CN113354986A - Navy blue colorant for ink-jet printing and preparation method thereof - Google Patents
Navy blue colorant for ink-jet printing and preparation method thereof Download PDFInfo
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- CN113354986A CN113354986A CN202110716541.4A CN202110716541A CN113354986A CN 113354986 A CN113354986 A CN 113354986A CN 202110716541 A CN202110716541 A CN 202110716541A CN 113354986 A CN113354986 A CN 113354986A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/30—Inkjet printing inks
- C09D11/32—Inkjet printing inks characterised by colouring agents
- C09D11/328—Inkjet printing inks characterised by colouring agents characterised by dyes
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/30—Inkjet printing inks
- C09D11/38—Inkjet printing inks characterised by non-macromolecular additives other than solvents, pigments or dyes
-
- 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
- D06P1/38—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 reactive dyes
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- 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
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- 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
- D06P1/6492—(Thio)urethanes; (Di)(thio)carbamic acid derivatives; Thiuramdisulfide
-
- 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
- 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
- D06P1/651—Compounds without nitrogen
- D06P1/65106—Oxygen-containing compounds
- D06P1/65131—Compounds containing ether or acetal groups
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- 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
Abstract
The invention provides a navy blue colorant for ink-jet printing, which comprises the following components in percentage by weight: 5-25% of active navy blue dye; 3-10% of amide compound cosolvent; ether compound cosolvent 1.5-5%; 5-35% of viscosity regulator; 0.01-10% of surface tension regulator; 0.1 to 10 percent of pH regulator; 0.01-1% of antibacterial agent; the balance of water. The active navy blue dye is applied to the preparation of the digital ink-jet printing liquid colorant, so that the color gamut value of digital industrial printing and dyeing is wider, and black with more hues is adjusted by color matching on the basis of navy blue in the production process of cotton fabrics, so that the digital industrial printing and dyeing is more flexible and variable, and the design and color are richer. Especially, when the jean is processed, the jean has gorgeous and various colors, is rich in colors, can be efficiently and quickly customized, and is flexible and various. And the dyeing depth is enough, the dyeing rate is high, and a large amount of sewage is avoided. The invention also relates to a preparation method of the navy colorant for ink-jet printing.
Description
Technical Field
The invention belongs to the technical field of textile printing and dyeing, and particularly relates to a navy blue colorant for ink-jet printing and a preparation method thereof.
Background
In recent years, the digital ink-jet printing technology has the advantages of simple production process, strong color expression, high printing precision, low environmental protection cost and the like, and is more and more widely applied to the textile printing and dyeing industry. With the digital ink-jet printing technology becoming an important new type of textile printing and dyeing processing, the quality requirements of domestic and foreign markets for finished textile products processed by the technology are higher and higher.
However, denim with huge consumption in the consumer market still cannot be processed by digital ink-jet printing and is still processed by the traditional printing process, so that various disadvantages of large sewage generation amount, high processing cost, insufficient flexibility in production and the like are caused. The main reason is that the denim mainly adopts navy blue, wherein the navy blue is divided into dark navy blue, light navy blue, various designs and colors and the like, and the navy blue has insufficient color gamut in a digital ink-jet printing processing scheme and cannot be processed by digital ink-jet printing at all. The traditional denim printing and dyeing scheme cannot adapt to the quality requirement of the rapid growth of the modern textile consumption market and the requirement of human beings on environmental protection.
Disclosure of Invention
The invention provides a dark blue dyeing agent of a liquid composition based on reactive dyes, aiming at solving the problems that the traditional denim printing and dyeing mode with high energy consumption and serious pollution in the prior art is not enough in the digital code-spraying printing color gamut value and cannot be processed, the denim printing and processing can be carried out by utilizing an ink-jet printing mode, the dyeing effect on cellulose fibers is good, and the comprehensive color fastness performance is excellent.
