CN108840992A - Aqueous ink composition, water-based ink resin and its preparation method and application - Google Patents

Abstract

The invention relates to the field of water-based ink, and discloses a water-based ink composition, a water-based ink resin and a preparation method and application thereof. A water-based ink composition. Wherein, in terms of weight percent, the composition contains the following components: (1) 20-35% by weight of hydroxyl-terminated polyamide-ether resin; (2) 5-15% by weight of diisocyanate; (3) 2-2% by weight of dihydric alcohol 10% by weight; (4) 2-10% by weight of dibasic amine sulfonate; (5) 1-6% by weight of epoxy alcohol; (6) 45-65% by weight of water. The water-based ink resin prepared by the water-based ink composition of the invention has good adhesion fastness and good printability. After the water-based ink made of the water-based ink resin is printed on the packaging substrate, it has the advantages of water-resistant and steam-resistant.

Description

Water-based ink composition, water-based ink resin, preparation method and application thereof

technical field

The invention relates to the field of water-based ink, in particular to a water-based ink composition, a water-based ink resin and a preparation method and application thereof.

Background technique

High-temperature-resistant steamed food is popular among consumers for its long shelf life, which can be eaten cold or hot, and is easy to carry. This type of food usually needs to undergo high-temperature boiling or steaming after packaging, so higher requirements are placed on food packaging. Not only is the packaging base material required to withstand the test of high temperature, but it is also required that the printed and composited packaging bag has a higher composite strength. With the strengthening of domestic environmental protection awareness, my country's flexible packaging ink products are developing rapidly in the direction of environmental protection and hygiene. Water-based ink is non-toxic, non-irritating, non-corrosive, non-flammable, non-explosive, safe to use, and does not harm the environment or human body. It is a typical green product.

CN104059429B discloses a water-soluble interior printing composite plastic ink using a water-soluble acrylic modified resin as an ink binder. Since this type of water-soluble resin has poor adhesion to the base material, it cannot meet the requirements of resistance to boiling and boiling.

Water-based polyurethane is an environmentally friendly material with water as the dispersion medium. It is widely used in adhesives, coatings, leather, textile auxiliaries, medicine and hygiene, building materials and printing. The development of water-based inks with water-based polyurethane as the ink binder has attracted extensive attention from researchers. US5470907 discloses a method for preparing a water-based polyurethane emulsion using dimethylol propionic acid as a hydrophilic chain extender, but due to the catalytic hydrolysis of carboxyl groups, the prepared polyurethane emulsion has poor hydrolysis resistance after film formation . Therefore, water-based polyurethane in the general sense is difficult to meet the requirements of retort-resistant packaging under high temperature, high humidity, and water vapor penetration and destruction.

In recent years, ink for ordinary light packaging has gradually increased in the market. However, as water-based inks for retort packaging, the current effects are not satisfactory. Therefore, the development of water-based inks that are retort-resistant and retort-resistant has become an inevitable step for the environmental protection of inks.

Contents of the invention

The purpose of the present invention is to overcome the problem that the water-based ink for packaging in the prior art cannot meet the requirements of water-resistance and retort resistance, and provide water-based ink composition, water-based ink resin and its preparation method and application, prepared by the water-based ink composition of the present invention The water-based ink resin has good adhesion fastness and good printability. After the water-based ink made of the water-based ink resin is printed on the packaging substrate, it has the advantages of resistance to boiling and boiling.

In order to achieve the above object, the first aspect of the present invention provides a water-based ink composition, wherein, by weight percentage, the composition contains the following components:

Preferably, the hydroxyl value of the hydroxyl-terminated polyamide-ether resin is 28-56 mg(KOH)/g.

Preferably, the hydroxyl-terminated polyamide-ether resin is a hydroxyl-terminated polyamide-polyoxyethylene glycol resin, a hydroxyl-terminated polyamide-polyoxypropylene glycol resin, a hydroxyl-terminated polyamide-polytetrahydrofuran glycol resin, a hydroxyl-terminated At least one of polyamide-propylene oxide-ethylene oxide copolymerized glycol resin, hydroxyl-terminated polyamide-tetrahydrofuran-oxypropylene copolymerized glycol resin, and hydroxyl-terminated polyamide-tetrahydrofuran-ethylene oxide copolymerized glycol resin.

