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    • 13. 发明授权
    • Method for producing 1,1,1,3,3-pentafluoropropane
    • 制备1,1,1,3,3-五氟丙烷的方法
    • US06235951B1
    • 2001-05-22
    • US08752879
    • 1996-11-20
    • Fuyuhiko SakyuSatoshi YoshikawaYasuo HibinoYoshihiko GotohRyouichi Tamai
    • Fuyuhiko SakyuSatoshi YoshikawaYasuo HibinoYoshihiko GotohRyouichi Tamai
    • C07C1700
    • C07C19/08C07C17/00C07C17/087C07C17/37C07C21/18C07C19/10
    • The present invention relates to a method for producing 1,1,1,3,3-pentafluoropropane. This method includes the steps of (a) adding hydrogen fluoride to 1-chloro-3,3,3-trifluoropropene in the presence of an addition catalyst to obtain 1,1,1,3-tetrafluoro-3-chloropropane; and (b) disproportionating the 1,1,1,3-tetrafluoro-3-chloropropane into the 1,1,1,3,3-pentafluoropropane and 1,1,1-trifluoro-3,3-dichloropropane, in the presence of a disproportionation catalyst. This method is a useful method for producing 1,1,1,3,3-pentafluoropropane in an industrial scale, because its steps (a) and (b) are respectively superior in selectivity and yield. According to the invention, 1-chloro-3,3,3-trifluoropropene may be produced by a method including a step of reacting 1,1,1,3,3-pentachloropropane with hydrogen fluoride in a gas phase in the presence of a fluorination catalyst. This method is useful, because yield of 1-chloro-3,3,3-trifluoropropene is high.
    • 本发明涉及一种生产1,1,1,3,3-五氟丙烷的方法。 该方法包括以下步骤:(a)在加成催化剂存在下,向1-氯-3,3,3-三氟丙烯中加入氟化氢,得到1,1,1,3-四氟-3-氯丙烷; 和(b)在存在下将1,1,1,3-四氟-3-氯丙烷歧化成1,1,1,3,3-五氟丙烷和1,1,1-三氟-3,3-二氯丙烷 的歧化催化剂。 由于其步骤(a)和(b)分别优选选择性和产率,所以该方法是以工业规模生产1,1,1,3,3-五氟丙烷的有用方法。 根据本发明,1-氯-3,3,3-三氟丙烯可以通过包括以下步骤制备的方法:使1,1,1,3,3-五氯丙烷与氟化氢在气相中在 氟化催化剂。 该方法是有用的,因为1-氯-3,3,3-三氟丙烯的产率高。
    • 16. 发明授权
    • Process for producing propargyl bromide
    • 产生炔丙基溴的方法
    • US06794551B2
    • 2004-09-21
    • US10231571
    • 2002-08-30
    • Christopher L. MeroHassan Y. ElnagerRobert C. Herndon, Jr.
    • Christopher L. MeroHassan Y. ElnagerRobert C. Herndon, Jr.
    • C07C1700
    • C07C17/16C07C21/22
    • This invention provides a process of producing propargyl bromide in the absence of a base. The process comprises: A) bringing together in a reaction zone under an inert atmosphere and in the absence of a base and in the presence of an inert diluent, a feed of phosphorus tribromide and a separate feed of propargyl alcohol thereby forming a reaction mixture; B) while mechanically agitating the mixture being formed in A), maintaining the temperature of the mixture in the range of about 0° C. to about 25° C. to form a product mixture, and then C) raising the temperature of the product mixture to a temperature in the range of about 40° C. to about 60° C. while stirring the product mixture for a ride period of at least about 2.5 hours. Such process can be conducted as a batch process, as a semi-batch process, or as a continuous process.
    • 本发明提供了在不存在碱的情况下生产炔丙基溴的方法。 该方法包括:A)在惰性气氛下和不存在碱的情况下,在惰性稀释剂存在下,在反应区中一起加入三溴化磷的进料和炔丙醇的单独进料,从而形成反应混合物; B)同时机械搅拌在A)中形成的混合物,将混合物的温度保持在约0℃至约25℃的范围内以形成产物混合物,然后C)提高产物混合物的温度 在约40℃至约60℃的温度范围内,同时搅拌产物混合物至少约2.5小时的运行时间。该方法可以作为间歇方法进行,作为半间歇方法 ,或作为连续过程。