The invention is realized by the following technical scheme:
the invention provides a navy blue colorant for ink-jet printing, which comprises the following components in percentage by weight:
the active navy blue dye belongs to one of the active dyes, which is also called as reactive dye, and the molecular structure of the active dye has one or more than one active groups, and the active dye can react with fibers such as cotton, wool and the like in aqueous solution to form covalent bonds. The reactive dye is suitable for dyeing cellulose fiber, protein fiber and polyamide fiber, and has excellent wet fastness and level dyeing property. In addition, the reactive dye has bright color, complete color spectrum and higher washing fastness.
The reactive dye, which consists of a parent dye, a linking group and a reactive group, can form a strong covalent bond with the fiber when in use. When the conventional printing and dyeing process is adopted to dye denim, the dyeing utilization rate of the reactive dye is not high enough, generally 60-70%, a large amount of colored sewage is generated, the chroma is over a few thousand times, the COD value is generally 0.8-3 ten thousand ppm, and the COD value of concentrated wastewater is over 5 ten thousand ppm. In order to inhibit the charges on the surface of the fiber, the reactive dye consumes a considerable amount of electrolyte when in use, which not only increases the labor intensity, but also causes the chloride ion concentration in the wastewater to be as high as 10 to ten thousand ppm, thereby greatly increasing the difficulty of treating the dyeing wastewater of the reactive dye.
The navy blue colorant provided by the invention is added with an amide compound cosolvent, an ether compound cosolvent, a viscosity regulator, a surface tension regulator, a pH regulator and an antibacterial agent on the basis of the active navy blue dye. The amide compound cosolvent and the ether compound cosolvent can stabilize the liquid, the viscosity regulator can make the liquid have good stability, and the liquid is not easy to be layered and deteriorated after being placed for a long time; the pH regulator can effectively inhibit the hydrolysis of the reactive dye in water by regulating the pH value of the whole system, thereby prolonging the storage time of the colorant.
The navy blue colorant provided by the invention is suitable for being printed on cloth such as denim by adopting an ink-jet printing mode. Ink-jet printing, that is, digital printing technology, has the advantages of low energy consumption, accurate dye consumption, high pattern fineness and high production efficiency. However, the disadvantages of ink-jet printing are more pronounced if the reactive dyes are used directly for processing cloth, especially for processing denim. The existing ink-jet printing has the defects of insufficient production flexibility of black dye, low dyeing rate, insufficient color depth and the like, and the digital printing of the denim cannot be carried out by a low-energy-consumption and low-pollution method for producing and processing. The invention prepares the navy reactive dye into the ink for ink-jet printing, and can overcome the problems of the traditional process and insufficient color gamut of the ink-jet printing.
The navy blue colorant prepared by matching the active navy blue dye with other components can be printed and dyed on denim in an ink-jet printing mode. And on the basis of the active navy blue dye, more hues can be adjusted through color matching, and the color gamut of the navy blue is expanded, so that dark navy blue, light navy blue and various colors formed by combination can be printed on denim in an ink-jet mode.
In some embodiments, the amide compound co-solvent is one or more of urethane, urea, nicotinamide, acetamide. The cosolvent of the amide compound is nontoxic, odorless and environment-friendly, and is easily soluble in water. Compared with other amide compound cosolvents, the amide compound cosolvent can fully disperse the reactive dye, stabilize the state of the reactive navy blue dye, and ensure that the navy blue colorant forms a true solution system with stable system, and the navy blue colorant does not settle after being stored for a long time and does not precipitate dye.
In some embodiments, the ether-based compound co-solvent is one or more of triethylene glycol methyl ether, ethylene glycol ethyl ether, diethylene glycol butyl ether, diethylene glycol ethyl ether, ethylene glycol benzyl ether, and diethylene glycol monobutyl ether. The ether compound cosolvent can increase the solubility of insoluble components, is beneficial to the preparation and application of the navy blue colorant, is volatile in the subsequent steaming and color development process, does not influence dye-uptake, and does not generate wastewater.
In some embodiments, the amide compound co-solvent is urea and the ether compound co-solvent is triethylene glycol methyl ether. In the embodiment, the system stability of the navy blue colorant can be further improved by adopting the combination of urea and triethylene glycol-methyl ether as the cosolvent, so that the navy blue colorant forms a true solution system with stable system, and the navy blue colorant does not settle after being stored for a long time and does not precipitate dye.
