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    81.
    发明专利
    未知

    公开(公告)号：BR8302390A

    公开(公告)日：1984-01-10

    申请号：BR8302390

    申请日：1983-05-06

    Applicant: HOECHST AG

    Inventor： HOYER ERNST ,  FASS RUDOLF

    IPC: C09B35/34 ,  C09B62/09 ,  C09B62/44 ,  C09B62/513 ,  D06P1/38 ,  D06P3/10 ,  D06P3/66 ,  C09B35/021 ,  C09B35/037

    Abstract: 1. Water-soluble disazo compounds of the general formula (1) see diagramm : EP0094019,P34,F2 aliphatic radical or an optionally substituted aryl radical, R**6 is an optionally substituted aliphatic radical or an optionally substituted aryl radical or an aromatic heterocyclic radical, R**7 is a hydrogen atom, an optionally substituted aliphatic radical or an optionally substituted cycloaliphatic radical, R**8 is a hydrogen atom, an optionally substituted-aliphatic radical or an optionally substituted aryl radical, or R**7 and R**8 , together with the nitrogen atom, form a 5-, 6- or 7-membered saturated heterocyclic ring which optionally contains one or two further heteroatoms, such as, for example, a nitrogen, oxygen or sulfur atom ; and the moieties D1 , D2 , R**+ , R*, R**1 , R**2 , R**3 , R**4 , X, Y, R**5 , R**6 , R**7 , R**8 , R' and R" can have meanings which are identical to or different from one another.

    WATER-SOLUBLE DISAZO DYESTUFFS
    83.
    发明专利
    WATER-SOLUBLE DISAZO DYESTUFFS 未知

    公开(公告)号：CA1111416A

    公开(公告)日：1981-10-27

    申请号：CA315739

    申请日：1978-11-02

    Applicant: HOECHST AG

    Inventor： HOYER ERNST ,  MEININGER FRITZ ,  FASS RUDOLF

    IPC: C09B62/44 ,  C09B62/513 ,  D06P3/66 ,  C09B31/02 ,  C09B45/24 ,  D06P1/02

    Abstract: The novel water-soluble disazo dyestuff consist of two nonoazo dyestuff moieties each containing as diazo component an amine of the benzene or naphthalene series and as coupling component an amino-naphthol-mono- or disulfonic acid. The two moieties are bonded to each other via a bridge member bound to the amino groups of the coupling components and comprising two triazine radicals each containing a halogen atom, a sulfonic acid group or a thio ether or oxygen ether group or an amino group and the diazo components contain a fiber-reactive radical of the vinyl sulfone series. To produce the dyestuff 2 mols of the diazo component carrying the fiber-reactive radical of the vinyl sulfone series is coupled with 1 mol of a bivalent coupling component consisting of 2 radicals of the aminonaphthol bound to the triazine rings of the bridge member via the amino groups or two monoazo dyestuff each synthesized from the aforesaid diazo component and an aminonaphthol coupling component are reated with the halogen atoms additionally bound to the triazine rings of the bridge member. Alternatively, 2 mols of a monoazo compound sythesized from the said diazo component with the fiber reactive radical and the aminonaphthol coupling component carrying a halogen-triazine radical bound member containing the two triazine radicals. The metal-free dyestuff can be transformed into corresponding heavy metal complex dyestuff, preferably copper, cobalt and chronium complex dyestuffs, by treatment with an agent donating a heavy metal cation. The novel dyestuff are excellently suitable for dyeing and printing fiber material of natural and regenerated cellulose and natural, regenerated and sythetic polyamides. They are distinguished by a high tinctorial strength, a very good uptake from a long liquor, a good color-build up and good printing properties. The dyeings obtained therewith have a high fastnes? to processing and in use.

    PROCESS FOR THE PREPARATION OF SULFURIC ACID SEMI- ESTER COMPOUNDS
    84.
    发明专利
    PROCESS FOR THE PREPARATION OF SULFURIC ACID SEMI- ESTER COMPOUNDS 未知

    公开(公告)号：CA1094568A

    公开(公告)日：1981-01-27

    申请号：CA283928

    申请日：1977-08-02

    Applicant: HOECHST AG

    Inventor： STEUERNAGEL HANS H ,  HOYER ERNST ,  MEININGER FRITZ

    IPC: C07D231/24 ,  C07D231/26 ,  C07D231/46 ,  C09B62/507 ,  C07C141/18

    Abstract: of the disclosure: An improved and novel process had been found for the esterification of aminophenol, amino-benzanilide and pyrazolone compounds containing a .beta.-hydroxyethylsulfonyl group, by means of sulfuric acid or sulfur trioxide which improvement is characterized by that the esterification is performed in a machine which is operating with a kneading action and effect, using per mol .beta.-hydroxyethylsulfonyl compound 1 to 2.5 times the equivalent molar amount of concentrated sulfuric acid, oleum or sulfur trioxide. This novel process has the great advantage that great amounts of sulfuric acid are saved which could charge the waste water, also in form of sodium sulfate formed after the required neutralization. Furthermore, the .beta.-sulfatoethyl-sulfonyl compounds formed as end-products in the esterification process are prepared by this novel process in higher yields, in a higher degree of esterification rate and in a higher purity. They are obtained in form of a powder or plastic mass from the kneading machine, which is well transportable and storable, and can advantageously used in the form of this consistency, without intermediate isolation of the pure .beta.-sulfato compound itself, directly ?r the preparation of azo dyestuffs which are poor of inert salts, possess a high tinctorial strength and purity.

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