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11 条记录 (耗时 0.013 秒)

    Process for preparing substituted benzotrihalides
    1.
    发明授权
    Process for preparing substituted benzotrihalides 失效
    取代苯并三卤化物的制备方法

    公开(公告)号：US4334111A

    公开(公告)日：1982-06-08

    申请号：US878845

    申请日：1978-02-17

    申请人： Ralph A. Davis ,  R. Garth Pews

    发明人： Ralph A. Davis ,  R. Garth Pews

    IPC分类号： C07C17/363 ,  C07C51/58 ,  C07C205/06 ,  C07C205/12 ,  C07C21/24

    CPC分类号： C07C17/363 ,  C07C51/58

    摘要： Benzotrihalides are prepared by pyrolyzing a substituted phenyl trihaloacetate of the formula ##STR1## wherein each X is halo, nitro, alkyloxy, aryloxy, aralkyoxy, cyano, lower alkyl, haloalkyl, haloalkyloxy, alkenyl, haloalkenyl, carbamoyl, N,N-dialkylcarbamoyl, N,N-diarylcarbamoyl, or N,N-diaralkyloxy;Y is halo; andn is an integer of from 1 to 5. As an example, 4-chlorophenyl trichloroacetate is pyrolyzed at 550.degree. C. to 4-chlorobenzotrichloride.

    摘要翻译： 苯并三卤化物是通过热分解式为“IMAGE”的取代的三卤代苯基苯，其中每个X是卤素，硝基，烷氧基，芳氧基，芳烷氧基，氰基，低级烷基，卤代烷基，卤代烷氧基，烯基，卤代烯基，氨基甲酰基，N，N-二烷基氨基甲酰基， N，N-二芳基氨基甲酰基或N，N-二芳烷氧基; Y是卤素; n为1〜5的整数。作为实例，将三氯乙酸4-氯苯酯在550℃下热解成4-氯三氯甲苯。

    Electric bed heating device
    3.
    发明授权
    Electric bed heating device 失效
    电动床加热装置

    公开(公告)号：US4491721A

    公开(公告)日：1985-01-01

    申请号：US385518

    申请日：1982-06-07

    申请人： Ralph A. Davis

    发明人： Ralph A. Davis

    IPC分类号： A47C21/04 ,  F24H3/00 ,  H05B3/00

    CPC分类号： A47C21/048

    摘要： An electric bed heating device for attachment to the understructure of a bed for supplying heat to a sleeper includes an electric heating element mounted below a metallic plate thermally insulated on its upper side and having a lower face shaped to radially downwardly direct heat. In one embodiment the heating element is directly supported by vertical fins extending downwardly and radially outwardly from the lower face of the plate with the fins and heating element being exposed. In another arrangement a serially slit lower metallic plate is spaced below the first mentioned plate to allow flow of air therebetween. The lower plate supports an electric heating element in the path of the air flow. The slits in the lower plate form offset air inlet and outlet openings. The plates are aligned and attached to the bed structure by a central fastener binding the plates together. The upper face of the lower plate is roughened and blackened to enhance heat absorption. The device may be provided with a timer, thermostat or thermal fuse in circuit with the heating element for controlling operation of the heating element. In use the heating device distributes heated air across the underside of the bedding thereby creating temperatures above ambient in the area bounded by a vertical bed covering extending about the periphery of the bed and which restricts the heated air from flowing from beneath the bed.

    摘要翻译： 一种用于连接到用于向卧铺器供热的床的底部结构的电加热装置包括：电加热元件，其安装在其上侧绝热的金属板下方并且具有成形为径向向下引导热的下表面。 在一个实施例中，加热元件直接由垂直翅片支撑，垂直翅片从板的下表面向下并径向向外延伸，翅片和加热元件被暴露。 在另一种布置中，连续切割的下金属板在第一提到的板的下方间隔开，以允许其间的空气流动。 下板在气流的路径中支撑电加热元件。 下板中的狭缝形成偏置空气入口和出口。 板通过将板结合在一起的中心紧固件对准并附接到床结构。 下板的上表面被粗糙化并变黑，以增强热吸收。 该装置可以设置有用于控制加热元件的操作的加热元件的电路中的定时器，恒温器或热熔断器。 在使用中，加热装置将热空气分布在床垫的下侧，从而在由围绕床的周边延伸的垂直床罩限定的区域中产生高于环境温度，并限制加热的空气从床下方流出。

    Preparation of organic halides
    6.
    发明授权
    Preparation of organic halides 失效
    有机卤化物的制备

    公开(公告)号：US4197262A

    公开(公告)日：1980-04-08

    申请号：US957491

    申请日：1978-11-03

    申请人： Ralph A. Davis

    发明人： Ralph A. Davis

    IPC分类号： C07C17/20

    CPC分类号： C07C17/204

    摘要： Organic halides containing at least one halogen-replaceable bromine atom are reacted with chlorine in the presence of a catalyst selected from the group consisting of the halides of antimony, tin, zinc, or vanadium to form a corresponding organic halide having at least the one bromine atom replaced by a chlorine atom.

    摘要翻译： 含有至少一个卤素可置换溴原子的有机卤化物与氯在选自锑，锡，锌或钒的卤化物的催化剂存在下与氯反应，形成相应的有机卤化物，其至少含有一个溴 原子被氯原子取代。

    Process for production of .gamma.-halonitriles
    9.
    发明授权
    Process for production of .gamma.-halonitriles 失效
    生产“-HALONITRILES”的方法

    公开(公告)号：US4001293A

    公开(公告)日：1977-01-04

    申请号：US564252

    申请日：1975-04-02

    申请人： James H. Plonka ,  Ralph A. Davis

    发明人： James H. Plonka ,  Ralph A. Davis

    IPC分类号： C07C120/04

    摘要： A new process for preparing .gamma.-halonitriles comprising reacting by contacting a 1,3-dihalopropane, such as 1-chloro-3-bromopropane, or mixtures thereof, such as 1-chloro-3-bromopropane and 1-chloro-3-iodopropane, with an alkali metal cyanide, such a sodium cyanide, in the presence of an onium salt, such as benzyltriethylammonium chloride, and an alkali metal halide, such as sodium chloride. The .gamma.-halonitriles are useful in preparing cyclopropylcyanide, a herbicide intermediate.