In some embodiments, the mass ratio of the amide compound cosolvent to the ether compound cosolvent is 1-1.2: 0.5. By adopting the cosolvent with the proportion for matching, the ether compound cosolvent can help the dye components which cannot be helped by the amide compound cosolvent to dissolve, so that the active navy blue dye is more fully dissolved.
The embodiment of the disclosure adopts two cosolvents, namely an amide compound cosolvent and an ether compound cosolvent, and the two cosolvents are matched with each other for use, so that the liquid is more stable, and the active navy blue dye and the cosolvents form four types, namely soluble complex, organic molecule compound, association compound, soluble salt generated through double decomposition reaction and the like. By adopting the amide compound cosolvent and the ether compound cosolvent, the solubility of the active navy blue dye is increased by about 20 percent, and meanwhile, the concentration of the navy blue colorant is also increased by about 20 percent, so that the use of the navy blue colorant can be reduced in the production and processing process, the production cost is reduced, and the production efficiency is improved.
In some embodiments, the reactive navy blue dye is one or more of c.i. reactive black 39, c.i. reactive red 245, c.i. reactive orange 13, c.i. reactive blue 49, c.i. reactive yellow 95, c.i. reactive black 5. The reactive dye can be used for preparing navy colorant with various color layers, such as dark navy colorant, light navy colorant and the like.
As an example, when the active navy blue dye is prepared, the selected components are ground to prepare microparticles with the diameter of about 100-300 nanometers, and then the microparticles are uniformly mixed with other components in the navy blue dye in proportion and filtered by the grade of about 0.5 micrometer, so as to prepare the digital ink-jet printing liquid composition colorant based on the active navy blue dye.
In some embodiments, the pH adjusting agent is one or more of acetic acid, citric acid, disodium hydrogen phosphate, sodium dihydrogen phosphate, sodium hydroxide, sodium carbonate, diethanolamine, triethanolamine. The pH regulator is suitable for regulating the pH value of a system.
In some embodiments, the viscosity modifier is at least one of ethanol, ethylene glycol, diethylene glycol, N-propanol, isopropanol, propylene glycol, glycerol, polyethylene glycol, polypropylene glycol, pentanediol, cyclohexanol, 2-pyrrolidone, N-methyl-2-pyrrolidone, 1, 3-dimethylimidazolidinone.
In the embodiment, the polyalcohol is used as the viscosity regulator, so that the liquid has good stability, is not easy to delaminate and deteriorate after being placed for a long time, and has greatly improved moisture retention. Therefore, the service life of the nozzle of the ink-jet printer is prevented from being influenced in the digital printing process. The pyrrolidone viscosity regulator provided in the embodiment can make the rheological effect of the product more prominent, and can better adapt to the requirement of ink jet nozzle printing with higher working frequency.
In some embodiments, the antimicrobial agent is one or more of isothiazolinone, 1,3, 5-trihydroxyethyl-s-triazine, methylene bis thiocyanate, 2, -dibromo-cyanoacetamide.
In some embodiments, the surface tension modifier is at least one of sodium dodecylbenzene sulfonate, sodium dodecyl sulfate, naphthalene sulfonic acid formaldehyde condensate, cetyl trimethyl ammonium bromide, fluorinated ethylene glycol, ethylene oxide condensed hydrogenated castor oil, polyether modified polysiloxane, aralkyl modified polymethylalkylsiloxane, ethoxylated acetylenic diol, disodium lauryl sulfosuccinate monoester.
The present invention also provides a method for preparing a navy colorant for inkjet printing, comprising:
a. dissolving an amide compound cosolvent in water to obtain a first solution containing the amide compound cosolvent;
b. putting the active navy blue dye into the first solution and stirring;
c. adding a pH regulator to adjust the pH value to 8-9 to obtain a second solution;
d. adding the ether compound cosolvent into the second solution and stirring, and then sequentially adding the viscosity regulator, the surface tension regulator and the antibacterial agent and stirring;
e. and adjusting the pH value to 8-9 again to obtain a third solution, and filtering the third solution to obtain the navy blue colorant for ink-jet printing.
