Dyeing cellulosic textiles with vat and sulfur dyes using sodium dithionite and an aldehyde-bisulfite addition product stabilizer
Abstract
Abstract An improved process for dyeing cellulosic textiles with vat or sulfur dyes using sodium dithionite as reducing agent, using as a stabilizer for the reducing agent a stabilizer of the formula 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 consisting of 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 hydroxyl and substituents having the formula R''3 n N 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 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
- 👤 James N Etters
Bibliographic Details
Claims Analysis
Total Claims: 3References Cited (Backward Citations)
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| 3.5 Years (Year 4) | 1975-02-28 | 1975-08-30 | 1976-02-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-28 | 1979-08-30 | 1980-02-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-28 | 1983-08-30 | 1984-02-29 | $7700.00 | Window Closed / Lapsed |