Cephalosporin-type antibiotics and process for producing the same
    1.
    发明授权
    Cephalosporin-type antibiotics and process for producing the same 失效
    CEPHALOSPORIN型抗生素及其生产方法

    公开(公告)号:US4113944A

    公开(公告)日:1978-09-12

    申请号:US588555

    申请日:1975-06-19

    CPC分类号: C07D501/36

    摘要: A cephalosporin compound represented by the formula (I) or (I') ##STR1## wherein R.sup.1 represents a phenyl group, a 2-thienyl group or a phenoxy group; R.sup.2 represents a hydrogen atom, an alkyl group having 1 to 4 carbon atoms which may be substituted with a phenyl group, an alkoxy group having 1 to 4 carbon atoms or a halogen atom, or a phenyl group which may be substituted with one or two groups selected from the group consisting of a halogen atom, a nitro group, an alkyl group having 1 to 4 carbon atoms and an alkoxy group having 1 to 4 carbon atoms; R.sup.3 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms which may be substituted with a monoalkylamino group having 1 to 4 carbon atoms in the alkyl moiety thereof, a dialkylamino group having 1 to 4 carbon atoms in each alkyl moiety thereof, a halogen atom or a phenyl group which may be substituted with one to three groups selected from the group consisting of a halogen atom, a nitro group, an alkyl group having 1 to 4 carbon atoms and an alkoxy group having 1 to 4 carbon atoms; R.sup.4 represents an alkyl group having 1 to 4 carbon atoms; A has up to 15 carbon atoms and represents a straight or branched chain alkylene group, a straight or branched chain alkenylene group, a straight or branched chain alkadienylene group or a phenylene group, and n is 0 or 1; or the salt thereof; and a process for preparing the same.

    Process for preparing cephalosporanic acid derivatives
    2.
    发明授权
    Process for preparing cephalosporanic acid derivatives 失效
    制备头孢菌酸衍生物的方法

    公开(公告)号:US4175185A

    公开(公告)日:1979-11-20

    申请号:US892179

    申请日:1978-03-31

    IPC分类号: C07D501/20 C07D501/26

    CPC分类号: C07D501/26

    摘要: A process for preparing a cephalosporanic acid derivative or a 7-acylaminocephalosporanic acid derivative which comprises subjecting an esterifying agent to reaction in liquid sulfur dioxide in the presence of a base with an N-protected-cephalosporin C to obtain a diester, subjecting the diester to reaction in an inert solvent with an iminohalide forming agent to produce an iminohalide, subjecting the iminohalide with a lower alcohol to produce an iminoether, subjecting the product produced, after subjecting the iminoether to reaction with a reactive derivative of an organic acid, to hydrolysis and further eliminating the ester group of the carboxylic acid.

    摘要翻译: 一种制备头孢菌酸衍生物或7-酰氨基头孢烷酸衍生物的方法,其包括在碱存在下,用N-保护型头孢菌素C使酯化剂在液态二氧化硫中进行反应,得到二酯, 在惰性溶剂中与亚氨基卤化物形成剂反应以产生亚氨基卤化物,使亚氨基卤化物与低级醇反应生成亚氨基醚,使亚氨基醚与有机酸的反应性衍生物反应后生成的产物水解和 进一步消除羧酸的酯基。

    Exhaust valve for supercritical fluid chromatograph
    5.
    发明授权
    Exhaust valve for supercritical fluid chromatograph 失效
    超临界流体色谱仪排气阀

    公开(公告)号:US5031448A

    公开(公告)日:1991-07-16

    申请号:US465949

    申请日:1990-01-16

    申请人: Toshinori Saito

    发明人: Toshinori Saito

    IPC分类号: G01N30/02 F16K17/04 G01N30/32

    摘要: An exhaust valve for a supercritical fluid chromatography apparatus. The exhaust valve is a constant-pressure release valve which maintains the pressure inside the flow passage system of the apparatus constant. Eluates are discharged via the valve. An organic solvent effective at atmospheric pressures, such as toluene, dichloromethane, or benzene, which readily dissolves the analyzed sample at ordinary temperature, is introduced either in the flow passage on the upstream side of the valve or in the flow passage in the valve to prevent the flow passage in the valve from clogging.

    摘要翻译: 一种超临界流体色谱仪的排气阀。 排气阀是将设备的流路系统内的压力保持恒定的恒压释放阀。 洗脱液通过阀排出。 在常压下有效的有机溶剂如甲苯,二氯甲烷或苯,在常温下容易溶解所分析的样品,可以在阀的上游侧的流动通道或阀的流动通道中引入到 防止阀门中的流路堵塞。

    Two-stage pump assembly
    8.
    发明授权
    Two-stage pump assembly 失效
    两级泵组件

    公开(公告)号:US4681513A

    公开(公告)日:1987-07-21

    申请号:US823341

    申请日:1986-01-28

    摘要: An accurately controllable two-stage pump assembly comprising two plunger pumps connected in series. The suction port of the outlet pump A is connected to the discharge port of the inlet pump B, so that the discharge port of the outlet pump A and the suction port of the inlet pump B act as the discharge port and the suction port, respectively, of the whole pump assembly. While the inlet pump B is delivering fluid from the whole pump assembly, the outlet pump A completes the filling stroke of the whole pump assembly and fully increases the pressure inside the chamber of the outlet pump A. While the inlet pump B is filling, the outlet pump A is in the stage of displacement stroke and delivers fluid from the whole pump assembly. The plungers of the pumps are moved via cams by stepper motors which swing or rotate back and forth within a certain angular range.

    摘要翻译: 一个可精确控制的两级泵组件,包括串联连接的两个柱塞泵。 出口泵A的吸入口与入口泵B的排出口连接,排出口A的排出口和入口泵B的吸入口分别作为排出口和吸入口 ,整个泵组件。 当入口泵B从整个泵组件输送流体时,出口泵A完成整个泵组件的填充冲程,并完全增加出口泵A的腔室内的压力。当入口泵B正在填充时, 出口泵A处于排量行程阶段,并从整个泵组件输送流体。 泵的柱塞通过在一定角度范围内摆动或旋转的步进电机通过凸轮移动。

    METHOD OF IMPARTING FUNCTION TO MOLDED POLYMER AND APPARATUS THEREFOR
    10.
    发明申请
    METHOD OF IMPARTING FUNCTION TO MOLDED POLYMER AND APPARATUS THEREFOR 审中-公开
    将功能模糊成聚合物及其装置的方法

    公开(公告)号:US20100075068A1

    公开(公告)日:2010-03-25

    申请号:US12516133

    申请日:2007-11-27

    摘要: There are provided a method for imparting a high-durability function to a polymer formed article, which can efficiently impart various function-imparting agents to the polymer formed article, can decrease processing waste liquid as much as possible and recover the waste liquid and the function-imparting agents, can also reuse them as needed, and moreover, can impart the function-imparting agents to the polymer formed article by a continuous system, not by a batch system; and an apparatus thereof.A method for imparting a function to a polymer formed article, which comprises spraying a supercritical fluid to the polymer formed article to firmly fix a function-imparting agent to the polymer formed article.

    摘要翻译: 提供了一种赋予聚合物成型制品高耐久性功能的方法,其可以有效地赋予聚合物成型制品各种功能赋予剂,可以尽可能地减少加工废液并回收废液和功能 还可以根据需要再利用它们,而且可以通过连续系统而不是分批系统赋予聚合物成型制品功能赋予剂; 及其装置。 赋予聚合物成型体功能的方法,其包括将超临界流体喷射到聚合物成型体上,以将功能赋予剂牢固地固定在聚合物成型体上。