CN112920643A

CN112920643A - Water-based dye ink and application thereof

Info

Publication number: CN112920643A
Application number: CN202110117839.3A
Authority: CN
Inventors: 黄新红; 曾辉
Original assignee: Zhuhai Ninestar Management Co Ltd
Current assignee: Zhuhai Ninestar Management Co Ltd
Priority date: 2021-01-28
Filing date: 2021-01-28
Publication date: 2021-06-08

Abstract

The application provides water-based dye ink and application thereof, and relates to the technical field of printing. The application provides a water-based dye ink, which comprises the following components in percentage by weight: 5 to 30 percent of dye color paste, 11 to 18 percent of dispersion stabilizer, 0.5 to 2 percent of surfactant, 10 to 30 percent of solvent, 0.1 to 0.5 percent of functional assistant and the balance of water; wherein the dispersion stabilizer includes a polyol having a plurality of hydroxyl groups. The dye ink can disperse and stabilize the pigment in the pigment ink, and prevent the pigment of the pigment ink from coagulating and layering; therefore, the dye ink and the pigment ink have excellent compatibility, the ink has good fluency, the service life of the printing head is longer than that of the common ink, and the cost of ink-jet printing is favorably reduced.

Description

Water-based dye ink and application thereof

Technical Field

The application relates to ink, in particular to water-based dye ink and application thereof, and belongs to the technical field of printing.

Background

Inkjet printing has the characteristics of being easy to miniaturize, accelerate and colorize, and also has the characteristics of being silent and quiet, and the like, and is rapidly developed in recent years, and the application field is continuously expanded, and the application of the inkjet printing technology is expanded from the simple printing field to the advanced fields of electronic manufacturing, life science and the like. As inkjet printing is more widely used, more users with different demands are added to the inkjet user group, and thus, higher demands are made on inks to which the inkjet printing apparatus is adapted.

The inkjet ink suitable for inkjet printing can be divided into dye ink and pigment ink, wherein the colorant of the dye ink is a dye dissolved in water or an organic solvent, and dye molecules are completely dissolved in the solution, so that a wide color gamut can be maintained, and rich and bright colors and excellent and superior image quality can be realized; the pigment ink is an aggregate of molecules, and the colorant of the pigment ink is a water-insoluble pigment suspended in water by a dispersant, and can provide vivid and bright colors, clear and sharp black, and excellent durability. For the general users, the use cost of pigment ink is high, and they prefer to use dye ink which is economical. In the prior art, most of original ink in an original ink box for ink-jet printing is pigment ink, and after the original pigment ink in a newly purchased printer is used up, economic and practical dye ink is continuously filled in the ink box, so that a lot of use cost can be saved, but because the compatibility of the dye ink and the pigment ink in the original ink box is poor, the phenomenon of nozzle blockage easily occurs after long-time standby; or after the dye ink and the pigment ink in the original ink box are mixed for use, the incompatible situations such as white and black lack of printing, fuzzy handwriting and the like are easy to occur in the printing process. Therefore, it is highly desirable to provide a dye ink that can improve compatibility with the original pigment ink.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides the water-based dye ink capable of being mixed and compatible with the pigment ink and the application thereof, and when the water-based dye ink and the pigment ink are mixed and used, the smoothness of printing can be ensured, the phenomenon of blockage of a printing nozzle is reduced or avoided, and the cost of ink jet printing is favorably reduced.

According to one aspect of the application, an aqueous dye ink is provided, which comprises the following components in percentage by weight:

5 to 30 percent of dye color paste, 11 to 18 percent of dispersion stabilizer, 0.5 to 2 percent of surfactant, 10 to 30 percent of solvent, 0.1 to 0.5 percent of functional assistant and the balance of water;

wherein the dispersion stabilizer includes a polyol having a plurality of hydroxyl groups.

In one possible embodiment, the aqueous dye ink comprises the following components in percentage by weight:

10 to 30 percent of dye color paste, 11 to 15 percent of dispersion stabilizer, 0.5 to 1.5 percent of surfactant, 12 to 20 percent of solvent, 0.1 to 0.3 percent of functional assistant and the balance of water;

In one possible embodiment, the polyol having a plurality of hydroxyl groups includes at least one of trimethylolpropane, trimethylolethane, or neopentyl glycol.

In one possible embodiment, the polyol having a plurality of hydroxyl groups is trimethylolpropane.

In one possible embodiment, the surfactant comprises a nonionic surfactant.

In one possible embodiment, the surfactant comprises an acetylenic diol surfactant and/or a silicon-based surfactant.

