Wax-imitating printing paste for polyester and preparation method and application thereof

Abstract

The application discloses polyester wax-like printing paste and a preparation method and application thereof, and belongs to the field of printing paste. The polyester wax-like printing paste comprises 50-70 parts of anionic sodium alginate, 10-30 parts of a cationic polymer thickening agent, 5-10 parts of a polyhydroxy crosslinking agent and 1-3 parts of a penetrating agent. The anionic sodium alginate is obtained by etherification reaction of sodium alginate and an anionic etherification agent. The cationic polymer thickening agent is obtained by copolymerization of a cationic monomer, a nonionic monomer and a hydrophilic organic silicon monomer. The polyester wax-like printing paste has strong water holding property and good rheological property, and is used for wax-like printing, has good pattern definition, good level dyeing property, bright color and double-sided printing effect, and has soft hand feeling.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of textile production, and particularly relates to a paste for polyester wax-printed imitation and a preparation method and application thereof. BACKGROUND

[0002] Wax printing is an ancient traditional folk textile printing and dyeing handicraft of China, and is one of the three ancient printing techniques in China. The existing process is to draw flowers on cotton fabric with a wax knife dipped in molten wax, and then to immerse in blue and indigo, so that the wax is dyed away, and the fabric not attached by the wax is dyed with dye color; the fabric attached by the wax is not dyed, and the fabric surface presents a variety of patterns of blue background and white flowers or white background and blue flowers. Due to the penetration of wax, the color will transition from nothing to something. At the same time, in the immersion, the wax as a resist agent naturally cracks, making the fabric surface present a special "ice pattern", which is natural and attractive. The pattern and design of such wax-printed products have a strict structure, smooth lines, strong decoration and appreciation, and a distinct national style.

[0003] However, the conventional wax printing process has low physical property indexes such as color fastness, and a large amount of wastewater and waste liquid is discharged, because most of the wax printing production processes are pure manual operation. Therefore, with the continuous development of printing and dyeing technology, manual wax printing cannot meet the needs of people's production and life, and thus wax-printed imitation is born.

[0004] Wax-printed imitation is to directly use printing method to print products similar to the style of true wax imitation, and the color of the wax-printed imitation fabric is relatively bright and consistent on both sides. Wax pattern is the spiritual soul of wax-printed imitation fabric, and the quality of the wax-printed imitation effect depends on the fineness of the pattern, so the permeability, color yield and pattern fineness of the printing paste for wax-printed imitation should meet high requirements. Therefore, the printing paste for wax-printed imitation should have the advantages of high color yield, good permeability, clear printing outline, good level dyeing, good hand feeling and the like.

[0005] So far, the printing pastes used in China include sodium alginate, cellulose derivatives, starch derivatives and the like. Sodium alginate is an ideal and widely used printing paste, and its biggest feature is that it does not react with dyes, and the dyes are easy to transfer to the fiber, so that the color yield of printing is high, and the printing hand feeling is good. However, with the continuous improvement of printing technology, the use of sodium alginate alone cannot meet people's demand for high-quality textiles, so it is urgent to find a paste with low cost and capable of printing fine patterns. SUMMARY

[0006] Based on the technical problems in the background art, the present application provides a paste for polyester wax-printed imitation and a preparation method and application thereof. The printing paste has strong water holding property and good rheological property, and is used for wax-printed imitation with good pattern definition, good level dyeing, bright color, double-sided printing effect and soft hand feeling of the printed fabric.

[0007] The present application provides a wax-like printing paste for polyester, and components and weight parts of the wax-like printing paste include: 50-70 parts of anionized sodium alginate, 10-30 parts of cationic polymer thickening agent, 5-10 parts of polyhydroxy crosslinking agent, and 1-3 parts of penetrating agent.

[0008] The anionized sodium alginate is obtained by etherification reaction of sodium alginate and anion etherification agent; and the cationic polymer thickening agent is obtained by copolymerization of cationic monomer, nonionic monomer and hydrophilic organic silicon monomer.

