Reactive printing thickening agent and preparation method thereof

Abstract

The invention discloses a reactive printing thickener and a preparation method thereof. The reactive printing thickener disclosed by the invention is prepared by taking unsaturated acid as a polymeric monomer, white oil as a continuous phase and water as a dispersed phase through reverse phase polymerization and then reverse phase emulsification, the raw materials comprise the following components in parts by weight: 50-85 parts of unsaturated acidic monomer; 70 to 120 parts by weight of liquid caustic soda; 5-45 parts by weight of ammonia water; 1-5 parts by weight of ammonium persulfate; 1-5 parts by weight of sodium hydrogen sulfite; 35 to 90 parts by weight of deionized water; 0.1 to 0.5 part by weight of a cross-linking agent; 1-10 parts by weight of a functional monomer; 60-90 parts by weight of white oil; 5-15 parts by weight of an oil soluble emulsifier; 6-15 parts by weight of a phase inversion agent; and 3-9 parts by weight of a swelling accelerator. The reactive printing thickening agent disclosed by the invention has the advantages of excellent rapid swelling speed, strong thickening capacity and good comprehensive performance.

Description

Technical Field

[0001] The invention relates to the field of textile auxiliaries, in particular to an active printing thickener with high swelling rate and a preparation method thereof. Background Art

[0002] Reactive dye printing is a major category of textile processing, accounting for about 30% of printed textiles. It has the characteristics of simple process, bright color, and complete color spectrum. Reactive printing thickener is an important component of printing paste and a major factor affecting printing effect.

[0003] The printing process includes steps such as printing, drying, steaming, washing, soaping, and drying. Each step is closely connected and coordinated to efficiently complete the entire production process. With the continuous expansion of the scale of printing production, factories have put forward higher requirements for production efficiency. The swelling rate of the thickener seriously affects the level of production effect, so it becomes a key issue that needs to be solved during use. The swelling rate of the thickener refers to the average time required to reach the required viscosity during the dissolution of the thickener. The shorter the swelling time, the faster the swelling rate. Although the scale of printing production continues to expand, the current process level and degree of automation of dyeing factories have not been improved accordingly, and most of them are still mainly artificial materials. We know that printing color paste needs to reach a certain viscosity before it can be used. If the swelling rate of the thickener is slow, it is obvious that the viscosity will not meet the printing requirements within a certain period of time. Workers either wait for a period of time until the thickener continues to swell to a qualified viscosity, or add a certain amount of thickener to allow the slurry to quickly reach the required viscosity. However, after the added thickener is completely swollen, the viscosity may exceed the viscosity required for printing, which does not meet the production requirements, and water has to be added to reduce the viscosity. Such repeated operations in production not only waste time and increase production costs, but also make the production process extremely cumbersome, seriously reduce production efficiency, and are not conducive to the control of printing quality. The printing process requires each process to be closely connected. If the swelling of the thickener is delayed for a few minutes, the subsequent printing may be delayed or delayed for several hours.

[0004] During the washing and soaping stage, the desizing of the paste will affect the original feel of the fabric. The commercially available active thickeners generally have the disadvantage of making the fabric feel harder than the original fabric. Therefore, increasing the swelling rate of the thickener while also requiring the use of the active thickener not to change the original feel of the fabric has become a problem that printing manufacturers are particularly concerned about and looking forward to solving. Summary of the invention

[0005] In view of the defects of the existing technology, the present invention provides a fast swelling active thickener and a preparation method thereof. To realize the present invention, the following technical scheme is adopted:

[0006] A reactive printing thickener, characterized in that it is prepared by reverse phase polymerization with unsaturated acid as polymerization monomer, white oil as continuous phase and water as dispersed phase and then reverse phase emulsification; the raw materials are used in the following amounts by weight: 50-85 parts of unsaturated acid monomer, 70-120 parts of liquid alkali, 5-45 parts of ammonia water, 1-5 parts of ammonium persulfate and 35-90 parts of deionized water, and the above raw materials are mixed to form an aqueous phase; 0.1-0.5 parts of a cross-linking agent, 1-5 parts of a functional monomer, 60-90 parts of white oil, 5-15 parts of an oil-soluble emulsifier, 6-15 parts of a phase transfer agent and 3-9 parts of a swelling rate accelerator.

