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公开(公告)号：DE2401089A1
公开(公告)日：1975-07-17
申请号：DE2401089
申请日：1974-01-10
Applicant: BASF AG
Inventor： HARTWIG ERNST DIPL CHEM DR , GRASER FRITZ DIPL CHEM DR
Abstract: Leuco-1,4,5,8-tetrahydroxyanthraquinones (I) contg. 1-5 wt. % Br or Cl are prepd. by treating a mixt. of 1,5-diamino-4,8-dihydroxy- and 1,8-diamino-4,5-dihyroxyanthraquinones (prepd. by reducn. and halogenation of dinitroanthraquinone mixts. then treating the tri- and tetra-halo diaminoanthraquinones with H2SO4-boric acid) with dithionite in alkaline medium. Pref. starting materials contain 1-2 Br atoms. When reacted with NH3, aliphatic amines or phenylaliphatic amines (I) give dyes contg. 1-4 wt.% Cl which have better colouring properties on synthetic and semi-synthetic fibres than dyes obtd. from halogen-free leuco cpds.
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公开(公告)号：DE2524748A1
公开(公告)日：1976-12-16
申请号：DE2524748
申请日：1975-06-04
Applicant: BASF AG
Inventor： HARTWIG ERNST DIPL CHEM DR
IPC: C09B1/22 , C07C67/00 , C07C253/00 , C07C255/58 , C09B1/00 , C09B1/16 , C09B1/36
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Patent Agency Ranking
公开(公告)号：DE2346047A1
公开(公告)日：1975-04-24
申请号：DE2346047
申请日：1973-09-13
Applicant: BASF AG
Inventor： MAIER KARL DR , HARTWIG ERNST DIPL CHEM DR
Abstract: Anthraquinoid disperse dyes of formula:
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公开(公告)号：DE2751834A1
公开(公告)日：1979-05-23
申请号：DE2751834
申请日：1977-11-19
Applicant: BASF AG
Inventor： ELSER WOLFGANG DIPL CHEM DR , HARTWIG ERNST DIPL CHEM DR , MEYER GUENTER DIPL CHEM DR , RUSKE MANFRED
Abstract: Anthraquinene dyes of formula (I) (in which R is 1-4C alkyl 1-4C alkoxy ethyl, cyclolexyl or beizyl) are used in transfer printing esp. for printing of polyester fabrics in blue shades. Very good fastness, esp. to light and wet treatments, is obtd.
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公开(公告)号：DE2541800A1
公开(公告)日：1977-03-31
申请号：DE2541800
申请日：1975-09-19
Applicant: BASF AG
Inventor： HARTWIG ERNST DIPL CHEM DR
IPC: C09B1/22 , C07C227/04 , C07C229/74 , C09B1/16 , C07C101/80
Abstract: 1.4-diamino-anthraquinone-2-carboxylic acid (I) is prepd. by reducing the corresp. dinitro-anthraquinone cpd. with SO3 and S (sulphur sesquioxide) at room temp. to 45 degrees C. (I) is obtd. in high yields and purity and reduced reaction times. (I) is used for the prepn. of its derivs., the presence of a little residual S being unimportant, or advantageous if (I) is reacted with cyanides to obtain 1,4-diamino-anthraquinone-2,3-dicarboxylic acid dihydro derivs. which together with oxidising agents, form dehydrogenation catalysts.
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公开(公告)号：DE2536051A1
公开(公告)日：1977-02-17
申请号：DE2536051
申请日：1975-08-13
Applicant: BASF AG
Inventor： MAIER KARL DR , HARTWIG ERNST DIPL CHEM DR
Abstract: The dyes are of formula (I): (in which R1 is H or opt. substd. 1-3C alkyl; and R2 is opt. substd. 1-10C alkyl, 3-12C alkoxyalkyl or 5-8C cycloalkyl). They are prepd. by reaction of a 1,4-diamino anthraquinone 2-carbonamide (II) with CN ions in organic or aq. -organic phase, with simultaneous or subsequent treatment with a dehydrogenating agent. The reaction is at pH 10.5-12 (where R1 is H) or at 8-11 (where R1 is alkyl). (I) are used for dyeing synthetic fibres, esp. linear polyesters, in brilliant turquoise shades. Formation of red impurities, which cause duller shades and are expensive to remove, is avoided by reaction within a narrow pH range and/or in the presence of buffers. In an example, 1-amino-4-methylamino anthraquinone 2-carboxylic acid gamma-methoxy propylamino antraquinone NaCN in presence of nitrobenzene and NH4HCO3, in methanol/formaldehyde soln., with addn. of acetic acid to give pH 9-9.3. After 3 hrs. under reflux and addn. of water, a blue dye no red impurities is obtd.
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