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    2.
    发明专利
    未知

    公开(公告)号：DE1668023A1

    公开(公告)日：1971-11-18

    申请号：DE1668023

    申请日：1967-09-19

    Applicant: HOECHST AG

    Inventor： FREYER WALTER DR ,  GSCHEIDMEIER MANFRED DR ,  HOELTERMANN ROLF ,  WIRTZ RUDOLF DR

    IPC: C07C51/377 ,  C07C51/487 ,  C07C

    Abstract: 1,188,745. Purification of monochloroacetic acid. FARBWERKE HOECHST AG. 19 Sept., 1968 [19 Sept., 1967], No. 44609/68. Heading C2C. Monochloroacetic acid is purified by passing the crude acid in the liquid state at 110‹ to 145‹ C. and hydrogen over a stationary catalyst consisting of at least one noble metal of Group VIII of the Periodic Table supported on an acidresistant carrier. Specified catalysts are palladium-group metals and their alloys and specified carriers are alumina, carbon, silicic acid, silicon carbide and boron carbide.

    Process for the preparation of dichloroacetylchloride.
    3.
    发明专利
    Process for the preparation of dichloroacetylchloride. 未知

    公开(公告)号：GR3024856T3

    公开(公告)日：1998-01-30

    申请号：GR970402500

    申请日：1997-09-24

    Applicant: HOECHST AG

    Inventor： KAMPMANN DETLEF DR ,  FREYER WALTER DR ,  BAYER KARL

    IPC: B01J19/12 ,  B01J19/24 ,  B01J31/02 ,  C07C51/58 ,  C07C53/48

    Abstract: The invention relates to a process for the preparation of dichloroacetyl chloride by oxidation of trichloroethylene under pressure and at elevated temperature in the presence of a specific secondary aliphatic or cycloaliphatic amine of the formula HNR R , in which R and R are identical or different and are an alkyl radical having 1 to 10 C atoms, at least one of the radicals R and R having a tertiary structure, or R and R , together with the nitrogen atom, form a 5- to 10-membered ring, at least one of the C atoms adjacent to the nitrogen being a tertiary C atom. Good yields of the acid chloride and low contents of trichloroethylene oxide are obtained in one process step.

    4.
    发明专利
    未知

    公开(公告)号：ES2108325T3

    公开(公告)日：1997-12-16

    申请号：ES94106474

    申请日：1994-04-26

    Applicant: HOECHST AG

    Inventor： KAMPMANN DETLEF DR ,  FREYER WALTER DR ,  BAYER KARL

    IPC: B01J19/12 ,  B01J19/24 ,  B01J31/02 ,  C07C51/58 ,  C07C53/48

    Abstract: The invention relates to a process for the preparation of dichloroacetyl chloride by oxidation of trichloroethylene under pressure and at elevated temperature in the presence of a specific secondary aliphatic or cycloaliphatic amine of the formula HNR R , in which R and R are identical or different and are an alkyl radical having 1 to 10 C atoms, at least one of the radicals R and R having a tertiary structure, or R and R , together with the nitrogen atom, form a 5- to 10-membered ring, at least one of the C atoms adjacent to the nitrogen being a tertiary C atom. Good yields of the acid chloride and low contents of trichloroethylene oxide are obtained in one process step.

    5.
    发明专利
    未知

    公开(公告)号：DK0623578T3

    公开(公告)日：1998-03-09

    申请号：DK94106474

    申请日：1994-04-26

    Applicant: HOECHST AG

    Inventor： KAMPMANN DETLEF DR ,  FREYER WALTER DR ,  BAYER KARL

    IPC: B01J31/02 ,  B01J19/12 ,  B01J19/24 ,  C07C51/58 ,  C07C53/48

    Abstract: The invention relates to a process for the preparation of dichloroacetyl chloride by oxidation of trichloroethylene under pressure and at elevated temperature in the presence of a specific secondary aliphatic or cycloaliphatic amine of the formula HNR R , in which R and R are identical or different and are an alkyl radical having 1 to 10 C atoms, at least one of the radicals R and R having a tertiary structure, or R and R , together with the nitrogen atom, form a 5- to 10-membered ring, at least one of the C atoms adjacent to the nitrogen being a tertiary C atom. Good yields of the acid chloride and low contents of trichloroethylene oxide are obtained in one process step.

    PROCESS FOR PREPARING HIGH CHLORINATED PARAFFINS
    7.
    发明专利
    PROCESS FOR PREPARING HIGH CHLORINATED PARAFFINS 未知

    公开(公告)号：CZ274794A3

    公开(公告)日：1995-07-12

    申请号：CZ274794

    申请日：1994-11-08

    Applicant: HOECHST AG

    Inventor： BEWART DIETMAR DIPL-ING ,  FREYER WALTER DR

    IPC: C07C17/10 ,  C07C19/01

    Abstract: The chlorination of paraffins is carried out in the presence of water and in the absence of a solvent. In this way, it is possible to prepare highly chlorinated paraffins in a simple manner. The presence of hydrochloric acid causes no losses of quality even at high temperatures. The separation of the chloroparaffin from the hydrochloric acid is very good. An emulsion layer preventing the transport of the chloroparaffin into downstream equipment does not occur.

    9.
    发明专利
    未知

    公开(公告)号：DE4338195A1

    公开(公告)日：1995-05-11

    申请号：DE4338195

    申请日：1993-11-09

    Applicant: HOECHST AG

    Inventor： BEWART DIETMAR DIPL ING ,  FREYER WALTER DR

    IPC: C07C17/10 ,  C07C19/01

    Abstract: The chlorination of paraffins is carried out in the presence of water and in the absence of a solvent. In this way, it is possible to prepare highly chlorinated paraffins in a simple manner. The presence of hydrochloric acid causes no losses of quality even at high temperatures. The separation of the chloroparaffin from the hydrochloric acid is very good. An emulsion layer preventing the transport of the chloroparaffin into downstream equipment does not occur.

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