Bleaching and dyeing; fluid treatment and chemical modification – Dye or potential dye composition – additive – treatment,... – Azo – acridone – or quinone dye
Patent
1979-09-07
1981-06-16
Douglas, Winston A.
Bleaching and dyeing; fluid treatment and chemical modification
Dye or potential dye composition, additive, treatment,...
Azo, acridone, or quinone dye
260168, C09B 2700
Patent
active
042735556
ABSTRACT:
An azo compound which in the free acid form is represented by the following formula: ##STR1## where R.sub.1 stands for methyl, ethyl, R.sub.2 stands for hydrogen, methyl, methoxy or ethoxy, R.sub.3 stands for hydrogen or methyl, and K stands for ##STR2## wherein the benzene nucleus A may be further substituted by methyl, amino, acetylamino or methoxy or: ##STR3## wherein these naphthalene neuclei may be further substituted by hydroxy, amino or acetylamino, also a process for preparing the azo compound and a dyeing method using said azo compound.
REFERENCES:
patent: 2115852 (1938-05-01), Hannum et al.
patent: 2370500 (1945-02-01), Sparks
patent: 2417306 (1947-03-01), Krebser
patent: 2842538 (1958-07-01), Byland
patent: 2842539 (1958-07-01), Byland
patent: 3301629 (1966-12-01), Kramer et al.
Colour Index, Third Ed., vol. 4, 1971, pp. 4325-4339.
Gomi Masae
Nomura Hideshiro
Ozawa Hiroshi
Yamada Yasushi
Douglas Winston A.
Harris-Smith Y.
Nippon Kayaku Kabushiki Kaisha
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