Preferably, the diisocyanate is at least one of toluene diisocyanate, diphenylmethane diisocyanate, hexamethylene diisocyanate, isophorone diisocyanate, dimethylene benzene diisocyanate, dicyclohexylmethane diisocyanate A sort of.

Preferably, the dihydric alcohol is 2,2-dimethyl-1,3-propanediol, 2-ethyl-2-butyl-1,3-propanediol, neopentyl glycol, 1,2-cyclohexyl Diol, 1,3-cyclohexanediol, 1,4-cyclohexanediol, hydrogenated bisphenol A, 2-isopropyl-1,4-butanediol, 3-methyl-1,5-pentane at least one of diol and 2,4-dimethyl-1,5-pentanediol.

Preferably, the diamine sulfonate is 2-(2-amino-cyclohexylamino)-sodium ethanesulfonate, 2-[(5-amino-1,3,3-trimethyl-cyclohexyl Methyl)-amino]-sodium ethanesulfonate, 2-[4-(4-amino-cyclohexylmethyl)-cyclohexylamino]-sodium ethanesulfonate, N-(2-aminoethyl)-aminoethyl At least one of sodium alkanesulfonate, sodium ethylenediaminoethanesulfonate, sodium 2,4-diaminobenzenesulfonate, and sodium 2,6-diaminobenzenesulfonate.

Preferably, the epoxy alcohol is glycidyl alcohol and/or epoxy butanol.

The second aspect of the present invention provides the method for preparing water-based ink resin by above-mentioned water-based ink composition, wherein, the method comprises the following steps:

(1) Carry out the first reaction of hydroxyl-terminated polyamide-ether resin and diisocyanate, and add dibasic alcohol for the second reaction, drop to room temperature and add acetone, then add dibasic amine sulfonate for the third reaction, And add epoxy alcohol and carry out the 4th reaction, obtain polymer;

(2) The polymer is dispersed by contacting with water, and the acetone is removed to obtain a water-based ink resin.

According to specific embodiments of the present invention, the method for preparing water-based ink resin by above-mentioned water-based ink composition can be:

(1) Add hydroxyl-terminated polyamide-ether resin and diisocyanate into reaction kettle I, heat to 80-100°C, react for 1-2 hours, add diol and react for 1-2 hours, drop to room temperature and add appropriate amount of acetone Reduce the viscosity of the reactant, add diamine sulfonate, stir and react at room temperature for 0.5-1 hour, raise the temperature to 60-70° C., add epoxy alcohol and react for 1-2 hours to prepare a polymer.

(2) Add water to Reactor II, pour the polymer in Reactor I into Reactor II under stirring, continue to stir and disperse at room temperature for 0.5 to 1 hour, remove acetone by vacuuming, and obtain the water-based ink resin.

The third aspect of the present invention provides the water-based ink resin prepared by the above method.

The fourth aspect of the present invention provides the application of the above water-based ink resin in inks, coatings and adhesives.

The invention improves the adhesion fastness between the water-based ink resin and the packaging base material by using the hydroxyl-terminated polyamide-ether resin as the soft segment, and avoids the polymer damage caused by the poor hydrolysis resistance of the ester bond when ordinary polyester is used. Degradation problem. Secondly, the present invention reduces the content of hydrophilic groups in the polymer while maintaining the molecular weight of the water-based polyurethane by using dibasic amine sulfonate as the chain extender, thereby improving the water resistance of the water-based ink resin . Moreover, the present invention can carry out subsequent cross-linking and curing of the water-based ink resin by introducing epoxy groups (epoxy alcohols), which greatly improves the adhesion of the water-based ink resin. The combination of the above points reduces the destructive effect of water vapor on the water-based ink resin under high-temperature and high-humidity conditions, and improves the boiling resistance and cooking resistance of the water-based ink produced.

