EP3377693B1 - Composition destinée au traitement d'un substrat cellulosique et procédé pour colorer le substrat cellulosique - Google Patents

Composition destinée au traitement d'un substrat cellulosique et procédé pour colorer le substrat cellulosique Download PDF

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Publication number
EP3377693B1
EP3377693B1 EP16733690.8A EP16733690A EP3377693B1 EP 3377693 B1 EP3377693 B1 EP 3377693B1 EP 16733690 A EP16733690 A EP 16733690A EP 3377693 B1 EP3377693 B1 EP 3377693B1
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EP
European Patent Office
Prior art keywords
dye
cellulosic substrate
composition
printing
polydimethylsiloxane
Prior art date
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Application number
EP16733690.8A
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German (de)
English (en)
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EP3377693A1 (fr
Inventor
Ambrogio Caccia Dominioni
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ICS Tech SRL
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ICS Tech SRL
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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
    • D06P5/001—Special chemical aspects of printing textile materials
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
    • D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
    • D06P1/52—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing synthetic macromolecular substances
    • D06P1/5264—Macromolecular compounds obtained otherwise than by reactions involving only unsaturated carbon-to-carbon bonds
    • D06P1/5292—Macromolecular compounds obtained otherwise than by reactions involving only unsaturated carbon-to-carbon bonds containing Si-atoms
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
    • D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
    • D06P1/64—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing low-molecular-weight organic compounds without sulfate or sulfonate groups
    • D06P1/642—Compounds containing nitrogen
    • D06P1/6426—Heterocyclic compounds
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
    • D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
    • D06P1/64—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing low-molecular-weight organic compounds without sulfate or sulfonate groups
    • D06P1/642—Compounds containing nitrogen
    • D06P1/649—Compounds containing carbonamide, thiocarbonamide or guanyl groups
    • D06P1/6491—(Thio)urea or (cyclic) derivatives
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
    • D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
    • D06P1/64—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing low-molecular-weight organic compounds without sulfate or sulfonate groups
    • D06P1/642—Compounds containing nitrogen
    • D06P1/649—Compounds containing carbonamide, thiocarbonamide or guanyl groups
    • D06P1/6495—Compounds containing carbonamide -RCON= (R=H or hydrocarbons)
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
    • D06P3/58—Material containing hydroxyl groups
    • D06P3/60—Natural or regenerated cellulose
    • D06P3/66—Natural or regenerated cellulose using reactive dyes
    • D06P3/663—Natural or regenerated cellulose using reactive dyes reactive group directly attached to heterocyclic group
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
    • D06P5/30—Ink jet printing

