Toner compositions containing colored silica particles
    83.
    发明授权
    Toner compositions containing colored silica particles 失效
    含有着色二氧化硅颗粒的调色剂组合物

    公开(公告)号:US5102763A

    公开(公告)日:1992-04-07

    申请号:US495669

    申请日:1990-03-19

    摘要: Disclosed is a dry toner composition which comprises a resin, hydrophilic silica particles having dyes covalently bonded to the particle surfaces through silane coupling agents, and a polymer having at least one segment capable of enhancing the dispersability of the silica particles in the resin and at least one segment capable of adsorbing onto the surface of the silica particles. In one embodiment, the polymer segment capable of adsorbing onto the surface of the silica particles is ionophoric and capable of complexing with a salt, thereby incorporating a toner charge control additive into the polymer.

    摘要翻译: 公开了一种干燥调色剂组合物,其包含树脂,具有通过硅烷偶联剂共价结合到颗粒表面的染料的亲水性二氧化硅颗粒和具有至少一个能够增强二氧化硅颗粒在树脂中的分散性的区段的聚合物,并且至少 能够吸附到二氧化硅粒子的表面上的一个部分。 在一个实施方案中,能够吸附到二氧化硅颗粒的表面上的聚合物链段是离子交换的并且能够与盐络合,从而将调色剂电荷控制添加剂掺入到聚合物中。

    Catalysts for polymerizing propylene in a high temperature solution
process
    86.
    发明授权
    Catalysts for polymerizing propylene in a high temperature solution process 失效
    用于在高温溶液工艺中聚合丙烯的催化剂

    公开(公告)号:US4297465A

    公开(公告)日:1981-10-27

    申请号:US201955

    申请日:1980-10-29

    申请人: Thomas W. Smith

    发明人: Thomas W. Smith

    IPC分类号: C08F2/06 C08F10/00 C08F10/06

    CPC分类号: C08F10/00

    摘要: This invention relates to improved catalysts for the polymerization of propylene and higher .alpha.-olefin in a high temperature solution process comprising (1) a beta amino carboxylic ester, (2) an aluminum trialkyl and (3) a transition metal halide. More particularly, this invention relates to catalysts for the catalytic high temperature solution polymerization of .alpha.-mono-olefins containing at least 3 carbon atoms to form solid, highly crystalline polymers. More specifically, the catalysts of the present invention produce polypropylene in a high temperature solution process at very high polymer to catalysts yields.

    摘要翻译: 本发明涉及用于在高温溶液方法中聚合丙烯和高级α-烯烃的改进的催化剂,其包括(1)β氨基羧酸酯,(2)三烷基铝和(3)过渡金属卤化物。 更具体地说,本发明涉及用于催化高温溶液聚合含有至少3个碳原子的α-单烯烃以形成固体高结晶聚合物的催化剂。 更具体地说,本发明的催化剂在非常高的聚合物与催化剂产率的高温溶液法中生产聚丙烯。

    Preparation of colloidal cobalt dispersions by the polymer-catalyzed
decomposition of cobalt carbonyl and cobalt organocarbonyl compounds
    87.
    发明授权
    Preparation of colloidal cobalt dispersions by the polymer-catalyzed decomposition of cobalt carbonyl and cobalt organocarbonyl compounds 失效
    通过聚合物催化分解羰基钴和钴有机羰基化合物制备胶体钴分散体

    公开(公告)号:US4252674A

    公开(公告)日:1981-02-24

    申请号:US100307

    申请日:1979-12-04

    申请人: Thomas W. Smith

    发明人: Thomas W. Smith

    摘要: There is disclosed a method for the preparation of a homogeneous physically stable colloidal elemental cobalt dispersion of colloidal cobalt particles having a size in the range of from about 10 Angstrom units to about 200 Angstrom units. The method comprises preparing a solution of a passive polymer in an inert solvent, and incrementally adding thereto a cobalt precursor, at a temperature at which the cobalt precursor will lose at least one ligand and become bound to the passive polymer and thermally decompose to produce elemental cobalt particles, the process being carried out in an inert atmosphere. Such dispersions may be used per se as catalysts, or may be used for the preparation of supported colloidal cobalt catalysts. The dispersions may also be used for the preparation of ablative optical recording media.

