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    • 7. 发明授权
    • Catalysis in halogen exchange reactions
    • 卤素交换反应中的催化
    • US6046358A
    • 2000-04-04
    • US351888
    • 1999-07-13
    • Bruce C. BerrisChi-Hung Cheng
    • Bruce C. BerrisChi-Hung Cheng
    • C07C17/20C07C25/13C07F9/02C07F9/06C07F9/54
    • C07F9/06C07C17/208C07F9/025
    • Impure tetra(dihydrocarbylamino)phosphonium halide is contacted with a liquid cyclic ether to dissolve the phosphonium halide and leave at least a portion of the impurities comprising at least quaternary ammonium halide or an amidophosphoxide remaining in the solid state. The solids and the liquid phase are separated from each other, an anhydrous non-solvent for the tetra(dihydrocarbylamino)phosphonium halide is mixed with the separated liquid phase to precipitate the tetra(dihydrocarbylamino)phosphonium halide, which is then separated from the liquid phase. The so-treated tetra(dihydrocarbylamino)phosphonium halide is more efficient as a catalyst for halogen exchange reactions than the original untreated tetra(dihydrocarbylamino)phosphonium halide.
    • 不纯的四(二烃基氨基)鏻卤化物与液体环状醚接触以溶解卤化鏻,并使至少一部分杂质至少包含季铵卤化物或酰胺二氧化物保持在固态。 将固体和液相彼此分离,用于四(二烃基氨基)鏻卤化物的无水非溶剂与分离的液相混合以沉淀四(二烃基氨基)鏻卤化物,然后将其从液相中分离出来 。 如此处理的四(二烃基氨基)鏻卤化物作为卤素交换反应的催化剂比原始未处理的四(二烃基氨基)鏻卤化物更有效。
    • 8. 发明授权
    • Scoop with a counter
    • 舀一个柜台
    • US5884523A
    • 1999-03-23
    • US120305
    • 1998-07-22
    • Jung-kuang ChengChi-hung Cheng
    • Jung-kuang ChengChi-hung Cheng
    • G01F19/00G02F19/00
    • G01F19/002
    • A scoop with a counter for powder material includes a scooping cup with a handle and a pusher that can slide to and fro on the handle of the scoop. On the front end of the pusher is a cover ring and on the rear end of the pusher is a top plate. At the end of the handle of the scooping cup is fitted a housing that is composed of a left casing and a right casing. On each casing there is a window and inside the casings is fitted a counter ratchet. A digit frame in a ring arrangement is attached to both sides of the counter ratchet. On the lower part of the housing is an opening so a toothed side of the counter ratchet is exposed to facilitate resetting adjustment. Also in the housing and at the toothed side of the counter ratchet is a flexible fixing plate to fix the counter ratchet. In operation, the pusher may be slid across the scooping cup where the cover ring at the front end of the pusher will level the powder material in the scooping cup to obtain a constant quantity of powder material. When the pusher is slid back, the top plate at the rear of the pusher will push and turn the counter ratchet which will then turn the next digit of the digit frame to count scooping frequency.
    • 具有用于粉末材料的计数器的勺子包括具有手柄的舀取杯和可在勺子的手柄上来回滑动的推动器。 在推动器的前端是一个盖环,并且推动器的后端是顶板。 在舀杯的手柄的末端装有由左壳体和右壳体组成的壳体。 在每个外壳上都有一个窗户,里面的外壳里装有一个反棘轮。 环形布置中的数字框架连接到计数棘轮的两侧。 在壳体的下部是开口,因此反向棘轮的齿面被暴露以便于复位调整。 另外在壳体中,在棘轮棘齿的齿形侧是用于固定反棘轮的柔性固定板。 在操作中,推动器可以滑动穿过舀杯,其中推动器前端处的盖环将使舀杯中的粉末材料平整以获得恒定量的粉末材料。 当推动器滑动时,推动器后部的顶板将推动并转动副棘爪,然后转动数字框的下一位数以计数舀取频率。
    • 10. 发明授权
    • Preparation of N-hydrocarbylthiophosphoric triamides
    • N-烃基硫代磷酸三酰胺的制备
    • US5770771A
    • 1998-06-23
    • US786396
    • 1997-01-21
    • Gerald M. SulzerChi Hung ChengW. Dirk KlobucarCharles H. Kolich
    • Gerald M. SulzerChi Hung ChengW. Dirk KlobucarCharles H. Kolich
    • C01C1/16C07F9/02C07F9/22C07F9/26
    • C01C1/164C07F9/025C07F9/224C07F9/26
    • Continuously fed to and mixed in a first reactor are (i) a preformed mixture of primary hydrocarbyl monoamine, tertiary amine and liquid inert organic solvent, and (ii) thiophosphoryl chloride while removing heat of reaction to maintain the reaction temperature in the range of about -20.degree. C. to about +50.degree. C. A reaction mixture containing N-hydrocarbylaminothiophosphoryl dichloride is formed. Ammonia and an effluent stream from the first reactor are continuously fed to and mixed in a second reactor in proportions of at least about 16 moles, of ammonia per mole of N-hydrocarbylaminothiophosphoryl dichloride that produce a reaction mixture containing N-hydrocarbylthiophosphoric triamide, and that keep in solution ammonium chloride co-product formed in the reaction. Heat of reaction is removed so that the temperature is high enough to keep ammonium chloride-ammonia complex from forming a solid phase in this reaction mixture, but low enough to avoid significant reduction in yield of N-hydrocarbylthiophosphoric triamide being formed. Effluent is withdrawn from the second reactor so as to maintain a substantially constant volume of reaction mixture in the second reactor. The process eliminates a difficult filtration of the co-product ammonium chloride formed in the second reaction. Also, it possible to accomplish this in a continuous process, with improved efficiency in large scale production of the N-hydrocarbylthiophosphoric triamides. Moreover, the ammonium chloride can be readily converted in the process to an industrially useful liquid co-product mixture.
    • 连续进料并混合在第一反应器中的是(i)主要烃基单胺,叔胺和液体惰性有机溶剂的预制混合物,和(ii)硫代磷酰氯,同时除去反应热,将反应温度保持在约 -20℃至约+ 50℃。形成含有N-烃基氨基硫代磷酰基二氯化物的反应混合物。 将氨和来自第一反应器的流出物流连续地进料至第二反应器中,其比例为至少约16摩尔,每摩尔N-烃基氨基硫代磷酰二氯的氨,其产生含有N-烃基硫代磷酰三酰胺的反应混合物,并且 保持反应中形成的溶液中氯化铵共同产物。 去除反应热,使得温度足够高以使氯化铵 - 氨络合物在该反应混合物中形成固相,但足够低以避免形成的N-烃基硫代磷酰三酰胺的产率显着降低。 将废水从第二反应器中排出,以便在第二反应器中维持反应混合物体积基本恒定。 该方法消除了在第二反应中形成的副产物氯化铵的难以过滤。 此外,可以在连续的方法中实现这一点,提高N-烃基硫代磷酸三酰胺的大规模生产的效率。 此外,氯化铵可以在工艺中容易地转化成工业上有用的液体共产物混合物。