[0009] In the present application, the printing paste is compounded by anionized sodium alginate, cationic polymer thickening agent, polyhydroxy crosslinking agent and penetrating agent; the anionized sodium alginate and the cationic polymer thickening agent form electrostatic attraction, and the two are compounded and crosslinked to form a network structure, which increases the water retention and viscosity of the obtained printing paste, and reduces the penetration phenomenon in the printing process, so that the pattern profile is clearer, and the wax-like printing style is better embodied; in addition, the obtained printing paste has enhanced hydrophilicity, the paste is more easily removed from the fabric during the cleaning process, the paste removal rate is increased, the residual paste on the fabric is reduced, and the fabric hand becomes softer.

[0010] Preferably, the anion etherification agent is at least one of sodium chloroacetate, sodium 2-chloroethyl sulfonate or sodium 3-chloro-2-hydroxypropyl sulfonate.

[0011] Preferably, the weight ratio of the sodium alginate to the anion etherification agent is 1:0.1-0.3.

[0012] Preferably, the etherification reaction is carried out under alkaline conditions, the reaction temperature is 30-50℃, and the reaction time is 1-5h.

[0013] Preferably, the structure of the anionized sodium alginate is as follows:

[0014]

[0015] wherein R1, R2, R3 or R4 is independently hydrogen or a group containing carboxylate or sulfonate, and m and n are integers greater than 0.

[0016] In the present application, the sodium alginate is modified by anionization after reaction with anion etherification agent; since the surface of the sodium alginate is grafted with anion groups, the dispersion is better when the paste is formed, and the anionized sodium alginate can form electrostatic adsorption with the cationic polymer thickening agent to form a crosslinked structure, which enhances the film-forming property, viscosity, paste removal rate and printing uniformity of the obtained printing paste.

[0017] Preferably, the cationic monomer is at least one of diallyl dimethyl ammonium chloride, acryloyloxyethyl trimethyl ammonium chloride or (3-acrylamidopropyl) trimethyl ammonium chloride; the non-ionic monomer is at least one of acrylamide, methacrylamide, N-vinyl methyl acetamide, ethyl acrylate, butyl acrylate or n-octyl acrylate; the hydrophilic silicone monomer is obtained by a hydrosilylation reaction of a hydrogen-containing silicone oil and polyethylene glycol diallyl ether;

[0018] Preferably, the mass ratio of the cationic monomer, the non-ionic monomer and the hydrophilic silicone monomer is 1:5-10:5-10.

[0019] In the present application, the cationic monomer, the non-ionic monomer and the hydrophilic silicone monomer are used as raw materials to copolymerize to obtain the cationic polymer thickener, which has good thickening effect, good electrolyte resistance and anti-permeation performance, soft hand feeling, does not affect the softness of the fabric itself and has good comprehensive performance.

[0020] Preferably, the polyhydroxy crosslinking agent is at least one of hydroxyethylene diphosphonic acid, polyethylene glycol or polyethylene glycol methyl ether.

[0021] Preferably, the penetrating agent is at least one of a fatty alcohol polyoxyethylene ether penetrating agent JFC, an alkyl phenol polyoxyethylene ether penetrating agent JFC-1, a condensate of a fatty alcohol and ethylene oxide penetrating agent JFC-2 or a polyoxyethylene ether compound penetrating agent JFC-S.

[0022] The present application also provides a preparation method of the above-mentioned polyester wax-like printing paste, which comprises uniformly mixing anionic sodium alginate, a cationic polymer thickener, a polyhydroxy crosslinking agent and a penetrating agent to obtain the polyester wax-like printing paste.

[0023] The present application also provides an application of the above-mentioned polyester wax-like printing paste in polyester wax-like printing, which comprises mixing the printing paste in water to obtain printing slurry, mixing the printing slurry, a weak base, a resist salt and reactive dyes in water to obtain printing color paste, and printing the printing color paste on a polyester fabric.

[0024] Preferably, the weak base is at least one of monosodium citrate, disodium citrate, trisodium citrate, sodium bicarbonate or sodium carbonate; the resist salt is resist salt S or resist salt K; and the reactive dye is at least one of monochloro-s-triazine reactive dye, ethylene sulfone type reactive dye or monochloro-s-triazine and ethylene sulfone type double active group reactive dye.

[0025] Compared with the prior art, in the application, anionic sodium alginate is compounded with cationic polymer thickening agent to prepare a wax-like printing paste for polyester, which improves the printing performance of the paste, and the printed pattern obtained after printing is clear, has high color yield, good permeability, good hand feeling, clearer outline, and is easy to wash off. DETAILED DESCRIPTION

[0026] In the following, the technical solutions of the application are described in detail through specific examples.

