Process for the synthesis of perfluoroalkandienes
    52.
    发明公开
    Process for the synthesis of perfluoroalkandienes 失效
    Verfahren zur Herstellung von Perfluoroalkadienen。

    公开(公告)号:EP0270956A1

    公开(公告)日:1988-06-15

    申请号:EP87117598.0

    申请日:1987-11-27

    申请人: AUSIMONT S.r.l.

    IPC分类号: C07C21/19 C07C17/00

    摘要: Perfluorobutadiene and higher alkandienes, with terminal double bonds, are obtained from α,ω-dibromo or α,ω-bromo iodo per­fluoroalkanes by dehalofluorination carried out at limited reaction times by means of an organometallic compound in the presence of an aprotic solvent selected from the class of hyd­rocarbons or a polar aprotic solvent selected from the class of ethers.

    摘要翻译: 全氟丁二烯和具有末端双键的高级链烯基通过脱氟氟化从α-,ω-二溴或α,ω-溴碘碘全氟烷烃获得,在有限的反应时间内,在有选择的非质子溶剂的有机金属化合物存在下, 一类烃或极性非质子溶剂,选自醚类。

    Process for preparing 2-bromo-1',2'-dichloroperfluoro diethyl ether
    53.
    发明公开
    Process for preparing 2-bromo-1',2'-dichloroperfluoro diethyl ether 失效
    Verfahren zur Herstellung von 2-Brom-1',2'-二氯二氟乙醚。

    公开(公告)号:EP0269933A1

    公开(公告)日:1988-06-08

    申请号:EP87116812.6

    申请日:1987-11-13

    申请人: AUSIMONT S.r.l.

    IPC分类号: C07C43/12 C07C41/06

    CPC分类号: C07C43/123

    摘要: The new compound 2-bromo-1ʹ,2ʹ-dichloroperfluoro di­ethyl ether of formula;
    BrCF₂-CF₂-O-CFCl-CF₂Cl
    is obtained from BrCF₂CF₂OF by reaction with olefin CFCl=CFCl, bromohypofluorite being introduced into the reaction mixture in the form of a solution in an inert solvent based on chloro­fluorohydrocarbon.

    摘要翻译: 新型化合物2-溴-1',2'-二氯全氟乙醚; 通过与基于氯氟烃的惰性溶剂中的溶液形式的烯烃CFCl = CFCl,溴二氟氟化物反应,从BrCF 2 CF 2 OF中获得BrCF2-CF2-O-CFCl-CF2Cl。

    Process for the purification of oils
    55.
    发明公开
    Process for the purification of oils 失效
    Verfahren zur Reinigung vonÖlen。

    公开(公告)号:EP0214672A2

    公开(公告)日:1987-03-18

    申请号:EP86112656.3

    申请日:1986-09-12

    申请人: AUSIMONT S.r.l.

    摘要: A process for the purification of oils such as perfluoropolyether oils, silicone oils or oils based on hydrocarbons, which are contaminated with different impurities, in particular, with dispersed solid matter which can be filtered only with difficulty with conventional filters, which process comprises filtration carried out with a filter of the tangential-flow type, the pores of the filter element having a diameter of less than 0.4µm.

    摘要翻译: 用于纯化油的方法,例如全氟聚醚油,硅油或基于烃的油,其被不同杂质污染,特别是分散的固体物质,其可以仅用常规过滤器过滤,该方法包括过滤 用切向流型的过滤器排出,过滤元件的孔具有小于0.4μm的直径。