Detailed ways

Neither the endpoints nor any values of the ranges disclosed herein are limited to such precise ranges or values, and these ranges or values are understood to include values approaching these ranges or values. For numerical ranges, between the endpoints of each range, between the endpoints of each range and individual point values, and between individual point values can be combined with each other to obtain one or more new numerical ranges, these values Ranges should be considered as specifically disclosed herein.

A first aspect of the present invention provides a water-based ink composition, wherein, by weight percentage, the composition contains the following components:

In the present invention, the hydroxyl value of the hydroxyl-terminated polyamide-ether resin can be 28 to 56 mg (KOH)/g, and the hydroxyl-terminated polyamide-ether resin under the hydroxyl value is more conducive to improving the water-based ink resin of the present invention. Adhesion fastness to substrate.

In the present invention, the hydroxyl-terminated polyamide-ether resin can be used as a soft segment and has hydrolysis resistance, for example, but not limited to: hydroxyl-terminated polyamide-polyoxyethylene glycol resin, hydroxyl-terminated polyamide -polyoxypropylene glycol resin, hydroxyl-terminated polyamide-polytetrahydrofuran diol resin, hydroxyl-terminated polyamide-propylene oxide-ethylene oxide copolymer glycol resin, hydroxyl-terminated polyamide-tetrahydrofuran-oxypropylene copolymer glycol resin, hydroxyl-terminated polyamide At least one of polyamide-tetrahydrofuran-ethylene oxide copolymerized glycol resins.

In the present invention, the diisocyanate may be, but not limited to: toluene diisocyanate, diphenylmethane diisocyanate, hexamethylene diisocyanate, isophorone diisocyanate, dimethylene benzene diisocyanate, dicyclic at least one of hexylmethane diisocyanate.

In the present invention, the diol as a chain extender may be, but not limited to: 2,2-dimethyl-1,3-propanediol, 2-ethyl-2-butyl-1,3-propanediol , neopentyl glycol, 1,2-cyclohexanediol, 1,3-cyclohexanediol, 1,4-cyclohexanediol, hydrogenated bisphenol A, 2-isopropyl-1,4-butanediol at least one of alcohol, 3-methyl-1,5-pentanediol, and 2,4-dimethyl-1,5-pentanediol.

In the present invention, the dibasic amine sulfonate is used as a chain extender to increase the molecular weight of water-based polyurethane while reducing the content of hydrophilic groups in the polymer. For example, it can be but not limited to: 2-(2-Amino-cyclohexylamino)-sodium ethanesulfonate, 2-[(5-amino-1,3,3-trimethyl-cyclohexylmethyl)-amino]-sodium ethanesulfonate, 2 -[4-(4-amino-cyclohexylmethyl)-cyclohexylamino]-sodium ethanesulfonate, sodium N-(2-aminoethyl)-aminoethanesulfonate, sodium ethylenediaminoethanesulfonate , at least one of sodium 2,4-diaminobenzenesulfonate, and sodium 2,6-diaminobenzenesulfonate.

In the present invention, the epoxy alcohol is aimed at promoting post-crosslinking curing, for example, but not limited to: glycidyl alcohol and/or epoxy butanol.

The second aspect of the present invention provides the method for preparing water-based ink resin by above-mentioned water-based ink composition, wherein, the method comprises the following steps:

(1) Carry out the first reaction of hydroxyl-terminated polyamide-ether resin and diisocyanate, and add dibasic alcohol for the second reaction, drop to room temperature and add acetone, then add dibasic amine sulfonate for the third reaction, And add epoxy alcohol and carry out the 4th reaction, obtain polymer;

(2) The polymer is dispersed by contacting with water, and the acetone is removed to obtain a water-based ink resin.

According to the method of the present invention, the conditions of the first reaction include but are not limited to: a temperature of 80-100° C. and a time of 1-2 hours.