[0027] Example 1

[0028] The wax-like printing paste for polyester provided in the example comprises the following components and weight parts: 60 parts of anionic sodium alginate, 20 parts of cationic polymer thickening agent, 7 parts of hydroxyethylidene diphosphonic acid, and 2 parts of fatty alcohol polyoxyethylene ether penetrant JFC.

[0029] The anionic sodium alginate is prepared by the following method: sodium alginate is added to water to completely dissolve, sodium hydroxide with a weight of 20 wt% of the sodium alginate is added to make the solution alkaline, the solution is heated to 50℃ in a water bath, and then a sodium chloroacetate aqueous solution with a weight of 10 wt% of the sodium alginate is added dropwise, the solution is stirred for 3h, dilute hydrochloric acid is added to make the solution neutral, ethanol is added to precipitate the product, the product is filtered, washed with ethanol, and dried, to obtain the anionic sodium alginate.

[0030] The cationic polymer thickening agent is prepared by the following method: polyethylene glycol diallyl ether is added to toluene to completely dissolve, chloroplatinic acid with a weight of 0.02 wt% of the polyethylene glycol diallyl ether is added, the solution is heated to 110℃, and then hydrogen-containing silicone oil with a weight of 1.5 times that of the polyethylene glycol diallyl ether is added dropwise, the solution is stirred for 8h, the solution is washed with methanol three times, and then the solution is distilled under reduced pressure, to obtain a hydrophilic silicone monomer; acryloyloxyethyl trimethyl ammonium chloride, acrylamide, ethyl acrylate, and the hydrophilic silicone monomer are added to water in a mass ratio of 1:5:2:6, the solution is heated to 80℃, and then benzoyl peroxide with a weight of 10 wt% of the acryloyloxyethyl trimethyl ammonium chloride is added, the solution is stirred for 6h, the solution is distilled under reduced pressure, the product is precipitated with diethyl ether, the product is filtered, washed with ethanol, and dried, to obtain the cationic polymer thickening agent.

[0031] The example also provides a method for printing the wax-like printing paste for polyester, which comprises the following steps: the anionic sodium alginate, the cationic polymer thickening agent, the hydroxyethylidene diphosphonic acid, and the fatty alcohol polyoxyethylene ether penetrant JFC are ground and uniformly mixed, to obtain the printing paste.

[0032] 5wt% of the printing paste is added to water, stirred and mixed uniformly after adjusting to 100% weight, and the printing paste is obtained when the system is completely dissolved and the color is uniform; 55wt% of the printing paste, 1.5wt% of weak alkali (sodium bicarbonate), 0.5wt% of resist salt S, 2.5wt% of reactive dye (reactive turquoise blue dye), and 6wt% of urea are added to water, stirred and mixed uniformly after adjusting to 100% weight, and the printing color paste is obtained; the printing color paste is printed on the polyester fabric, and the specific process is as follows: printing color paste (5mm / s, 3V)→drying (110℃, 4min)→steaming (102℃, 10min)→cold water washing→alkali water washing (50℃, 5min)→alkali water washing (100℃, 3min)→hot water washing (80℃)→cold water washing→neutralization→drying.

[0033] Example 2

[0034] The embodiment provides a wax-imitating printing paste for polyester fabric, and components and weight parts of the wax-imitating printing paste include 50 parts of anionic sodium alginate, 30 parts of cationic polymer thickening agent, 5 parts of hydroxyethylidene diphosphonic acid, and 13 parts of alkylphenol polyoxyethylene ether penetrant JFC.

[0035] The anionic sodium alginate is prepared by the following method: sodium alginate is added to water and dissolved completely, sodium hydroxide with a weight of 20wt% of the sodium alginate is added to make the solution alkaline, the water bath is heated to 50℃, and then 2-chloroethyl sodium sulfonate solution with a weight of 10wt% of the sodium alginate is added dropwise, stirring is performed for 3h, dilute hydrochloric acid is added to make the solution neutral, ethanol is added to precipitate the product, filtration is performed, ethanol washing is performed, and drying is performed, so that the anionic sodium alginate is obtained.