In the preparation process, an amide compound cosolvent and an ether compound cosolvent are added in a certain feeding sequence, the amide compound cosolvent is added firstly to prepare an amide compound aqueous solution, namely a first solution, and the reactive dye is added into the first solution, so that the reactive navy blue dye can be better dissolved, and the reactive dye does not agglomerate, agglomerate or settle in the dissolving process and reduces the dissolving time; then adding ether compound cosolvent to dissolve part of components in the active navy blue dye which cannot be dissolved by the amide compound cosolvent better.
Through the addition sequence of the cosolvent, the dissolution speed and the solubility of the active navy blue dye can be effectively accelerated, and the stability of a navy blue colorant system is improved.
Because the reactive navy blue dye is very easy to hydrolyze in water, and the hydrolysis rate of the reactive dye is the lowest when the pH value is between 8 and 9, the pH value is adjusted as soon as possible when the reactive dye is added, so that the hydrolysis of the reactive navy blue dye is prevented in the subsequent production time of 5 to 6 hours; meanwhile, when the active navy blue dye is hydrolyzed, the pH value of the aqueous solution is reduced, and the dye hydrolysis is accelerated due to the pH reduction, so the pH value is adjusted in the steps c and e.
As an example, step c specifically includes:
under the condition that the pH value is more than 9, adjusting the pH value to 8-9 by adopting sodium dihydrogen phosphate;
and under the condition that the pH value is less than 8, adjusting the pH value to 8-9 by adopting disodium hydrogen phosphate.
In this example, in the case where the pH is greater than 9 or less than 8, different pH regulators are used to adjust the pH, because the sodium dihydrogen phosphate is acidic in water and the disodium hydrogen phosphate is alkaline, so as to prepare for the second pH adjustment, a disodium hydrogen phosphate-sodium dihydrogen phosphate buffer system is formed in the navy colorant ink system, and the pH of the buffer system is relatively stable and does not change easily. .
As an example, the step e of adjusting the pH value again to between 8 and 9 to obtain a third solution specifically includes: and (3) adjusting the pH value to 8-9 again by adopting a sodium dihydrogen phosphate-disodium hydrogen phosphate buffer solution to obtain a third solution, wherein the adding amount of the sodium dihydrogen phosphate-disodium hydrogen phosphate buffer solution is 0.5 percent of the total weight of the materials, and the pH value is 8.8.
In the embodiment, sodium dihydrogen phosphate is used when the pH value is greater than 9 and disodium hydrogen phosphate is used when the pH value is less than 8 in step e, so that the characteristic that sodium dihydrogen phosphate is acidic in water can be utilized, and the pH value is reduced to 8-9 when the pH value is greater than 9; and the characteristic that the disodium hydrogen phosphate is alkaline in water is utilized, and the pH value is increased to 8-9 when the pH value is less than 8. Thus, the pH value of the navy colorant can be more stable, and the hydrolysis effect of the navy colorant is reduced.
Through the process of adjusting the pH value twice, the hydrolysis phenomenon of the reactive dye in water can be effectively inhibited, and the storage time of the colorant is prolonged from 11-12 months to 16-17 months.
In some embodiments, the stirring speed when the reactive navy blue dye is added in the step b is 200r/min to 300 r/min. By adopting the rotating speed range, the reactive dye can be fully dispersed and uniformly stirred. If the rotating speed is lower than 200r/min, the active navy blue dye is easy to agglomerate and settle, and if the rotating speed is higher than 300r/min, the active navy blue dye is easy to foam, the foam is not uniform in stirring, and too much foam overflows the stirring kettle. As an example, the reactive navy blue dye needs to be added slowly, and after the reactive dye is added completely, the pH value is adjusted.
In some embodiments, after the pH value is adjusted in step c, the rotation speed is kept unchanged and stirring is carried out for 3 to 4 hours. The stirring speed can fully dissolve the active navy blue dye. If the stirring time is less than 3 hours, the active navy blue dye can not be fully dissolved and is easy to settle; if the stirring time is longer than 4 hours, time is wasted, and the production efficiency is reduced.
