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    2.
    发明专利
    未知

    公开(公告)号：DD263993A5

    公开(公告)日：1989-01-18

    申请号：DD30638087

    申请日：1987-08-26

    Applicant: HOECHST AG

    Inventor： WEFERLING NORBERT ,  ELSNER GEORG ,  STEPHAN HANS-WERNER ,  FRORATH FRIEDRICH-KARL

    IPC: C07F9/50

    Abstract: Tertiary alkylphosphines of the general formula R3P, in which R stands for identical or different, linear, unsubstituted alkyl groups having 3 to 20 carbon atoms, with the proviso however that one of the alkyl groups may be a secondary butyl group, are made by reacting hydrogen phosphide PH3 with an appropriate alkene or alkenes in stoichiometric excess, if desired, at elevated temperature and under increased pressure in contact with a radical-yielding agent. 2,2'-azobis-(2-methylbutyronitrile) is used as the radical-yielding agent in the absence of whatever alien solvent.

    CONTINUOUS PRODUCTION OF ORGANIC PHOSPHINES
    7.
    发明专利
    CONTINUOUS PRODUCTION OF ORGANIC PHOSPHINES 未知

    公开(公告)号：CA1071653A

    公开(公告)日：1980-02-12

    申请号：CA205070

    申请日：1978-01-17

    Applicant: HOECHST AG

    Inventor： ELSNER GEORG ,  HEYMER GERO ,  STEPHAN HANS-WERNER

    IPC: C07F9/50 ,  C07F9/6568

    Abstract: Organic phosphines are produced by reacting an alkylene, cycloalkylene or aralkylene in the presence of a free radical-yielding catalyst. More specifically, a pressure reactor, which is provided in its interior with mixing elements, kept free from oxygen, and subdivided so as to comprise an upper cooling zone and a lower reaction zone, is continuously supplied from above with(a) a solution of the alkylene, cycloalkylene or aralkylene and the catalyst in an inert solvent, and (b) a stoichiometric excess of hydrogen phosphide, the said (a) and (b) reactants being supplied jointly with but separately from one another; the (a) and (b) reactants are mixed in the upper cooling zone of the reactor at about 0 to 35.degree.C and under a PH3-pressure of about 80 to 300 bars; the resulting mixture, which travels downwardly in the reactor, is reacted in the lower reaction zone at about 90 to 190.degree.C, the reactants being allowed to remain in the reactor for a period of time about 13 to 15 times longer than the half life period of the catalyst; the reaction mixture is removed through the bottom portion of the reactor and subjected to distillation so as to separate the organic phosphines.

    8.
    发明专利
    未知

    公开(公告)号：CH603676A5

    公开(公告)日：1978-08-31

    申请号：CH740174

    申请日：1974-05-30

    Applicant: HOECHST AG

    Inventor： AUEL THEODOR DR ,  HEYMER GERO DR ,  STEPHAN HANS-WERNER

    IPC: C07F9/38 ,  C07F9/40 ,  C07F9/42

    Abstract: Production of 2-phenyl-ethylene phosphonic acid by reacting styrene with phosphorus pentachloride in a molar ratio of about 1 : 2 in liquid phase and hydrolyzing the resulting complex 2-phenyl-ethylene phosphonic acid tetrachloride with water. The reaction is more particularly started with the use as the liquid phase of the equimolar mixture of 2-phenyl-ethylene phosphonic acid dichloride and phosphorus oxychloride obtained as an intermediary product; styrene and phosphorus pentachloride are introduced thereinto with continuous agitation; resulting complex 2-phenyl-ethylene phosphonic acid tetrachloride is partially hydrolyzed by adding a predetermined quantity of water to an equimolar mixture of 2-phenyl-ethylene phosphonic acid dichloride and phosphorus oxychloride; a portion of the resulting clear solution is continuously used as the liquid phase and phosphorus oxychloride is continuously distilled off under reduced pressure from the balance portion of the solution; remaining 2-phenyl-ethylene phosphonic acid dichloride is hydrolyzed by continuous addition of overstoichiometric proportions of water to an aqueous solution of 2-phenyl-ethylene phosphonic acid; the aqueous solution is cooled and crystalline phosphonic acid is precipitated therefrom.

    10.
    发明专利
    未知

    公开(公告)号：DE3629189A1

    公开(公告)日：1988-03-17

    申请号：DE3629189

    申请日：1986-08-28

    Applicant: HOECHST AG

    Inventor： WEFERLING NORBERT ,  ELSNER GEORG ,  STEPHAN HANS-WERNER ,  FRORATH FRIEDRICH-KARL

    IPC: C07F9/50

    Abstract: Tertiary alkylphosphines of the general formula R3P, in which R stands for identical or different, linear, unsubstituted alkyl groups having 3 to 20 carbon atoms, with the proviso however that one of the alkyl groups may be a secondary butyl group, are made by reacting hydrogen phosphide PH3 with an appropriate alkene or alkenes in stoichiometric excess, if desired, at elevated temperature and under increased pressure in contact with a radical-yielding agent. 2,2'-azobis-(2-methylbutyronitrile) is used as the radical-yielding agent in the absence of whatever alien solvent.

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