[0007] Preferably, the unsaturated acidic monomer is one or more of the following compounds: acrylic acid, methacrylic acid, and maleic acid.

[0008] Preferably, the functional monomer is a mixture of ditrimethylolpropane acrylate and the following compound (I), and the weight ratio of ditrimethylolpropane acrylate to compound (I) is 0.5:5-1:5.

[0009]

[0010] Compound (I)

[0011] Wherein R1 is H or CH3, R2 is C2H4O or C3H6O, and n is an integer of 10-16.

[0012] Preferably, the crosslinking agent is one or more of the following compounds: diallyl phthalate, methylenebisacrylamide, butoxymethylacrylamide, N-hydroxymethylacrylamide, and dibutylene dimethacrylate.

[0013] The oil-soluble emulsifier is preferably a surfactant with an HLB value of 3-8, for example, one or more of the following compounds: sorbitan fatty acid esters, such as sorbitan monooleate, sorbitan monostearate, and sorbitan monopalmitate.

[0014] Preferably, the phase transfer agent is one or more of alkoxylated plant polyphenol derivatives or castor oil polyoxyethylene ether nonionic surfactants: such as alkoxylated plant polyphenols NSF-4, NSF-5, NSF-6, NSF-7, NSS1807, NSS1807N, castor oil polyoxyethylene ether EL20, EL30, EL40, EL60.

[0015] Preferably, the swelling rate promoter is one or more of branched alcohol ethoxylate nonionic surfactants, such as isomeric decanol ethoxylate and isomeric tridecanol ethoxylate.

[0016] The present invention also provides a method for preparing the above-mentioned reactive printing thickener, and the specific steps are as follows:

[0017] (1) Preparation of aqueous phase: The unsaturated acidic monomer is first neutralized with liquid alkali, then neutralized with ammonia water to pH = 5-8, and ammonium persulfate and deionized water are added and mixed to obtain an aqueous phase;

[0018] (2) Pre-emulsification: adding the aqueous phase of step (1) to the oil phase consisting of an oil-soluble emulsifier, a functional monomer, a cross-linking agent and white oil, stirring and emulsifying at a high speed of 2000-5000 rpm for 30-60 minutes to obtain a stable pre-emulsion;

[0019] (3) Polymerization: Sodium bisulfite solution is added dropwise to the pre-emulsion of step (2) at 30-50°C, the reaction is gradually initiated, the system temperature gradually increases, the reaction temperature is controlled not to exceed 80°C, and the reaction time is 30-60 minutes. After the reaction is completed, the system temperature naturally decreases, and the polymerization solution is obtained after keeping the temperature at 55-65°C for 1-3 hours.

[0020] (4) Phase inversion: The polymer solution of step (3) is cooled to 20-30° C., a phase inversion agent is added, and the mixture is inverted and emulsified for 30-60 minutes. Then, a swelling rate accelerator is added, and the emulsification is continued for 30-60 minutes to obtain the finished product. DETAILED DESCRIPTION

[0021] The present invention will be further described below in conjunction with the embodiments.

[0022] After neutralizing 50-85g of unsaturated acidic monomer with 70-120g of liquid alkali, 5-45g of ammonia water is added to neutralize to pH=5.0-8.0, 1-5g of ammonium persulfate and 35-90g of deionized water are added, and mixed to obtain an aqueous phase. The aqueous phase is added to an oil phase composed of 5-15g of an oil-soluble emulsifier, 0.1-0.5g of a cross-linking agent, 1-10g of a functional monomer, and 60-90g of white oil under high-speed stirring, and emulsified for 30-60 minutes under high-speed stirring at 2000-5000 rpm to obtain a stable pre-emulsion. When the temperature of the pre-emulsion in the reactor is 30-50° C., 1-5 g of sodium bisulfite aqueous solution is started to be added dropwise, the reaction is gradually initiated, the system temperature gradually increases, cooling is started, the reaction temperature of the reactor is controlled within 80° C., the reaction time is 30-60 minutes, the reaction temperature is gradually reduced, and the temperature is kept at 55-65° C. for 1-3 hours, cooled to room temperature, 6-15 g of a phase inversion agent is added, inversion emulsification is performed for 30-60 minutes, 3-9 g of a swelling rate accelerator is added, and emulsification is continued for 30-60 minutes to obtain a finished product.

