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    32.
    发明专利
    未知

    公开(公告)号：DE3933559A1

    公开(公告)日：1991-04-11

    申请号：DE3933559

    申请日：1989-10-07

    Applicant: HOECHST AG

    Inventor： FREYER WALTER DR ,  MILTENBERGER KARLHEINZ DR ,  SCHMIDT MANFRED

    IPC: C07C51/58 ,  C07C53/48

    Abstract: In the conversion of trichloroethene and tetrachloroethene into dichloroacetyl chloride (DAC) or trichloroacetyl chloride (TAC) by means of oxygen, the reaction mixture is passed several times as a thin film through the reaction zone. The reaction time for achieving a certain conversion is in this way reduced. In the preparation of DAC, a constant content of acid chloride is established in the reaction mixture by removing some of the mixture and working this up by distillation, while the circulating reaction mixture is simultaneously topped up with fresh trichloroethene. In this way, side reactions are suppressed and the amount of by-products is reduced.

    33.
    发明专利
    未知

    公开(公告)号：NO891015D0

    公开(公告)日：1989-03-09

    申请号：NO891015

    申请日：1989-03-09

    Applicant: HOECHST AG

    Inventor： MILLER DENNIS ,  SCHMIDT MANFRED ,  HOLST ARNO ,  HALASZ SIGMAR-PETER VON

    IPC: C09K8/584 ,  C09K23/02 ,  C09K23/42 ,  E21B43/22 ,  B01F17/00 ,  C09K7/00 ,  E21B43/00

    Abstract: Surfactant mixtures made from 5 to 80% by weight of an ether sulfonate, 5 to 80% by weight of an alkyl or alkylphenol polyglycol ether and 10 to 80% by weight of an alkanesulfonate, petroleumsulfonate or alkylbenzenesulfonate. This combination of surfactants produces stable, aqueous solutions or dispersions which are highly suitable for surfactant flooding in tertiary oil recovery since these aqueous surfactant solutions or dispersions form microemulsions with the oil even at high salinities.

    34.
    发明专利
    未知

    公开(公告)号：BR8705716A

    公开(公告)日：1988-05-31

    申请号：BR8705716

    申请日：1987-10-27

    Applicant: HOECHST AG

    Inventor： SCHMIDT MANFRED ,  RUPP WALTER ,  SCHNEIDER GERHART ,  KOHN EVA M

    IPC: C07C309/04 ,  C07C309/09 ,  C09K8/584 ,  E21B43/22 ,  C07C143/34

    Abstract: Styrylaryloxy ether sulfonates of the formula in which either R1 denotes styryl and simultaneously R2 and R3 are identical or different and denote hydrogen or styryl, or R1 and R2 are nonidentical and each denote methyl or styryl and simultaneously R3 denotes hydrogen or styryl, x denotes a number from 2 to 20, and M denotes an ammonium or alkali metal cation. These compounds are suitable as surfactant auxiliaries in oil recovery.

    EMULSIFIERS
    35.
    发明专利
    EMULSIFIERS 未知

    公开(公告)号：AU4108672A

    公开(公告)日：1973-10-18

    申请号：AU4108672

    申请日：1972-04-13

    Applicant: HOECHST AG

    Inventor： DIERY HELMUT ,  KLINNER WOLFGANG ,  POTSCHKA VOLKER ,  SCHMIDT MANFRED

    IPC: A01N25/04 ,  A01N25/30 ,  A01N53/02 ,  A01P13/00 ,  C09K23/00 ,  C09K23/08 ,  A01N17/10 ,  C11D1/14 ,  C11D1/72 ,  C11D1/83

    Abstract: 1328933 Chlorinated paraffin sulphonic acids and salts FARBWERKE HOECHST AG 11 April 1972 [16 April 1971] 16602/72 Heading C2C [Also in Divisions A5 and C5] The calcium salt of chlorinated n-paraffin sulphonates is prepared by passing chlorine gas into a 60% aqueous paste of a sodium salt of a straight chain paraffin sulphonic acid having 13 to 18 C atoms in the alkyl chain, exposed to ultra-violet light produced by a mercury high vapor pressure immersion burner. 1À5 gram atoms of chlorine per mol of paraffin sulphonate is taken up during the reaction. The free chlorinated paraffin sulphonic acid is isolated and neutralized with calcium hydroxide. The corresponding magnesium and barium salts are obtained by neutralizing the free acid with magnesium and barium hydroxide respectively. The zinc salt is produced from the free acid by treatment with zinc carbonate and the aluminium salt by treatment with aluminium triisopropylate.

    PROCESS FOR CONTINUOUS PRODUCING DICHLORO- OR TRICHLORO-ACETYL-CHLORIDE
    37.
    发明专利
    PROCESS FOR CONTINUOUS PRODUCING DICHLORO- OR TRICHLORO-ACETYL-CHLORIDE 未知

    公开(公告)号：HUT54965A

    公开(公告)日：1991-04-29

    申请号：HU634690

    申请日：1990-10-05

    Applicant: HOECHST AG

    Inventor： FREYER WALTER ,  MILTENBERGER KARLHEINZ ,  SCHMIDT MANFRED

    IPC: C07C51/58 ,  C07C53/48

    Abstract: In the conversion of trichloroethene and tetrachloroethene into dichloroacetyl chloride (DAC) or trichloroacetyl chloride (TAC) by means of oxygen, the reaction mixture is passed several times as a thin film through the reaction zone. The reaction time for achieving a certain conversion is in this way reduced. In the preparation of DAC, a constant content of acid chloride is established in the reaction mixture by removing some of the mixture and working this up by distillation, while the circulating reaction mixture is simultaneously topped up with fresh trichloroethene. In this way, side reactions are suppressed and the amount of by-products is reduced.

    38.
    发明专利
    未知

    公开(公告)号：DE3767119D1

    公开(公告)日：1991-02-07

    申请号：DE3767119

    申请日：1987-10-17

    Applicant: HOECHST AG

    Inventor： SCHMIDT MANFRED ,  RUPP WALTER ,  SCHNEIDER GERHART ,  KOHN EVA M

    IPC: C07C309/04 ,  C07C309/09 ,  C09K8/584 ,  E21B43/22

    Abstract: Styrylaryloxy ether sulfonates of the formula in which either R1 denotes styryl and simultaneously R2 and R3 are identical or different and denote hydrogen or styryl, or R1 and R2 are nonidentical and each denote methyl or styryl and simultaneously R3 denotes hydrogen or styryl, x denotes a number from 2 to 20, and M denotes an ammonium or alkali metal cation. These compounds are suitable as surfactant auxiliaries in oil recovery.

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