According to the method of the present invention, the conditions of the second reaction include but are not limited to: a temperature of 80-100° C. and a time of 1-2 hours.

According to the method of the present invention, the conditions of the third reaction include but are not limited to: the temperature is room temperature, and the time is 0.5-1 h.

According to the method of the present invention, the conditions of the fourth reaction include but are not limited to: the temperature is 60-70° C., and the time is 1-2 hours.

According to the method of the present invention, the dispersion conditions may include but not limited to: the temperature is room temperature, and the time is 0.5-1 h.

According to the method of the present invention, the purpose of the acetone is to reduce the viscosity of the reactant and to be able to stir evenly. The amount of acetone added depends on the viscosity of the reactant. If the viscosity is too high, the amount of acetone can be increased appropriately. If the viscosity Smaller, then can reduce the consumption of acetone in right amount, because carry out the step of removing acetone in step (2), so the addition of acetone can suitably add as required.

The third aspect of the present invention provides the water-based ink resin prepared by the above method.

The water-based ink resin has good adhesion, good printability, is environmentally friendly and can meet the packaging requirements of different grades of boiling and steaming.

The fourth aspect of the present invention provides the application of the above water-based ink resin in inks, coatings and adhesives.

Wherein, after the ink made of the water-based ink resin of the present invention is used as a packaging substrate, it can meet the requirements of water-resistant and retort-resistant.

The application of the above water-based ink is not limited thereto.

The present invention will be described in detail below by way of examples.

Example 1

(1) 15kg hydroxyl-terminated polyamide-polyoxyethylene glycol resin (hydroxyl value 32mg (KOH)/g), 6kg hydroxyl-terminated polyamide-tetrahydrofuran-propylene oxide copolymerized glycol resin (hydroxyl value 36mg (KOH) /g) and 13kg of toluene diisocyanate were added to Reactor I, heated to 80°C for 2 hours, and then 7kg of 2,2-dimethyl-1,3-propanediol was added to react for 1.2 hours. The viscosity of the reactant, add 10kg of 2-(2-amino-cyclohexylamino)-sodium ethanesulfonate, stir at room temperature for 0.6 hours, heat up to 60°C, add 4kg of glycidyl alcohol and react for 1.8 hours to obtain a polymer .

(2) Add 45 kg of water to the reaction kettle II, pour the polymer in the reaction kettle I into the reaction kettle II under stirring, continue to stir and disperse at room temperature for 0.5 hours, remove acetone by vacuuming, and obtain the water-based ink resin.

Example 2

(1) 27.5kg hydroxyl-terminated polyamide-polyoxypropylene diol resin (hydroxyl value 40mg (KOH)/g), 4kg diphenylmethane diisocyanate and 6kg dicyclohexylmethane diisocyanate are added in the reactor I, After heating to 90°C and reacting for 1.4 hours, add 2kg of 2-ethyl-2-butyl-1,3-propanediol to react for 1 hour, cool down to room temperature and add an appropriate amount of acetone to reduce the viscosity of the reactant, add 7kg of 2-[ (5-amino-1,3,3-trimethyl-cyclohexylmethyl)-amino]-sodium ethanesulfonate, stirred at room temperature for 0.75 hours, raised the temperature to 65°C, added 3.5kg epoxybutanol and reacted for 1.4 hours Polymers are then produced.

(2) Add 50 kg of water to the reaction kettle II, pour the polymer in the reaction kettle I into the reaction kettle II under stirring, continue to stir and disperse at room temperature for 0.6 hours, and remove acetone by vacuuming to obtain a water-based ink resin.

Example 3

(1) Add 35kg of hydroxyl-terminated polyamide-polytetrahydrofuran diol resin (hydroxyl value 28mg (KOH)/g) and 5.5kg of hexamethylene diisocyanate into reactor I, heat to 100°C, and react for 1.8 hours , add 2kg of neopentyl glycol, 4kg of 2,4-dimethyl-1,5-pentanediol to react for 1.4 hours, drop to room temperature and add an appropriate amount of acetone to reduce the viscosity of the reactant, add 2kg of 2-[4-( 4-amino-cyclohexylmethyl)-cyclohexylamino]-sodium ethanesulfonate, stirred at room temperature for 1 hour, raised the temperature to 70°C, added 6 kg of glycidyl alcohol and reacted for 2 hours to obtain a polymer.