[0023] Example

[0024] In each embodiment, all raw materials and fabrics are commercially available, among which polyethylene glycol diacrylate (n=14), polypropylene glycol diacrylate (n=12), and polyethylene glycol dimethacrylate (n=14) are products of Shanghai Aladdin Biochemical Technology Co., Ltd.; isomeric tridecanol polyoxyethylene ether 1307, 1308, 1309, 1310, and isomeric decanol polyoxyethylene ether 1008 are products of Sasol (China) Chemical Co., Ltd.; alkoxy plant polyphenols NSF-4, NSF-5, NSF-6, NSF-7, NSS1807, and NSS1807N are products of Changshu Naisu Biotechnology Co., Ltd.; castor oil polyoxyethylene ether EL20, EL30, EL40, and EL60 are products of Jiangsu Hai'an Petrochemical Company; methylene bisacrylamide is a product of Aisen China Flocculant Co., Ltd.; No. 3 white oil and No. 7 white oil are products of Hangzhou Flash Point Trading Co., Ltd.

[0025] If not otherwise specified, % refers to % by weight.

[0026] 1. Printing process

[0027] Fabric used: Woven cotton semi-bleached cloth

[0028] Printing equipment: flat screen magnetic rod printing prototype machine (Shanghai Yipai Printing and Dyeing Technology Co., Ltd., model: RO-MP2000) (magnetic rod diameter: 8 mm, magnetic force: 20 N / m, speed: 50 m / min), 120 mesh screen.

[0029] Steaming equipment: fully automatic steam generator / high temperature steaming prototype (Shanghai Yangnuo Boiler Manufacturing Co., Ltd., model: YN18-0.7-D).

[0030] formula:

[0031] Black Formula

[0032]

[0033] Blue Formula

[0034]

[0035] Preparation of original paste: weigh 6g thickener in a plastic measuring cup, add pure water to 200g. Use a beater (Jiangsu Jinding Electric Tools Group Co., Ltd., model Z4113) to beat until it is uniform and free of white particles. This is the original paste.

[0036] Processing technology: printing → drying → steaming → washing → soap washing (Yakesa SW conc (Shanghai Yayun Textile Chemical Co., Ltd.): 1g / L (95℃x5min) → washing → drying.

[0037] 2. Application performance testing

[0038] Test equipment: NDJ-8S Rotational Viscometer (Shanghai Jitai Electronic Technology Co., Ltd.)

[0039] Test conditions: No. 4 rotor, 6 rpm

[0040] 3. White pulp test

[0041] This shall be carried out in accordance with the provisions of 5.3 of HG / T 4442-2012.

[0042] Weigh 5g of thickener in a plastic measuring cup, add pure water to 200g, use a beater (Jiangsu Jinding Electric Tools Group Co., Ltd., model Z4113) to beat until there are no white particles, and then use a NDJ-8S viscometer (4# rotor, 6rpm) to measure the viscosity of the white slurry after keeping the temperature at 25°C in a biochemical incubator (Shanghai Yuejin Medical Equipment Co., Ltd., model HPX-111-250).

[0043] 4. Color paste test

[0044] This shall be carried out in accordance with the provisions of 5.3 of HG / T 4442-2012.