In some embodiments, the stirring time for adding the ether compound cosolvent in the step d is 1-2 h, the stirring time for adding the viscosity regulator, the surface tension regulator and the antibacterial agent is 1-2 h, and the stirring speed is 200-300 r/min. If the stirring speed is lower than 200r/min, the stirring is insufficient, the upper surface tension viscosity and the lower surface tension viscosity are inconsistent, and if the stirring speed is higher than 300r/min, the foaming is generated, the stirring is not uniform, and the foaming overflows.
In some embodiments, the third solution is filtered on a 0.25 to 3 micron scale to provide a colorant for ink jet printing. If the filtration grade is lower than 0.25 micron, the production cost is increased, and the finer the filter element is, the higher the price is; if the filtration grade is higher than 3 microns, the jet orifice can be blocked in the digital ink-jet printing process, and the production is influenced.
The invention has the beneficial effects that:
the active navy blue dye is applied to the manufacture of the digital ink-jet printing liquid colorant, so that the color gamut value of digital industrial printing and dyeing is wider, and black with more hues is adjusted by color matching on the basis of navy blue in the production process of cotton fabrics, so that the digital industrial printing and dyeing is more flexible and changeable, and the design and color are richer. Especially, when the jean is processed, the jean has gorgeous and various colors, is rich in colors, can be efficiently and quickly customized, and is flexible and various. And the dyeing depth is enough, the dyeing rate is high, and a large amount of sewage is avoided.
The conventional denim processing and dyeing mainly comprises jig dyeing and dip dyeing, the production period is long, a large production space is needed, after the liquid composition navy blue dye based on the reactive dye is added, the digital industrial production of the denim can be realized, the processing period is only one tenth of that of the conventional reactive dip dyeing and jig dyeing, the overall production efficiency can be greatly improved, and the production capacity of the overall printing production line can reach 25-120 m/min by matching with a high-speed digital ink-jet printing machine.
By using the amide compound cosolvent and the ether compound cosolvent in a matching manner, the liquid is more stable, the dye solubility is increased by about 20%, and meanwhile, the concentration of the coloring agent is also increased by about 20%, so that the use of the coloring agent can be reduced in the production and processing process, the production cost is reduced, and the production efficiency is improved.
In the preparation process, the amide compound cosolvent and the ether compound cosolvent are added in a certain feeding sequence, so that the dissolving speed and the solubility of the dye can be effectively accelerated, and the stability of the liquid colorant is improved; and the process of adjusting the pH twice can effectively inhibit the hydrolysis phenomenon of the reactive dye in water, and increase the storage time of the colorant, so that the storage time of the colorant is prolonged from 11-12 months to 16-17 months.
The ink-jet printing cloth processed by the colorant has high color fastness, good processing and taking fastness, repeated washing resistance, steaming and boiling fastness resistance and far better performance than the prior digital ink-jet printing product based on reactive dye. The performance parameters of the printed fabrics are listed in table 1.
TABLE 1 Performance parameters of printed cloth
By changing the types, components and proportions of the dye and the additive, specific products with different colors and different physical parameter states can be respectively prepared, and the ink can be respectively adapted to the working requirements of ink-jet printing heads with different types and models, ink-jet printers with different models and various color requirements, so that the aim of normally printing ink-jet printing can be fulfilled.
Detailed Description
The present invention will be described in further detail with reference to specific examples. Table 2 shows the details of the reactive dyes used in the examples.
TABLE 2 information on the respective reactive dyes
Example 1
A navy blue colorant for ink-jet printing comprises the following components in percentage by weight: 17% of active navy blue dye; 5% of urea; 2.5 percent of triethylene glycol-methyl ether; 20% of ethanol; 0.5 percent of sodium dodecyl benzene sulfonate; 0.5 percent of disodium hydrogen phosphate; isothiazolinone 0.8%; the balance of water;
wherein, the active navy blue dye comprises C.I. active black 39 and C.I. active red 245, and the C.I. active black 39 is 15 percent; c.i. reactive red 245 was 2%.
