Dyeing textile materials with vat and sulfur dyes and reducing agent stabilizers for same

Abstract

Abstract AN IMPROVED PROCESS FOR DYEING CELLULOSIC TEXTILES WITH VAT OR SULFUR DYES USING SODIUM DITHIONITE AS REDCUCING AGENT, USING AS A STABILIZER FOR THE REDUCING AGENT A STABILIZER OF THE FORMULA X-(CH(-R)-SO3(-)-M(+))N WHEREIN M IS A MONOVALENT CATION SELECTED FROM THE CLASS CONSISTING OF ALKALI METAL AND AMMONIUM CATIONS, R IS A MONOVALENT GROUP SELECTED FROM THE CLASS CONSISTINGOF HYDROGEN, ALKYL, ALKENYL AND FURYL, N IS AN INTEGER OF 1 TO 3, X IS A GROUP HAVING A VALENCE OF N AND IS SELECTED FROM THE CLASS CONSISTING OF HDROXYL AND SUBSTITUENTS HAVING THE FORMULA R''3-NN AND R'' IS A MONOVALENT RADICAL SELECTED FROM THE CLASS CONSISTING OF HYDROGEN AND MONOVALENT HYDROCARBON, SAID STABILIZER BEING USED IN AN AMOUNT PROVIDING ABOUT 0.01 TO ABOUT 2 MOLS OF -CH(-R)-SO3(-)-M(+) UNIT OF SAID STABILIZER PER MOL OF SAID REDUCING AGENT. ALSO, THE STABILIZER AS DEFINED ABOVE IN DRY PARTICULATE FORM AND NOVEL MIXTURES OF REDUCING AGENT AND STABILIZER.

Inventors

• 👤 J Etters

Bibliographic Details