[0045] Weigh 10g thickener on a balance, add pure water to 100g, use a pulper (Jiangsu Jinding Electric Tools Group Co., Ltd., model Z4113) to pulp until there are no white particles, then add 10g reactive black RHH or reactive brilliant blue P-3R (the dye is weighed with weighing paper, and the dye is added while the white pulp is stirred by the pulper to form a vortex to avoid agglomeration of the dye), 20g urea and 6g baking soda dissolved in water, and finally add pure water to 200g. Stir evenly, keep the temperature at 25°C in a biochemical incubator (Shanghai Yuejin Medical Equipment Co., Ltd., model HPX-111-250), and measure the viscosity of the color paste with an NDJ-8S viscometer (4# rotor, 6rpm).

[0046] 5. Hand feel evaluation

[0047] The feel evaluation results of five experienced people were combined and the average value was taken to grade it from 1 to 5, with 1 being the worst and 5 being the best. The feel of the untreated original cloth was rated as 5.

[0048] 6. Permeability

[0049] Use Datacolor colorimeter to test the KS value of the front and back of the printed fabric, wavelength range 360-700nm; wavelength interval: 10nm. Calculate the fabric printing permeability according to the following formula. The larger the value, the better the permeability.

[0050]

[0051] 7. Color yield

[0052] Tested with Datacolor colorimeter.

[0053] The samples treated with reactive printing thickener were used as test samples and tested on a Datacolor colorimeter. The results were evaluated using intensity data. The larger the value, the darker the color.

[0054] 8. Swelling rate

[0055] Add 20g urea, 6g baking soda, and 10g active dye to 100g water and stir evenly, then add 10g active thickener, and then add water to 200g. Put it into the mixer and stir at 1000r / min. Record the number of minutes from the start of the mixer to the required viscosity value of 15000cps (NDJ-8S viscometer (4# rotor, 6rpm)). The shorter the number of minutes, the faster the swelling rate.

[0056] Example 1

[0057] Under stirring at room temperature, 50 grams of acrylic acid was neutralized with 78 grams of liquid alkali and 5 grams of ammonia water to a pH value of 5.5, and 1.5 grams of ammonium persulfate and 41 grams of deionized water were added and mixed to obtain an aqueous phase. The aqueous phase was added to an oil phase consisting of 8 grams of sorbitan monooleate (HLB value 4.3), 0.5 grams of methylenebisacrylamide, 0.5 grams of ditrimethylolpropane acrylate, 4 grams of polyethylene glycol diacrylate (n=14), and 68 grams of No. 3 white oil under high-speed stirring, and high-speed emulsification was performed at 3900 rpm for 30 minutes to obtain a stable pre-emulsion. Under nitrogen protection, the pre-emulsion in the reactor was heated to 30°C, and 10 g of a 10% aqueous solution of sodium bisulfite was slowly added dropwise at a rate of 2 g / min. The system temperature gradually increased and reached the highest point after 20 minutes of reaction. Appropriate cooling control was performed so that the reaction temperature did not exceed 80°C. After continuing the reaction for 20 minutes, the temperature gradually decreased, and the temperature was kept at 60°C for 2 hours. After cooling to room temperature, 10 g of alkoxylated plant polyphenols NSS1807 was added and emulsified for half an hour, and then 3 g of isomeric tridecanol polyoxyethylene ether 1307 was added and emulsified for half an hour to obtain the finished product.

