Monoazo dyestuff containing di-cyano substituents ortho to the a

Details Monoazo dyestuff containing di-cyano substituents ortho to the a Monoazo dyestuff containing di-cyano substituents ortho to the a

1976-01-15

1980-12-02

Nigel, Floyd D.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260152, 260155, 260156, 260205, 260206, 260207, 2602075, 260208, C09B 2908, C09B 2926, C09B 2936

Patent

active

042370485

ABSTRACT:
Azo dyestuff having the formula ##STR1## in which A is an aromatic carbocyclic radical containing a CN substituent in the o-position to the azo group and K is the radical of a coupling component as well as the process for their production are disclosed. The process involves cyano exchange between a metal cyanide, e.g. CuCN and the corresponding dyestuff containing Cl or Br instead of CN, in an organic solvent particularly polar aprotic organic solvents, e.g. dimethyl sulfoxide. The dyestuffs are suitable for dyeing a variety of fiber material such as cotton, wool, silk as well as synthetic materials such as polyamide and polyethylene terephthalate to give dyeings which are characterized by great clearness and good general fastness properties.

REFERENCES:
patent: 2173417 (1939-09-01), Huber
patent: 2888450 (1959-05-01), Kruckenberg
patent: 2941992 (1960-06-01), Rhyner et al.
patent: 2955901 (1960-10-01), Kruckenberg
patent: 2971953 (1961-02-01), Rhyner
patent: 2972508 (1961-02-01), Kruckenberg et al.
patent: 3119809 (1964-01-01), Nicolaus
patent: 3342804 (1967-09-01), Mueller
patent: 3393191 (1968-07-01), Mueller
patent: 3483180 (1969-12-01), Ramanathan

Affiliated with

Also associated with

Rating

Monoazo dyestuff containing di-cyano substituents ortho to the a does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Monoazo dyestuff containing di-cyano substituents ortho to the a, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Monoazo dyestuff containing di-cyano substituents ortho to the a will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2283272