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    • 1. 发明授权
    • Method for preparing perhalogenated five-membered cyclic compound
    • 制备全卤代五元环化合物的方法
    • US06218586B1
    • 2001-04-17
    • US09434277
    • 1999-11-05
    • Naoto TakadaMasatomi KanaiHideaki ImuraTakeo Komata
    • Naoto TakadaMasatomi KanaiHideaki ImuraTakeo Komata
    • C07C1708
    • C07C23/08C07C17/04C07C17/206C07C17/21
    • The invention relates to a method for preparing a fluorinated product that is a first perhalogenated five-membered cyclic compound (e.g., 1,2-dichlorohexafluorocyclopentene and 1,1-dichlorooctafluorocyclopentane). This method includes reacting in a gas phase a starting material that is a second perhalogenated five-membered cyclic compound having at least one unsaturated bond, at substantially the same time with chlorine and hydrogen fluoride, in the presence of a fluorination catalyst containing an activated carbon optionally carrying thereon a metal compound, thereby to decrease the number of the at least one unsaturated bond and to increase the number of fluorine atoms of the second compound. The method is appropriate for the production of the first perhalogenated five-membered cyclic compound in an industrial scale.
    • 本发明涉及一种制备作为第一全卤代五元环化合物(例如1,2-二氯六氟环戊烯和1,1-二氯八氟环戊烷)的氟化产物的方法。 该方法包括在气相中,在含有活性炭的氟化催化剂的存在下,将基本上同时具有至少一个不饱和键的第二全卤化五元环化合物的起始物质与氯和氟化氢反应 任选地带有金属化合物,从而减少至少一个不饱和键的数目并增加第二化合物的氟原子数。 该方法适用于以工业规模生产第一全卤代五元环化合物。
    • 2. 发明授权
    • Method for producing perhalogenated cyclopentene
    • 生产全卤代环戊烯的方法
    • US06395940B1
    • 2002-05-28
    • US09486608
    • 2000-03-01
    • Takeo KomataTakayuki NishimiyaFuyuhiko SakyuHideaki ImuraMikio UjiieMasatomi Kanai
    • Takeo KomataTakayuki NishimiyaFuyuhiko SakyuHideaki ImuraMikio UjiieMasatomi Kanai
    • C07C1720
    • C07C23/08C07C17/206C07C17/208C07C17/21
    • The invention relates to a method for producing a first perhalogenated cyclopentene represented by the general formula: C5ClBF8−B where B is an integer of from 0 to 7. The method includes a step of (a) fluorinating a second perhalogenated cyclopentene by hydrogen fluoride in a gas phase in the presence of a fluorination catalyst. The second perhalogenated cyclopentene is represented by general formula: C5ClAF8−A where A is an integer of from 1 to 8, and A is not smaller than B. With this method, the first perhalogenated cyclopentene (e.g., 1,2-dichloro-3,3,4,4,5,5-hexafluorocyclopentene, another chlorofluorinated cyclopentene, or octafluorocyclopentene) can continuously easily be produced, for example, from octachlorocyclopentene obtained by chlorination of hexachlorocyclopentadiene that is easily available. Therefore, the above method is very useful as an industrial scale production method. In case that the first perhalogenated cyclopentene is octafluorocyclopentene, the method may further include a step of (b) fluorinating a reaction product of the step (a) in a way that is different from that of the step (a), thereby to convert said reaction product of the step (a) into octafluoropentene. The step (a) may be conducted by a multistep reaction wherein there are provided “m” of reaction zones in number where m is an integer of from 2 to 10. In this case, the reaction zones are arranged in series and such that a reaction temperature of each reaction zone is independently controllable.