Definitions

  • This invention relates to a composition for the treatment of a cellulosic substrate with a view to colouring it by printing, and a kit for that treatment, a method for colouring the cellulosic substrate and use associated with that method.
  • composition and kit for the treatment of cellulosic fibres in order to colour them by means of printing and a method and a use for the colouring of cellulosic fibres using monochlorotriazine dyes.
  • the quality of the coloured fabric also depends on the fixing method used after the colouring stage.
  • thermofixing which consists in fixing the dyes through the application of dry heat. This process proves more advantageous in terms of water consumption, application times, washing efficiency and reduced plant size. It has also been found that after thermofixing the quantity of dye lost during the washing stage is less than in comparison with steaming.
  • thermofixing has an adverse effect on the final appearance of the dyed fabric.
  • the colours obtained are visibly less intense, and the fabric has a slightly rough feel to the touch.
  • the object of this invention is therefore that of providing a composition and a kit for the treatment of a cellulosic substrate which allows the latter to be coloured by means of printing and which makes it possible to obtain an optimum final product even after thermofixing.
  • Another object of the invention is that of providing a method for colouring a cellulosic substrate in which colouring of the cellulosic substrate can be performed by ink-jet printing or rotary printing.
  • This invention relates to a composition for the treatment of a cellulosic substrate for colouring it through printing.
  • printing is to be understood to mean any type of printing suitable for the application of a dye onto a cellulosic substrate using digital printing methods such as for example ink-jet printing, rotary printing, screen printing or others.
  • cellulosic substrate means cellulosic fibres in the form of fabrics and yarns in general.
  • the composition comprises nicotinamide, a polydimethylsiloxane and urea.
  • the nicotinamide acts as an activator or catalyst of the colouring reaction with the cellulosic substrate. This activator function is more efficient with monochlorotriazine dyes.
  • the polydimethylsiloxane on the other hand has a corrective function in that it closes off much of the porosity in the cellulosic substrate, rendering it smoother. This brings about various advantages, such as better optical density of the inks. It has also been found that using polydimethylsiloxane together with nicotinamide it is possible to obtain a better colour yield on the fabric, with more intense tones and brighter colours, even in the situation where a printing process combined with thermofixing is used. In addition to this, the fabric obtained is softer to the touch in comparison with fabric which has only been treated with nicotinamide. This reactive polydimethylsiloxane is permanent and can therefore not be washed out in subsequent washes and does not in any way affect the final fastness of the applied dyes.
  • Urea acts as a hydrating agent for the thermofixing stage. More specifically, during the application of heat associated with fixing, the urea creates a network on the cellulosic substrate which contains the dye in a non-aggregated form and maintains it in that state until temperatures are high, in addition to the function of retaining the water which is necessary for the reaction between the dye and the cellulosic substrate at the abovementioned high temperatures.
  • the polydimethylsiloxane is of the hydrophilic type, is reactive with the substrate, is permanent and has a low refractive index.
  • permanent is meant that the polydimethylsiloxane remains on the cellulosic substrate even after washing.
  • low refractive index is meant a refractive index of less than 1.4, so that the dye has greater intensity and brightness.
  • the polydimethylsiloxane is of the amine type, that is it comprises at least one amine functional group.
  • the polydimethylsiloxane should be in a macroemulsion, so as to render the cellulosic substrate less porous, with the result of achieving a better optical density for the inks.
  • the nicotinamide is present in a concentration of between 5 and 25 g/kg, the polydimethylsiloxane between 30 and 90 g/kg, and the urea between 50 and 400 g/kg with respect to the total weight of the composition.
  • the composition comprises between 10 and 20 g/kg of nicotinamide, between 40 and 80 g/kg of polydimethylsiloxane, and between 200 and 300 g/kg of urea with respect to the total weight of the composition.
  • the composition also comprises a thickener, which may be of natural or synthetic origin.
  • a thickener is selected from alginates, polyacrylates or carboxymethylcellulose. These compounds have the advantage that they do not contain OH groups which are likely to react with the dye, and therefore enter into competition with the OH groups in the cellulosic substrate, which would result in less dye being available for reaction with the cellulosic substrate.
  • the alginates may be of the high, medium or low viscosity type, and the carboxymethylcellulose may have various degrees of substitution.
  • the thickener comprises medium/high viscosity alginates which have the advantage of giving rise to a porous structure on the cellulosic substrate which is more regular than acrylates and carboxymethylcellulose, with regard to their thermal stability, that is they maintain a suitable viscosity and a suitably porous structure, above all in the temperature range required for thermofixing.
  • regularity of the porous structure is an advantage for the regularity of the optical density of the ink deposited on the substrate.
  • Correct pore size at the high temperatures in use makes the ink pass through correctly without creating steric hindrance interferences because of the dimensions of the dye molecules, but not pore sizes which are sufficiently high to sufficiently impede migration of the ink.
