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    • 48. 发明授权
    • Process for enriching 1,2-dichloro-1,1,2,2-tetrafluoroethane from a
mixture of dichlorotetrafluoroethane isomers
    • 从二氯四氟乙烷异构体的混合物中富集1,2-二氯-1,1,2,2-四氟乙烷的方法
    • US5866730A
    • 1999-02-02
    • US42200
    • 1993-04-02
    • V. N. Mallikarjuna Rao
    • V. N. Mallikarjuna Rao
    • C07C17/395C07C17/38
    • C07C17/395
    • A process is disclosed for enriching the amount of CFC-114 relative to the amount of CFC-114a from an initial mixture containing both isomers, by contacting said initial mixture with hydrogen chloride in the vapor phase at an elevated temperature in the presence of a catalyst to produce a product mixture containing C.sub.2 Cl.sub.2 F.sub.3 and chlorination products of CCl.sub.2 FCF.sub.3 wherein the weight ratio of CClF.sub.2 CClF.sub.2 to the total C.sub.2 Cl.sub.2 F.sub.4 is higher than the weight ratio of CClF.sub.2 CClF.sub.2 to the total C.sub.2 Cl.sub.2 F.sub.4 in the initial mixture. The chlorination products of CFC-114a (e.g., CCl.sub.3 CF.sub.3) in the product mixture may then be separated from the C.sub.2 Cl.sub.2 F.sub.4 therein (e.g., by distillation).
    • 公开了一种用于从含有两种异构体的初始混合物中相对于CFC-114a量相对于CFC-114a的量富集的方法,通过在催化剂存在下,在升高的温度下将所述初始混合物与气相中的氯化氢接触 以产生含有C2Cl2F3和CCl2FCF3的氯化产物的产物混合物,其中CClF 2 CClF 2与总C 2 Cl 2 F 4的重量比高于初始混合物中CClF 2 CClF 2与总C 2 Cl 2 F 4的重量比。 然后可以将产物混合物中的CFC-114a(例如CCl 3 CF 3)的氯化产物从其中的C2Cl2F4(例如通过蒸馏)分离。
    • 49. 发明授权
    • Perfluoroalkyl sulfonates, their preparation and use
    • 全氟烷基磺酸盐,其制备和用途
    • US5773637A
    • 1998-06-30
    • US708997
    • 1996-09-06
    • Walter Vladimir CichaAndreas Josef KornathRonald James McKinneyV. N. Mallikarjuna RaoJoseph Stuart ThrasherAlfred Waterfeld
    • Walter Vladimir CichaAndreas Josef KornathRonald James McKinneyV. N. Mallikarjuna RaoJoseph Stuart ThrasherAlfred Waterfeld
    • C07F5/00C07F7/00C07F9/00C07F9/68C07F9/90C07F9/94C07F11/00C07F9/70C07F7/22
    • C07F5/003C07F11/005C07F7/006C07F9/005C07F9/68C07F9/902C07F9/94
    • A process is disclosed for preparing a perfluoroalkyl sulfonate of the formula R.sub.a MX.sub.b-c O.sub.g �(SO.sub.3).sub.d (R.sub.f).sub.e !.sub.c. This process involves reacting a reagent of the fonnula R.sub.a MX.sub.b O.sub.g and a second reagent of the formula R'.sub.x E�(SO.sub.3).sub.d (R.sub.f).sub.e !.sub.y, where R is selected from the group consisting of C.sub.1 to C.sub.6 alkyl, C.sub.1 to C.sub.6 perfluoroalkyl, cyclopentadienyl (i.e., C.sub.5 H.sub.5), phenyl and perfluorophenyl; M is selected from the group consisting of transistion metals of groups 3 to 12, main group elements of group 13 to 16 and lanthanide metals; X is selected from the group consisting of F, Cl and Br; R.sub.f is selected from the group consisting of C.sub.h F.sub.2h+1, C.sub.h F.sub.2h, wherein h is an integer from 0 to 10, perfluorophenyl, C.sub.6 F.sub.4 (CF.sub.2).sub.2 i, wherein i is an integer from 0 to 6, provided that when E is boron, R.sub.f is selected from the group consisting of C.sub.h' F.sub.2h'+1, wherein h' is an integer from 1 to 10, perfluorophenyl; R' is selected from the group consisting of C.sub.j H.sub.2j+1, wherein j is an integer from 1 to 4, and phenyl; E is selected from the group consisting of B and Si; a is an integer from 0 to 3; b is an integer from 2 to 6; c is an integer from 1 to 6; d is an integer from 1 to 3; e is an integer from 1 to 4; g is an integer from 0 to 1; x is an integer from 0 to 3; and y is an integer from 1 to 3. Novel perfluoroalkyl sulfonates are provided, as are methods which employ perfluoroalkyl sulfonates as catalysts for increasing the fluorine content of halogenated hydrocarbons and as promoters for hydrocyanation of olefins.
    • 公开了制备式RaMXb-cOg [(SO3)d(Rf)e] c的全氟烷基磺酸盐的方法。 该方法包括使得式IaMXbOg的试剂与式R'xE [(SO3)d(Rf)e] y的第二试剂反应,其中R选自C1至C6烷基,C1至C6全氟烷基 ,环戊二烯基(即C 5 H 5),苯基和全氟苯基; M选自组3至12的交联金属,第13至16族的主要元素和镧系金属; X选自F,Cl和Br; Rf选自ChF2h + 1,ChF2h,其中h为0至10的整数,全氟苯基,C6F4(CF2)2i,其中i为0至6的整数,条件是当E为硼时,Rf 选自Ch'F2h'+ 1,其中h'是1至10的整数,全氟苯基; R'选自CjH2j + 1,其中j是1至4的整数,和苯基; E选自B和Si; a是从0到3的整数; b是2至6的整数; c是1至6的整数; d为1〜3的整数; e是1至4的整数; g是0到1的整数; x是0到3的整数; y是1至3的整数。提供新的全氟烷基磺酸盐,使用全氟烷基磺酸盐作为用于增加卤代烃的氟含量的催化剂和作为烯烃氢化氰化促进剂的方法。