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    PROCESS FOR PREPARING WATER-SOLUBLE REACTIVE DYESTUFFS
    3.
    发明专利
    PROCESS FOR PREPARING WATER-SOLUBLE REACTIVE DYESTUFFS 未知

    公开(公告)号：IN139721B

    公开(公告)日：1976-07-24

    申请号：IN65CA1973

    申请日：1973-01-09

    Applicant: HOECHST AG

    Inventor： BAUER A ,  HOYER E

    IPC: C09B62/006 ,  C09B62/008 ,  C09B29/00

    Abstract: 1406913 Water-soluble reactive monoazo dyes HOECHST AG 11 Jan 1973 [12 Jan 1972] 1559/73 Heading C4P Water-soluble monoazo dyes have the Formula (I) in which, within the dashed line, the structure may be in the enolized form or the hydrazone form, and where A, A 1 , B and B 1 each represent a benzene or naphthalene radical which may carry further substituents, W is -CN or -CONH 2 , and Z 1 and Z 2 each represents a direct bond or a bivalent bridge member, or a C 1 -C 4 lower alkylene group, and which may be identical or different, X and X 1 each represents a reactive group which may be identical or different, m and m 1 each represents 0, 1, 2 or 3, the sum of m + m 1 being at least 1, n and n 1 each represents 0, 1 or 2 and n + n 1 is at least 1 and at most 3, v and v 1 each represents 0 or 1, R represents a hydrogen atom or a lower alkyl or a lower alkyl group substituted by -OH, -COOH, -COO (lower alkyl) or -CN, the lower alkyl group containing 1-4 carbon atoms, and both R's may be identical or different, and n 2 and n 3 each represents the number 1 or 2. The compounds are made by diazotization and coupling. The dyes may be used to produce greenish yellow shades by dyeing or printing materials containing hydroxyl groups or nitrogen, e.g. on wool, silk, leather, polyamide, or polyurethane fibres or on natural or regenerated cellulose.

    7.
    发明专利
    未知

    公开(公告)号：BR7900798A

    公开(公告)日：1979-09-04

    申请号：BR7900798

    申请日：1979-02-09

    Applicant: HOECHST AG

    Inventor： BAUER A ,  MUELLER G ,  LEISTNER G ,  SELL G

    IPC: C02F3/12 ,  C02F3/20 ,  C02F3/22 ,  C02F3/26 ,  C02C1/06

    Abstract: A device for the biological purification of waste water and for the degasification and clarification of a sludge-water mixture resulting from the biological purification includes a reactor container defining a chamber, means for introducing air, waste water and activated sludge into the chamber and means for discharging overflowing sludge-water mixture from the reactor container (activation chamber). A guide element is disposed within the chamber for maintaining a loop-shaped flow therein. A section of the wall of the reactor container is surrounded by a jacket, the lower end of which is joined to the periphery of the wall of the reactor container intermediate its ends and the upper end of which is substantially concentric to and spaced outwardly from the container; the lower portion of the jacket may have an inverted frusto-conical configuration; the jacket defines with the reactor container an annular space around the container, a portion of said space being adapted for settling of sludge out of the sludge-water mixture overflow. An inlet element and a discharge trough are arranged about the reactor container. The overflow from the reactor container discharges into the inlet element and passes via outlet means to the settling portion of said annular space, wherein sludge separates from effluent of the sludge-water mixture. Effluent from the mixture passes into the discharge trough for removal via another outlet means from the apparatus.

    8.
    发明专利
    未知

    公开(公告)号：DK54079A

    公开(公告)日：1979-08-12

    申请号：DK54079

    申请日：1979-02-09

    Applicant: HOECHST AG

    Inventor： LEISTNER G ,  MUELLER G ,  SELL G ,  BAUER A

    IPC: B01F3/04 ,  C02F3/12 ,  C02F3/20 ,  C02F3/22 ,  C02C

    Abstract: In a process for the biological purification of waste water by mixing a sludge-water mixture and air in an activation chamber charged continuously with waste water, activated sludge and air and from which an equivalent quantity of sludge-water mixture is discharged, the sludge-water mixture is guided along with the air in the activation chamber so as to define at least one loop shape motion. In a further embodiment of the process that part of the sludge-water mixture that does not continue its loop shape course is submitted to a biological after-reaction, preferably occurring in the activation chamber, while avoiding backmixing with the mixture in loop shape motion.

    9.
    发明专利
    未知

    公开(公告)号：DK53979A

    公开(公告)日：1979-08-12

    申请号：DK53979

    申请日：1979-02-09

    Applicant: HOECHST AG

    Inventor： BAUER A ,  LEISTNER G ,  MUELLER G ,  SELL G

    IPC: C02F3/12 ,  C02F3/20 ,  C02F3/22 ,  C02F3/26 ,  C02C

    Abstract: A device for the biological purification of waste water and for the degasification and clarification of a sludge-water mixture resulting from the biological purification includes a reactor container defining a chamber, means for introducing air, waste water and activated sludge into the chamber and means for discharging overflowing sludge-water mixture from the reactor container (activation chamber). A guide element is disposed within the chamber for maintaining a loop-shaped flow therein. A section of the wall of the reactor container is surrounded by a jacket, the lower end of which is joined to the periphery of the wall of the reactor container intermediate its ends and the upper end of which is substantially concentric to and spaced outwardly from the container; the lower portion of the jacket may have an inverted frusto-conical configuration; the jacket defines with the reactor container an annular space around the container, a portion of said space being adapted for settling of sludge out of the sludge-water mixture overflow. An inlet element and a discharge trough are arranged about the reactor container. The overflow from the reactor container discharges into the inlet element and passes via outlet means to the settling portion of said annular space, wherein sludge separates from effluent of the sludge-water mixture. Effluent from the mixture passes into the discharge trough for removal via another outlet means from the apparatus.

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