(2) Add 45.5kg of water to the reaction kettle II, pour the polymer in the reaction kettle I into the reaction kettle II under stirring, continue to stir and disperse for 0.75 hours at room temperature, and remove the acetone by vacuuming to obtain a water-based ink resin .

Example 4

(1) Add 22.5kg hydroxyl-terminated polyamide-oxypropylene-oxyethylene copolymerized glycol resin (hydroxyl value: 42mg (KOH)/g) and 10.5kg isophorone diisocyanate into reactor I, and heat to 85°C , After reacting for 1.2 hours, add 3kg of 1,2-cyclohexanediol and react for 1.5 hours, drop to room temperature and add an appropriate amount of acetone to reduce the viscosity of the reactant, add 1kg of N-(2-aminoethyl)-aminoethanesulfonate Sodium bicarbonate and 5kg of sodium 2,6-diaminobenzenesulfonate were stirred at room temperature for 0.6 hours, heated to 62°C, and 3kg of epoxybutanol was added to react for 1 hour to obtain a polymer.

(2) Add 55 kg of water to the reaction kettle II, pour the polymer in the reaction kettle I into the reaction kettle II under stirring, continue to stir and disperse at room temperature for 0.8 hours, remove acetone by vacuuming, and obtain the water-based ink resin.

Example 5

(1) Add 24kg hydroxyl-terminated polyamide-tetrahydrofuran-propylene oxide copolymerized glycol resin (hydroxyl value 56mg (KOH)/g) and 15kg dimethylene benzene diisocyanate into reactor I, heat to 95°C, and react After 1.5 hours, add 10kg of 1,3-cyclohexanediol to react for 1.2 hours, drop to room temperature and add an appropriate amount of acetone to reduce the viscosity of the reactant, add 3kg of sodium ethylenediaminoethanesulfonate, stir at room temperature for 0.5 hours, and heat up to At 67°C, add 0.6kg glycidyl alcohol and 0.4kg epoxybutanol to react for 1.4 hours to prepare a polymer.

(2) Add 47kg of water to Reactor II, and under stirring, pour the polymer in Reactor I into Reactor II, continue to stir and disperse at room temperature for 1 hour, and vacuumize to remove acetone to obtain water-based ink resin.

Example 6

(1) Add 20kg of hydroxyl-terminated polyamide-tetrahydrofuran-ethylene oxide copolymerized glycol resin (hydroxyl value 40mg (KOH)/g) and 5kg of dicyclohexylmethane diisocyanate into reactor I, heat to 92°C, and react 1 After one hour, add 4kg of 1,4-cyclohexanediol to react for 2 hours, drop to room temperature and add an appropriate amount of acetone to reduce the viscosity of the reactant, add 2kg of sodium 2,4-diaminobenzenesulfonate, stir and react at room temperature for 0.9 hours, The temperature was raised to 68° C., and 4 kg of epoxybutanol was added to react for 1.5 hours to obtain a polymer.

(2) Add 65 kg of water to the reaction kettle II, pour the polymer in the reaction kettle I into the reaction kettle II under stirring, continue stirring and dispersing at room temperature for 0.9 hours, remove acetone by vacuuming, and obtain the water-based ink resin.

Comparative example 1

According to the method of embodiment 2, the difference is that the 27.5kg hydroxyl-terminated polyamide-polyoxypropylene glycol resin is replaced by 27.5kg polyterephthalic acid-adipic acid-ethylene glycol-butylene glycol (common polyester ), to prepare water-based ink resin.