[0058] Example 2

[0059] Under stirring at room temperature, 55 g of methacrylic acid was neutralized with 90 g of liquid alkali and 15 g of ammonia water to a pH value of 5.5, and 2 g of ammonium persulfate and 41 g of deionized water were added and mixed to obtain an aqueous phase. The aqueous phase was added to an oil phase consisting of 8.5 g of sorbitan monostearate (HLB value 4.7), 0.2 g of diallyl phthalate, 0.6 g of ditrimethylolpropane acrylate, 4.2 g of polypropylene glycol diacrylate (n=12), and 70 g of No. 3 white oil under high-speed stirring, and high-speed emulsification was performed at 3900 rpm for 30 minutes to obtain a stable pre-emulsion. Under nitrogen protection, the pre-emulsion in the reactor was heated to 30°C, and 10 g of a 10% aqueous solution of sodium bisulfite as an initiator was slowly added dropwise at a rate of 2 g / min. The system temperature gradually increased and reached the highest point after 20 minutes of reaction. Appropriate cooling control was performed so that the reaction temperature did not exceed 80°C. After continuing the reaction for 20 minutes, the temperature gradually decreased, and the temperature was kept at 60°C for 2 hours. After cooling to room temperature, 8 g of alkoxylated plant polyphenols NSF-4 and 2 g of alkoxylated plant polyphenols NSS1807 were added and emulsified for half an hour by reverse emulsification, and then 4 g of isomeric tridecanol polyoxyethylene ether 1310 was added and emulsified for half an hour to obtain the finished product.

[0060] Example 3

[0061] Under stirring at room temperature, 55 grams of maleic acid were neutralized with 85 grams of liquid alkali and 8 grams of ammonia water to a pH value of 6.0, and 1.5 grams of ammonium persulfate and 45 grams of deionized water were added and mixed to obtain an aqueous phase. The aqueous phase was added to an oil phase consisting of 7.5 grams of sorbitan monostearate (HLB value 4.7), 0.5 grams of butoxymethyl acrylamide, 0.5 grams of ditrimethylolpropane acrylate, 4 grams of polypropylene glycol diacrylate (n=12), and 60 grams of No. 3 white oil under high-speed stirring, and high-speed emulsification was performed at 3900 rpm for 30 minutes to obtain a stable pre-emulsion. Under nitrogen protection, the pre-emulsion in the reactor was heated to 40°C, and 15 g of a 10% aqueous solution of sodium bisulfite was slowly added at a rate of 2 g / min. The system temperature gradually increased and reached the highest point after 20 minutes of reaction. Appropriate cooling control was performed so that the reaction temperature did not exceed 80°C. After continuing the reaction for 20 minutes, the temperature gradually decreased, and the temperature was kept at 60°C for 2 hours. After cooling to room temperature, 6 g of castor oil polyoxyethylene ether EL40 and 4 g of alkoxylated plant polyphenols NSF-6 were added and emulsified for half an hour by reverse emulsification, and then 6 g of isomeric decanol polyoxyethylene ether 1008 was added and emulsified for half an hour to obtain the finished product.

[0062] Example 4

[0063] Under stirring at room temperature, 68 grams of acrylic acid was neutralized with 90 grams of liquid alkali and 15 grams of ammonia water to a pH value of 6.0, and 1 gram of ammonium persulfate and 80 grams of deionized water were added and mixed to obtain an aqueous phase. The aqueous phase was added to an oil phase consisting of 14 grams of sorbitan monooleate (HLB value 4.3), 0.5 grams of butoxymethyl acrylamide, 0.5 grams of ditrimethylolpropane acrylate, 4 grams of polyethylene glycol dimethacrylate (n=14), and 70 grams of No. 3 white oil under high-speed stirring, and high-speed emulsification was performed at 3900 rpm for 30 minutes to obtain a stable pre-emulsion. Under nitrogen protection, the pre-emulsion in the reactor was heated to 40°C, and 15 g of a 10% aqueous solution of sodium bisulfite as an initiator was slowly added dropwise at a rate of 2 g / min. The system temperature gradually increased and reached a maximum after 20 minutes of reaction. Appropriate cooling control was performed so that the reaction temperature did not exceed 80°C. After continuing the reaction for 20 minutes, the temperature gradually decreased, and the temperature was kept at 60°C for 2 hours. After cooling to room temperature, 6 g of alkoxylated plant polyphenols NSF-5 and 4 g of castor oil polyoxyethylene ether EL60 were added, and the mixture was emulsified for half an hour by reverse phase emulsification. Then, 3 g of isomeric tridecanol polyoxyethylene ether 1310 was added and emulsified for half an hour to obtain the finished product.