    摘要翻译: 公开了一种用于制备尺寸在约10埃至约200埃单位的胶体钴颗粒的均匀的物理稳定的胶态元素钴分散体的方法。 该方法包括在惰性溶剂中制备被动聚合物的溶液,并在钴前体将失去至少一种配体并与被动聚合物结合并热分解产生元素的温度下逐渐加入钴前体 钴颗粒,该方法在惰性气氛中进行。 这种分散体本身可以用作催化剂,或者可以用于制备负载型胶体钴催化剂。 分散体也可用于制备烧蚀光学记录介质。

    Apparatus and method for stabilization of a thermistor temperature sensor
    88.
    发明授权
    Apparatus and method for stabilization of a thermistor temperature sensor 失效
    用于稳定热敏电阻温度传感器的装置和方法

    公开(公告)号:US4215336A

    公开(公告)日:1980-07-29

    申请号:US896974

    申请日:1978-04-17

    申请人: Thomas W. Smith

    发明人: Thomas W. Smith

    IPC分类号: G01K7/25 G01K7/22 G06G7/20

    CPC分类号: G01K7/25

    摘要: A thermistor temperature sensor having non-linear electrical response characteristics with temperature, a material constant, beta, that varies with temperature, and providing an output signal indicative of the temperature desired to be measured is utilized herein. A time dependent signal having a configuration that offsets the non-linear temperature dependence of the sensor output signal is generated and compared to the sensor output signal. Whenever the sensor output at least equals that of the offsetting signal, a comparator generates an output signal that, after appropriate delay, is indicative of the actual temperature. The material "constant" of the sensor is maintained substantially constant over at least a substantial range of temperatures. Additionally or alternatively, the sensor is energized in such manner as to substantially eliminate self-heating induced variations in the sensor output signal.

    摘要翻译: 本文中使用具有随温度而变化的温度,材料常数β的非线性电响应特性以及提供指示所要测量的温度的输出信号的热敏电阻温度传感器。 产生具有抵消传感器输出信号的非线性温度依赖性的配置的时间依赖信号,并与传感器输出信号进行比较。 每当传感器输出至少等于偏移信号的输出信号时,比较器就产生一个输出信号,在适当的延迟之后,该输出信号表示实际温度。 传感器的材料“常数”在至少相当大的温度范围内保持基本恒定。 附加地或替代地,传感器以这样的方式通电,以便基本上消除传感器输出信号中的自发热引起的变化。

    Method of tire cure control
    89.
    发明授权
    Method of tire cure control 失效
    轮胎固化控制方法

    公开(公告)号:US3980743A

    公开(公告)日:1976-09-14

    申请号:US403118

    申请日:1973-10-03

    申请人: Thomas W. Smith

    发明人: Thomas W. Smith

    IPC分类号: B29C35/02 G05B19/14 B29H5/02

    摘要: A system for controlling sequence and duration of the operational steps in processes such as vulcanization of a pneumatic tire is capable of operating under two basic modes or parameters. In one mode the operational steps are dictated by elapsed real time, while in the other mode, the operation can be dictated by elapsed cure equivalent factors. The desired length of each step or the cure, whether in time or cure equivalents, is set into an input program means. In the time mode, time generating circuitry provides an output proportional to elapsed time which output is displayed on a counter and electrically compared with the information in the input program means. When a match occurs, the time generating circuitry and displays are reset and the input program means directs the tire vulcanization press to perform the next sequential function. Also disclosed is circuitry which is capable of performing secondary functions such as extending the length of a step, as necessary. If it is desired to operate in the cure equivalent mode, a signal proportional to elapsed cure equivalents is developed by a cure equivalent generating circuitry which performs digital integration of the Arrhenius function. The input to cure equivalent generating circuitry can be a signal proportional to tire temperature developed by internal thermocouples or can be a signal which is directly proportional to the Arrhenius function as generated by a thermistor sensor.

    摘要翻译: 用于控制充气轮胎的硫化过程中的操作步骤的顺序和持续时间的系统能够在两种基本模式或参数下操作。 在一种模式中,操作步骤由经过的实时指定,而在另一种模式中,操作可以由经过的固化等效因子来决定。 每个步骤或固化的期望长度(无论是时间上还是固化等价物)被设置为输入程序装置。 在时间模式中,时间产生电路提供与计时器上显示的输出成比例的输出,并与输入程序装置中的信息进行电气比较。 当发生匹配时,时间生成电路和显示器被复位,并且输入程序意味着引导轮胎硫化机进行下一个顺序功能。 还公开了能够执行次要功能的电路,例如根据需要延长台阶的长度。 如果希望以固化等效模式操作,则通过执行Arrhenius功能的数字积分的固化等效产生电路来开发与经过的固化当量成比例的信号。 用于固化等效发电电路的输入可以是与由内部热电偶产生的轮胎温度成比例的信号,或者可以是与由热敏电阻传感器产生的Arrhenius函数成正比的信号。