COPOLYMERS WITH AMORPHOUS POLYAMIDE SEGMENTS
    23.
    发明申请
    COPOLYMERS WITH AMORPHOUS POLYAMIDE SEGMENTS 有权
    具有非晶聚酰胺部分的共聚物

    公开(公告)号:US20110034663A1

    公开(公告)日:2011-02-10

    申请号:US12937807

    申请日:2009-04-29

    IPC分类号: C08G69/44

    CPC分类号: C08G69/26 C08G69/28

    摘要: The invention, in one aspect, is a copolymer comprising amorphous polyamide hard segments, which contain 1-methyl-2,4-phenylene, 1-methyl-2,6-phenylene, or mixtures thereof structure units. The structure characteristics of 1-methyl-2,4-phenylene, 1-methyl-2,6-phenylene, or mixtures thereof render the hard segments having glass transition temperatures below 200° C. while maintaining physical properties required for making molded articles.

    摘要翻译: 本发明在一个方面是包含含有1-甲基-2,4-亚苯基,1-甲基-2,6-亚苯基或其混合物结构单元的无定形聚酰胺硬链段的共聚物。 1-甲基-2,4-亚苯基,1-甲基-2,6-亚苯基或其混合物的结构特征使得具有玻璃化转变温度低于200℃的硬链段,同时保持制备模塑制品所需的物理性能。

    Device for remote inspection of steam generator tubes
    24.
    发明授权
    Device for remote inspection of steam generator tubes 有权
    用于远程检查蒸汽发生器管的装置

    公开(公告)号:US06877389B2

    公开(公告)日:2005-04-12

    申请号:US10341601

    申请日:2003-01-14

    摘要: A remote inspection device for the inspection of the tubesheet in-bundle region of a steam generator. The device includes a rail system that is easily and quickly mounted to the end of tube at an in-bundle region of a steam generator, a carriage movable on the rail system for feeding at flexible, tape-like wand into the tube, and a probe mounted on an end of the flexible, tape-like wand for performing the inspection operation. The flexible, tape-like wand, which is composed of a flexible metal alloy, has a non-circular center section forming a channel for receiving cabling for the probe and opposed flat, wings on either side of the non-circular center section. Each wing has a row of feed holes positioned remote from the center section that provide engagement with a feed wheel of the carriage.

    摘要翻译: 一种用于检查蒸汽发生器的管束内区域的远程检查装置。 该装置包括轨道系统,该系统容易且快速地安装在蒸汽发生器的束内区域的管的端部,可在轨道系统上移动的托架,用于以柔性的带状棒进给到管中,以及 探针安装在柔性带状棒的一端,用于执行检查操作。 由柔性金属合金组成的柔性带状棒具有形成用于接收用于探针的布线的通道的非圆形中心部分,并且在非圆形中心部分的任一侧上具有相对的平坦的翅膀。 每个机翼具有一排进给孔,其位于远离中心部分的位置,其提供与滑架的进给轮的接合。

    Polyamic acid precursors and methods for preparing higher molecular
weight polyamic acids and polyimidebenzoxazole
    25.
    发明授权
    Polyamic acid precursors and methods for preparing higher molecular weight polyamic acids and polyimidebenzoxazole 失效
    聚酰胺酸前体和制备高分子量聚酰胺酸和聚酰亚胺苯并恶唑的方法

    公开(公告)号:US5985969A

    公开(公告)日:1999-11-16

    申请号:US27701

    申请日:1998-02-23

    摘要: Polyimide precursor solutions comprise an organic liquid and the reaction product of an aromatic dianhydride and an aromatic diaminobenzoxazole capped, on at least one terminal end, with a bifunctional chain extender. The bifunctional chain extender has one functional group reactive with the amine of the aromatic diaminobenzoxazole or the anhydride of the aromatic dianhydride and another functional group which does not form amic acid linkages, but which is capable of further reaction to increase the molecular weight of the polyimide precursor under conditions other than those used to react the aromatic diamine and aromatic dianhydride to form the polyimide precursor. These polyimide precursors can be converted into polyimidebenzoxazole polymers.