  • an increase in the surface area of the porous structure will result in an increase in its porosity, and greater porosity results in less coalescence of the drops of ink on the substrate, and therefore a more regular optical density.
  • thickening agents based on alginates make optimum control of dye migration possible even at high temperatures, in that their cross-linked structure, and therefore their viscosity, also persists as temperature rises, and therefore, by not decomposing their porous structure and reducing only their viscosity, they favour migration of dye from the thickener to the cellulose, maintaining the desired definition of the printing, thanks to the residual viscosity, as well as the necessary contact with the cellulosic substrate, thanks to the reduced migration, so that the dye-fibre reaction can take place.
  • medium/high viscosity alginates give the best results in terms of the optical density of printing and colour yield. It will also be noted that medium/high viscosity alginates maintain a regular porous network, above all even under alkaline conditions, in particular at pH 8 - 9.
  • the composition according to the invention also comprises at least one rheological stabiliser selected from the terpenes.
  • the terpene is pinene.
  • the pinene is provided in the form of pine oil, and incorporated in the composition through an aqueous emulsion of nicotinamide in the pine oil; this terpene has the ability to modify the rheology of the printing paste, rendering it less pseudoplastic, and therefore more newtonian, and increasing the transfer capacity of the printing paste onto the substrate during the stage of preparation for ink-jet printing or direct printing using rolls and silk screen.
  • the composition also comprises a hydrophilic polydimethylsiloxane having a low refractive index.
  • a low refractive index is meant a refractive index of less than 1.4.
  • the presence of the polydimethylsiloxane having a low refractive index makes it possible to reduce the refractive index of the substrate, thus increasing the optical path of the light incident within the fibre on which the ink is deposited. This results in a decrease in the white reflection of the substrate, and therefore in a relative increase in the optical density of the printed colour.
  • the composition comprises nicotinamide, the hydrophilic and reactive polydimethylsiloxane having a low refractive index, an increased quantity of urea, a thickener selected from alginates, carboxymethylcellulose and polyacrylates, sodium bicarbonate and an anti-reducing agent based on meta-nitrobenzene-sulfonate.
  • composition may also form part of a kit for preparation of the cellulosic substrate.
  • This kit is to be intended as being part of this invention.
  • composition may be applied directly to the cellulosic substrate before the printing stage and that stage of the process is described as "preparation" in the case where ink-jet printing is intended.
  • composition should be provided in the form of a paste which also comprises at least one dye.
  • This paste for colouring a cellulosic substrate is also intended to be protected by this application.
  • the dye is preferably a monochlorotriazine dye and even more preferably a monofunctional monochlorotriazine dye. It has been found that when undergoing thermofixing monofunctional monochlorotriazine dyes are fixed to a greater extent than bifunctional monochlorotriazine dyes.
  • This invention also relates to a method for dyeing a cellulosic substrate, comprising, but not necessarily in the order indicated, the stages of:
  • composition comprising nicotinamide, polydimethylsiloxane and urea it is possible to avoid fixing stage d) being performed by steaming, and to maintain a high quality of the dyed cellulosic substrate in both colour yield, maintenance of the white (unprinted parts) and the softness of the fabric.
  • the dye is a monochlorotriazine dye. Even more preferably the dye is a monofunctional monochlorotriazine dye. It has been found that when they undergo thermofixing monofunctional monochlorotriazine dyes are fixed more quickly than in the steaming process, resulting in an improvement in production times and energy expenditure, but comparable as regards the quantity of reacted dye. Bifunctional monochlorotriazine dyes on the other hand are fixed less effectively by thermofixing.
  • stage c) of applying the dye is carried out by ink-jet printing of the dye onto the cellulosic substrate.
  • stages a), b) and c) are performed in succession, and in the order indicated, that is after the substrate has been treated with the composition according to the invention the treated substrate is dried and then coloured by ink-jet printing.
  • stage c) of applying the dye is carried out by rotary printing.
  • stage a) of treating the cellulosic substrate takes place through a procedure of impregnating the substrate, in particular through a pad batch or rotary printing process.
  • Washing stage e) is preferably carried out using at least one fatty amine, preferably ethoxylated.
  • This surfactant has a dye inhibitor function during the stage of washing the dyed cellulosic substrate.
  • washing is also carried out using sodium dodecylbenzene sulfonate, mixed with the fatty amine. It has in fact been found that in the presence of the ethoxylated fatty amine this compound produces a synergistic effect in washing efficiency and inhibition of dye redeposition, thus resulting in better efficiency in washing the unfixed dyes and optimum maintenance of the white and the original printed tones due to contamination of the unfixed dye. It has been found that this washing kit reduces the washing tanks in continuous washing to only three in comparison with the six normally used, thus improving water consumption.
  • the ethoxylated fatty amine or the mixture of fatty amine with sodium dodecylbenzene sulfonate is sold in the form of a kit for washing a cellulosic substrate following printing and thermofixing.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Coloring (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

