Abstract:
R represents hydrogen or lower alkyl, R'' and R'''' represent hydrogen, lower alkyl or phenyl and m represents the integer 1 or 2.
A process for producing fast dyeings or prints on cellulose fibrous materials, which comprises treating the said fibrous materials in any sequence with an alkaline agent and a watersoluble dyestuff of the formula IN WHICH Z represents the radical of a water-soluble organic dyestuff molecule being linked to the identified side grouping directly or via the bridging member
IN WHICH X REPRESENTS HYDROGEN, CHLORINE, BROMINE, LOWER ALKYL OR LOWER ALKOXY, WHICH COMPRISES REACTING 1 MOL OR A BENZOXAZALONE-6-SULFINIC ACID OF THE FORMULA III
2-(O=),6-(HO2S-),X-2,3-DIHYDROBENZOXAZOLE
IN WHICH X IS DEFINED AS ABOVE, WITH 1 TO 10 MOL OF ETHYLENE OXIDE IN AQUEOUS MEDIUM AT A PH-RANGE BETWEEN ABOUT 2 AND ABOUT 6 AT A TEMPERTURE RANGE BETWEEN ABOUT 10*C. AND ABOUT 70*C.
Abstract:
or 1-aminobenzene-4- Beta -hydroxyethyl-sulfone of the formula
Compounds of the formula
WHEREIN Z is a grouping of the formula HO3SO-CH2-CH2- or CH2 CH, and their alkali metal salts, and a process for preparing them by dissolving or suspending 1-aminobenzene-4-( Beta sulfatoethyl)-sulfone of the formula in a mixture of sulfuric acid and sulfur trioxide at a temperature of from -15* to +10*C and then continuing the reaction at a temperature of from 115* to 150*C, whereupon, if desired, the sulfuric acid ester is treated, optionally after its isolation with an alkaline agent and the vinyl compound thus obtained is isolated in the form of an alkali metal salt or an acid. The novel compounds are suitable for the preparation of valuable dyestuffs containing an amino coupling component.