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13 条记录 (耗时 0.014 秒)

    Process of producing alkali metal orthophosphates
    1.
    发明授权
    Process of producing alkali metal orthophosphates 失效
    生产碱金属对羟基磷酸酯的方法

    公开(公告)号：US3615184A

    公开(公告)日：1971-10-26

    申请号：US3615184D

    申请日：1967-12-29

    申请人： BENCKISER GMBH JOH A

    发明人： GEHRIG OSKAR ,  RIEHM THEODOR

    IPC分类号： C01B25/30

    CPC分类号： C01B25/301 ,  Y10S159/25

    摘要： Alkali metal salts of orthophosphoric acid are obtained by continuously reacting the required amounts of concentrated phosphoric acid with 40 percent to 65 percent of phosphorus pentoxide, with a 40 percent to 70 percent alkali metal hydroxide solution in a flash reactor, continuously passing the resulting reaction product through a single-effect or a multiple-effect evaporator which may be under vacuum to concentrate the same, thereby utilizing the steam set free in the reactor and, if multiple-effect evaporators are used, the steam generated in each preceding evaporator to heat the following evaporator, and separating the crystals from the mother liquor which may be recirculated into the reactor and/or the evaporators. Proceeding in this manner permits one to produce crystalline alkali metal orthophosphates in substantially dry form without additional supply of heat energy. The apparatus assembly for carrying out this improved process consists of a flash reactor with stirring device, a single-effect evaporator or a multiple-effect evaporator connected in series with the reactor, a device for separating crystals from liquid such as a centrifuge, and a vacuum device. Pipes connecting the evaporators with, and conducting the condensed steam therefrom to, heat exchangers for preheating the reaction components may be provided, likewise pipes connecting the liquid discharge of the separating device with the reactor and/or the evaporators. Examples of alkali metal orthophosphates obtained by the process and apparatus of this invention are monosodium and monopotassium orthophosphates, disodium orthophosphates with and without water of crystallization, trisodium orthophosphate.

    N-(1,1-di-phosphono ethyl) acetamidine, process of making it, and method of using it for preventing scale formation
    5.
    发明授权
    N-(1,1-di-phosphono ethyl) acetamidine, process of making it, and method of using it for preventing scale formation 失效
    N-（1,1-二膦酰基乙基）乙脒，其制备方法，及其用于防止结垢形成的方法

    公开(公告)号：US3919297A

    公开(公告)日：1975-11-11

    申请号：US45636674

    申请日：1974-03-29

    申请人： BENCKISER GMBH JOH A

    发明人： KRUEGER FRIEDRICH ,  MICHEL WALTER

    IPC分类号： C02F5/14 ,  C07F9/38

    CPC分类号： C02F5/14 ,  C07F9/3873

    摘要： N-(1,1-Di-phosphono ethyl) acetamidine has proved to be an excellent agent for preventing scale and deposit formation in aqueous systems, even when added in substoichiometric amounts. It is produced by reacting urea or acetylurea with acetylchloride and phosphorous acid or a mixture of phosphorus trichloride and water in an amount sufficient to produce phosphorous acid. The acetylchloride may be formed during the reaction from phosphorous trichloride and glacial acetic acid or acetic acid anhydride.

    摘要翻译： 已证明，N-（1,1-二膦酰基乙基）乙脒是用于防止水性体系中的结垢和沉积物形成的优良剂，即使以亚化学计量的量加入也是如此。 它是通过使尿素或乙酰脲与乙酰氯和亚磷酸或三氯化磷与水的混合物反应而制得的，其用量足以产生亚磷酸。 在三氯化磷和冰醋酸或乙酸酐的反应过程中可能形成乙酰氯。

    Process of treating laundry in laundry driers
    9.
    发明授权
    Process of treating laundry in laundry driers 失效
    在洗衣干燥机中处理衣物的过程

    公开(公告)号：US3872604A

    公开(公告)日：1975-03-25

    申请号：US46052874

    申请日：1974-04-12

    申请人： BENCKISER GMBH JOH A

    发明人： KELLER HERBERT

    IPC分类号： C11D3/00 ,  C11D11/00 ,  D06F58/20 ,  D06M13/46 ,  F26B3/00

    CPC分类号： D06M13/46 ,  C11D3/001 ,  C11D11/0017 ,  C11D17/0043 ,  D06F58/203

    摘要： The novel and advantageous process of treating laundry comprises predrying the washed and rinsed laundry to a predetermined degree of dryness such as to a moisture content between 5 and 70 percent and preferably to a moisture content of about 15 percent, subjecting the predried laundry, preferably in a laundry drier, to the action of laundry treating agents, such as brighteners, antistatic, softening, aromatizing, and the like agents, preferably by spraying said agents thereon, and completing drying of the laundry. Thereby, any moldy smell of the laundry and/or its becoming electrostatically charged are eliminated and/or the properties of the finished laundry are considerably improved. Drying is preferably effected in laundry dryers of the tumbler type and the treating composition is preferably sprayed on the laundry in aerosol form.

    摘要翻译： 处理衣物的新颖和有利的方法包括将经洗涤和漂洗的衣物预干燥至预定干燥度，例如水分含量为5至70％，优选为约15％的水分含量，将预干燥的衣物，优选地 衣物干燥器，优选通过在其上喷洒所述试剂，并完成衣物的干燥来实现衣物处理剂如增白剂，抗静电，软化，芳构化等作用。 因此，消除了衣物和/或其变得静电充电的任何发霉的气味和/或成品衣物的性质得到显着改善。 干燥优选在转筒式衣物干燥器中进行，并且处理组合物优选以气溶胶形式喷洒在衣物上。