31.
    发明专利
    未知

    公开(公告)号:DE3921451A1

    公开(公告)日:1991-01-03

    申请号:DE3921451

    申请日:1989-06-30

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP90/01030 Sec. 371 Date Oct. 22, 1991 Sec. 102(e) Date Oct. 22, 1991 PCT Filed Jun. 27, 1990 PCT Pub. No. WO91/00317 PCT Pub. Date Jan. 10, 1991.Anthraquinone dyes I I (Ar = aryl, A = anthraquinonyl) are prepared by reacting a aryldihalotriazine II II (Hal = chlorine or bromine) with an aminoanthraquinone III A-NH2 in an N-C1-C4 -alkylpyrrolid-2-one or -piperid-2-one, N-di-C1-C4 -alkylacetamide or -propionamide or urea derivatives of the formula IV IV (R = identical or different alkyl groups of from 1 to 4 carbon atoms which can also be linked together to form a 5- or 6-membered ring containing the urea group) as solvent.

    33.
    发明专利
    未知

    公开(公告)号:DE3731809A1

    公开(公告)日:1989-03-30

    申请号:DE3731809

    申请日:1987-09-22

    Applicant: BASF AG

    Abstract: A process for the preparation of bisalkoxy(iso)violanthrenediones involves alkylating the corresponding bishydroxyl compounds in an organic reaction medium with methyl benzoate as the reaction medium. The ester can easily be regenerated and is stable under the reaction conditions.

    PROCESS FOR PREPARING A VAT DYESTUFF

    公开(公告)号:DE3060649D1

    公开(公告)日:1982-08-26

    申请号:DE3060649

    申请日:1980-05-27

    Applicant: BASF AG

    Abstract: A vat dye obtained by heating a condensation product, which itself has been prepared by heating 3,9-di-(1-anthraquinonylamino)-benz[d,e]anthrone in an aluminum chloride/picoline or aluminum chloride/quinoline melt in the presence of sulfuryl chloride or thionyl chloride, in a melt of an alkali metal hydroxide in an alcohol or glycol or aqueous glycol. The dye gives deep clear brown dyeings having good fastness characteristics.

    39.
    发明专利
    未知

    公开(公告)号:DE3876915D1

    公开(公告)日:1993-02-04

    申请号:DE3876915

    申请日:1988-09-17

    Applicant: BASF AG

    Abstract: Prodn. of bisalkoxy-(iso) -violanthrenediones of formula (IA) and (IB) (R = 1-4C alkyl) is carried out by alkylating the corresp. bishydroxy cpds. (II) (R = G) in an organic liq. medium (III) in the presence of alkali metal salts (IV) of weak acids and tert. aliphatic and/or opt. tert. aromatic amines (V) at 100-200 deg.C. The novelty is that (III) is methyl benzoate. Pref. the alkylating agent is dialkyl sulphate, alkyl o- and/or p-toluenesulphonate, alkyl benzenesulphonate and/or dialkyl methanephosphonate. Pref. (IV) is Na2CO2 and/or K2CO3.

    40.
    发明专利
    未知

    公开(公告)号:DE3773811D1

    公开(公告)日:1991-11-21

    申请号:DE3773811

    申请日:1987-09-09

    Applicant: BASF AG

    Abstract: The dye C.I. Vat Blue 16 (C.I. No. 71200), is prepd. by alkylating 16,17-dihydroxy-violanthrene dione-5,10 in a tert. (cyclo)aliphatic amine as solvent, at 100-230 deg.C. Alkylation is pref. in tri-n-butylamine solvent, in presence of alkali metal salts of weak acids, using 2-chloroethyl o- or p-toluene sulphonate, 2-chloroethyl benzene sulphonate and/or 1,2-dibromoethane as alkylating agent.

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