Water-soluble tetraazo dyestuffs containing a pyrazolone and disulfonaphthal group
    1.
    发明授权
    Water-soluble tetraazo dyestuffs containing a pyrazolone and disulfonaphthal group 失效
    含有吡唑啉酮和脱乙酰基团的水溶性四氢番茄红素

    公开(公告)号:US3634390A

    公开(公告)日:1972-01-11

    申请号:US3634390D

    申请日:1969-04-08

    Applicant: HOECHST AG

    CPC classification number: C09B33/28

    Abstract: WATER-SOLUBLE POLYAZO-DYESTUFFS OF THE FORMULA

    1-((3,6-DI(HO3S-),7-(Y-N=N-),8-(HO-)NAPHTHYL)-N=N-),

    2-(HO-),4,6-DI(X-),5-(((3-R1,4-(R-N=N-),5-(HO-)

    PYRAZOL-1-YL),R2-PHENYL)-N=N-)BENZENE

    SAID DYESTUFFS BEING EASILY SOLUBLE IN WATER AND BEING SUITABLE FOR THE DYEING OF LEATHER AND FUR SUEDES, THE DYEINGS OBTAINED ON SIAD MATERIALS MOSTLY SHOWING A YELLOWISHBROWN SHADE AND HAVING A GOOD RESISTANCE TO ACIDS, A GOOD LEVELLING AND PENETRATING POWER, AND POSSESSING GOOD PROPERTIES OF FASTNESS TO WATER, WASHING, PERSPIRATION, SOLVENTS AND TO LIGHT.

    Water-insoluble monoazo dyestuffs and process for preparing them
    2.
    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

    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.

    5.
    发明专利
    未知

    公开(公告)号:BR8204954A

    公开(公告)日:1983-08-02

    申请号:BR8204954

    申请日:1982-08-24

    Applicant: HOECHST AG

    Abstract: Water soluble trisazo dyestuffs of the formula in which A is 1-amino-8-naphthol-3,6-disulfonic acid or 1-amino-8-naphthol-4,6-disulfonic acid, or a mixture of these two compounds, and B is 1-(3'- or 4'-aminophenyl)-3-methyl-5-pyrazolone, a process for their manufacture by diazotizing component A and coupling it with 3,3'-dihydroxy-diphenylamine to give a monoazo dyestuff, reacting this dyestuff with diazotized component B to give a disazo dyestuff, and converting this dyestuff to the trisazo dyestuff by uniting it with diazotized 4-nitro-4'-amino-diphenylamine-2-sulfonic acid, or by operating as described while, however, changing the sequence of reaction of component B and 4-nitro-4'-amino-diphenylamine-2-sulfonic acid, and use of these dyestuffs for the dyeing of leather and fur.

    6.
    发明专利
    未知

    公开(公告)号:FI822924A0

    公开(公告)日:1982-08-23

    申请号:FI822924

    申请日:1982-08-23

    Applicant: HOECHST AG

    Abstract: Water soluble trisazo dyestuffs of the formula in which A is 1-amino-8-naphthol-3,6-disulfonic acid or 1-amino-8-naphthol-4,6-disulfonic acid, or a mixture of these two compounds, and B is 1-(3'- or 4'-aminophenyl)-3-methyl-5-pyrazolone, a process for their manufacture by diazotizing component A and coupling it with 3,3'-dihydroxy-diphenylamine to give a monoazo dyestuff, reacting this dyestuff with diazotized component B to give a disazo dyestuff, and converting this dyestuff to the trisazo dyestuff by uniting it with diazotized 4-nitro-4'-amino-diphenylamine-2-sulfonic acid, or by operating as described while, however, changing the sequence of reaction of component B and 4-nitro-4'-amino-diphenylamine-2-sulfonic acid, and use of these dyestuffs for the dyeing of leather and fur.

    PROCESS FOR PRODUCING NEW, SOLUABLE ON WATER TRISAZOTINCTURES

    公开(公告)号:HU187784B

    公开(公告)日:1986-02-28

    申请号:HU272382

    申请日:1982-08-24

    Applicant: HOECHST AG

    Abstract: Water soluble trisazo dyestuffs of the formula in which A is 1-amino-8-naphthol-3,6-disulfonic acid or 1-amino-8-naphthol-4,6-disulfonic acid, or a mixture of these two compounds, and B is 1-(3'- or 4'-aminophenyl)-3-methyl-5-pyrazolone, a process for their manufacture by diazotizing component A and coupling it with 3,3'-dihydroxy-diphenylamine to give a monoazo dyestuff, reacting this dyestuff with diazotized component B to give a disazo dyestuff, and converting this dyestuff to the trisazo dyestuff by uniting it with diazotized 4-nitro-4'-amino-diphenylamine-2-sulfonic acid, or by operating as described while, however, changing the sequence of reaction of component B and 4-nitro-4'-amino-diphenylamine-2-sulfonic acid, and use of these dyestuffs for the dyeing of leather and fur.

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