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    DISAZO PIGMENT
    44.
    发明专利
    DISAZO PIGMENT 未知

    公开(公告)号：AU6459574A

    公开(公告)日：1975-07-17

    申请号：AU6459574

    申请日：1974-01-17

    Applicant: HOECHST AG

    Inventor： RIBKA JOACHIM ,  RIEPER WOLFGANG ,  HUNGER KLAUS

    IPC: C09D7/00 ,  C09B35/03 ,  C09B35/08 ,  C09B35/18 ,  C09B67/10 ,  C09D7/12 ,  C09B35/10 ,  C08J1/08

    Abstract: A highly covering disazo pigment having the chemical constitution WHICH IS CHARACTERIZED BY A SPECIFIC SURFACE OF 12 - 30, PREFERABLY 15 TO 25, M2/G, A MAXIMUM OF THE GRAIN SIZE DISTRIBUTION OF BETWEEN 250 AND 500 NM AND A PROPORTION OF THESE GRAIN SIZES IN THE TOTAL DISTRIBUTION OF 35 - 65 PERCENT, PREFERABLY 45 - 60 PERCENT. This new pigment form is obtained by heating the pigment obtained after coupling with a solvent which is immiscible with water or miscible with water to a limited degree only to temperatures above 100 DEG C.

    WATER-SOLUBLE MONOAZO DYESTUFFS AND PROCESS FOR THEIR PREPARATION
    45.
    发明专利
    WATER-SOLUBLE MONOAZO DYESTUFFS AND PROCESS FOR THEIR PREPARATION 未知

    公开(公告)号：CA955934A

    公开(公告)日：1974-10-08

    申请号：CA150160

    申请日：1972-08-25

    Applicant: HOECHST AG

    Inventor： MEININGER FRITZ ,  SPRINGER HARTMUT ,  HUNGER KLAUS

    IPC: C09B62/51

    Abstract: 1376399 Reactive water-soluble mono-azo dyestuffs FARBWERKE HOECHST AG 29 Aug 1972 [26 Aug 1971] 39989/72 Heading C4P Novel dyestuffs of the formula wherein A is a phenyl, naphthyl, pyrazolyl or acetoacetylarylamide radical substituted by at least one water-solubilizing group and optionally by further substituents and X is a vinyl group or a group of the formula -CH 2 CH 2 Z in which Z is OH or an inorganic or organic radical that can be split off by an alkaline agent, or salts thereof, are prepared by diazotizing an appropriate 2-amino-8-(SO 2 X)-naphthalene and coupling with a compound AH in an aqueous medium. In the products X groups can be interconverted, e.g. -CH 2 CH 2 OH may be esterified to -CH 2 CH 2 OSO 3 H and this may be converted to -CH 2 CH 2 N(C 2 H 5 ) 2 , or to -CH=CH 2 which may in turn be converted to The novel dyestuffs may be used for the dyeing and printing of wool, silk, leather, synthetic polyamide fibres and native or regenerated cellulose fibres.

    PROCESS FOR PREPARING WATER-INSOLUBLE AZO DYES ON THE FIBER
    48.
    发明专利
    PROCESS FOR PREPARING WATER-INSOLUBLE AZO DYES ON THE FIBER 未知

    公开(公告)号：IN164896B

    公开(公告)日：1989-07-01

    申请号：IN239CA1986

    申请日：1986-03-24

    Applicant: HOECHST AG

    Inventor： HERTEL HASSO ,  HUNGER KLAUS ,  FROELICH HEINRICH

    IPC: D06P1/12 ,  C09B35/14 ,  D06P3/68 ,  C09B27/00 ,  D06P1/00

    Abstract: Using the method of azoic dyeing, fast blue dyeings are obtained when the bis-diazotable diazo component used is a compound of the general formula (1) (1) in which R is a straight-chain or branched alkyl group of 3 to 5 carbon atoms or a (C1-C3)-alkoxy-(C2-C4)-alkyl group having straight-chain and/or branched alkyl groups of in total 3 to 5 carbon atoms, and the coupling component used is a compound conforming to the general formula (2) (2) in which Z stands for a hydrogen atom or a halogen atom or an alkoxy group of 1 to 4 carbon atoms and Aryl denotes a phenyl radical or a 1-naphthyl radical which can be substituted by 1, 2 or 3 substituents from the group consisting of halogen, nitro, alkyl of 1 to 4 carbon atoms and alkoxy of 1 to 4 carbon atoms, and the coupling reaction and dye formation on the fiber are carried out at a pH value between 4 and 10.

    50.
    发明专利
    未知

    公开(公告)号：BR8601375A

    公开(公告)日：1986-12-02

    申请号：BR8601375

    申请日：1986-03-26

    Applicant: HOECHST AG

    Inventor： HERTEL HASSO ,  HUNGER KLAUS ,  FROLICH HEINRICH

    IPC: C09B35/02 ,  C09B35/08 ,  C09B35/025 ,  D06P3/60

    Abstract: bis-Diazo compounds of the formula (1) in which R is a straight-chain or branched alkyl or alkoxyalkyl radical of 3 to 5 carbon atoms and Y is an anti-diazotate radical -N=N-O ME , in which ME represents a potassium atom or sodium atom, or is the radical -N=N-Z, in which Z represents the radical of a water-soluble aliphatic or aromatic amine containing a sulpho and/or carboxyl group are prepared by bisdiazotising a diamine of the formula (2) in which R has the abovementioned meaning in an aqueous, strong, non-oxidising inorganic or organic acid with an alkali metal nitrite at temperatures of about -10 DEG C to about +40 DEG C and converting the bisdiazonium compound formed either into the anti-bisdiazotate of the formula (1) mentioned where Y is -N=N-O ME or into a bisdiazoamino compound of the formula (1) where Y is -N=N-Z in a manner known per se, followed by precipitation.

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