In one possible embodiment, the surfactant is an acetylenic diol surfactant. The acetylenic diol surfactant comprises an acetylenic diol-based surfactant.

In one possible embodiment, the acetylenic diol surfactant comprises at least one of 2,4,7, 9-tetramethyl-5-decyne-4, 7-diol, 3, 6-dimethyl-4-octyne-3, 6-diol, 3, 5-dimethyl-1-hexyne-3-ol.

In one possible embodiment, the solvent comprises a water-soluble organic solvent comprising at least one of a polyol and an alcohol ether.

In one possible embodiment, the polyol comprises at least one of ethylene glycol, propylene glycol, glycerol, 1, 2-hexanediol, 1, 2-propanediol, diethylene glycol, and triethylene glycol;

the alcohol ether includes at least one of triethylene glycol monobutyl ether, ethylene glycol monopropyl ether, ethylene glycol isopropyl ether, ethylene glycol monobutyl ether, ethylene glycol isobutyl ether, propylene glycol monomethyl ether, propylene glycol monoethyl ether, propylene glycol monopropyl ether, propylene glycol monobutyl ether, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monopropyl ether, diethylene glycol monobutyl ether, dipropylene glycol monomethyl ether, dipropylene glycol monoethyl ether and dipropylene glycol monopropyl ether.

In one possible embodiment, the dye paste comprises reactive dyes and/or direct dyes.

In one possible embodiment, the reactive dye includes at least one of a reactive red dye, a reactive yellow dye, a reactive blue dye, and a reactive black dye;

the direct dye includes at least one of a direct yellow dye, a direct blue dye, a direct violet dye, and a direct black dye.

In one possible embodiment, the functional assistant comprises at least one of a bactericide and a preservative.

According to another aspect of the present application there is provided the use of an aqueous dye ink as hereinbefore described in ink jet printing.

In one possible embodiment, when the aqueous dye ink is applied to the field of inkjet printing, the aqueous dye ink may be mixed with a raw inkjet pigment ink for use.

The invention obtains the water-based dye ink which can be compatible with the original ink-jet pigment ink by limiting the components and the proportion of the components for forming the water-based dye ink. The polyol dispersion stabilizer with a plurality of hydroxyl groups added in the water-based dye ink has a certain synergistic effect with components such as dye color paste, a surfactant, a solvent, a functional assistant and the like in the dye ink, and the components have good compatibility, particularly, the polyol dispersion stabilizer with a plurality of hydroxyl groups can disperse and stabilize pigment in the pigment ink, prevent the pigment of the pigment ink from coagulating and layering, and further ensure that the water-based dye ink and the pigment ink have excellent compatibility. Therefore, when the water-based dye ink and the pigment ink are mixed and printed, the nozzle cannot be blocked, or the printer can be kept from being blocked by the ink in the nozzle in a standby state for a long time, namely, the incompatibility condition does not occur, meanwhile, the smoothness of the dye ink is better, and the service life of the printing head can be obviously prolonged compared with the existing ink.

Therefore, the cost of ink-jet printing can be obviously reduced by using the water-based dye ink for ink-jet printing, and the problem of incompatibility after the dye ink is replaced by an ink-jet printer using pigment ink is relieved.

Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.

Detailed Description

In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be clearly and completely described below with reference to the embodiments of the present application, and it should be apparent that the described embodiments are some but not all of the embodiments of the present application. All other embodiments obtained by those skilled in the art without any creative effort based on the technical solutions and the given embodiments provided in the present application belong to the protection scope of the present application. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.

The endpoints of the ranges and any values disclosed herein are not limited to the precise range or value, and such ranges or values should be understood to encompass values close to those ranges or values. For numerical ranges, one or more new numerical ranges may be obtained by combining the individual values, or by combining the individual values.

It should be noted that the term "and/or"/"used herein is only one kind of association relationship describing associated objects, and means that there may be three relationships, for example, a and/or B, and may mean: a exists alone, A and B exist simultaneously, and B exists alone. As used in the examples of this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

In the description of the present application, use of the term "at least one of," "at least one of," or other like terms to connote any combination of items listed. For example, if item A, B is listed, the phrase "at least one of A, B" means only a; only B; or A and B. In another example, if item A, B, C is listed, the phrase "at least one of A, B, C" means a only; or only B; only C; a and B (excluding C); a and C (excluding B); b and C (excluding A); or A, B and C. Item a may comprise a single element or multiple elements. Item B may comprise a single element or multiple elements. Item C may comprise a single element or multiple elements.

