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    37.
    发明专利
    未知

    公开(公告)号：BR7300108D0

    公开(公告)日：1973-08-30

    申请号：BR10873

    申请日：1973-01-05

    Applicant: HOECHST AG

    Inventor： RIEPER W ,  RIBKA J

    IPC: C09B35/039 ,  C09B35/18 ,  C09B33/06

    Abstract: Disazo pigment of the general formula RHN-----N = N PARALLEL ¦ N¦ ANGLE N PARALLEL O ¦ R1 (1) N = N-----NHR ¦ PARALLEL ¦N PARALLEL ANGLE ON ¦ R1 wherein X and Y represent hydrogen or halogen atoms, preferably chlorine atoms, alkyl groups, preferably methyl groups, alkoxy groups, preferably methoxy and ethoxy groups, or nitro groups, R represents benzoyl, hexahydrobenzoyl, alkanoyl, alkylsulfonyl, phenylacetyl, arylsulfonyl, aralkylsulfonyl, alkylcarbamoyl, arylcarbamoyl, alkylthiocarbamoyl or arylthiocarbamoyl groups and R1 represents a hydrogen atom or a phenyl ring which may be substituted by 1 - 3 alkyl, alkoxy, halogen or nitro groups and a process for preparing them which comprises bisdiazotizing diamines of the general formula AND COUPLING THEM WITH 2 MOLES OF A PYRAZOLONE DERIVATIVE OF THE FORMULA CH2--C-NH-R ¦ PARALLEL CN PARALLEL ANGLE ON ¦ R1 The new pigment pigments are suitable for the coloring of printing pastes, color lakes and dispersion paints, for the dyeing of plastics and natural resins or artificial resins, such as polymerization or condensation resins. They are furthermore suitable for the pigment printing on a substrate, especially on textile fibers. They may be used for the dyeing of artificial silk made from viscose or cellulose ethers or esters, polyamides, polyurethanes, polyglycol terephthalates or polyacrylonitrile in the spinning mass or for the dyeing of paper.

    40.
    发明专利
    未知

    公开(公告)号：DK142917C

    公开(公告)日：1981-09-28

    申请号：DK30074

    申请日：1974-01-18

    Applicant: HOECHST AG

    Inventor： RIBKA J ,  RIEPER W ,  SCHWERIN S

    IPC: C09D7/00 ,  C09B33/153 ,  C09B35/08 ,  C09B67/10 ,  C09D7/12 ,  C09B67/36

    Abstract: A form of the disazo pigment C.I. 20040 having the formula 30% of +TR IS SHOWN HAVING IMPROVED COVERING POWER, IMPROVED FLUIDITY IN LACQUER SYSTEMS AND HIGH LUSTER, WHICH IS CHARACTERIZED BY A SPECIFIC SURFACE OF 10 - 20, PREFERABLY 12 - 17 M2/G AND A MAXIMUM IN GRAIN DIAMETER DISTRIBUTION BETWEEN 500 AND 1000 NM, AT LEAST 30 % OF ALL GRAINS HAVING A DIAMETER OF FROM 500 TO 1000 NM AND LESS THAN 25% OF ALL GRAINS HAVING A DIAMETER OR MORE THAN 1000 NM. This new pigment is obtained by isolating the pigment, after coupling, by stirring it out with alkali and, after having filtered it off and washed until neutrality, heating it to temperatures above 100 DEG C with an organic solvent which is immiscible with water or miscible with water to a limited degree only.

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