序号 专利名 申请号 申请日 公开(公告)号 公开(公告)日 发明人
61 Sulfonic-acid-group containing disazo dyestuffs US606395 1975-08-21 US4051123A 1977-09-27 Bernhard Piller; John Lenoir; Alfred Froehlich; Thomas Stauner; Paul Tschopp
In a first main aspect azo dyestuffs of the formula ##STR1## wherein A, B, X and Y are certain substituents, in a second main aspect azo dyestuffs of the formula ##STR2## wherein B' represents certain substituents and in a third main aspect azo dyestuffs of the formulaA.sub.1 --N.dbd.N--B.sub.1 --NH--CO--X.sub.1 --Y--Z.sub.1 --OC--HN--B.sub.1 --N.dbd.N--A.sub.1wherein A.sub.1, B.sub.1, X.sub.1, Z.sub.1 and Y are certain substituents as well as the use of said azo dyestuffs in photographic material are disclosed.
62 Asymmetrical frisazo dyestuffs derived from diazotized 2,7-diamino-carbazole US381167 1973-07-20 US3966703A 1976-06-29 Wolf-Eckhard Bleck; Horst Nickel; Karl-Heinz Schundehutte
Azo dyestuffs of the formula ##SPC1##Wherein A and B are different radicals of an aromatic coupling component are described. The new dyestuffs are outstandingly suitable for dyeing and printing natural or synthetic fibre materials containing hydroxyl groups and nitrogen like wool, wool-cotton union, silk, high molecular polyamide as well as paper pulp and paper materials and leather to give dyeings havings good fastness properties.
63 Water-soluble disazo dyestuffs US3467645D 1964-11-06 US3467645A 1969-09-16 KELLER HEINZ; GROSSMANN HANS
64 Polyazophenols and polyazophenol greases US46242665 1965-06-08 US3346491A 1967-10-10 GIAMMARIA JOHN J; LAW DEREK A
65 Tetrakisazo dyestuffs US83105859 1959-08-03 US2960497A 1960-11-15 ERNST MESSMER
66 Metallisable polyazo dyestuffs and the complex copper compounds thereof US66623957 1957-06-17 US2927917A 1960-03-08 RUDOLF DURIG; WERNER BOSSARD
67 Metallisable azo dyestuffs US53276155 1955-09-06 US2794797A 1957-06-04 RONALD DAVIES ROBERT; ROBERTUS TODD ALEXANDER
68 Polyazo-dyestuffs US43159554 1954-05-21 US2777838A 1957-01-15 RICHARD HUSS; ARTHUR SIEBERT; JOSEF WEISSERT
69 Disazo dyestuffs US4815648 1948-09-07 US2547912A 1951-04-03 PETER HINDERMANN
70 Azo-dyestuffs and process of making same US58643645 1945-04-03 US2494416A 1950-01-10 FRITZ STRAUB; WALTHER HANHART; EMIL MANNHART
71 Disazo and polyazo benzidine type dyestuffs US49970743 1943-08-23 US2404198A 1946-07-16 FRITZ STRAUB; JAKOB BRASSEL
72 Tetrakisazo dyestuffs soluble in water US36565340 1940-11-14 US2300636A 1942-11-03 ADOLF SIEGLITZ; MARTIN REUTER
73 Azo dyestuffs and process of preparing same US28903839 1939-08-08 US2283294A 1942-05-19 FRITZ STRAUB; PETER PIETH; WALTER ANDERAU; WALTER HANHART
74 Azo dyes US34012240 1940-06-12 US2249334A 1941-07-15 SPARKS CHILES E; HUSSEY STEWART C; REYNOLDS WILLIAM B; ROSSANDER SWANIE S
75 Metalliferous azo dyestuffs US19927738 1938-03-31 US2207859A 1940-07-16 JOSEPH GYR
76 Azo dyes US15196237 1937-07-03 US2178757A 1939-11-07 HENRY JORDAN; ROSSANDER SWANIE S
77 Polyazo dyestuffs US11796936 1936-12-28 US2156597A 1939-05-02 BERTRAM MAYER; ALFRED HENZI ERNST
78 Azo dyestuffs and their production US9089436 1936-07-16 US2120560A 1938-06-14 HANS KRZIKALLA; PAUL GARBSCH
79 Azo dyestuffs US68262533 1933-07-28 US2090938A 1937-08-24 CONRAD KARL F
80 Azo dyestuffs US46992630 1930-07-22 US1846644A 1932-02-23 HANS KRZIKALLA
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