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    2.
    发明专利
    未知

    公开(公告)号：DD207914A5

    公开(公告)日：1984-03-21

    申请号：DD24901183

    申请日：1983-03-21

    Applicant: HOECHST AG

    Inventor： PIEPER WERNER ,  KRAUSE WERNER

    IPC: C07F9/38 ,  C07F9/40

    Abstract: The disclosure relates to a process for making derivatives of vinylpyrophosphonic acid, wherein a ketone is reacted with tetraphosphorus hexoxide (P4O6) in the presence of a catalytically active proportion of a proton-yielding substance at elevated temperature. Vinylphosphonic acid derivatives are obtained by hydrolyzing the vinylpyrophosphonic acid derivatives with an equivalent proportion of water. More particularly, the ketone used is a compound of the following general formula in which either R stands exclusively for a halogen and R' either stands for a halogen or hydrogen, a halogen-substituted or unsubstituted alkyl, aryl, alkaryl or aralkyl group having from 1 to 18 carbon atoms, and R'' stands for an alkyl, aryl, alkaryl, aralkyl or alkenyl group having from 1 to 18 carbon atoms, or R'' stands exclusively for an alkenyl group having from 2 to 18 carbon atoms and R and R' being identical or different each stand for hydrogen or a halogen or a halogen-substituted or unsubstituted alkyl, aryl, alkaryl or aralkyl group having from 1 to 18 carbon atoms.

    4.
    发明专利
    未知

    公开(公告)号：DK166086B

    公开(公告)日：1993-03-08

    申请号：DK126281

    申请日：1981-03-20

    Applicant: HOECHST AG

    Inventor： KRAUSE WERNER ,  GROSSE JUERGEN ,  KLOSE WERNER

    IPC: C07F9/165 ,  B01J31/00 ,  B01J31/02 ,  C07B61/00 ,  C07F9/17 ,  C07F9/18

    Abstract: The invention relates to a process wherein an alcohol and/or phenol is reacted with phosphorus pentasulfide in the presence of a catalyst which is selected from (a) phosphonium salts of the general formula: I (b) ammonium salts of the general formula: II (c) phosphine oxides of the general formula: III (d) phosphine sulfides of the general formula: IV (e) phosphinic acid derivatives of the general formula: V In formulae I through V, the substituents R1, R2, R3 and R4 each stand for identical or different alkyl-, aryl-, alkaryl- or aralkyl- groups having from 1 to 22 carbon atoms. A stands for an inorganic or organic acid, and X and Y, respectively, stand for both oxygen and sulfur, and M stands for a monovalent metal or oxygen.

    7.
    发明专利
    未知

    公开(公告)号：BR8204101A

    公开(公告)日：1983-07-05

    申请号：BR8204101

    申请日：1982-07-14

    Applicant: HOECHST AG

    Inventor： SCHIMMEL GUNTHER ,  KRAUSE WERNER ,  GRADL REINHARD

    IPC: C02F1/26 ,  C01B25/238 ,  C02F1/62 ,  C22B3/00 ,  C22B3/38 ,  B01D11/04 ,  C01B25/46

    Abstract: The disclosure relates to a process for liquid/liquid-extraction of heavy metal ions from acid aqueous solutions with the aid of water-insoluble dithiophosphoric acid diesters as extracting agents. More particularly, use is made of phosphoric acid solutions with a P2O5-content of from 3 to 80 weight %, the solutions being free from emulsion-forming organic contaminants or having previously been freed therefrom in known manner. The resulting aqueous phase is separated from the phase containing the dithiophosphoric acid diester.

    PROCESS FOR MAKING ALKYL OR ARYLTHIOPHOSPHONIC ACID DICHLORIDES
    9.
    发明专利
    PROCESS FOR MAKING ALKYL OR ARYLTHIOPHOSPHONIC ACID DICHLORIDES 未知

    公开(公告)号：CA1181091A

    公开(公告)日：1985-01-15

    申请号：CA407534

    申请日：1982-07-19

    Applicant: HOECHST AG

    Inventor： KRAUSE WERNER

    IPC: C07F9/42 ,  C07F9/34

    Abstract: PROCESS FOR MAKING ALKYL OR ARYLTHIOPHOSPHONIC ACID DICHLORIDES The disclosure relates to a process for making alkyl or arylthiophosphonic acid dichlorides by reacting alkyl or aryldichlorophosphanes with sulfur at a temperature above the melting point of sulfur and in the presence of a catalyst. More particularly, the reaction is effected at a temperature between the melting point of sulfur and the boiling point of the resulting alkyl or arylthiophosphonic acid dichloride and in the presence of a catalyst of the following general formula I or II (II) in which R1, R2, R3 and R4 stand for identical or different alkyl, aryl, alkaryl or aralkyl groups having from 1 to 22 carbon atoms and A stands for the anionic group of an organic or inorganic acid.

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