In some embodiments of the present application, there is provided an aqueous dye ink comprising, in weight percent:

According to the technical scheme provided by the embodiment of the invention, when the water-based dye ink is used for printing, the water-based dye ink can be mixed with the original ink-jet pigment ink for use, the conditions of incompatibility, such as white ink exposure and lack of ink, fuzzy handwriting, nozzle blockage and the like, can be basically avoided, and the problem of incompatibility after dye ink is replaced by an ink-jet printing device using the pigment ink can be relieved.

Due to the special composition of the water-based dye ink, the pigment in the pigment ink can be dispersed and stabilized, and the pigment of the pigment ink is prevented from being coagulated and layered, so that the water-based dye ink and the pigment ink have excellent compatibility; therefore, when the water-based dye ink and the pigment ink are mixed and printed, the nozzle cannot be blocked, or the ink in the nozzle cannot block the nozzle when the printer is in a standby state for a long time. The inventors have analyzed based on this phenomenon and considered that it is possible to: the aqueous dye ink improves the compatibility between the dye ink and the pigment ink, improves the stability of the dye ink, ensures that the dye ink has good fluency, and is beneficial to prolonging the service life of a printing head under the condition of mutual cooperation and matching of proper and proper dye color paste, dispersion stabilizer, surfactant, solvent functional assistant and water in the functions of the raw material components and mutual restriction and matching among proportions. And particularly, the aqueous dye ink fully exerts the self properties of solubility and the like by adding the dispersion stabilizer of the polyhydric alcohol with a plurality of hydroxyl groups with specific content, can disperse and stabilize the pigment in the pigment ink, prevents the pigment of the pigment ink from coagulating and layering, enables the pigment to be stably dissolved and dispersed in a mixed ink system, enables the mixed ink system to be more exquisite and has better compatibility effect.

Herein, percentages, ratios or parts referred to are by weight unless otherwise indicated. For example, the dye color paste is 5 to 30 percent, and can be expressed as 5 to 30 percent or 5 to 30 percent by weight of the dye color paste.

Herein, the percentages (%) refer to the weight percentage relative to the composition, unless otherwise specified. For example, the aqueous dye ink comprises 5-30 wt% of dye color paste, 11-18 wt% of dispersion stabilizer, 0.5-2 wt% of surfactant, 10-30 wt% of solvent, 0.1-0.5 wt% of functional assistant, and the balance of water, based on the total weight of the above components in the aqueous dye ink, wherein the sum of the contents of the components is 100%.

In some implementations, the water in the aqueous dye ink can be deionized water.

According to the embodiment of the application, the aqueous dye ink comprises 5-30 wt% of dye paste, which may be, for example, 5%, 6%, 8%, 10%, 12%, 15%, 16%, 18%, 20%, 22%, 25%, 28%, 30% or any value in the range formed by any two of these points, which is typical but not limiting.

According to the present embodiment, the aqueous dye ink includes a dispersion stabilizer in an amount of 11% to 18% by weight, and may be, for example, typically but not limited to, 11%, 12%, 13%, 14%, 15%, 16%, 17%, 18% by weight, and any value in a range of any two of these values.

According to the embodiment of the application, the aqueous dye ink comprises 0.5-2% by weight of surfactant, and typically, but not by way of limitation, the amount of surfactant may be, for example, 0.5%, 0.6%, 0.8%, 1%, 1.2%, 1.5%, 1.8%, 2%, or any value in a range formed by any two of these points.

According to the present embodiment, the aqueous dye ink includes a solvent in an amount of 10% to 30% by weight, and may be, for example, 10%, 12%, 15%, 18%, 20%, 22%, 23%, 24%, 25%, 26%, 27%, 28%, 29%, 30% by weight, and any value in a range of any two of these values, which are typical but not limiting.

According to the embodiment of the application, the aqueous dye ink comprises 0.1-0.5 wt% of the functional assistant, and typically, but not limited to, for example, the functional assistant can be 0.1%, 0.15%, 0.2%, 0.25%, 0.3%, 0.35%, 0.4%, 0.5% and any value in the range formed by any two of the above points.

According to some embodiments of the present invention, the water-based dye ink can be prepared with good compatibility, good fluency and stable performance by adjusting the types and proportions of the raw material components and coordinating with other components and making the components within the above range. Specifically, the components in the aqueous dye ink are determined by comprehensively considering the contribution of the raw material components to the performance indexes of the dye ink, such as compatibility, stability, cooperativity of the whole system and the like, and the synergistic cooperation of the dye color paste, the dispersion stabilizer, the surfactant, the solvent functional auxiliary agent and water in the specific content balances various performances, so that the prepared aqueous dye ink has good compatibility and better fluency, and the cost can be reduced while the performance indexes are achieved.

