TWI849613B - Water pressure-resistant printing ink - Google Patents

Abstract

A water pressure-resistant printing ink includes 12 parts by weight of an oligomer material, 0.6 parts by weight to 1.0 parts by weight of a fatty diamine, 6 parts by weight to 8 parts by weight of a water-based bridging agent, 1.5 parts by weight of a surfactant, and 25 parts by weight to 30 parts by weight of water, in which the oligomer is formed by reacting polyol with isocyanate.

Description

Water-resistant inkjet ink

The present disclosure relates to an ink, and more particularly to a water-resistant pressure-jet ink.

With the improvement of living standards in today's society, people's demand for functional textiles is also increasing. With the continuous emergence of various functional textiles, the development of functional textiles with specific purposes is also becoming more and more perfect. One kind of functional fabric that is widely loved by consumers is water pressure resistant fabric, which has the effect of rainproof and can be used as outdoor products such as tents or mountaineering jackets. However, related products on the market often use methods such as gluing and laminating to configure the water pressure resistant film on the surface of the fabric, or use coating, impregnation and other preparation methods that require a large amount of chemicals to make it, which is time-consuming and labor-intensive and not conducive to environmental protection. In addition, when attempting to form a water pressure resistant film by inkjet printing, the nozzle often becomes blocked or the printability is low due to formulation problems. Therefore, how to provide an ink that is printable and can provide water pressure resistance after printing is still an important topic that textile industry professionals are actively researching.

The present disclosure provides a water-resistant pressure-printing ink, which is not only printable but also can be heat-treated after printing to have good water-resistant properties.

According to some embodiments of the present disclosure, a water-resistant pressure-jet ink comprises 12 parts by weight of an oligomer material, 0.6 to 1.0 parts by weight of a fatty diamine, 6 to 8 parts by weight of an aqueous crosslinker, 1.5 parts by weight of a surfactant, and 25 to 30 parts by weight of water, wherein the oligomer material is formed by the reaction of a polyol and an isocyanate.

In some embodiments of the present disclosure, the oligomer material includes hydroxyl and isocyanate groups.

In some embodiments of the present disclosure, the polyol includes 2 moles of polycarbonate diol, 1 mole of poly(1,4-butylene adipate) diol, and 1 mole of poly(tetramethylene ether) glycol.

In some embodiments of the present disclosure, the content of the isocyanate is 3 mol, and the isocyanate includes xylene diisocyanate and isophorone diisocyanate.

In some embodiments of the present disclosure, the polyol includes 1 mol part of a hydrogenated hydroxyl-terminated rubber, 2 mol parts of a polycarbonate diol, 1 mol part of poly(1,4-butylene adipate) diol, and 1 mol part of poly(tetramethylene ether) glycol.

In some embodiments of the present disclosure, the content of the isocyanate is 4 mol parts, and the isocyanate includes xylene diisocyanate and isophorone diisocyanate.

In some embodiments of the present disclosure, the polyol includes 1 mol of a hydrogenated hydroxyl-terminated rubber, 3 mol of poly(1,4-butylene adipate) glycol, and 1 mol of poly(tetramethylene ether glycol).

In some embodiments of the present disclosure, the content of the isocyanate is 4 mol parts, and the isocyanate includes xylene diisocyanate and isophorone diisocyanate.

In some embodiments of the present disclosure, the water-resistant pressure-jet printing ink further includes 0.16 to 2.20 parts by weight of a polyamine and 0.015 parts by weight of nanocellulose.

In some embodiments of the present disclosure, at a temperature of 25° C., the viscosity of the water-resistant pressure-jet ink is between 2.0 cP and 20.0 cP, and the surface tension is between 20 dyne/cm and 50 dyne/cm.

According to the above-mentioned embodiment of the present disclosure, the water-resistant pressure-printing ink includes an appropriate amount of fatty diamine. Based on the hydrophobicity of the fatty diamine and the ability to harden quickly after being heated, the water-resistant pressure-printing ink can be heat-treated after printing to have water pressure resistance. In this way, the fabric can be made water-resistant simply by inkjetting and then hardening, thereby eliminating the cumbersome and complicated processes of coating, impregnation, and gluing, and has the environmental advantages of reducing the amount of chemicals used, saving energy and reducing carbon emissions.

