Preparation of a concentrated solution of an anionic azo dye con

Details Preparation of a concentrated solution of an anionic azo dye con Preparation of a concentrated solution of an anionic azo dye con

1973-02-21

1977-11-15

Higel, Floyd D.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260144, 260157, 260160, 260161, 260162, 260163, 260165, 260178, 260182, 260194, 260195, 260197, 260198, C09B 2906, C09B 2910, C09B 2924, C09B 2938

Patent

active

040585174

ABSTRACT:
Process of preparing a concentrated solution of a water-soluble anionic azo dye containing 1 to 4 sulfonic acid groups by diazotization and coupling of a diazo and coupling component, respectively, in the solvent or solvent mixture required for the concentrated solution which should have as essential solvents water and/or water-soluble or water-miscible organic solvents other than carboxylic acids. Diazotization is carried out with a nitrous acid ester of a hydroxy-substituted aliphatic hydrocarbon, e.g., an alkyl nitrite. The process provides highly stable concentrated or stock solutions of unlimited miscibility with water for use in continuous dyeing methods.

REFERENCES:
patent: 2418416 (1947-04-01), Locke
patent: 3793305 (1974-02-01), Balon
Saunders, "The Aromatic Diazo-Compounds and Their Technical Applications", pp. 3, 18 and 19 (1949).

Affiliated with

Also associated with

Rating

Preparation of a concentrated solution of an anionic azo dye con does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Preparation of a concentrated solution of an anionic azo dye con, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Preparation of a concentrated solution of an anionic azo dye con will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1719446