In some embodiments, the aqueous dye ink comprises the following components in weight percent: 10 to 30 percent of dye color paste, 11 to 15 percent of dispersion stabilizer, 0.5 to 1.5 percent of surfactant, 12 to 25 percent of solvent, 0.1 to 0.3 percent of functional assistant and the balance of water; wherein the dispersion stabilizer includes a polyol having a plurality of hydroxyl groups. In some embodiments, the aqueous dye ink comprises the following components in weight percent: 15 to 25 percent of dye color paste, 11 to 14 percent of dispersion stabilizer, 0.5 to 1 percent of surfactant, 12 to 20 percent of solvent, 0.1 to 0.2 percent of functional assistant and the balance of water; wherein the dispersion stabilizer includes a polyol having a plurality of hydroxyl groups.

The content of each component in the water-based dye ink is reasonably adjusted and optimized, the synergistic cooperation effect among the components is fully exerted, the compatibility or the comprehensive performance of the dye ink and the pigment ink is further improved, and the production cost of the ink is reduced.

The polyol having a plurality of hydroxyl groups is used as a dispersion stabilizer in an ink system, and can stabilize the substance in the dispersion system, make the system uniform, disperse and stabilize the pigment in the pigment ink, and prevent the pigment of the pigment ink from coagulating and delaminating. In order to keep the physicochemical properties of the entire system as uniform as possible, the dispersion stabilizer is preferably a polyol having a plurality of hydroxyl groups, and may be, for example, a polyol having two, three or more hydroxyl groups, and more preferably a polyol having three hydroxyl groups.

Specifically, in some embodiments, the polyol having a plurality of hydroxyl groups includes at least one of Trimethylolpropane (TMP), trimethylolethane, or neopentyl glycol. For example, the polyol having a plurality of hydroxyl groups may be Trimethylolpropane (TMP), trimethylolethane, neopentyl glycol, or a mixture of any two or more of the above polyols in any ratio. Preferably, in some embodiments, the polyol having a plurality of hydroxyl groups is trimethylolpropane.

When trimethylolpropane, trimethylolethane or neopentyl glycol is selected as a dispersion stabilizer, particularly when trimethylolpropane is selected, the dispersion stabilizer has excellent solubility or cosolvent, can enhance the combination between ink and a medium, can better disperse and stabilize the pigment in the pigment ink, and improves the compatibility of the dye ink and the pigment ink.

In some embodiments, the surfactant comprises a nonionic surfactant.

In some embodiments, the surfactant comprises at least one of an acetylenic diol surfactant, a silicon-based surfactant. Preferably, in some embodiments, the surfactant is an acetylenic diol surfactant. The acetylenic diol surfactant comprises an acetylenic diol-based surfactant.

Specifically, in some embodiments, the acetylene glycol-based surfactant comprises at least one of 2,4,7, 9-tetramethyl-5-decyne-4, 7-diol, 3, 6-dimethyl-4-octyne-3, 6-diol, 3, 5-dimethyl-1-hexyne-3-ol. More specifically, the acetylene glycol-based surfactant may be at least one selected from the group consisting of 104, 82, 465 and 4859 (available from Air Products, ltd., usa) in the Surfynol series, and particularly, 104 and 465 in the Surfynol series may be used.

In addition, in other embodiments, the surfactant is not limited to the above-mentioned ones, and other types of surfactants may be used in the case of satisfying requirements such as printing smoothness or compatibility of the aqueous dye ink, and will not be described in detail herein.

The surfactant can serve as a surface tension adjusting agent, and according to the embodiment of the present invention, the surfactant may be a nonionic surfactant, and further, the nonionic surfactant may be at least one selected from a silicon-based surfactant, an acetylene glycol surfactant, and the like. When the silicon surfactant and the alkynediol surfactant are selected, especially when the alkynediol surfactant is selected, the compatibility of the water-based dye ink and the pigment ink is better, the printing smoothness is better, and the comprehensive performance of an ink system is better.

In some embodiments, the solvent comprises a water-soluble organic solvent comprising at least one of a polyol and an alcohol ether. For example, the aqueous organic solvent may be a polyhydric alcohol, an alcohol ether, or a mixture of a polyhydric alcohol and an alcohol ether, that is, the polyhydric alcohol and the alcohol ether may be used alone or in combination. Preferably, the water-soluble organic solvent is a mixture of polyhydric alcohol and alcohol ether.