The following will disclose multiple implementations of the present disclosure. For the purpose of clarity, many practical details will be described together in the following description. However, it should be understood that these practical details should not be used to limit the present disclosure. In other words, in some implementations of the present disclosure, these practical details are not necessary and therefore should not be used to limit the present disclosure.

In this article, the structure of a polymer or group is sometimes expressed as a skeleton formula. This representation may omit carbon atoms, hydrogen atoms, and carbon-hydrogen bonds. Of course, if the atoms or atomic groups are explicitly drawn in the structural formula, the drawn atoms or atomic groups shall prevail.

The present disclosure provides a water-resistant pressure-printing ink, which includes an appropriate amount of aliphatic diamine. Based on the hydrophobicity of the aliphatic diamine and the ability to quickly harden when heated, the water-resistant pressure-printing ink can be heat-treated after printing to have water pressure resistance. In this way, the fabric can be made water-resistant simply by inkjetting and then hardening, thereby eliminating the cumbersome and complicated processes of coating, impregnation, and gluing.

The water-resistant pressure-printing ink disclosed herein comprises 12 parts by weight of an oligomer material, 0.6 to 1.0 parts by weight of a fatty diamine, 6 to 8 parts by weight of an aqueous crosslinking agent, 1.5 parts by weight of a surfactant, and 25 to 30 parts by weight of water. Specifically, the water-resistant pressure-printing ink is heat-treated after printing to allow the oligomer material, the fatty diamine, and the aqueous crosslinking agent therein to react and crosslink with each other to form a film having water-resistant pressure-printing function. For example, the molecular end of the oligomer material may have a hydroxyl group, and the molecular end of the water-based crosslinking agent after unblocking may have an isocyanate group, whereby the oligomer material, the fatty diamine and the water-based crosslinking agent can crosslink with each other on the fabric to form a film that is firmly arranged on the surface of the fabric and has a water pressure resistance function, thereby providing the fabric with good water pressure resistance. In addition, based on the hydrophobicity and good post-hardening properties of the fatty diamine, the water pressure-resistant inkjet printing ink can quickly harden after printing without penetrating the fabric and without generating through holes, so as to have good water pressure resistance. Surfactants can maintain the size stability of particles in water-resistant pressure-jet inks, allowing the dispersed matter to be completely dispersed to avoid the formation of precipitates or agglomerates, thereby ensuring that the water-resistant pressure-jet inks are printable.

By adjusting the content of oligomer material, fatty diamine and water-based crosslinking agent, it is possible to ensure that the film formed by the water-resistant pressure-jet ink is firmly arranged on the surface of the fabric. Specifically, if the content of oligomer material is less than 12 parts by weight, the content of fatty diamine is less than 0.6 parts by weight and/or the content of water-based crosslinking agent is higher than 8 parts by weight, only part of the functional groups in each molecule of the water-based crosslinking agent will react after unblocking, and a complex network structure cannot be formed, which is not conducive to the film being firmly arranged on the surface of the fabric. In addition, if the content of fatty diamine is too low, it will be not conducive to improving the water pressure resistance of the film. If the content of oligomer material is less than 12 parts by weight, the content of fatty diamine is less than 0.6 parts by weight and/or the content of water-based crosslinking agent is higher than 8 parts by weight, only part of the functional groups in each molecule of the water-based crosslinking agent will react after unblocking, and a complex network structure cannot be formed, which is not conducive to the film being firmly arranged on the surface of the fabric. In addition, if the content of fatty diamine is too low, it will be not conducive to improving the water pressure resistance of the film. If the content of the oligomer material is higher than 12 parts by weight, the content of the fatty diamine is higher than 1.0 parts by weight, and/or the water-based crosslinking agent is lower than 6 parts by weight, it is impossible to ensure that each molecule of the oligomer material and the fatty diamine reacts with the water-based crosslinking agent, resulting in a certain proportion of components of the water pressure resistant ink being unable to react after printing. In this way, it is impossible to ensure that each area on the surface of the fabric is covered by the film, and it is difficult to ensure the uniformity of the water pressure resistance.

