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    Water-insoluble monoazo dyestuffs and process for preparing them
    3.
    发明授权
    Water-insoluble monoazo dyestuffs and process for preparing them 失效
    水不溶性MONOAZO DYESTUFFS及其制备方法

    公开(公告)号：US3558593A

    公开(公告)日：1971-01-26

    申请号：US3558593D

    申请日：1967-07-18

    Applicant: HOECHST AG

    Inventor： LINDNER HELMUT ,  SOMMER KARL ,  SCHMIDT HEINZ

    IPC: C09B29/08 ,  C07C107/06 ,  C09B29/04

    CPC classification number: C09B29/08

    Abstract: WATER-INSOLUBLE MONOAZO DYESTUFFS OF THE GENERAL FORMULA

    1-((2-Y,4-X-PHENYL)-N=N-),2-(R1-CO-NH-),4-(R3-CO-CH2-

    CH(-R2)-NH-)BENZENE

    WHEREIN X REPRESENTS A NITRO OR NITRILE GROUP, Y REPRESENTS A HYDROGEN A HALOGEN ATOM, OR A NITRO OR NITRILE GROUP, R1 REPRESENTS A LOWER ALKYL OR PHENYL RADICAL, R2 REPRESENTS A METHYL, PHENYL, CHLOROPHENYL, HYDROXYPHENYL OR METHYLENEDIOXYPHENYL RADICAL, AND R3 REPRESENTS A METHYL, PHENYL, HYDROXYPHENYL OR LOWER ALKOXY GROUP, AND A PROCESS FOR PREPARING SAID DYESTUFFS.

    PROCESS FOR PREPARING DERIVATIVES OF BENZENE FLUORINATED IN THE LATERAL CHAINS
    9.
    发明专利
    PROCESS FOR PREPARING DERIVATIVES OF BENZENE FLUORINATED IN THE LATERAL CHAINS 未知

    公开(公告)号：CA1029746A

    公开(公告)日：1978-04-18

    申请号：CA212767

    申请日：1974-10-31

    Applicant: HOECHST AG

    Inventor： LADEMANN RUDOLF ,  LINDNER HELMUT ,  MARTINI THOMAS ,  RAMMELT PETER P

    IPC: C07C17/00 ,  C07C17/20 ,  C07C22/08 ,  C07C51/62 ,  C07C63/70 ,  C07C67/00 ,  G03F7/038 ,  C07C25/14

    Abstract: Preparation of derivatives of benzene containing CF3 groups from the corresponding compounds containing CCl3 groups (e.g. trichloromethyl benzene) is carried out continuously with excellent yield rates by reaction with liquid hydrogen fluoride in an autoclave above 80 DEG C, (which latter exceeds the stoichiometric proportion by at least 25 mole %). The reactants are fed continuously into the autoclave. The reaction mixture preferably becomes pressurized to at least 20 atmospheres and homogeneous after having reached a certain filling level. The reaction mixture is thereafter withdrawn proportionally to its feeding-in rate. The mixture may be conveyed through one or several additional autoclaves with the final withdrawal of the reaction mixture being out from the terminal autoclave of this cascade. The fluorination products are well known starting and inermediate products for the preparation of dyestuffs and pesticidal compositions.

    WATER-INSOLUBLE MONOAZO DYESTUFFS AND PROCESS FOR THEIR PREPARATION
    10.
    发明专利
    WATER-INSOLUBLE MONOAZO DYESTUFFS AND PROCESS FOR THEIR PREPARATION 未知

    公开(公告)号：CA859138A

    公开(公告)日：1970-12-22

    申请号：CA34081

    申请日：1968-11-01

    Applicant: HOECHST AG

    Inventor： LINDNER HELMUT ,  SCHMIDT HEINZ ,  HOYER ERNST

    IPC: C09B62/825

    Abstract: 1,244,006. Monoazo-dyes. FARBWERKE HOECHST A.G. 4 Nov., 1968 [4 Nov., 1967], No. 52209/68. Heading C4P. Novel water-insoluble dyes of formula (wherein X is H, Cl or Br, E 1 is C 1-4 alkyl and R 2 is C 1-4 carboxylic acyl) are prepared by a conventional coupling reaction These dyes may be applied to synthetic fibres such as cellulose triacetate, cellulose - 2¢ - acetate, polyamide, polyurethane, and polyesters such as polyethylene terephthalate. The dyes are said to colour polyester fibres navy blue or violet.

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