[0036] The cationic polymer thickening agent is prepared by the following method: polyethylene glycol diallyl ether is added to toluene and dissolved completely, chloroplatinic acid with a weight of 0.02wt% of the polyethylene glycol diallyl ether is added, heating is performed to 110℃, hydrogen-containing silicone oil with a weight of 1.5 times of the polyethylene glycol diallyl ether is added dropwise, stirring is performed for 8h, methanol washing is performed for three times, and reduced pressure distillation is performed, so that a hydrophilic silicone monomer is obtained; (3-acrylamidopropyl) trimethylammonium chloride, methyl acrylamide, ethyl acrylate, and the hydrophilic silicone monomer are added to water in a mass ratio of 1:5:1:6, benzyloyl peroxide with a weight of 10wt% of the trimethylammonium chloride is added after heating to 90℃, stirring is performed for 5h, reduced pressure distillation is performed, ethyl ether is added to precipitate the product, filtration is performed, ethanol washing is performed, and drying is performed, so that the cationic polymer thickening agent is obtained.

[0037] The embodiment also provides a printing method of the wax-imitating printing paste for printing polyester, comprising the following steps: grinding and uniformly mixing anionic sodium alginate, cationic polymer thickening agent, hydroxyethylidene diphosphonic acid and alkylphenol polyoxyethylene ether penetrant JFC-1 to obtain the printing paste;

[0038] 5wt% of the printing paste is added into water, and stirred and uniformly mixed after being adjusted to 100wt%, to obtain printing paste; 55wt% of the printing paste, 1.5wt% of weak base (sodium bicarbonate), 0.5wt% of resist salt S, 2.5wt% of reactive dye (reactive turquoise blue dye) and 6wt% of urea are added into water, and stirred and uniformly mixed after being adjusted to 100wt%, to obtain printing color paste; the printing color paste is used for printing on polyester fabric, and the specific process is as follows: printing color paste (5mm / s, 3V)→drying (110℃, 4min)→steaming (102℃, 10min)→cold water washing→alkali water washing (50℃, 5min)→alkali water washing (100℃, 3min)→hot water washing (80℃)→cold water washing→neutralization→drying.

[0039] Embodiment 3

[0040] The embodiment provides a wax-imitating printing paste for printing polyester, and components and weight parts of the wax-imitating printing paste comprise: 70 parts of anionic sodium alginate, 10 parts of cationic polymer thickening agent, 10 parts of hydroxyethylidene diphosphonic acid and 1 part of fatty alcohol polyoxyethylene ether penetrant JFC;

[0041] The anionic sodium alginate is prepared by the following method: sodium alginate is added into water and dissolved completely, 20wt% of sodium hydroxide based on the weight of the sodium alginate is added to make the solution alkaline, the water bath is heated to 50℃, 10wt% of 3-chloro-2-hydroxypropyl sulfonic acid sodium solution based on the weight of the sodium alginate is added dropwise, stirring is performed for 3h, dilute hydrochloric acid is added to make the solution neutral, ethanol is added to precipitate the product, filtration is performed, ethanol washing is performed, and drying is performed, to obtain the anionic sodium alginate;

[0042] The cationic polymer thickening agent is prepared by the following method: polyethylene glycol diallyl ether is completely dissolved in toluene, 0.02wt% of chloroplatinic acid of polyethylene glycol diallyl ether is added, the temperature is raised to 110°C, then 1.5 times of polyethylene glycol diallyl ether weight of hydrogen-containing silicone oil is added dropwise, after stirring for 8h, methanol is washed for three times, and then reduced pressure distillation is performed, to obtain the hydrophilic silicone monomer; acryloyloxyethyl trimethyl ammonium chloride, acrylamide, ethyl acrylate and the hydrophilic silicone monomer are added into water according to the mass ratio of 1:6:1:5, the temperature is raised to 80°C, then 10wt% of benzoyl peroxide of acryloyloxyethyl trimethyl ammonium chloride is added, after stirring for 6h, reduced pressure distillation is performed, ethyl ether is added to precipitate the product, filtration is performed, ethanol washing and drying are performed, to obtain the cationic polymer thickening agent.