According to the water-based dye ink provided by the embodiment of the invention, the solvent is a water-soluble organic solvent, namely a solvent which can be mixed with water, for example, an alcohol or alcohol ether organic solvent can be selected, and particularly, the solvent at least comprises two or more alcohol or alcohol ether organic solvents is selected as the solvent, so that trimethylolpropane in the formula can be reasonably matched with the solvent, the dye ink has good compatibility, and the printing smoothness is excellent.

In some embodiments, the alcohol is selected from polyols, and specifically, the polyol includes at least one of ethylene glycol, propylene glycol, glycerol (1,2, 3-glycerol, also known as glycerin), 1, 2-hexanediol, 1, 2-propanediol, diethylene glycol, and triethylene glycol. Further, in some embodiments, the polyols include glycerol and 1, 2-hexanediol.

In some embodiments, the alcohol ether is selected from low alkyl ethers of polyhydric alcohols, specifically, the alcohol ether includes at least one of triethylene glycol monobutyl ether, ethylene glycol monopropyl ether, ethylene glycol isopropyl ether, ethylene glycol monobutyl ether, ethylene glycol isobutyl ether, propylene glycol monomethyl ether, propylene glycol monoethyl ether, propylene glycol monopropyl ether, propylene glycol monobutyl ether, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monopropyl ether, diethylene glycol monobutyl ether, dipropylene glycol monomethyl ether, dipropylene glycol monoethyl ether, and dipropylene glycol monopropyl ether. Further, in some embodiments, the alcohol ethers include diethylene glycol monoethyl ether.

In addition, in other embodiments, the alcohols or alcohol ethers are not limited to the above-mentioned ones, and other types of alcohols or alcohol ethers may also be used in the case of meeting requirements such as smoothness of printing or compatibility of the aqueous dye ink, and are not described in detail herein.

In some embodiments, the solvent includes two of the polyols described above and one of the alcohol ethers described above. Through the mixed use of a plurality of solvents, the trimethylolpropane in the formula can be reasonably proportioned and matched with the solvents, the dye ink has good compatibility, the printing smoothness is excellent, and the system is more stable.

According to the water-based dye ink provided by the embodiment of the invention, the dye in the dye color paste has the dye which can receive the color light by the existing ink-jet ink, and the dye color paste can obtain better color concentration and color reproducibility by controlling the weight content of the dye color paste to be 10-30%. The color or category of the dye in the dye color paste can be selected according to the actual color or category requirement.

In some embodiments, the dye paste comprises a reactive dye and/or a direct dye. It should be understood that the dye color paste contains dye, and the dye can be reactive dye, can be direct dye, and can also be reactive dye and direct dye.

In some embodiments, the reactive dye comprises at least one of a reactive red dye, a reactive yellow dye, a reactive blue dye, and a reactive black dye;

In some embodiments, the Direct dye comprises c.i. Direct Yellow (Direct Yellow)8, 9, 11, 12, 27, 28, 29, 33, 35, 39, 41, 44, 50, 53, 58, 59, 68, 86, 87, 93, 95, 96, 98, 100, 106, 108, 109, 110, 130, 132, 142, 144, 161, or 163. Further, the Direct dye includes c.i. Direct Yellow (Direct Yellow)93, 95, 96, 98, 100, 106, 108, 109, 110, 130, 132, 142, 144, 161, or 163.

In some embodiments, the Direct dye comprises c.i. Direct Blue (Direct Blue)1, 10, 15, 22, 25, 41, 55, 67, 68, 71, 76, 77, 78, 80, 84, 86, 87, 90, 98, 106, 108, 109, 120, 151, 156, 158, 159, 160, 153, 168, 189, 192, 193, 194, 199, 200, 201, 202, 203, 207, 211, 213, 214, 218, 225, 226, 229, 236, 237, 244, 248, 249, 252, 264, 270, 280, 288, 289, or 291. Further, the Direct dye includes c.i. Direct Blue (Direct Blue)120, 151, 156, 158, 159, 160, 153, 168, 189, 192, 193, 194, or 199.

In some embodiments, the Direct dye comprises c.i. Direct Violet (Direct Violet)7, 9, 47, 48, 51, 66, 90, 93, 94, 95, 98, 100 or 101.

In some embodiments, the Direct dye comprises c.i. Direct Black (Direct Black)9, 17, 19, 22, 32, 51, 56, 62, 69, 77, 80, 91, 94, 97, 108, 112, 113, 114, 117, 118, 121, 122, 125, 132, 146, 154, 166, 168, 173, 195, or 199. Further, the Direct dye includes c.i. Direct Black (Direct Black)132, 146, 154, 166, 168, 173, 195, or 199.