On the other hand, by adjusting the content of the surfactant, the particle size in the water-resistant pressure-jet ink can be maintained stable, and the dispersed matter can be completely dispersed to avoid the generation of precipitates or agglomerates, thereby ensuring that the water-resistant pressure-jet ink has printability. Specifically, if the content of the surfactant is less than 1.5 parts by weight, the dispersed matter in the water-resistant pressure-jet ink may not be effectively dispersed, and precipitates or agglomerates may be generated; and if the content of the surfactant is greater than 25 parts by weight, the agglomerates in the water-resistant pressure-jet ink will lose the agglomeration effect due to the repulsion generated by the excessive surfactant. In addition, by adjusting the water content, it is possible to ensure that the water-resistant pressure-jet ink has an appropriate viscosity (thickness), thereby having appropriate fluidity/retention during printing, so as to facilitate it to remain on the surface of the fabric and wait for subsequent heat treatment.

In some embodiments, the aliphatic diamine may be an aliphatic diamine having a cyclohexane ring, such as diaminodicyclohexylmethane, cyclohexanediamine, and isophoronediamine, or a combination thereof.

In some embodiments, the molecular design of the oligomer material can be adjusted to make the water-resistant inkjet ink have better printability and better water pressure resistance after film formation. In some embodiments, the oligomer material can be formed by reacting a polyol with an isocyanate. Specifically, the polyol can include poly(1,4-butylene adipate), polycarbonate, polytetramethylene ether glycol, hydrogenated hydroxyl-terminated rubber (e.g., hydrogenated nitrile rubber) or a combination thereof; the isocyanate can include xylene diisocyanate, isophorone diisocyanate or a combination thereof. Note 1: Poly(1,4-butylene adipate), abbreviated as PBA. Note 2: Polycarbonate diol: polycarbonatediol, abbreviated as PCD. Note 3: polytetramethylene ether glycol: polytetramethylene ether glycol, abbreviated as PTMEG. Note 4: Hydrogenated nitrile rubber: hydrogenated nitrile rubber, abbreviated as HNBR. Note 5: xylylene diisocyanate: xylylene diisocyanate, abbreviated as XDI. Note 6: isophorone diisocyanate: isophorone diisocyanate, abbreviated as IPDI.

In some embodiments, the oligomer material can form a long chain molecule extending from the center to both ends by controlling its synthesis conditions, and considering that the molecular design will affect the printability of the water pressure-resistant inkjet ink and its water pressure resistance after film formation, the molecules of the oligomer material can include specific chain segment structures in sequence from the center to both ends. For example, the molecules of the oligomer material can include copolymerized chain segments of polycarbonate diol (PCD) and xylene diisocyanate (XDI), copolymerized chain segments of polybutylene adipate (PBA) and xylene diisocyanate (XDI), and copolymerized chain segments of polytetramethylene ether glycol (PTMEG) and isophorone diisocyanate (IPDI) in sequence from the center to both ends. For another example, the molecules of the oligomer material may include, from the center to both ends, copolymer segments of polycarbonate diol (PCD) and xylene diisocyanate (XDI), copolymer segments of hydrogenated nitrile rubber (HNBR) and xylene diisocyanate (XDI), copolymer segments of polybutylene adipate-1,4-diol (PBA) and xylene diisocyanate (XDI), and copolymer segments of polytetramethylene ether glycol (PTMEG) and isophorone diisocyanate (IPDI). For another example, the molecules of the oligomer material may respectively include, from the center to both ends, copolymer segments of poly(1,4-butylene adipate) (PBA) and xylene diisocyanate (XDI), copolymer segments of hydrogenated nitrile rubber (HNBR) and xylene diisocyanate (XDI), copolymer segments of poly(1,4-butylene adipate) (PBA) and xylene diisocyanate (XDI), and copolymer segments of poly(tetramethylene ether glycol) (PTMEG) and isophorone diisocyanate (IPDI).

