二羧酸二异氰酸酯及其制造方法及其制备的聚酰亚胺及其制造方法

    公开(公告)号:US20130012682A1

    公开(公告)日:2013-01-10

    申请号:US13617457

    申请日:2012-09-14

    IPC分类号: C07D407/10 C08G69/26

    摘要: To provide a process for producing BPDA whereby high productivity is attained while high purity is maintained.A process for producing biphenyltetracarboxylic acid dianhydride, which comprises heating biphenyltetracarboxylic acid to produce biphenyltetracarboxylic acid dianhydride, characterized in that the heating is carried out at a pressure of from 1×102 Pa to 1.1×105 Pa to a maximum temperature in a range of from 210° C. to 250° C. in such a manner that the temperature rising rate is higher than 50° C./hr for a period of at least ¼ of the time for the temperature rise from 60° C. to 210° C., and the temperature is maintained to be from 150° C. to 250° C. for from 0.5 to 10 hours.

    摘要翻译: 提供一种生产BPDA的方法,从而在保持高纯度的同时获得高生产率。 制备联苯四羧酸二酐的方法,其包括加热联苯四羧酸以制备联苯四羧酸二酐,其特征在于,在1×102Pa至1.1×10 5 Pa的压力下进行加热至最高温度范围为 210℃至250℃,温度升高速率高于50℃/小时,至少为温度从60℃升至210℃的时间的1/4 并且将温度保持在150℃至250℃下0.5至10小时。

    Biphenyltetracarboxylic Acid Dianhydride and Process for Producing the Same, and Polymide Formed from the Same and Process for Producing Same
    6.
    发明申请
    Biphenyltetracarboxylic Acid Dianhydride and Process for Producing the Same, and Polymide Formed from the Same and Process for Producing Same 有权
    联苯四羧酸二酐及其制备方法和由其制成的聚酰胺及其制备方法

    公开(公告)号:US20080063849A1

    公开(公告)日:2008-03-13

    申请号:US11570812

    申请日:2005-06-28

    摘要: To provide a process for producing BPDA whereby high productivity is attained while high purity is maintained.A process for producing biphenyltetracarboxylic acid dianhydride, which comprises heating biphenyltetracarboxylic acid to produce biphenyltetracarboxylic acid dianhydride, characterized in that the heating is carried out at a pressure of from 1×102 Pa to 1.1×105 Pa to a maximum temperature in a range of from 210° C. to 250° C. in such a manner that the temperature rising rate is higher than 50° C./hr for a period of at least ¼0 of the time for the temperature rise from 60° C. to 210° C., and the temperature is maintained to be from 150° C. to 250° C. for from 0.5 to 10 hours.

    摘要翻译: 提供一种生产BPDA的方法,从而在保持高纯度的同时获得高生产率。 一种制备联苯四羧酸二酐的方法,其包括加热联苯四羧酸以制备联苯四羧酸二酐,其特征在于加热在1×10 -2 Pa至1.1×10 5 Pa的压力下进行, / SUP> Pa至210℃至250℃范围内的最高温度,使得升温速率高于50℃/小时至少为时间的1/4 温度从60℃升至210℃,并将温度保持在150℃至250℃,持续0.5至10小时。

    PLASMA DISPLAY DEVICE, AND METHOD FOR DRIVING PLASMA DISPLAY PANEL
    7.
    发明申请
    PLASMA DISPLAY DEVICE, AND METHOD FOR DRIVING PLASMA DISPLAY PANEL 失效
    等离子体显示装置和驱动等离子体显示面板的方法

    公开(公告)号:US20110128308A1

    公开(公告)日:2011-06-02

    申请号:US13055534

    申请日:2009-08-04

    IPC分类号: G09G5/10

    摘要: In a plasma display panel, abnormal discharge in address periods is suppressed to enhance image display quality. The scan electrode driving circuit generates a first falling down-ramp voltage i.e. down-ramp voltage L2 or down-ramp voltage L4, in initializing periods, generates sustain pulses in sustain periods, generates a rising up-ramp voltage, i.e. erasing up-ramp voltage L3, at the ends of the sustain periods, and applies the voltages to the scan electrodes. After generating the sustain pulses in the sustain periods, the scan electrode driving circuit generates a second down-ramp voltage, i.e. erasing down-ramp voltage L5, which has a portion falling with a gradient gentler than that of down-ramp voltage L2 and down-ramp voltage L4. After generating erasing down-ramp voltage L5, the scan electrode driving circuit generates erasing up-ramp voltage L3 and applies the voltage to the scan electrodes.