In some embodiments, the reactive dye comprises c.i. reactive red 2,3, 5, 8, 11, 21, 22, 23, 24, 28, 29, 31, 33, 35, 43, 45, 49, 55, 56, 58, 65, 66, 78, 83, 84, 106, 111, 112, 113, 114, 116, 120, 123, 124, 128, 130, 136, 141, 147, 158, 159, 171, 174, 180, 183, 184, 187, 190, 193, 194, 195, 198, 220, 222, 223, 226, 228, or 235. Further, in some embodiments, the reactive dye comprises c.i. reactive red 130, 136, 141, 147, 158, 159, 171, 174, 180, 183, 184, 187, 190, 193, 194, 195, or 198.

In some embodiments, the Reactive dye comprises c.i. Reactive Yellow 1,2,3, 5, 11, 13, 14, 15, 17, 18, 20, 22, 23, 24, 25, 26, 27, 29, 35, 37, 40, 41, 42, 47, 51, 55, 65, 67, 81, 95, 116, 142, or 161.

In some embodiments, the Reactive dye comprises c.i. Reactive Blue (Reactive Blue)1, 2,3, 5, 7, 8, 10, 13, 14, 15, 17, 18, 19, 21, 23, 25, 26, 27, 28, 29, 32, 35, 38, 41, 49, 63, 72, 75, 80, 95, or 190.

In some embodiments, the Reactive dye comprises c.i. Reactive Black (Reactive Black)1, 3, 4, 5, 7, 8, 11, 12, 14, 17, 21, 23, 26, 31, 32, 34, or 39.

In some embodiments, the functional adjuvant comprises at least one of a bactericide and a preservative. The functional assistant may be a bactericide (also referred to as an antimicrobial agent), may be an antiseptic, or may also be other types of conventional assistants that can be applied to dye inks.

The specific type or source of the functional assistant in the embodiment of the present invention is not strictly limited, for example, the functional assistant may be a preservative or a bactericide, and specifically, PROXEL GXL may be used.

In some embodiments of the present application, there is provided a method of preparing an aqueous dye ink, comprising: uniformly mixing the dye, the dispersion stabilizer, the surfactant, the solvent, the functional assistant and water according to the weight percentage to obtain the water-based dye ink.

The preparation method of the water-based dye ink is characterized by uniformly mixing the components with proper content, simple process, easy operation and suitability for industrial mass production.

In some embodiments of the present application, there is also provided a use of an aqueous dye ink in ink jet printing. Particularly, when the aqueous dye ink is applied, the aqueous dye ink can be mixed with original ink-jet pigment ink for use.

When the water-based dye ink is used for ink-jet printing, the pigment in the pigment ink can be dispersed and stabilized, and the pigment of the pigment ink is prevented from being coagulated and layered; therefore, the dye ink and the pigment ink have excellent compatibility, and when the two inks are mixed and print and do not block the nozzle or the printer is in a standby state for a long time, the ink in the nozzle is kept not to block the nozzle; meanwhile, the ink is good in fluency, and the service life of the printing nozzle can be further prolonged compared with other inks.

In order to fully illustrate the relevant performance of the aqueous dye ink provided by the application and facilitate understanding of the invention, multiple sets of experimental verification are carried out in the application. The present invention will be further described with reference to specific examples and comparative examples. The percentage of each component mentioned in the invention is weight percentage, and except for special indication, the percentage of the component in the total weight of the dye ink is all. Those skilled in the art will appreciate that only some of the examples described herein are within the scope of the present application and that any other suitable specific examples are within the scope of the present application.

Example 1

The aqueous dye ink comprises the following components in percentage by weight:

dye color paste: c.i. direct blue 199(DC199 color paste) 18%;

dispersion stabilizer: 12% of trimethylolpropane;

acetylene glycol surfactant: 1 percent;

solvent: 10% of glycerol, 3% of 1, 2-hexanediol and 5% of diethylene glycol monoethyl ether;

functional auxiliary agents: preservative (PROXEL GXL) 0.1%;

the balance being deionized water.

Example 2

The aqueous dye ink comprises the following components in percentage by weight:

dye color paste: c.i. reactive red 195(RM195 color paste) 20%;

dispersion stabilizer: 11% of trimethylolpropane;

acetylene glycol surfactant: 1 percent;

solvent: 8% of glycerol, 3% of 1, 2-hexanediol and 5% of diethylene glycol monoethyl ether;

functional auxiliary agents: preservative (PROXEL GXL) 0.1%;

the balance being deionized water.