In detail, since polybutylene adipate diol and polycarbonate diol have high hardness, they are suitable for designing at the molecular center of the oligomer material to provide better water pressure resistance. However, if the molecular structure of the oligomer material is too rigid, it will be difficult to emulsify to form ink. Therefore, polytetramethylene ether glycol with a longer soft chain segment can be combined with isophorone diisocyanate without a benzene ring (softer chain segment) and designed at the molecular tail of the oligomer material to facilitate the emulsification of the oligomer material. On the other hand, the soft-chain and highly hydrophobic hydrogenated nitrile rubber is designed between polybutylene adipate diol/polycarbonate diol and polytetramethylene ether diol as a transition segment, which can take into account both water pressure resistance and emulsification. It is worth mentioning that although hydrogenated nitrile rubber has a soft chain structure, due to its hydrophobicity, if hydrogenated nitrile rubber is designed at the molecular end of the oligomer material, it is easy to cause the oligomer material to fail to emulsify; and if hydrogenated nitrile rubber is not used, the molecular structure of the oligomer material is too hard, which easily causes the film formed by the water-resistant pressure-printing ink to be too hard and easy to break, making it difficult to have high water pressure resistance. In general, the molecules of the oligomer material include a plurality of continuous chain segments formed by the reaction of polyols and isocyanates, and through the above molecular design, the oligomer material can have good emulsification to facilitate the formation of ink, and can have good water pressure resistance after heat treatment.

In some embodiments, when the molecules of the oligomer material include, from the center to both ends, copolymer segments of polycarbonate diol and xylene diisocyanate, copolymer segments of poly(1,4-butylene adipate diol) and xylene diisocyanate, and copolymer segments of poly(tetramethylene ether glycol) and isophorone diisocyanate, the content of polycarbonate diol may be 2 mol parts, the content of poly(1,4-butylene adipate diol) may be 1 mol part, the content of poly(tetramethylene ether glycol) may be 1 mol part, and the content of isocyanate may be 3 mol parts (this embodiment is referred to as M2). In some embodiments, when the molecules of the oligomer material include, from the center to both ends, copolymer segments of polycarbonate diol and xylene diisocyanate, copolymer segments of hydrogenated nitrile rubber and xylene diisocyanate, copolymer segments of poly(1,4-butylene adipate diol) and xylene diisocyanate, and copolymer segments of poly(tetramethylene ether glycol) and isophorone diisocyanate, the content of polycarbonate diol may be 2 mol parts, the content of hydrogenated nitrile rubber (hydrogenated hydroxyl-terminated rubber) may be 1 mol part, the content of poly(1,4-butylene adipate diol) may be 1 mol part, the content of poly(tetramethylene ether glycol) may be 1 mol part, and the content of isocyanate may be 4 mol parts (this embodiment is referred to as M3). In some embodiments, when the molecules of the oligomer material may include, from the center to both ends, copolymer segments of poly(1,4-butylene adipate) diol and xylene diisocyanate, copolymer segments of hydrogenated nitrile rubber and xylene diisocyanate, copolymer segments of poly(1,4-butylene adipate) diol and xylene diisocyanate, and copolymer segments of polytetramethylene ether glycol and isophorone diisocyanate, the content of poly(1,4-butylene adipate) diol may be 3 mol parts, the content of hydrogenated nitrile rubber (hydrogenated hydroxyl-terminated rubber) may be 1 mol part, the content of polytetramethylene ether glycol may be 1 mol part, and the content of isocyanate may be 4 mol parts (this embodiment is referred to as M5 for short). By adjusting the content of each component to the above ratio and controlling the order of addition of each component, it is possible to form an oligomer material with a long-chain molecular structure, and the resulting oligomer material can have good ink-forming properties (emulsification properties) and can provide good water pressure resistance.