Example 2
A navy colorant for ink-jet printing, wherein urea is 3%; the remaining components were the same as in example 1.
Comparative example 1
A navy blue colorant for ink-jet printing, wherein the content of urea is 2.5 percent, and the rest components are the same as those in the embodiment 1; comparative example 2
A navy blue colorant for ink-jet printing, wherein the content of urea is 7.5 percent, and the rest components are the same as those in the embodiment 1; comparative example 3
A navy blue colorant for ink-jet printing comprises the following components in percentage by weight: 17% of active navy blue dye; 20% of ethanol; 0.5 percent of sodium dodecyl benzene sulfonate; 0.5 percent of disodium hydrogen phosphate; isothiazolinone 0.8%; the balance of water;
wherein, the active navy blue dye comprises C.I. active black 39 and C.I. active red 245, and the C.I. active black 39 is 15 percent; c.i. reactive red 245 was 2%.
Comparative example 4
A navy blue colorant for ink-jet printing comprises the following components in percentage by weight: 17% of active navy blue dye; 5% of urea; 0.5 percent of sodium dodecyl benzene sulfonate; 0.5 percent of disodium hydrogen phosphate; isothiazolinone 0.8%; the balance of water;
wherein, the active navy blue dye comprises C.I. active black 39 and C.I. active red 245, and the C.I. active black 39 is 15 percent; c.i. reactive red 245 was 2%.
Comparative example 5
A navy blue colorant for ink-jet printing comprises the following components in percentage by weight: 17% of active navy blue dye; 5% of urea; 2.5 percent of triethylene glycol-methyl ether; 0.5 percent of sodium dodecyl benzene sulfonate; 0.5 percent of disodium hydrogen phosphate; isothiazolinone 0.8%; the balance of water;
wherein, the active navy blue dye comprises C.I. active black 39 and C.I. active red 245, and the C.I. active black 39 is 15 percent; c.i. reactive red 245 was 2%.
Example 3
A navy blue colorant for ink-jet printing comprises the following components in percentage by weight: 17% of active navy blue dye; 5% of urethane; 2.5 percent of ethylene glycol ethyl ether; 20% of ethanol; 0.5 percent of sodium dodecyl benzene sulfonate; 0.5 percent of disodium hydrogen phosphate; isothiazolinone 0.8%; the balance of water;
wherein, the active navy blue dye comprises C.I. active black 39 and C.I. active red 245, and the C.I. active black 39 is 15 percent; c.i. reactive red 245 was 2%.
The data parameters for each example are shown in Table 3 by performing performance tests on the navy colorant prepared in examples 1-2 and comparative examples 1-4:
TABLE 3 performance parameters for the navy colorants prepared in examples 1-2 and comparative examples 1-4
As can be seen from the data in Table 3, when the ratio of urea to triethylene glycol methyl ether in examples 1 and 2 is 1-1.2: 0.5, the prepared navy blue colorant solution is clear and has no sedimentation, the viscosity is not changed basically after the navy blue colorant solution is placed for 7 days, slight change can be considered to be caused by equipment error, and the solution is still clear and has no sedimentation after the navy blue colorant solution is placed for 7 days.
When the mass ratio of the amide compound co-solvent to the ether compound co-solvent in comparative example 1 is less than 1:0.5, the viscosity of the prepared navy colorant decreases after standing for 7 days, and the surface tension increases after standing for 7 days, and the solution becomes cloudy, has sedimentation, and the navy colorant system is unstable.
When the mass ratio of the amide compound cosolvent to the ether compound cosolvent in comparative example 2 is higher than 1.2:0.5, the viscosity of the prepared navy colorant is reduced after the colorant is placed for 7 days, the surface tension is increased and the amplitude is large after the colorant is placed for 7 days, and the solution becomes turbid and has sedimentation, so that the navy colorant system is unstable.