    • 本发明涉及一种制备由通式C5ClBF8-B表示的第一全卤代环戊烯的方法,其中B为0-7的整数。该方法包括以下步骤:(a)通过氟化氢将第二全卤代环戊烯氟化 在氟化催化剂存在下的气相。 第二全卤代环戊烯由通式C5ClAF8-A表示,其中A为1至8的整数,A不小于B.使用该方法,将第一全卤代环戊烯(例如1,2-二氯-3 ,3,4,4,5,5-六氟环戊烯,另一种氯氟化环戊烯或八氟环戊烯)可以连续容易地制备,例如由可以容易获得的六氯环戊二烯氯化获得的八氯环戊烯。 因此,上述方法作为工业规模生产方法是非常有用的。 在第一全卤代环戊烯是八氟环戊烯的情况下,该方法还可以包括以下步骤:(b)以与步骤(a)不同的方式氟化步骤(a)的反应产物,从而将所述 步骤(a)的反应产物进入八氟戊烯。 步骤(a)可以通过多步反应进行,其中m为2〜10的整数的“m”个反应区。在这种情况下,反应区串联排列,使得 每个反应区的反应温度是独立可控的。
    • 10. 发明授权
    • Method for producing 3,3-dichloro-1,1,1-triflouroacetone
    • 3,3-二氯-1,1,1-三氟丙酮的制备方法
    • US5905174A
    • 1999-05-18
    • US60180
    • 1998-04-15
    • Masatomi KanaiTakashi SakayaMineo WatanabeYoshihiko GotoRyo Nadano
    • Masatomi KanaiTakashi SakayaMineo WatanabeYoshihiko GotoRyo Nadano
    • B01J27/08B01J27/125C07C45/63C07C45/82C07C45/83C07C45/00
    • C07C45/82B01J27/08B01J27/125C07C45/63C07C45/83
    • The invention relates to a method for producing 3,3-dichloro-1,1,1-trifluoroacetone. This method includes a step of fluorinating pentachloroacetone by hydrogen fluoride in the presence of a fluorination catalyst. This fluorination may be conducted in a liquid phase in the presence of an antimony compound as the fluorination catalyst. Alternatively, the fluorination may be conducted in a gas phase in the presence of a fluorination catalyst which may be a fluorinated alumina or at least one compound of at least one metal selected from Al, Cr, Mn, Ni, and Co. The method is suited to an industrial scale production of 3,3-dichloro-1,1,1-trifluoroacetone. The invention further relates to another method for producing 3,3-dichloro-1,1,1-trifluoroacetone. This method includes a step of purifying a crude 3,3-dichloro-1,1,1-trifluoroacetone by a distillation in the presence of water, thereby to produce 3,3-dichloro-1,1,1-trifluoroacetone which is substantially free of organic matters other than 3,3-dichloro-1,1,1-trifluoroacetone. This crude 3,3-dichloro-1,1,1-trifluoroacetone may be the reaction products of the fluorination of pentachloroacetone in a gas phase. Due to the provision of the another method, 3,3-dichloro-1,1,1-trifluoroacetone can be produced with high yield.
    • 本发明涉及一种生产3,3-二氯-1,1,1-三氟丙酮的方法。 该方法包括在氟化催化剂存在下用氟化氢氟化五氯丙酮的步骤。 该氟化可以在作为氟化催化剂的锑化合物的存在下在液相中进行。 或者,氟化可以在可以是氟化氧化铝或至少一种选自Al,Cr,Mn,Ni和Co的至少一种金属的化合物的氟化催化剂的存在下在气相中进行。该方法是 适合工业规模生产3,3-二氯-1,1,1-三氟丙酮。 本发明还涉及制备3,3-二氯-1,1,1-三氟丙酮的另一种方法。 该方法包括在水存在下通过蒸馏纯化粗制3,3-二氯-1,1,1-三氟丙酮的步骤,从而产生3,3-二氯-1,1,1-三氟丙酮,其基本上 不含3,3-二氯-1,1,1-三氟丙酮以外的有机物。 该粗的3,3-二氯-1,1,1-三氟丙酮可以是五氯丙酮在气相中氟化的反应产物。 由于提供另一种方法,可以高产率制备3,3-二氯-1,1,1-三氟丙酮。