In some embodiments, the molecules of the oligomer material include hydroxyl and isocyanate groups. In some embodiments, the molecules of the oligomer material may have a symmetrical structure. Since the molecules of the oligomer material include hydroxyl and isocyanate groups, they can cross-link with aliphatic diamine and aqueous crosslinking agent on the fabric to form a complex network structure, which is conducive to firmly disposing the film formed by the water-resistant pressure-printing ink on the surface of the fabric, thereby improving the water pressure resistance and water washing resistance of the fabric. In addition, through the molecular design of the oligomer material, the oligomer material can be emulsified to prepare a printable water-resistant pressure-printing ink even if it has a large molecular weight. In some embodiments, the weight average molecular weight of the oligomer material can be between 5000 Dalton and 50000 Dalton.

In some embodiments, the aqueous crosslinking agent may include an isocyanate trimer. Specifically, the aqueous crosslinking agent may include a molecular structure as shown in formula (1): Formula (1), wherein at least two ends of the isocyanate trimer may have a functional group such as 3,5-dimethylpyrazole (DMP). Specifically, in Formula (1), any two or more of R ₁ , R ₂ and R ₃ may include a molecular structure as shown in Formula (2): Formula (2). For example, the water-based crosslinking agent can be derived from an aliphatic isocyanate, such as hexamethylene diisocyanate (HDI), xylene diisocyanate (XDI), trimethyl hexamethylene diisocyanate (TMHDI), hydrogenated toluene diisocyanate (HTDI), isophorone diisocyanate (IPDI), dicyclohexylmethane-4,4'-diisocyanate (HMDI) trimer or a combination thereof. For another example, the water-based crosslinking agent can be derived from an aromatic isocyanate, such as toluene diisocyanate (TDI), diphenylmethane diisocyanate (MDI) trimer or a combination thereof. In addition, with respect to the surfactant, in some embodiments, the surfactant may be, for example, polydimethylsiloxane, polyether-modified siloxane, polyether-modified polydimethylsiloxane, or a combination thereof. Note 7: HDI is the abbreviation of hexamethylene diisocyanate. Note 8: TMHDI is the abbreviation of trimethylhexamethylene diisocyanate. Note 9: HTDI is the abbreviation of hydrogenated tolylene diisocyanate. Note 10: HMDI is the abbreviation of dicyclohexylmethane-4,4'-diisocyanate. Note 11: TDI is the abbreviation of tolylene diisocyanate. Note 12: MDI is the abbreviation of diphenyl methane diisocyanate. Note 13: DMP is the abbreviation of 3,5-dimethylpyrazole.

In some embodiments, the water-resistant pressure-printing ink may further include 0.16 to 2.20 parts by weight of a polyamine. The polyamine may enhance the degree of crosslinking of the components in the water-resistant pressure-printing ink during heat treatment. In some embodiments, the polyamine may include a polyetheramine, a polyamide, or a polyimide. In other embodiments, the polyamine may include an aliphatic amine. Specifically, the aliphatic amine may be hexamethylenediamine, diethylhexamethylenediamine, trimethylhexamethylenediamine, heptamethylenediamine, trimethylethylenediamine, tetraethylethylenediamine, tetramethylethylenediamine, nonanediamine, laurylamine dipropylenediamine, diethylenetriamine, triethylenetetramine, or polyethyleneimine. In some embodiments, the weight average molecular weight of the polyamine may be between 102 mol and 1000 mol, and preferably between 102 mol and 400 mol, so as to improve the ink forming property and reduce the possibility of ink stratification. In some embodiments, the water-resistant pressure printing ink may further include 0.015 parts by weight of nanocellulose. Nanocellulose helps to improve the emulsification of the fatty diamine, thereby delaying the ink stratification, so as to improve the stability and storage of the ink.

