Heat stable modifcn. of a monoazo dispersion dye - made by heating in water at 100 to 150 degrees celcius

    公开(公告)号:DE2525505A1

    公开(公告)日:1976-12-23

    申请号:DE2525505

    申请日:1975-06-07

    Applicant: BASF AG

    Abstract: beta-Modifn. of the monoazo dispersion dye of formula: having a given X-ray diffraction diagram, uses CuKalpha radiation which possesses 1 line of strong intensity at 8.3 degrees, lines of medium intensity at 22.2 degrees, 22.9 degrees, 23.4 degrees, 24.6 degrees, 25.2 degrees, 26.2 degrees, and 13.8 degrees, and lines of low intensity at 9.4 degrees, 10.9 degrees, 11.3 degrees 12.6 degrees, 16.4 degrees, 16.7 degrees, 17.6 degrees, 19.0 degrees and 27.6 degrees. The known alpha-modifn. is heated in water at 100-150 degrees C, opt. in presence of a dispersing agent or water-soluble solvent, e.g. 20 parts alpha-modifcn. 2 parts dispersing agent and 78 parts water are stirred in an autoclave for 12 h. at 125 degrees C and pH 7. The dyes are used for dyeing of synthetic polyester textiles, esp. in wound yarn form. The beta-modifcn. is stable at high dyeing temps. of 80-200 degrees C of which the known form is unstable and deposits on the yarn.

    24.
    发明专利
    未知

    公开(公告)号:DK0711312T3

    公开(公告)日:1997-12-22

    申请号:DK94924239

    申请日:1994-07-06

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP94/02207 Sec. 371 Date Jan. 31, 1996 Sec. 102(e) Date Jan. 31, 1996 PCT Filed Jul. 6, 1994 PCT Pub. No. WO95/04088 PCT Pub. Date Feb. 9, 1995Sulfonated and oxidized indene polymers obtainable by (a) polymerization of indene or indene derivatives of the general formula I I where R1 is hydrogen, methyl or ethyl and n is 1 or 2, or of mixtures which contain the compounds I as well as other copolymerizable and/or non-polymerizable organic compounds in an amount of at least 10% by weight, b) sulfonation of the polymer with a sulfonating agent at from 40 DEG to 130 DEG C., and c) non-chain-degrading oxidation of the polymer at from 80 DEG to 180 DEG C. These indene polymers are suitable for use as dispersants for example in dye and pigment preparations.

    30.
    发明专利
    未知

    公开(公告)号:DE58907111D1

    公开(公告)日:1994-04-07

    申请号:DE58907111

    申请日:1989-12-01

    Applicant: BASF AG

    Abstract: The process is of sulphonating aryl compounds obtainable by pyrolysis of a naphthenic residual oil and fractional distillation of the pyrolysis products of the fraction produced at from 100 to 120 DEG C under atmospheric pressure, sulphonating this aromatic fraction using oleum at temperatures of from 120 to 160 DEG C in an amount of from 0.7 to 1.2 parts by weight of oleum, based on oleum having an SO3 content of 24 % by weight, per part by weight of the aromatic fraction, and subsequently condensing the arylsulphonic acids with formaldehyde in a known manner. The condensation products are used as dispersants, in particular in the preparation of dye formulations.

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