Example 3

The aqueous dye ink comprises the following components in percentage by weight:

dye color paste: c.i. direct yellow 132(DY132 color paste) 25%;

dispersion stabilizer: 12% of trimethylolpropane;

acetylene glycol surfactant: 1 percent;

functional auxiliary agents: preservative (PROXEL GXL) 0.1%;

the balance being deionized water.

Comparative examples 1 to 3

The aqueous dye inks of comparative examples 1 to 3 did not contain trimethylolpropane as a dispersion stabilizer.

The aqueous dye ink of comparative example 1 comprises the following components in percentage by weight:

dye color paste: c.i. direct blue 199(DC199 color paste) 18%;

acetylene glycol surfactant: 1 percent;

solvent: 8% of diethylene glycol, 15% of glycerol, 3% of 1, 2-hexanediol and 5% of diethylene glycol monoethyl ether;

functional auxiliary agents: preservative (PROXEL GXL) 0.1%;

the balance being deionized water.

The aqueous dye ink of comparative example 2 comprises the following components in percentage by weight:

dye color paste: c.i. reactive red 195(RM195 color paste) 20%;

acetylene glycol surfactant: 1 percent;

solvent: 7% of diethylene glycol, 16% of glycerol, 3% of 1, 2-hexanediol and 5% of diethylene glycol monoethyl ether;

functional auxiliary agents: preservative (PROXEL GXL) 0.1%;

the balance being deionized water.

The aqueous dye ink of comparative example 3 comprises the following components in percentage by weight:

dye color paste: c.i. direct yellow 132(DY132 color paste) 25%;

acetylene glycol surfactant: 1 percent;

solvent: 7% of diethylene glycol, 10% of glycerol, 3% of 1, 2-hexanediol and 5% of diethylene glycol monoethyl ether;

functional auxiliary agents: preservative (PROXEL GXL) 0.1%;

the balance being deionized water.

Comparative examples 4 to 6

The content of trimethylolpropane, which is a dispersion stabilizer, in the aqueous dye inks of comparative examples 4 to 6 was less than 11%.

The aqueous dye ink of comparative example 4 comprises the following components in percentage by weight:

dye color paste: c.i. direct blue 199(DC199 color paste) 18%;

dispersion stabilizer: 6% of trimethylolpropane;

acetylene glycol surfactant: 1 percent;

solvent: 16% of glycerol, 3% of 1, 2-hexanediol and 5% of diethylene glycol monoethyl ether;

functional auxiliary agents: preservative (PROXEL GXL) 0.1%;

the balance being deionized water.

The aqueous dye ink of comparative example 5 comprises the following components in percentage by weight:

dye color paste: c.i. reactive red 195(RM195 color paste) 20%;

dispersion stabilizer: 5% of trimethylolpropane;

acetylene glycol surfactant: 1 percent;

solvent: 15% of glycerol, 3% of 1, 2-hexanediol and 5% of diethylene glycol monoethyl ether;

functional auxiliary agents: preservative (PROXEL GXL) 0.1%;

the balance being deionized water.

The aqueous dye ink of comparative example 6 comprises the following components in percentage by weight:

dye color paste: c.i. direct yellow 132(DY132 color paste) 25%;

dispersion stabilizer: 5% of trimethylolpropane;

acetylene glycol surfactant: 1 percent;

functional auxiliary agents: preservative (PROXEL GXL) 0.1%;

the balance being deionized water.

Comparative examples 7 to 9

The content of trimethylolpropane, which is a dispersion stabilizer, in the aqueous dye inks of comparative examples 7 to 9 was more than 18%.

The aqueous dye ink of comparative example 7 comprises the following components in percentage by weight:

dye color paste: c.i. direct blue 199(DC199 color paste) 18%;

dispersion stabilizer: 20% of trimethylolpropane;

acetylene glycol surfactant: 1 percent;

solvent: 6% of glycerol, 3% of 1, 2-hexanediol and 5% of diethylene glycol monoethyl ether;

functional auxiliary agents: preservative (PROXEL GXL) 0.1%;

the balance being deionized water.

The aqueous dye ink of comparative example 8 comprises the following components in percentage by weight:

dye color paste: c.i. reactive red 195(RM195 color paste) 20%;

dispersion stabilizer: 22% of trimethylolpropane;

acetylene glycol surfactant: 1 percent;

solvent: 5% of glycerol, 3% of 1, 2-hexanediol and 5% of diethylene glycol monoethyl ether;

functional auxiliary agents: preservative (PROXEL GXL) 0.1%;

the balance being deionized water.