The navy blue colorant prepared in the comparative example 3 has viscosity, and does not add an amide compound cosolvent and an ether compound cosolvent, so that the solution is turbid, the viscosity is reduced and has larger amplitude after the solution is placed for 7 days, the surface tension is increased and has larger amplitude after the solution is placed for 7 days, the solution becomes turbid and has sedimentation, and the navy blue colorant system is very unstable.
The navy blue colorant prepared by the comparative example 4 has large viscosity and turbid solution without adding ether compound cosolvent, the viscosity is reduced and the amplitude is large after the colorant is placed for 7 days, the surface tension is increased after the colorant is placed for 7 days, the solution is still turbid and has sedimentation, and the navy blue colorant system is very unstable.
The navy blue colorant prepared in the comparative example 5 has not been added with a viscosity regulator, has too low viscosity, has a large reduction in viscosity after being left for 7 days, has a large increase in surface tension after being left for 7 days, and is very unstable.
The viscosity and the surface tension of the navy blue colorant prepared in the example 3 are in a reasonable range, the viscosity and the surface tension are not changed greatly after the navy blue colorant is placed for 7 days, the solution is clear and has no sedimentation, and the system is stable.
Example 4
A process for the preparation of navy colorants, wherein the components are as in example 1, by a process comprising:
a. dissolving urea in water to obtain a first solution;
b. putting the active navy blue dye into the first solution and stirring;
c. adjusting the pH value to be between 8 and 9, and adjusting the pH value to be between 8 and 9 by adopting sodium dihydrogen phosphate under the condition that the pH value is more than 9; under the condition that the pH value is less than 8, adjusting the pH value to 8-9 by adopting disodium hydrogen phosphate, and stirring for 3-4 hours to obtain a second solution;
d. adding triethylene glycol-methyl ether into the second solution, stirring for 1-2 hours, then sequentially adding ethanol, 0.5% of sodium dodecyl benzene sulfonate and isothiazolinone, and stirring for 1-2 hours, wherein the stirring speed is 200 r/min-300 r/min;
e. and adjusting the pH value to 8-9 again by adopting a sodium dihydrogen phosphate-disodium hydrogen phosphate buffer solution, wherein the adding amount of the sodium dihydrogen phosphate-disodium hydrogen phosphate buffer solution is 0.5 percent of the total weight of the materials, and the pH value is 8.8 to obtain a third solution, and filtering the third solution to obtain the navy blue colorant for ink-jet printing.
Example 5
A process for the preparation of navy colorants, wherein the components are as in example 1, by a process comprising:
a. dissolving urea in water to obtain a first solution;
b. putting the active navy blue dye into the first solution and stirring;
c. adjusting the pH value to 8-9 by using citric acid, and stirring for 3-4 h to obtain a second solution;
d. adding triethylene glycol-methyl ether into the second solution, stirring for 1-2 hours, then sequentially adding ethanol, 0.5% of sodium dodecyl benzene sulfonate and isothiazolinone, and stirring for 1-2 hours, wherein the stirring speed is 200 r/min-300 r/min;
e. and adjusting the pH value to 8-9 again by adopting a sodium dihydrogen phosphate-disodium hydrogen phosphate buffer solution, wherein the adding amount of the sodium dihydrogen phosphate-disodium hydrogen phosphate buffer solution is 0.5 percent of the total weight of the materials, and the pH value is 8.8 to obtain a third solution, and filtering the third solution to obtain the navy blue colorant for ink-jet printing.
Comparative example 6
A process for the preparation of navy colorants, wherein the components are as in example 1, by a process comprising:
a. dissolving urea in water to obtain a first solution;
b. putting the active navy blue dye into the first solution and stirring;
c. adjusting the pH value to be between 8 and 9, and adjusting the pH value to be between 8 and 9 by adopting sodium dihydrogen phosphate under the condition that the pH value is more than 9; under the condition that the pH value is less than 8, adjusting the pH value to 8-9 by adopting disodium hydrogen phosphate, and stirring for 3-4 hours to obtain a second solution;
d. adding triethylene glycol-methyl ether into the second solution, stirring for 1-2 hours, then sequentially adding ethanol, 0.5% of sodium dodecyl benzene sulfonate and isothiazolinone, and stirring for 1-2 hours, wherein the stirring speed is 200 r/min-300 r/min;
e. filtering to obtain the navy blue colorant for ink-jet printing.
