Process for the manufacture of 2,3-perfluoro-1,4-dioxanes as well as
some special representatives of compounds of this class
    74.
    发明授权
    Process for the manufacture of 2,3-perfluoro-1,4-dioxanes as well as some special representatives of compounds of this class 失效
    制备2,3-全氟-1,4-二恶烷的方法以及该类化合物的一些特殊代表

    公开(公告)号:US4343742A

    公开(公告)日:1982-08-10

    申请号:US225150

    申请日:1981-01-14

    IPC分类号: C07D319/12

    CPC分类号: C07D319/12

    摘要: 2,3-Perfluoro-1,4-dioxanes of the formula I ##STR1## wherein X and Y independently from one another mean F or CF.sub.3, are manufactured by reacting carbonyl compounds of the formula II ##STR2## wherein X has the same meaning as in formula I,Y' has the same meaning as Y in formula I (F, CF.sub.3), and additionally can be Cl andZ=Cl, mesylate [=OSO.sub.2 CH.sub.3 ] or tosylate=[OSO.sub.2 C.sub.4 H.sub.6 --CH.sub.3 (p)],with alkali metal fluorides and/or with ammonium fluoride. The reaction products I, among which those wherein at least one of both radicals X and Y is CF.sub.3 are novel compounds, are solvents for highly fluorinated compounds and intermediates in various application fields.

    摘要翻译: 其中X和Y彼此独立地表示F或CF 3的式I(I)的2,3-全氟-1,4-二恶烷是通过式II的羰基化合物(II)制备的, 其中X具有与式I中相同的含义,Y'具有与式I(F,CF 3)中的Y相同的含义,并且另外可以是Cl和Z = Cl,甲磺酸酯[= OSO 2 CH 3]或甲苯磺酸酯= [OSO 2 C 4 H 6 -CH 3 (p)],与碱金属氟化物和/或氟化铵。 反应产物I,其中基团X和Y中的至少一个是CF 3的那些是新化合物,是用于高度氟化的化合物和各种应用领域的中间体的溶剂。

    Plasma accelarator arrangement
    75.
    发明授权
    Plasma accelarator arrangement 有权
    等离子体加速器布置

    公开(公告)号:US06798141B2

    公开(公告)日:2004-09-28

    申请号:US10239274

    申请日:2002-09-20

    IPC分类号: H01J724

    CPC分类号: F03H1/0075 H05H1/54

    摘要: For a plasma accelerator arrangement having a focused electron beam introduced into a plasma chamber, an annular structure of the chamber and a hollow cylindrical form of the electron beam are presented. A beam-guiding magnet system and, if appropriate, an electrode system is preferably formed in a plurality of stages in an adapted toroidal form.

    摘要翻译: 对于具有引入等离子体室中的聚焦电子束的等离子体加速器装置,呈现室的环形结构和电子束的中空圆柱形形式。 光束引导磁体系统,如果合适的话,电极系统优选以适合的环形形式形成多个阶段。

    Process for the preparation of halogenated aliphatic carboxylic acid
fluorides
    77.
    发明授权
    Process for the preparation of halogenated aliphatic carboxylic acid fluorides 失效
    卤代脂肪族羧酸氟化物的制备方法

    公开(公告)号:US4623491A

    公开(公告)日:1986-11-18

    申请号:US745254

    申请日:1985-06-14

    CPC分类号: C07C51/60

    摘要: Halogenated aliphatic carboxylic acid fluorides are prepared by reacting halogenated aliphatic carboxylic acids with trihalogenomethyl aromatic compounds containing, as a predominant total or exclusively, fluorine atoms in the trihalogenomethyl groups, in particular with benzotrifluoride, in the presence of Lewis acids as catalysts. The reaction products are intermediate products having a multiplicity of uses.

    摘要翻译: 卤代脂肪族羧酸氟化物是通过在路易斯酸作为催化剂的存在下,使卤代脂族羧酸与三卤代甲基芳族化合物在三卤代甲基中,特别是与三氟甲苯作为主要的全部或全部氟原子反应来制备。 反应产物是具有多种用途的中间产物。

    Process for the preparation of fluorocarbon polymers containing carboxyl
groups, and certain starting materials required for this, and the
fluoro-sulfato compounds formed as intermediate products in the process
    79.
    发明授权
    Process for the preparation of fluorocarbon polymers containing carboxyl groups, and certain starting materials required for this, and the fluoro-sulfato compounds formed as intermediate products in the process 失效
    制备含有羧基的氟碳聚合物的方法,以及所需的某些原料以及在该方法中形成为中间产物的氟 - 硫酸酯化合物

    公开(公告)号:US4471076A

    公开(公告)日:1984-09-11

    申请号:US467179

    申请日:1983-02-16

    IPC分类号: C08F8/12 B01J39/20 C08F8/34

    CPC分类号: C08F8/12 C08F2800/10

    摘要: Substantially non-crosslinked fluorocarbon polymers containing carboxyl groups are prepared starting from non-crosslinked and in some cases new, fluorocarbon polymers in which the linear macromolecules carry side chains containing the end group --CHFX (X is F or CF.sub.3). The starting polymers are first reacted with peroxodisulfuryl difluoride FSO.sub.2 O--OSO.sub.2 F to give the corresponding fluorosulfato derivatives containing the side chain end groups. ##STR1## In the event that X is F, these derivaties are then converted into the corresponding carboalkoxy derivatives by means of an alcohol, the fluorosulfato group being split off, and these carboalkoxy derivatives are then converted by saponification into the products containing the free carboxyl groups; the fluorosulfato derivatives can also be hydrolyzed with water, if appropriate in the presence of an inert solvent and/or bases, to give, without further treatment, the products containing the free carboxyl groups.The fluorosulfato derivatives in which X is CF.sub.3 in the side chain end groups are first decomposed in the presence of catalytic amounts of alkali metal fluorides and/or aprotic nitrogen bases to give the products containing the side chain end groups ##STR2## and the latter are then hydrolyzed to give the products containing the free carboxyl group.Virtually non-crosslinked fluorocarbon polymers containing carboxyl groups are of industrial importance in the form of cation exchanger membranes in electrolytic cells, particularly in chlor-alkali electrolysis.

    摘要翻译: 含有羧基的基本上非交联的碳氟化合物聚合物是从非交联的,在某些情况下,新的含有端基-CHFX(X是F或CF 3)的侧链的大分子的氟碳聚合物开始制备的。 起始聚合物首先与过氧二硫代氟化二氟FSO 2 O-OSO 2 F反应,得到含有侧链端基的相应的氟代磺酰基衍生物。 (X是F或CF3)。 在X为F的情况下,这些衍生物然后通过醇转化成相应的烷氧基衍生物,将氟代磺酰基分解,然后将这些烷氧羰基衍生物通过皂化转化成含有游离羧基的产物; 如果在惰性溶剂和/或碱存在的情况下,氟磺酸衍生物也可以用水水解,得到含有游离羧基的产物,无需进一步处理。 在侧链端基中X为CF 3的氟代硫脲衍生物首先在催化量的碱金属氟化物和/或非质子氮碱的存在下分解,得到含有侧链端基的产物,并且后者为 然后水解,得到含有游离羧基的产物。 含有羧基的几乎不交联的碳氟化合物聚合物在电解槽中的阳离子交换膜的形式具有工业上的重要性,特别是在氯碱电解中。