Comparative example 2

(1) Add 15kg of hydroxyl-terminated polyamide-polyoxyethylene glycol resin, 6kg of hydroxyl-terminated polyamide-tetrahydrofuran-oxypropylene copolymerized glycol resin and 13kg of toluene diisocyanate into the reactor I, and heat it to 80°C for 2 hours. , add 7kg of 2,2-dimethyl-1,3-propanediol to react for 1.2 hours, drop to room temperature and add an appropriate amount of acetone to reduce the viscosity of the reactant, add 10kg of 2-(2-amino-cyclohexylamino)-ethanesulfonic acid Sodium acid, stirred at room temperature for 0.6 hours to obtain a polymer.

(2) Add 45 kg of water to the reaction kettle II, pour the polymer in the reaction kettle I into the reaction kettle II under stirring, continue to stir and disperse at room temperature for 0.5 hours, remove acetone by vacuuming, and obtain the water-based ink resin.

test case 1

The water-based ink was prepared, and its composition and content are shown in Table 1.

Table 1

composition content (1) Water-based ink resin 50g (2) Titanium dioxide 17g (3) Dispersant BYK-180 0.3g (4) water 20g

Preparation process: Stir 25g of water-based ink resin, 17g of titanium dioxide and 0.3g of dispersant BYK-180 evenly, then grind in a sand mill until the fineness is less than 15μm to prepare a color paste, and add the remaining 25g of water-based ink to the color paste Ink resin and 20g of water are stirred evenly and then filtered to obtain a water-based ink.

Preparation of composite packaging base material: the water-based ink resin of Example 1 is made into water-based ink according to the above-mentioned water-based ink preparation method, and the prepared water-based ink is scraped and coated on the surface of the PET film with a silk stick, and after drying, it is coated with two-component polyurethane As the coating adhesive, the aluminized film is combined with the PET film, and the ink layer and the two-component polyurethane are in the middle of the PET film and the aluminized film to obtain a composite packaging substrate.

Boiling resistance test: The composite packaging substrate is boiled in water at 100°C for 30 minutes, and the PET film and the aluminized film are not delaminated.

Retort resistance test: The composite packaging substrate is cooked at 2.321 bar (absolute pressure) and 125°C for 30 minutes, and the PET film and the aluminized film are not delaminated.

Test case 2-6

Composite packaging substrates were prepared according to the method of Test Example 1, and water boiling resistance and retort resistance tests were performed, except that the water-based ink resins of Examples 2-6 were used, and the results were similar to Test Example 1.

Comparative test example 1

Composite packaging substrates were prepared according to the method of Test Example 1 and water boiling resistance and retort resistance tests were carried out. The difference was that when the water-based ink resin of Comparative Example 1 was used, the PET film and the aluminized film were delaminated.

Comparative test example 2

Composite packaging substrates were prepared according to the method of Test Example 1 and water boiling resistance and retort resistance tests were carried out. The difference was that when the water-based ink resin of Comparative Example 2 was used, delamination occurred on the PET film and the aluminized film.

As can be seen from the results of Test Examples 1-6 and Test Example Comparative Examples 1-2, the composite packaging base material prepared from the water-based ink made of the water-based ink resin of the present invention has the performance of boiling resistance and retort resistance, and no layer separation phenomenon. And adopt common resin, do not use the comparative example 1 of hydroxyl-terminated polyamide-ether resin of the present invention, and do not add epoxy alcohol in step (1) and carry out the comparative example 2 of end-capping reaction, in water boiling resistance and boiling resistance test The phenomenon of interlayer peeling occurs in both of them, which cannot meet the requirements of water boiling resistance and retort resistance. That is to say, the present invention makes the main structure of the prepared water-based ink resin have good hydrolysis resistance by selecting hydroxyl-terminated polyamide-ether resin as the soft segment and glycol as the chain extender; The chain agent effectively reduces the content of hydrophilic components in the water-based ink resin and improves the water resistance of the water-based ink resin. The epoxy alcohol terminal epoxy group structure is introduced to improve the adhesion fastness of the ink resin. The above structural features make the water-based ink made of the water-based ink resin have the advantages of water-resistant and retort-resistant after being printed on the packaging substrate.

