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50 条记录 (耗时 0.019 秒)

    Production of 2-phosphonobutane-1,2,4-tricarboxylic acid and the alkali metal salts thereof
    14.
    发明授权
    Production of 2-phosphonobutane-1,2,4-tricarboxylic acid and the alkali metal salts thereof 失效
    2-膦酰基丁烷-1,2,4-三羧酸及其碱金属盐的制备

    公开(公告)号：US5639909A

    公开(公告)日：1997-06-17

    申请号：US650681

    申请日：1996-05-20

    申请人： Christoph Holzner ,  Wolfgang Ohlendorf ,  Hans-Dieter Block ,  Horst Bertram ,  Roland Kleinstuck ,  Hans-Heinrich Moretto

    发明人： Christoph Holzner ,  Wolfgang Ohlendorf ,  Hans-Dieter Block ,  Horst Bertram ,  Roland Kleinstuck ,  Hans-Heinrich Moretto

    IPC分类号： C07F9/38 ,  C07F9/40

    CPC分类号： C07F9/3808 ,  C07F9/4006

    摘要： This invention relates to an improved process for the production of 2-phosphono-butane-1,2,4-tricarboxylic acid (PBTC) and the alkali metal salts thereof, in which process dialkyl phosphite, preferably dimethyl or diethyl phosphite, and ethene-1,2-dicarboxylic acid dialkyl ester, in particular the dimethyl or diethyl ester of maleic acid and/or fumaric acid, are initially reacted in the presence of a basic catalyst to yield a phosphonosuccinic acid tetraalkyl ester, the resultant ester is thereupon reacted without further working up with acrylic acid alkyl ester, preferably methyl or ethyl acrylate, in the presence of an alkaline catalyst and the reaction product obtained in this manner is saponified without further working up to yield PBTC or the alkali metal salts thereof. The product when mixed with bleaching lye exhibits reduced chlorine depletion.

    摘要翻译： 本发明涉及一种制备2-膦酰基 - 丁烷-1,2,4-三羧酸（PBTC）及其碱金属盐的改进方法，其中亚磷酸二烷基酯，优选亚磷酸二甲酯或二乙酯和乙烯 - 1,2-二羧酸二烷基酯，特别是马来酸和/或富马酸的二甲基酯或二乙酯，最初在碱性催化剂存在下反应，得到磷酸二琥珀酸四烷基酯，得到的酯随后反应而没有 进一步用丙烯酸烷基酯，优选丙烯酸甲酯或丙烯酸乙酯在碱性催化剂的存在下进行处理，将以这种方式获得的反应产物进行皂化而不进一步加工得到PBTC或其碱金属盐。 当与漂白碱液混合时，产品会减少氯的消耗。

    Process for the production of perfluoroalkylsulphonyl fluorides and electrodes for performance of the process
    17.
    发明授权
    Process for the production of perfluoroalkylsulphonyl fluorides and electrodes for performance of the process 失效
    用于生产全氟烷基磺酰基氟化物和电极的方法，用于实施该方法

    公开(公告)号：US5364507A

    公开(公告)日：1994-11-15

    申请号：US100241

    申请日：1993-08-02

    申请人： Andreas Bulan ,  Rainer Weber ,  Zbigniew Muziol ,  Hartmut Schlecker ,  Hans-Heinrich Moretto

    发明人： Andreas Bulan ,  Rainer Weber ,  Zbigniew Muziol ,  Hartmut Schlecker ,  Hans-Heinrich Moretto

    IPC分类号： C07C309/80 ,  C07C303/22 ,  C25B3/08 ,  C25B11/04 ,  C25B11/06

    CPC分类号： C07C303/22 ,  C25B11/04 ,  C25B3/08

    摘要： The present invention provides a process for the production of perfluoroalkylsulphonyl fluorides of the formula C.sub.n F.sub.2n+1 SO.sub.2 F with n=6-10 by electrochemical fluorination of alkylsulphonyl halides of the general formula C.sub.n H.sub.2n+1 SO.sub.2 X with n=6-10 and X=F, Cl, Br or I in hydrogen fluoride, which process is characterised in that electrodes are used which consist of nickel with a columnar structure or which are coated with nickel with a columnar structure as shown in FIG. 1.The invention also provides electrodes for the production of perfluoroalkylsulphonyl fluorides from the corresponding alkylsulphonyl halides by electrochemical fluorination in hydrogen fluoride, which electrodes are characterised in that they consist of nickel with a columnar structure or are coated with nickel with a columnar structure.

    摘要翻译： 本发明提供通过电化学氟化通式C n H 2n + 1 SO 2 X的烷基磺酰卤，n = 6-10和X = F，Cl，制备式C n F 2n + 1 SO 2 F的全氟烷基磺酰氟的n = 6-10的方法， Br或I在氟化氢中，其特征在于使用由具有柱状结构的镍组成的电极，或者如图1所示用柱状结构的镍涂覆的电极。 本发明还提供用于通过氟化氢中的电化学氟化从相应的烷基磺酰卤生产全氟烷基磺酰氟的电极，该电极的特征在于它们由具有柱状结构的镍组成或用柱状结构的镍涂覆。

    Preparation of silanes
    20.
    发明授权
    Preparation of silanes 失效
    硅烷的制备

    公开(公告)号：US4202831A

    公开(公告)日：1980-05-13

    申请号：US15375

    申请日：1979-02-26

    申请人： Ottfried Schlak ,  Hans-Heinrich Moretto

    发明人： Ottfried Schlak ,  Hans-Heinrich Moretto

    IPC分类号： B01J23/00 ,  B01J27/00 ,  B01J31/00 ,  C07B61/00 ,  C07F7/08 ,  C07F7/18

    CPC分类号： C07F7/1884 ,  C07F7/0896

    摘要： A process for the preparation of a silane of the formulaR.sub.a SiH.sub.b (OR').sub.4-(a+b)whereinR is optionally substituted alkyl, alkenyl or aryl with up to 7 C atoms,R' is alkyl with 1 to 4 C atoms,a and b each independently is 1, 2 or 3, anda+b is at most 4,comprising reacting an Si-H polysiloxane with a compound of the formulaR.sub.a Si(OR').sub.4-ain the presence of a conventional redox-stable siloxane polymerization catalyst which favors the exchange reaction. Advantageously the catalyst is AlCl.sub.3 and R and R' are methyl, ethyl, vinyl or phenyl.

    摘要翻译： 制备式R a SiHb（OR'）4 - （a + b）的硅烷的方法，其中R是具有至多7个C原子的任选取代的烷基，烯基或芳基，R'是具有1至4个C原子的烷基 a和b各自独立地为1,2或3，a + b为至多4，包括使Si-H聚硅氧烷与式RaSi（OR'）4-a化合物在常规氧化还原 稳定的硅氧烷聚合催化剂，有利于交换反应。 有利地，催化剂是AlCl 3，R和R'是甲基，乙基，乙烯基或苯基。