[0064] Example 5

[0065] Under stirring at room temperature, 65 grams of acrylic acid was neutralized with 80 grams of liquid alkali and 35 grams of ammonia water to a pH value of 6.5, and 3 grams of ammonium persulfate and 75 grams of deionized water were added and mixed to obtain an aqueous phase. The aqueous phase was added to an oil phase consisting of 15 grams of sorbitan monooleate (HLB value 4.3), 0.5 grams of methylenebisacrylamide, 1 gram of ditrimethylolpropane acrylate, 4 grams of polyethylene glycol dimethacrylate (n=14), and 75 grams of No. 7 white oil under high-speed stirring, and high-speed emulsification was performed at 3900 rpm for 30 minutes to obtain a stable pre-emulsion. Under nitrogen protection, the pre-emulsion in the reactor was heated to 50°C, and 20 grams of a 10% aqueous solution of sodium bisulfite as an initiator was slowly added dropwise at a rate of 2 g / min. The system temperature gradually increased and reached the highest point after 20 minutes of reaction. Appropriate cooling control was performed so that the reaction temperature did not exceed 80°C. After continuing the reaction for 20 minutes, the temperature gradually decreased, and the temperature was kept at 60°C for 2 hours. After cooling to room temperature, 8 grams of alkylated plant polyphenols NSS1807 and 4 grams of alkylated plant polyphenols NSF-7 were added, and the mixture was emulsified for half an hour by reverse phase emulsification. Then, 5 grams of isomeric tridecanol polyoxyethylene ether 1309 were added and emulsified for half an hour to obtain the finished product.

[0066] Example 6

[0067] Under stirring at room temperature, 60 grams of methacrylic acid was neutralized to pH 6.5 with 85 grams of liquid alkali and 25 grams of ammonia water, and 2 grams of ammonium persulfate and 65 grams of deionized water were added and mixed to obtain an aqueous phase. The aqueous phase was added to an oil phase consisting of 12 grams of sorbitan monopalmitate (HLB value 4.3), 0.2 grams of methylenebisacrylamide, 0.8 grams of ditrimethylolpropane acrylate, 4 grams of polyethylene glycol dimethacrylate (n=14), and 70 grams of No. 7 white oil under high-speed stirring, and high-speed emulsification was performed at 3900 rpm for 30 minutes to obtain a stable pre-emulsion. Under nitrogen protection, the pre-emulsion in the reactor was heated to 50°C, and 20 grams of a 10% aqueous solution of sodium bisulfite as an initiator was slowly added dropwise at a rate of 2 g / min. The system temperature gradually increased and reached the highest point after 20 minutes of reaction. Appropriate cooling control was performed so that the reaction temperature did not exceed 80°C. After continuing the reaction for 20 minutes, the temperature gradually decreased, and the temperature was kept at 60°C for 2 hours. After cooling to room temperature, 6 grams of alkoxylated plant polyphenols NSF-6 and 4 grams of alkoxylated plant polyphenols NSF-7 were added, and the mixture was emulsified by reverse phase for half an hour. Then, 6 grams of isomeric tridecanol polyoxyethylene ether 1308 were added and emulsified for half an hour to obtain the finished product.

[0068] The performance of the products obtained in the above examples was tested, and the results are shown in the following Tables 1-3.

[0069] Table 1 Swelling rate

[0070] Serial number Swelling rate, min (black) Swelling rate, min (blue) Example 1 3 2 Example 2 3 2 Example 3 3 2 Example 4 3 2 Example 5 4 3 Example 6 4 3 Market Sample 1 10 7 Market Sample 2 17 15

[0071] Table 2 Thickening and printing effects (blue)

[0072]

[0073] Note: The untreated original fabric is rated as level 5

[0074] Table 3 Thickening and printing effects (black)

[0075]

[0076] Note: The untreated original fabric is rated as level 5

[0077] It can be seen from the above table that the active printing thickener of the present invention has a fast swelling speed, which is far superior to the market sample. It also has excellent thickening ability and deep color yield. The fabric treated with the active printing thickener of the present invention basically maintains the original feel and style of the original fabric after washing and soaping, and has a soft feel.