    摘要翻译: 聚酰亚胺前体溶液包含有机液体,芳族二酐和芳族二氨基苯并恶唑在至少一个末端封端的双官能增链剂的反应产物。 双功能扩链剂具有与芳族二氨基苯并恶唑或芳族二酐的酐反应的一个官能团和不形成酰胺键的另一官能团,但能进一步反应以增加聚酰亚胺的分子量 前体在除了用于使芳族二胺和芳族二酐反应以形成聚酰亚胺前体的条件之外的条件下进行。 这些聚酰亚胺前体可以转化成聚酰亚胺苯并恶唑聚合物。

    Preparation of aryl compounds containing carboxyl and sulfonyl groups
    27.
    发明授权
    Preparation of aryl compounds containing carboxyl and sulfonyl groups 失效
    含羧基和磺酰基的芳基化合物的制备

    公开(公告)号:US5210257A

    公开(公告)日:1993-05-11

    申请号:US685257

    申请日:1991-04-12

    申请人: William J. Harris

    发明人: William J. Harris

    摘要: Novel aryl ethers, containing both a carboxylic acid and a sulfonic acid functionality; and a process for making them are described. These difunctional aryl compounds comprise:i) a carboxylic acid group or its derivative,ii) a first aromatic group bonded to the carboxylic acid or its derivative,iii) a second aromatic group linked to the first aromatic group by a non-electron-withdrawing moiety,iv) a third aromatic group linked to the second aromatic group by a non-electron-withdrawing moiety, andv) a sulfonyl group or its derivative bonded to the third aromatic group.

    摘要翻译: 含有羧酸和磺酸官能团的新型芳基醚; 并对其进行描述。 这些双官能芳基化合物包括:i)羧酸基团或其衍生物,ii)与羧酸或其衍生物键合的第一芳族基团,iii)通过非吸电子性连接到第一芳族基团的第二芳族基团 部分,iv)通过非吸电子部分与第二芳族基团连接的第三芳族基团,和v)与第三芳族基团键合的磺酰基或其衍生物。

    Air conditioning control system with master and tracking controllers
    30.
    发明授权
    Air conditioning control system with master and tracking controllers 失效
    空调控制系统,主控跟踪控制器

    公开(公告)号:US4473089A

    公开(公告)日:1984-09-25

    申请号:US558992

    申请日:1983-12-07

    摘要: An air conditioning control system for at least two duct sections each with an associated damper comprises at least one master controller for a first pneumatic actuator for one damper and at least one tracking controller for a second pneumatic actuator for the other damper. The master controller comprises a first flow sensor producing a first flow variable signal in response to a sensed flow in the duct section associated with the said one damper. An adjustable reference or bias signal means is provided and a temperature signal is combined therewith to provide a composite signal for comparison with the flow variable signal. A resultant signal after comparison operates the first pneuamtic actuator for the said one damper. A tracking controller comprises a second flow sensor producing a second flow variable signal in response to sensed flow in the duct section associated with the other damper. A second signal comparison and transmitting means receives the first and second flow variable signals, compares the two and transmits a second resultant signal to the second pneumatic actuator for control of the said other damper. The second comparison means includes a pivotally mounted lever acted upon by diaphragm actuated first and second push rods representing the first and second flow variable signals. One of the diaphragm assemblies is mounted for slidable adjustment along the lever to vary the relative mechanical advantage and to vary the flow ratio between the two dampers and duct sections.

    摘要翻译: 用于至少两个管道段的空调控制系统,每个管道段具有相关联的阻尼器,其包括至少一个用于一个阻尼器的第一气动执行器的主控制器和用于另一阻尼器的第二气动致动器的至少一个跟踪控制器。 主控制器包括第一流量传感器,其响应于与所述一个阻尼器相关联的管道部分中的感测流动产生第一流量可变信号。 提供可调节的参考或偏置信号装置,并且将温度信号与其组合以提供用于与流量可变信号进行比较的复合信号。 比较后的结果信号操作所述一个阻尼器的第一气泡致动器。 跟踪控制器包括响应于与另一阻尼器相关联的管道部分中的感测流而产生第二流量可变信号的第二流量传感器。 第二信号比较和发送装置接收第一和第二流量可变信号,比较两者,并将第二结果信号发送到第二气动致动器,以控制所述另一阻尼器。 第二比较装置包括枢轴安装的杆,其作用在隔膜致动的第一和第二推杆上,表示第一和第二流量可变信号。 隔膜组件中的一个安装成可沿着杠杆滑动调节以改变相对的机械优点并改变两个阻尼器和管道部分之间的流量比。