Resist printing process
AssigneeBASF SE
InventorsAdolf Blum, Siegmar Lukas, Hermann Schwab, Rolf Strobel
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Abstract
A process for the production of resist prints under reactive dyes on textile materials which consist of cellulose fibers or a blend of cellulose fibers with other fibers, using reaction products of bisulfite adducts of aldehydes of 2 to 6 carbon atoms, or of ketones, with ammonia, primary amines or secondary amines in the molar ratio of from 3:1 to 1:1 as resists. Preferably, reaction products of a bisulfite adduct of acetaldehyde and ammonia in the molar ratio of from 3:1 to 1:1 are employed as resists. Because of the high stability of the resist print pastes, high color yields of the resist dye and satisfactory, reproducible resist effects of the ground dye are achieved.
Claims9
In an improved process for the production of resist prints under reactive dyes on textile materials which consist of cellulose fibers or of blends of these with other fibers, by padding, pre-printing or overprinting the textile material with a padding liquor or print paste which contains a resist, the improvement which comprises said resist being the reaction product of a bisulfite adduct of an aldehyde of 2 to 6 carbon atoms, or of a ketone, with ammonia or a primary or secondary amine, in the molar ratio of from 3:1 to 1:1.
Dependencies are inferred from the claim text.