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    51.
    发明专利
    未知

    公开(公告)号：DE58902932D1

    公开(公告)日：1993-01-21

    申请号：DE58902932

    申请日：1989-03-03

    Applicant: BASF AG

    Inventor： HAHN ERWIN DR ,  NEUMANN PETER DR

    IPC: C07C45/64 ,  C07C45/71 ,  C07C49/84

    Abstract: A process for the preparation of 2-hydroxy-4-(2'-hydroxyethoxy)benzophenones, by reacting 2,4-dihydroxybenzophenones with ethylene carbonate in the presence of a quaternary ammonium salt catalyst at elevated temperatures, and isolating the finished product from the crude reaction mixture.

    52.
    发明专利
    未知

    公开(公告)号：DE4120366A1

    公开(公告)日：1992-12-24

    申请号：DE4120366

    申请日：1991-06-20

    Applicant: BASF AG

    Inventor： HAHN ERWIN DR ,  MAYER UDO DR ,  RAULFS FRIEDRICH-WILHELM DR ,  SCHLOESSER ULRIKE DR

    IPC: C07C303/22 ,  C07C309/51

    Abstract: Process for the preparation of I acid urea of the formula in which 7-amino-4-hydroxynaphthalene-2-sulphonic acid (I acid) is subjected to partial reaction with urea in an inert solvent at a temperature from 100 to 140 DEG C and a pressure from atmospheric pressure to 10 bar, unreacted I acid is precipitated in an acidic medium and removed, and, if appropriate, I acid urea is separated from the resulting neutralised solution by adding salt.

    54.
    发明专利
    未知

    公开(公告)号：DE4010512A1

    公开(公告)日：1991-10-10

    申请号：DE4010512

    申请日：1990-04-02

    Applicant: BASF AG

    Inventor： HAHN ERWIN DR ,  HANSEN GUENTER DR ,  LAMM GUNTHER DR ,  REICHELT HELMUT DR ,  WAGENBLAST GERHARD DR

    IPC: C09B67/22 ,  D06P1/18 ,  D06P3/54

    Abstract: Dyestuff mixtures comprising at least one azo dyestuff whose diazo component is 2-amino-3,5-dicyano-4-methylthiophene and whose coupling component originates from the 2-amino-4-thienylthiazole series, and at least one azo dyestuff whose diazo component is 2-amino-3,5-dicyano-4-methylthiophene, 2-amino-3-alkoxycarbonyl-5-cyano-4-methylthiophene or 2-amino-5-alkoxycarbonyl-3-cyano-4-methylthiophene and whose coupling component originates from the 3-cyano-4-methyl-2,6-diaminopyridine series, and/or at least one azo dyestuff whose diazo component is a 2,6-dicyano-4-alkylaniline and whose coupling component originates from the m-phenylenediamine series, and the use of the novel dyestuff mixtures for the dyeing or printing of synthetic fabrics.

    55.
    发明专利
    未知

    公开(公告)号：DE3938526A1

    公开(公告)日：1991-05-23

    申请号：DE3938526

    申请日：1989-11-21

    Applicant: BASF AG

    Inventor： DUNG BERNHARD DR ,  TRIESELT WOLFGANG DR ,  HAHN ERWIN DR ,  PERNER JOHANNES DR ,  OFTRING ALFRED DR

    IPC: C11D3/28 ,  C07D265/22 ,  C11D3/39 ,  C11D3/42

    Abstract: PCT No. PCT/EP90/01897 Sec. 371 Date Mar. 3, 1992 Sec. 102(e) Date Mar. 3, 1992 PCT Filed Nov. 13, 1990 PCT Pub. No. WO91/08279 PCT Pub. Date Jun. 13, 1991.Heterocyclic compounds which are useful as bleach activators or optical brighteners in washing and cleaning agents have the formula (* CHEMICAL STRUCTURE *) I where the variables have the following meanings: X is O, S or the group N-R3, where R3 is hydrogen, C1-C25-alkyll C1-C25-acyl or an aryl group of up to 12 carbon atoms, Y is CH or N, R1 for X=S or N-R3 is hydrogen, a C1-C25-alkyl or C2-C25-alkenyl group or a phenyl radical which may be additionally substituted by one or two C1-C4-alkyl, C1-C4-alkoxy, hydroxyl, carboxyl, sulfo, amino, C1-C4-acylamino, nitro or cyano groups or chlorine or bromine atoms, which substituents, if there are two of them, may be identical or different, R1 for X=O is phenyl, o-, m- or p-tolyl, p-chlorophenyl, m-nitrophenyl, m-methoxyphenyl or m-methylsulfonylphenyl, R2 for X=S or N-R3 is hydrogen, a C1-C4-alkyl, C1-C4-alkoxy, hydroxyl, carboxyl, sulfo, amino or C1-C4-acylamino group or a chlorine or bromine atom, and R2 for X=O is hydrogen.

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