Scarcely dusting ice color coupling components are obtained by admixture of .5 to 15 percent by weight of an addition product of 2 to 5 mols of ethylene oxide to a lower alkanol, the resulting polyether having a molecular weight of about 150 to about 280. Optionally surfactants, complex-forming agents and inorganic salts are added.
A nitrogen-containing tetracyclic compound represented by the formula: ##STR1## wherein Y.sup.1 --Y.sup.2 --Y.sup.3 is N--C.dbd.N or a group represented by the formula: C.dbd.C--NR.sup.3 (wherein R.sup.3 is a hydrogen atom, a C.sub.1-5 alkyl group or a nitrogen-containing C.sub.2-10 alkyl group), Y.sup.4 is S, SO, SO.sub.2, CH.sub.2 or a group represented by the formula: NR.sup.4 (wherein R.sup.4 is a C.sub.1-5 alkanoyl group or a C.sub.1-5 alkyl group), R.sup.1 and R.sup.2 are the same or different, and are each a hydrogen atom, a C.sub.1-10 alkyl group, a C.sub.3-15 alkoxyalkyl group or a C.sub.3-15 alkylaminoalkyl group, or R.sup.1 and R.sup.2 taken together with the nitrogen atom to which they are attached form a cyclic amino group, X.sup.1 and X.sup.2 are the same or different, and are each a hydrogen atom, a C.sub.1-5 alkyl group, a C.sub.1-5 alkoxy group or a halogen atom, and n is 0, 1 or 2; or a pharmaceutically acceptable salt thereof.
An improved aqueous-organic solvent solution, having a pH between 10 and 13, of the disazo dye ##SPC1## Wherein X is a cation, preferably the sodium or lithium cation, the improvement comprising the presence, in combination, of I. 0.1% to 10%, by total weight, of a particular anionic surfactant, and Ii. 0.1% to 3.0%, by total weight, of a particular nonionic surfactant.
Highly concentrated solutions of coupling components of the ice-color dyeing technique had been found which possess a very good stability to storage and can readily be used for the preparation of diluted aqueous bottoming baths of the ice-color technique; these novel solutions contain the coupling component, water, sodium-or potassium hydroxide, and are characterized by the imperative content of diethylene-glycol or a content of a mixture of diethylene-glycol and ethylene-glycol or propylene-glycol or both.
Aqueous dispersions of primary aromatic amines which contain at least 30 per cent by weight of a primary aromatic amine, a water-soluble condensation product which contains 2 to 6 radicals of oxalkylated aromatic compounds carrying hydroxy or carboxy groups, these radicals being linked to each other over methylene groups either directly or via radicals of aromatic compounds, and containing water and, optionally, a polyvalent alcohol. These dispersions are very stable and storable for a very long period, the primary aromatic amines therein are so finely dispersed that they do not precipitate; they have a low viscosity and can easily be introduced with stirring in a dyeing liquor or in pastes. These novel dispersions are suitable for the preparation of water-insoluble azo dyestuffs according to the methods of ice-color technique by mixing them with a sodium nitrite solution and a hydrochloric acid solution for diazotization thereafter, the diazo compounds obtained may be used in known and usual manner for the preparation of the dyestuffs.
4063880 - Concentrated disazo dye-surfactant solution - Owned by E. I. Du Pont de Nemours and Company (Wilmington, DE) [*] Notice:The portion of the term of this patent subsequent to May 18, 1993 has been disclaimed.
An improved aqueous-organic solvent solution, having a pH between 10 and 13, of the disazo dye ##STR1## wherein X is a cation, preferably the sodium or lithium cation, having therein a combination of I. 0.1% to 10%, by total weight, of a particular anionic surfactant, and Ii. 0.1% to 10.0%, by total weight, of a particular nonionic surfactant.
