Ciba-geigy Corporation

Ciba-geigy Ag

Werner Kuster

Carl Becker

Jacques E Wegmann

Guenther Zwahlen

New dyestuff salts of the formula ##STR1## wherein A denotes the radical of an azine dyestuff, R, R.sub.1 and R.sub.2 denote alkyl radicals with a total of 10-24 carbon atoms and n denotes the number 1-4. The dyestuff salts show excellent solubility in organic solvents such as alcohols, ketones and esters. Due to the excellent solubility in organic solvents, the dyestuff of the instant invention are especially suitable for dyeing solutions of polymers such as polystyrene or polyamides.

Tertiary-alkylamine salts of azine dyestuffs

New dyestuff salts of the formula ##EQU1## WHEREIN A denotes the radical of an anionic dyestuff, R, R.sub.1 and R.sub. 2 denote alkyl radicals with a total of 10 - 24 carbon atoms and n denotes the number 1 - 4. The dyestuff salts show excellent solubility in organic solvents such as alcohols, ketones and esters. Due to the excellent solubility in organic solvents, the dyestuffs of the instant invention are especially suitable for dyeing solutions of polymers such as polystyrene or polyamides.

Tertiary-alkylamine salts of metal complex dyestuffs

A process for the manufacture of colored shaped articles from high polymer synthetic resins, wherein water-insoluble, hydrophobic, high polymer synthetic resins in solid form, especially in the form of granules or powders, in a mixture of hydrophilic and organophilic solvents that are reciprocally soluble in one another only to a limited extent and form a two-phase system, are treated with dyestuffs or optical brighteners, the solubility of which in the organophilic portion of the two-phase system is greater than in the hydrophilic portion, the solvent is removed, the synthetic resin dried and shaped, optionally with addition of untreated high polymer fully synthetic resin, from the melt or from a solvent.

Process for the dyeing of colored shaped articles of high polymer,

Tetra-(alkylsulphamoyl)-copper phthalocyanines of the formula ##EQU1## WHEREIN CuPc denotes a copper phthalocyanine radical, R.sub.1, R.sub.2 and R.sub.3 denote alkyl radicals with a total of 7 - 12 C atoms, R.sub.4, R.sub.5 and R.sub.6 denote alkyl radicals with a total of 11 - 13 C atoms and n denotes 0 - 4 have a good solubility an alcohol and are particularly suitable for dyeing alcoholic solutions of film-forming polymers.

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Basel, Switzerland

Werner Kuster