摘要:
A process of in situ forming a dye discharge reagent on at least a portion of surface of a dyed substrate, effected by applying two or more compositions comprising reactants on the substrate, such that the reactants undergo a chemical reaction on the substrate to form the reagent is provided herein, as well as a method for dye discharging a dyed substrate using the process of in situ forming a dye discharge reagent, and a dye discharge composition comprising said dye discharge reagent. In some embodiments of the invention, the reactants are thiourea and a peroxide, and the dye discharge reagent is formamidine sulfinic acid (FSA).
摘要:
The invention provides a printing ink comprising: water; a discharge agent having the following formula where G represents a group 1 metal and n is 1-6; a sodium, magnesium, zinc or calcium salt; and an amine and/or ammonia. The ink is particularly suitable for printing onto dyed fabrics as a discharge ink.
摘要:
The invention relates to agents which are contained in a carrier of a combination of special sulphinic acid derivatives of formula (I), wherein M represents a hydrogen atom or an equivalent of a mono or polyvalent cation, R is derived from a peptide or represents a group according to one of the formulae (II) to (VI), (for the meanings of the remaining substitutients see claim 1) and contains at least one non-ionic surfactant. Said agents enable a durable decolouration of the dyed substrates to take place without darkening the decoloured substrate. The substrate structure is not damaged during the decolouration process.
摘要:
Die Erfindung betrifft ein Textildruckverfahren bei welchem ein textiles Flächengebilde mit einem Grundfarbstoff dunkel bzw. farbig eingefärbt und in einem Musterbereich mit einem Druckmuster versehen wird. Hierbei wird vorgeschlagen, dass der Musterbereich durch Tintenstrahldruck mit einer Reservetinte beaufschlagt wird, wobei die Reservetinte in dem Musterbereich ein dauerhaftes Fixieren des Grundfarbstoffs verhindert.
摘要:
By using printing pastes containing a high proportion, e.g. 8 to 15% by weight, of a humectant such as urea or glycerol, fabric printing processes may be developed which can be used both on fabric webs and on garments or garment panels with equal ease. Following the application of the printing paste, and before it has materially dried out, the fabric is confined between a pair of impermeable layers and heated to greater than 100°C. The process is particularly advantageously applied to discharge printing in connection with which it is possible to use discharge printing techniques without the necessity for subsequent washing out and with the production of a visible discharge print immediately after the heat treatment step just noted.
摘要:
Verfahren zum Bedrucken von Synthesefasern aus Polyester, Triacetat, Acetat und Polyamid sowie deren Mischungen untereinander mit Dispersionsfarbstoffen nach dem Ätz- oder Ätzreserveverfahren, bei dem man als Ätzmittel eine Mischung aus
a) 5 bis 100 Gew.-Teilen mindestens einer Verbindung der Formel und/oder eines Alkali- oder Ammoniumthiocyanats, b) 5 bis 95 Gew.-Teilen eines Alkali- oder Ammoniumhydroximethansulfinats, Alkali- oder Ammoniumhydroxiethansulfinats oder eines Ammoniakderivates, das mindestens einmal den Rest eines Alkali- oder Ammoniumsalzes der Methan- oder Ethansulfinsäure aufweist, c) 5 bis 90 Gew.-Teilen eines wasserunlöslichen Erdalkalisalzes einer Verbindung der Formel in der R = H oder C,- bis C,-Alkyl ist und d) 0 bis 50 Gew.-Teilen eines reduzierend wirkenden Kohlenhydrats, verwendet.
摘要:
A dye discharge composition exhibiting extended shelf life and/or pot life and high suitability for inkjet printing on dyed substrates, is disclosed. The composition comprises a reducing agent such as, for example, a sulfur-based reducing agent, and a chelating agent, such as a sodium salt of a polyamino carboxylic acid chelating agent. Use of the dye discharge composition in combination with a translucent colored composition and an optional opaque underbase composition, for forming an image on a dyed substrate is also disclosed. Processes for inkjet printing of an image on a dyed surface using the dye discharge composition, kits for use in such processes or an ink formulation containing same are also disclosed.
摘要:
A dye discharge composition exhibiting extended shelf life and/or pot life and high suitability for inkjet printing on dyed substrates, is disclosed. The composition comprises a reducing agent such as, for example, a sulfur-based reducing agent, and a chelating agent, such as a sodium salt of a polyamino carboxylic acid chelating agent. Use of the dye discharge composition in combination with a translucent colored composition and an optional opaque underbase composition, for forming an image on a dyed substrate is also disclosed. Processes for inkjet printing of an image on a dyed surface using the dye discharge composition, kits for use in such processes or an ink formulation containing same are also disclosed.