In some embodiments, the water-resistant pressure-printable ink may further include 0.1 to 0.5 parts by weight of a defoamer. The defoamer within the above content range ensures that there is no foam in the hygroscopic shrinkage ink. Specifically, if the content of the defoamer is less than 0.1 parts by weight, the water-resistant pressure-printable ink is prone to foaming due to the alkaline components therein, thereby affecting the stability of the water-resistant pressure-printable ink and the smoothness during printing; and if the content of the defoamer is greater than 0.5 parts by weight, it is easy to cause the viscosity and surface tension of the water-resistant pressure-printable ink to be too low, thereby affecting the overall properties of the ink. In some embodiments, the defoaming agent may be, for example, polyether-modified polydimethylsiloxane, cell-breaking polysiloxane, a mixture of cell-breaking polysiloxane dissolved in polyethylene glycol and hydrophobic particles, or a combination thereof.

In general, the viscosity of the water-resistant inkjet ink disclosed herein at a temperature of 25° C. may be between 2.0 poise (cP) and 20.0 cP, and the surface tension at a temperature of 25° C. may be between 20 dyne/cm and 50 dyne/cm, which is suitable for inkjet printing. On the other hand, the compatibility of the water-resistant inkjet ink disclosed herein at a temperature of 25° C. may be more than 30 days, that is, the water-resistant inkjet ink may be placed for at least 30 days without delamination, and has high stability and storage properties. It should be understood that the viscosity of the water-resistant pressure-jet ink is measured using a viscometer (model: Brookfield DV2T), the surface tension is measured using a surface tension meter (model: Kyowa DY-300), and the compatibility is obtained by placing the water-resistant pressure-jet ink in a normal pressure environment and observing its stratification with the naked eye.

In the following description, various tests and evaluations will be conducted on the water-resistant pressure-printing ink disclosed herein and the water-resistant pressure-printing fabric made using the water-resistant pressure-printing ink. It should be understood that the materials used, their amounts and proportions, processing details and processing procedures, etc. may be appropriately changed without exceeding the scope of the present disclosure. Therefore, the present disclosure should not be construed restrictively by the embodiments described below. <Experimental Example 1: Evaluation of the basic formula of water-resistant pressure-printing ink>

In this experimental example, the viscosity and surface tension compatibility (stability) of the water-resistant pressure-printing ink of each embodiment were measured. The components and contents (weight parts) in the water-resistant pressure-printing ink of each embodiment and the measurement results are shown in Table 1. Among them, the water-based crosslinking agent is derived from the structure of HDI trimer, the fatty diamine is cyclohexanediamine, the surfactant is polyester-modified polydimethylsiloxane, and the polyamine is diethylenetriamine.

Table I Embodiment 1 Embodiment 2 Embodiment 3 Embodiment 4 Oligomeric Materials 12 (M2) 12 (M3) 12 (M5) 12 (M5) Water-based bridging agent 6.2 7.8 6.5 7.5 Fatty diamine 1.0 0.6 0.6 0.6 Surfactant 1.5 1.5 1.5 1.5 Polyamine N/A N/A N/A 0.16 Nanocellulose N/A N/A N/A 0.015 water 30 25 25 25 Viscosity(cP) 2.67 2.82 3.10 2.95 Surface tension (dyne/cm) 36.2 35.1 30.1 31.4 compatibility >30 days >30 days >30 days >90 days

As can be seen from Table 1, the viscosity of the water-resistant pressure-printing ink of each embodiment is between 2.0cP and 20.0cP, the surface tension is between 20dyne/cm and 50dyne/cm, and the compatibility is at least 30 days. Therefore, the water-resistant pressure-printing ink of each embodiment has suitable fluidity, is conducive to the formation of ink droplets, has good permeability, and is not prone to ink deposition and nozzle clogging. In addition, as can be seen from Example 4, when nanocellulose is added, the compatibility (storage days) of the water-resistant pressure-printing ink can be further improved. It should be understood that from other embodiments (not shown in the table), the viscosity and surface tension of the water-resistant pressure-printing ink disclosed in the present disclosure can be between any two values in Table 1, so they are not listed one by one here. <Experimental Example 2: Evaluation of water pressure resistance of water-resistant inkjet printing on fabric>

In this experimental example, the water-resistant inkjet printing inks of Examples 1 to 4 were printed on woven fabrics, and the water-resistant fabrics (water-resistant fabrics) were tested for water-resistant properties using the standard method AATCC127 Option 2 low-speed water-resistant method. The test results are shown in Table 2.