Claims (14)

  1. Composition pour le traitement d'un substrat cellulosique pour le colorer avec des colorants de monochlorotriazine, comprenant
    du nicotinamide en tant qu'activateur
    du polydiméthylsiloxane, et
    de l'urée.
  2. Composition selon la revendication 1, dans laquelle le polydiméthylsiloxane comprend au moins un groupe fonctionnel amine.
  3. Composition selon l'une quelconque des revendications précédentes, dans laquelle le polydiméthylsiloxane est fourni en tant que macroémulsion.
  4. Composition selon l'une ou plusieurs des revendications précédentes, comprenant entre 5 et 25 g/kg de nicotinamide, entre 30 et 90 g/kg de polydiméthylsiloxane et entre 50 et 400 g/kg d'urée par rapport au poids total de la composition, de préférence comprenant entre 10 et 20 g/kg de nicotinamide, entre 40 et 80 g/kg de polydiméthylsiloxane et entre 200 et 300 g/kg d'urée par rapport au poids total de la composition.
  5. Composition selon l'une ou plusieurs des revendications précédentes, comprenant au moins un épaississant sélectionné parmi un alginate, un polyacrylate ou une carboxyméthylcellulose, de préférence comprenant également un stabilisant rhéologique à base de pinène.
  6. Pâte pour la coloration d'un substrat cellulosique par impression, comprenant la composition selon l'une ou plusieurs des revendications précédentes et au moins un colorant.
  7. Kit pour le traitement d'un substrat cellulosique afin de le colorer au moyen de colorants de monochlorotriazine, comprenant la composition selon l'une ou plusieurs des revendications 1 à 6.
  8. Utilisation d'un polydiméthylsiloxane avec du nicotinamide pour traiter un substrat cellulosique afin de le colorer par impression.
  9. Méthode pour la coloration d'un substrat cellulosique, comprenant, non nécessairement dans l'ordre suivant, les étapes suivantes :
    a) application d'une composition selon l'une des revendications 1 à 5 audit substrat cellulosique ;
    b) séchage dudit substrat cellulosique ;
    c) application d'au moins un colorant audit substrat cellulosique par impression ;
    d) fixation dudit colorant par thermofixation ; et
    e) lavage dudit substrat cellulosique.
  10. Méthode selon la revendication précédente, dans laquelle l'étape c) d'application du colorant est effectuée par une impression à jet d'encre, les étapes a) et c) étant effectuées l'une après l'autre, ou
    dans laquelle l'étape c) d'application du colorant est effectuée par une impression rotative, les étapes a) et c) étant effectuée de façon simultanée et avant l'étape b) de séchage du substrat cellulosique.
  11. Méthode selon l'une des revendications 9 à 10, dans laquelle le colorant est un colorant de monochlorotriazine, de préférence dans laquelle le colorant est un colorant de monochlorotriazine monofonctionnel, idéalement dans laquelle le colorant est appliqué par une impression à jet d'encre.
  12. Méthode selon l'une ou plusieurs des revendications 9 à 11, dans laquelle l'étape a) de traitement du substrat cellulosique est effectuée à l'aide d'un processus d'impression rotative ou d'imprégnation.
  13. Méthode selon l'une ou plusieurs des revendications 9 à 12, dans laquelle l'étape de lavage e) est effectuée avec une amine grasse éthoxylée.
  14. Méthode selon la revendication précédente, dans laquelle l'étape de lavage e) est réalisée avec du dodécylbenzène sulfonate de sodium mélangé à l'amine grasse éthoxylée.
EP16733690.8A 2015-11-20 2016-05-16 Composition destinée au traitement d'un substrat cellulosique et procédé pour colorer le substrat cellulosique Active EP3377693B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITUB2015A005790A ITUB20155790A1 (it) 2015-11-20 2015-11-20 Composizione per il trattamento di un substrato cellulosico e metodo di colorazione del substrato cellulosico
PCT/IB2016/052823 WO2017085567A1 (fr) 2015-11-20 2016-05-16 Composition destinée au traitement d'un substrat cellulosique et procédé pour colorer le substrat cellulosique

Publications (2)

Publication Number Publication Date
EP3377693A1 EP3377693A1 (fr) 2018-09-26
EP3377693B1 true EP3377693B1 (fr) 2020-03-18

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EP16733690.8A Active EP3377693B1 (fr) 2015-11-20 2016-05-16 Composition destinée au traitement d'un substrat cellulosique et procédé pour colorer le substrat cellulosique

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EP (1) EP3377693B1 (fr)
IT (1) ITUB20155790A1 (fr)
WO (1) WO2017085567A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109930403B (zh) * 2019-03-19 2022-01-04 上海贝通色彩科技有限公司 用于纺织品的印花糊料组合物

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3653952A (en) * 1958-06-26 1972-04-04 Union Carbide Corp Dyeable resin bonded fibrous substrates
US6040014A (en) * 1997-10-23 2000-03-21 Izmirlian; Avedik Fabric treatment composition
US6623532B2 (en) * 2000-09-06 2003-09-23 Seiren Co., Ltd. Ink-jet printing method and printed goods

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
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EP3377693A1 (fr) 2018-09-26
WO2017085567A1 (fr) 2017-05-26
ITUB20155790A1 (it) 2017-05-20

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