The preferred embodiments of the present invention have been described in detail above, however, the present invention is not limited thereto. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, including the combination of various technical features in any other suitable manner, and these simple modifications and combinations should also be regarded as the disclosed content of the present invention. All belong to the protection scope of the present invention.

Claims (10)

1. a kind of aqueous ink composition, which is characterized in that by weight percentage, the composition contains following components：

2. aqueous ink composition according to claim 1, wherein the hydroxyl value of the terminal hydroxy group polyamide-ether resin is 28~56mg (KOH)/g；

Preferably, the terminal hydroxy group polyamide-ether resin is terminal hydroxy group polyamides-polyethylene oxide glycol resin, terminal hydroxy group gathers Amide-polyoxypropyleneglycol resin, terminal hydroxy group polyamide-polytetrahydrofuran diol resin, terminal hydroxy group polyamide-oxidation third Alkene-ethylene oxide copolymer glycols resin, terminal hydroxy group polyamide-tetrahydrofuran-propylene oxide copolymer glycols resin, terminal hydroxy group polyamides At least one of amine-tetrahydrofuran-ethylene oxide copolymer glycols resin.

3. aqueous ink composition according to claim 1, wherein the diisocyanate be toluene di-isocyanate(TDI), Methyl diphenylene diisocyanate, hexamethylene diisocyanate, isophorone diisocyanate, dimethylene benzene diisocyanate At least one of ester, dicyclohexyl methyl hydride diisocyanate.

4. aqueous ink composition according to claim 1, wherein the dihydric alcohol is 2,2- dimethyl -1,3- the third two Alcohol, 2- ethyl -2- butyl -1,3- propylene glycol, neopentyl glycol, 1,2- cyclohexanediol, 1,3- cyclohexanediol, 1,4- cyclohexanediol, Hydrogenated bisphenol A, 2- isopropyl -1,4- butanediol, 3- methyl-1, in 5- pentanediol, 2,4- dimethyl -1,5- pentanediol at least It is a kind of.

5. aqueous ink composition according to claim 1, wherein the binary amine sulfonate is 2- (2- amino-ring Own amino)-ethanesulfonic acid sodium, 2- [(5- amino -1,3,3- trimethyl cyclohex methyl)-amino]-ethanesulfonic acid sodium, 2- [4- (4- ammonia Base-cyclohexyl methyl)-Cyclohexylamino]-ethanesulfonic acid sodium, N- (2- amino-ethyl)-aminoethane sulphonic acid sodium, ethylenediamine base ethanesulfonic acid At least one of sodium, 2,4- diamino benzene sulfonic acid sodium, 2,6- diamino benzene sulfonic acid sodium.

6. aqueous ink composition according to claim 1, wherein the epoxy alcohol is epoxy prapanol and/or epoxy fourth Alcohol.

7. the method that the aqueous ink composition as described in any one of claim 1-6 prepares water-based ink resin, wherein This approach includes the following steps：

(1) terminal hydroxy group polyamide-ether resin is carried out first with diisocyanate to react, and dihydric alcohol is added and carries out second instead It answers, be down to room temperature and acetone is added, binary amine sulfonate is then added and carries out third reaction, and epoxy alcohol is added and carries out the 4th Reaction, obtains polymer；

(2) polymer is contacted with water and is dispersed, and remove acetone, obtain water-based ink resin.

8. according to the method described in claim 7, wherein, the condition of first reaction includes：Temperature is 80~100 DEG C, when Between be 1~2h；

It is described second reaction condition include：Temperature is 80~100 DEG C, and the time is 1~2h；

The condition of third reaction includes：Temperature is room temperature, and the time is 0.5~1h；

It is described 4th reaction condition include：Temperature is 60~70 DEG C, and the time is 1~2h；

The condition of the dispersion includes：Temperature is room temperature, and the time is 0.5~1h.

9. the water-based ink resin of the preparation of the method as described in any one of claim 7-8.

10. application of the water-based ink resin as claimed in claim 9 in ink, coating and adhesive.