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 |
|