[0078] The above is only a preferred embodiment of the present invention. Any simple modification, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention fall within the protection scope of the present invention.

Claims

1. A reactive printing thickener, characterized in that: The unsaturated acid is used as the polymerization monomer, white oil is used as the continuous phase, and water is used as the dispersed phase, and reverse phase polymerization is carried out and then reverse phase emulsification is performed; the raw material amounts are as follows in parts by weight: 50-85 parts by weight of unsaturated acidic monomer; Liquid caustic soda 70-120 parts by weight; 5-45 parts by weight of aqueous ammonia; Ammonium persulfate 1-5 parts by weight; Sodium bisulfite 1-5 parts by weight; Deionized water 35-90 parts by weight; 0.1-0.5 parts by weight of crosslinking agent; 1-10 parts by weight of functional monomer; 60-90 parts by weight of white oil; 5-15 parts by weight of oil-soluble emulsifier; 6-15 parts by weight of phase inversion agent; Swelling promoter 3-9 parts by weight.

2. The reactive printing thickener according to claim 1, characterized in that The unsaturated acidic monomer is one or more of the following compounds: acrylic acid, methacrylic acid, and maleic acid.

3. The reactive printing thickener according to claim 1, characterized in that The functional monomer is a mixture of ditrimethylolpropane acrylate and the following compound (I), and the weight ratio of ditrimethylolpropane acrylate to compound (I) is 0.5:5-1:

5. Wherein R1 is H or CH3, R2 is C2H4O or C3H6O, and n is an integer of 10-16.

4. The reactive printing thickener according to claim 1, characterized in that The crosslinking agent is one or more of the following compounds: diallyl phthalate, methylenebisacrylamide, butoxymethylacrylamide, N-hydroxymethylacrylamide, and dibutylene dimethacrylate.

5. The reactive printing thickener according to claim 1, characterized in that The oil-soluble emulsifier is a sorbitan fatty acid ester with an HLB value of 3-8.

6. The reactive printing thickener according to claim 5, characterized in that: The sorbitan fatty acid ester is one or more of sorbitan monooleate, sorbitan monostearate and sorbitan monopalmitate.

7. The reactive printing thickener according to claim 1, characterized in that: The phase transfer agent is one or more of alkoxylated plant polyphenol derivatives or castor oil polyoxyethylene ether nonionic surfactants.

8. The reactive printing thickener according to claim 1, characterized in that The swelling promoter is a branched alcohol ethoxylate nonionic surfactant.

9. The reactive printing thickener according to claim 8, characterized in that: The swelling promoter is one or more of the following compounds: isomeric decanol ethoxylate and isomeric tridecanol ethoxylate.

10. The method for preparing the reactive printing thickener according to any one of claims 1 to 9, characterized in that: The process comprises the following reaction steps: (1) Preparation of aqueous phase: The unsaturated acidic monomer is first neutralized with liquid alkali, then neutralized with ammonia water to pH = 5-8, and ammonium persulfate and deionized water are added and mixed to obtain an aqueous phase; (2) Pre-emulsification: adding the aqueous phase of step (1) to the oil phase consisting of an oil-soluble emulsifier, a functional monomer, a cross-linking agent and white oil, stirring and emulsifying at 2000-5000 rpm for 30-60 minutes to obtain a stable pre-emulsion; (3) Polymerization: adding a sodium bisulfite solution dropwise to the pre-emulsion of step (2) at 30-50° C. to initiate a reaction, controlling the reaction temperature not to exceed 80° C. for a reaction time of 30-60 minutes, and maintaining the temperature at 55-65° C. for 1-3 hours after the reaction to obtain a polymer solution; (4) Phase inversion: The polymer solution of step (3) is cooled to 20-30° C., a phase inversion agent is added, and the mixture is inverted and emulsified for 30-60 minutes. Then, a swelling rate accelerator is added, and the emulsification is continued for 30-60 minutes to obtain the finished product.

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