Table II Embodiment 1 Embodiment 2 Embodiment 3 Embodiment 4 Water pressure resistance (mmH ₂ O) 930.2 1255 1872 2000

From Table 2, it can be seen that the water pressure resistance of the water-resistant pressure-printing ink of each embodiment can be between 930 mmH ₂ O and 2000 mmH ₂ O. From other embodiments (not shown in the table), it can be seen that the water pressure resistance of the water-resistant pressure-printing ink of the present disclosure can be between 900 mmH ₂ O and 2000 mmH ₂ O, and can be between any two values in Table 2, which are not listed one by one here.

According to the above-mentioned embodiments of the present disclosure, since the water-resistant pressure-printing ink includes an appropriate amount of fatty diamine, the water-resistant pressure-printing ink can be heat-treated after printing to have water pressure resistance. In addition, through the molecular design of the oligomer material and the mutual matching of various formulas, the printability of the water-resistant pressure-printing ink and the water pressure resistance after printing can be further improved. In this way, the water-resistant pressure-printing ink can be simply formed on the surface of the fabric to be printed by inkjetting to obtain a fabric with water pressure resistance, thereby eliminating cumbersome and complicated processes such as coating, impregnation, and gluing.

Although the present disclosure has been disclosed in the above implementation form, it is not intended to limit the present disclosure. Anyone skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be determined by the scope of the attached patent application.

without

Domestic storage information (please note in the order of storage institution, date, and number) None Foreign storage information (please note in the order of storage country, institution, date, and number) None

Claims (10)

A water-resistant pressure-jet ink comprising: 12 parts by weight of an oligomer material, wherein the oligomer material is formed by reacting a polyol with an isocyanate; 0.6 parts by weight to 1.0 parts by weight of a fatty diamine; 6 parts by weight to 8 parts by weight of an aqueous crosslinking agent; 1.5 parts by weight of a surfactant; and 25 parts by weight to 30 parts by weight of water. The water-resistant pressure-jet ink of claim 1, wherein the oligomer material comprises hydroxyl and isocyanate groups. The water-resistant pressure-jet ink as described in claim 2, wherein the polyol comprises 2 mol parts of polycarbonate diol, 1 mol part of poly(1,4-butylene adipate) diol and 1 mol part of polytetramethylene ether glycol. The water-resistant pressure-jet ink as described in claim 3, wherein the content of the isocyanate is 3 mol parts, and the isocyanate includes xylene diisocyanate and isophorone diisocyanate. The water-resistant pressure-jet ink as described in claim 2, wherein the polyol includes 1 mol of a hydrogenated hydroxyl-terminated rubber, 2 mol of a polycarbonate diol, 1 mol of poly(1,4-butylene adipate) diol, and 1 mol of polytetramethylene ether glycol. The water-resistant pressure-jet ink as described in claim 5, wherein the content of the isocyanate is 4 mol parts, and the isocyanate includes xylene diisocyanate and isophorone diisocyanate. The water-resistant pressure-jet ink as described in claim 2, wherein the polyol comprises 1 mol of a hydrogenated hydroxyl-terminated rubber, 3 mol of poly(1,4-butylene adipate) glycol, and 1 mol of polytetramethylene ether glycol. The water-resistant pressure-jet ink as described in claim 7, wherein the content of the isocyanate is 4 mol parts, and the isocyanate includes xylene diisocyanate and isophorone diisocyanate. The water-resistant pressure-jet printing ink as described in claim 1 further comprises: 0.16 to 2.20 parts by weight of a polyamine; and 0.015 parts by weight of a nanocellulose. The water-resistant embossing ink as described in claim 1, wherein at a temperature of 25°C, the viscosity of the water-resistant embossing ink is between 2.0 poise and 20.0 poise, and the surface tension is between 20 dyne/cm and 50 dyne/cm.