The data parameters for each example are shown in table 4 by performing performance tests on the navy colorant prepared in examples 4-5 and comparative example 6:
TABLE 4 performance parameters for the navy colorants prepared in examples 4-5 and comparative example 6
As can be seen from Table 4, in example 4, when the pH value is adjusted for the first time, sodium dihydrogen phosphate is used for adjusting the pH value to 8-9 under the condition that the pH value is greater than 9; and under the condition that the pH value is less than 8, adjusting the pH value to 8-9 by adopting disodium hydrogen phosphate, adjusting the pH value to 8-9 by adopting a sodium dihydrogen phosphate-disodium hydrogen phosphate buffer solution during the second pH value adjustment, and keeping the pH value of the finally prepared navy blue colorant stable after the navy blue colorant is placed for 7 days.
Example 5 the final navy colorant was allowed to stand for 7 days with only citric acid for the first pH adjustment, with a slight pH drop; comparative example 6 only when the pH value is adjusted for the first time, sodium dihydrogen phosphate is adopted to adjust the pH value to 8-9 under the condition that the pH value is more than 9; and under the condition that the pH value is less than 8, adjusting the pH value to 8-9 by adopting disodium hydrogen phosphate without carrying out secondary pH value adjustment, and greatly reducing the pH value after the finally prepared navy blue colorant is placed for 7 days.
It can be seen that the navy colorant prepared by the method of example 4 can maintain a stable pH after 7 days.
Claims (10)
1. An azure colorant for ink-jet printing, which is characterized by comprising the following components in percentage by weight:
2. the navy blue colorant according to claim 1, wherein the amide compound cosolvent is one or more of urethane, urea, nicotinamide and acetamide.
3. The navy blue colorant according to claim 2, wherein the ether-based compound cosolvent is one or more of triethylene glycol methyl ether, ethylene glycol ethyl ether, diethylene glycol butyl ether, diethylene glycol ethyl ether, ethylene glycol benzyl ether, and diethylene glycol monobutyl ether.
4. The navy blue colorant according to claim 3, wherein the amide compound cosolvent is urea and the ether compound cosolvent is triethylene glycol methyl ether.
5. The navy blue colorant according to any one of claims 1 to 4, wherein the mass ratio of the amide compound cosolvent to the ether compound cosolvent is 1-1.2: 0.5.
6. The navy blue colorant according to any one of claims 1 to 4, wherein the pH regulator is one or more of acetic acid, citric acid, disodium hydrogen phosphate, sodium dihydrogen phosphate, sodium hydroxide, sodium carbonate, diethanolamine, triethanolamine.
7. A process for preparing the navy colorant of any one of claims 1 to 6, comprising:
a. dissolving an amide compound cosolvent in water to obtain a first solution containing the amide compound cosolvent;
b. putting the active navy blue dye into the first solution and stirring;
c. adding a pH regulator to adjust the pH value to 8-9 to obtain a second solution;
d. adding an ether compound cosolvent into the second solution and stirring, and then sequentially adding a viscosity regulator, a surface tension regulator and an antibacterial agent and stirring;
e. and adjusting the pH value to 8-9 again to obtain a third solution, and filtering the third solution to obtain the navy blue colorant for ink-jet printing.
8. The method according to claim 7, wherein said step c specifically comprises:
under the condition that the pH value is more than 9, adjusting the pH value to 8-9 by adopting sodium dihydrogen phosphate;
and under the condition that the pH value is less than 8, adjusting the pH value to 8-9 by adopting disodium hydrogen phosphate.
9. The method of claim 7, wherein the step c is performed by stirring for 3 to 4 hours while maintaining the rotation speed after the pH value is adjusted.
10. The method according to claim 7, wherein the stirring time for adding the ether compound cosolvent in the step d is 1-2 h, the stirring time for adding the viscosity modifier, the surface tension modifier and the antibacterial agent is 1-2 h, and the stirring speed is 200-300 r/min.
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