    摘要翻译: 在等离子体显示面板中,抑制寻址期间的异常放电,提高图像显示质量。 扫描电极驱动电路在初始化期间产生第一下降斜坡电压即下降斜坡电压L2或下降斜坡电压L4,在维持期间产生维持脉冲,产生上升斜坡电压,即消除上升斜坡 电压L3,在维持周期的末端,并将电压施加到扫描电极。 在维持周期中产生维持脉冲之后,扫描电极驱动电路产生第二下降斜坡电压,即,消除下降斜坡电压L5,其具有比下降斜坡电压L2降低的梯度的下降部分 - 电压L4。 在产生擦除下降斜坡电压L5之后,扫描电极驱动电路产生消除上升斜坡电压L3并将电压施加到扫描电极。

    Apparatus for analyzing particulates
    8.
    发明授权
    Apparatus for analyzing particulates 失效
    微粒分析装置

    公开(公告)号:US4747297A

    公开(公告)日:1988-05-31

    申请号:US12650

    申请日:1987-02-09

    摘要: An apparatus for measuring and analyzing the concentration or weight of particulates in the exhaust gas from a diesel engine. The apparatus includes a carbon particle detector which continuously measures dry soot concentration and high and low temperature HC detectors which respectively continuously measure the concentrations of gaseous hydrocarbon compounds (1) in a high-temperature undiluted state immediately upon leaving the diesel engine and (2) in a low-temperature diluted and cooled state after dilution with room air. Standard gas detectors are provided for both the high-temperature undiluted exhaust gas and the diluted and cooled exhaust gas in order to continuously determine the amount of dilution of the diluted exhaust gas. Outputs from the detectors are input to a computer to provide continuous determination of the total concentration or weight of particulates which are composed of soot particles and soluble organic fractions, as well as separate determinations of these components.

    摘要翻译: 一种用于测量和分析来自柴油发动机的废气中的颗粒物的浓度或重量的装置。 该装置包括连续测量干烟灰浓度的碳粒子检测器,以及在离开柴油发动机时立即分别连续地测量处于高温未稀释状态的气态烃化合物(1)的浓度的高温和低温HC检测器,以及(2) 在用室内空气稀释后在低温稀释和冷却状态。 为高温未稀释废气和稀释和冷却废气提供标准气体检测器,以连续确定稀释废气的稀释量。 来自检测器的输出被输入到计算机以提供由烟灰颗粒和可溶性有机部分组成的颗粒的总浓度或重量的连续测定,以及这些组分的单独测定。

    Fluorescent gas analyzer
    9.
    发明授权
    Fluorescent gas analyzer 失效
    荧光气体分析仪

    公开(公告)号:US4469946A

    公开(公告)日:1984-09-04

    申请号:US366417

    申请日:1982-04-07

    IPC分类号: G01N21/64 G01J1/42

    摘要: A fluorescent gas analyzer for analyzing gases by the fluorescence method. A flashtube which is operated in its pulse mode is used as a light source. First and second optical detectors respectively detect light of a first and second wavelength range, the light of the first wavelength range being emitted by the light source and the light of the second wavelength range being emitted from a gas sample irradiated by the light source. A pair of integrators respectively integrate the outputs of the first and second detectors. Processing means, including sample and hold circuits and a synchronous detector, are used to further process the signals so that the system output is independent of deterioration of the light source and fluctuations in the strength of the light source output and independent of stray capacitance effects.

    摘要翻译: 荧光气体分析仪,用于通过荧光法分析气体。 以脉冲模式操作的闪光管用作光源。 第一和第二光学检测器分别检测第一和第二波长范围的光,由光源发射的第一波长范围的光和第二波长范围的光从由光源照射的气体样品发射。 一对积分器分别集成第一和第二检测器的输出。 使用包括采样保持电路和同步检测器的处理装置进一步处理信号,使得系统输出与光源的劣化和光源输出强度的波动无关,而与杂散电容效应无关。

    DRIVING DEVICE AND DRIVING METHOD OF PLASMA DISPLAY PANEL AND PLASMA DISPLAY APPARATUS
    10.
    发明申请
    DRIVING DEVICE AND DRIVING METHOD OF PLASMA DISPLAY PANEL AND PLASMA DISPLAY APPARATUS 审中-公开
    等离子体显示面板和等离子体显示装置的驱动装置和驱动方法

    公开(公告)号:US20100265219A1

    公开(公告)日:2010-10-21

    申请号:US12747010

    申请日:2008-09-04

    IPC分类号: G09G5/00

    摘要: A two-phase driving operation is performed by a first circuit and a second circuit in at least one sub-field. The first circuit applies a first ramp waveform that drops from a first potential to a second potential to a plurality of first scan electrodes in a setup period, and sequentially applies a scan pulse to the plurality of first scan electrodes in a write period. The second circuit applies a second ramp waveform that drops from the first potential to a third potential that is higher than the second potential to a plurality of second scan electrodes in the setup period, and holds the second scan electrodes at a fourth potential that is higher than the third potential in a period where the scan pulse is applied to the first scan electrodes, and then sequentially applies a scan pulse to the plurality of second electrodes in the write period. Discharge failures during write discharges can be prevented from occurring by applying the two-phase driving operation.

    摘要翻译: 在至少一个子场中由第一电路和第二电路执行两相驱动操作。 第一电路在初始化周期中施加从第一电位降低到第二电位的第一斜坡波形,并且在写入周期中顺序地对多个第一扫描电极施加扫描脉冲。 第二电路在建立周期中施加从第一电位下降到高于第二电位的第三电位到第二扫描电极的第二斜坡波形,并且将第二扫描电极保持在较高的第四电位 比扫描脉冲施加到第一扫描电极的时间段内的第三电位高,然后在写入周期中顺序地向多个第二电极施加扫描脉冲。 可以通过施加两相驱动操作来防止写入放电期间的放电故障。