The aqueous dye ink of comparative example 9 comprises the following components in percentage by weight:

dye color paste: c.i. direct yellow 132(DY132 color paste) 25%;

dispersion stabilizer: 22% of trimethylolpropane;

acetylene glycol surfactant: 1 percent;

functional auxiliary agents: preservative (PROXEL GXL) 0.1%;

the balance being deionized water.

Performance testing

(1) Print smoothness test

The aqueous dye inks of the above examples and comparative examples were mixed with a pigment ink (the weight ratio of the aqueous dye ink to the pigment ink was 10: 1), and a print smoothness test was performed, and the corresponding test results are shown in table 1 below.

(2) Stability test

20mL of the aqueous dye inks prepared in the above examples and comparative examples were taken from a measuring cylinder, and 2g of the pigment ink was mixed into each dye ink for a normal standing test, and the corresponding test results are shown in Table 1 below.

TABLE 1 test results of dye inks of examples and comparative examples

As can be seen from table 1, the aqueous dye inks provided in examples 1 to 3 of the present invention have improved compatibility with pigment inks, and can achieve outstanding effects of not blocking a head, having good printing smoothness, and not causing delamination after long-term storage, compared to the aqueous dye inks of comparative examples 1 to 3 to which trimethylolpropane as a dispersion stabilizer is not added. As can also be seen from table 1, the content of trimethylolpropane as a dispersion stabilizer in the aqueous dye inks in comparative examples 4 to 6 was less than 11%, a phenomenon in which the nozzle was clogged and the mixed ink was layered after being left for 24 hours was observed, and the content of trimethylolpropane as a dispersion stabilizer in the aqueous dye inks in comparative examples 7 to 9 was more than 18%, and printing smoothness was poor; thus, compared with comparative examples 4 to 6 and 7 to 9, the aqueous dye inks provided in examples 1 to 3 of the present invention can further improve the compatibility between the dye inks and the pigment inks by controlling the content of trimethylolpropane as a dispersion stabilizer to be in the range of 11% to 18%, reduce the phenomena of clogging of a nozzle and delamination of the mixed ink after long-term storage, and improve the printing smoothness.

In addition, aqueous dye inks were prepared as described in examples 1-3 above, and the present invention also proceeds from examples 4-8, except that the aqueous dye inks were different in composition.

Example 4

This example differs from example 1 only in that: the content of trimethylolpropane as a dispersion stabilizer was 15%.

Example 5

This example differs from example 2 only in that: the content of trimethylolpropane as a dispersion stabilizer was 16%.

Example 6

This example differs from example 3 only in that: the content of trimethylolpropane as a dispersion stabilizer was 18%.

Example 7

This example differs from example 1 only in that: the solvent comprises 6% of diethylene glycol, 8% of glycerol, 3% of 1, 2-hexanediol and 5% of diethylene glycol monoethyl ether.

Example 8

This example differs from example 1 only in that: the solvent comprises 8% of glycerol, 4% of 1, 2-propylene glycol and 6% of propylene glycol monoethyl ether.

The properties of the aqueous dye inks prepared in examples 4-8 are similar to those of examples 1-3 above, and are not described in detail.

While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims

1. The water-based dye ink is characterized by comprising the following components in percentage by weight:

2. The aqueous dye ink of claim 1, wherein the polyol having a plurality of hydroxyl groups comprises at least one of trimethylolpropane, trimethylolethane, or neopentyl glycol.

3. The aqueous dye ink of claim 1, wherein the surfactant comprises a non-ionic surfactant.

4. The aqueous dye ink of claim 1, wherein the surfactant comprises an acetylenic diol surfactant and/or a silicon-based surfactant.

5. The aqueous dye ink of claim 1, wherein the solvent comprises a water-soluble organic solvent comprising at least one of a polyol and an alcohol ether.

6. The aqueous dye ink of claim 5, wherein the polyol comprises at least one of ethylene glycol, propylene glycol, glycerol, 1, 2-hexanediol, 1, 2-propanediol, diethylene glycol, and triethylene glycol;

7. The aqueous dye ink according to claim 1, wherein the dye paste comprises reactive dyes and/or direct dyes.

8. The aqueous dye ink of claim 7, wherein the reactive dye comprises at least one of a reactive red dye, a reactive yellow dye, a reactive blue dye, and a reactive black dye;

9. The aqueous dye ink according to any one of claims 1 to 8, wherein the functional assistant comprises at least one of an antibacterial agent and a preservative.

10. Use of an aqueous dye ink according to any one of claims 1 to 9 in ink jet printing.