[0043] The embodiment simultaneously proposes a method for printing the above-mentioned wax-imitating printing paste for polyester, comprising: grinding and uniformly mixing anionic sodium alginate, cationic polymer thickening agent, hydroxy ethylidene diphosphonic acid and fatty alcohol polyoxyethylene ether penetrant JFC, to obtain the printing paste.

[0044] 5wt% of the printing paste is added into water, and after adjusting to 100wt%, stirring and uniformly mixing are performed, until complete dissolution and uniform color of the system, to obtain printing paste; 55wt% of the printing paste, 1.5wt% of weak alkali (sodium bicarbonate), 0.5wt% of resist salt S, 2.5wt% of reactive dye (reactive turquoise blue dye) and 6wt% of urea are added into water, and after adjusting to 100wt%, stirring and uniformly mixing are performed, to obtain printing color paste; the printing color paste is printed on the polyester fabric, and the specific process is as follows: printing color paste (5mm / s, 3V)→drying (110°C, 4min)→steaming (102°C, 10min)→cold water washing→alkali water washing (50°C, 5min)→alkali water washing (100°C, 3min)→hot water washing (80°C)→cold water washing→neutralization→drying.

[0045] Comparative Example 1

[0046] The comparative example proposes a wax-imitating printing paste for polyester, and components and weight parts of the wax-imitating printing paste comprise: 80 parts of sodium alginate, 7 parts of hydroxy ethylidene diphosphonic acid and 2 parts of fatty alcohol polyoxyethylene ether penetrant JFC.

[0047] The comparative example simultaneously proposes a method for printing the above-mentioned wax-imitating printing paste for polyester, comprising: grinding and uniformly mixing sodium alginate, hydroxy ethylidene diphosphonic acid and fatty alcohol polyoxyethylene ether penetrant JFC, to obtain the printing paste.

[0048] 5wt% of the printing paste is added to water, stirred and mixed uniformly after adjusting to 100% by weight, until completely dissolved and the system color is uniform, to obtain a printing paste; 55wt% of the printing paste, 1.5wt% of weak alkali (sodium bicarbonate), 0.5wt% of resist salt S, 2.5wt% of reactive dye (reactive turquoise blue dye), and 6wt% of urea are added to water, stirred and mixed uniformly after adjusting to 100% by weight, to obtain a printing color paste; the printing color paste is printed on a polyester fabric, and the specific process is as follows: printing color paste (5mm / s, 3V)→drying (110℃, 4min)→steaming (102℃, 10min)→cold water washing→alkali water washing (50℃, 5min)→alkali water washing (100℃, 3min)→hot water washing (80℃)→cold water washing→neutralization→drying.

[0049] Comparative Example 2

[0050] The present comparative example proposes a wax-like printing paste for polyester, and the components and weight parts thereof include: 60 parts of sodium alginate, 20 parts of cationic polymer thickening agent, 7 parts of hydroxyethylidene diphosphonic acid, and 2 parts of fatty alcohol polyoxyethylene ether penetrant JFC;

[0051] The cationic polymer thickening agent is prepared by the following method: polyethylene glycol diallyl ether is completely dissolved in toluene, 0.02wt% of chloroplatinic acid based on the weight of polyethylene glycol diallyl ether is added, the temperature is raised to 110℃, then 1.5 times the weight of hydrogen-containing silicone oil based on the weight of polyethylene glycol diallyl ether is added dropwise, stirring for 8h, then washing with methanol for three times, and then reduced pressure distillation to obtain the hydrophilic silicone monomer; acryloyloxyethyl trimethyl ammonium chloride, acrylamide, ethyl acrylate, and the hydrophilic silicone monomer are added to water in a mass ratio of 1:5:2:6, the temperature is raised to 80℃, then 10wt% of benzoyl peroxide based on the weight of acryloyloxyethyl trimethyl ammonium chloride is added, stirring for 6h, then reduced pressure distillation, adding diethyl ether to precipitate the product, filtering, washing with ethanol, and drying to obtain the cationic polymer thickening agent.

[0052] The present comparative example also proposes a method for printing using the above-mentioned wax-like printing paste for polyester, which comprises: grinding and uniformly mixing sodium alginate, cationic polymer thickening agent, hydroxyethylidene diphosphonic acid, and fatty alcohol polyoxyethylene ether penetrant JFC to obtain the printing paste;

[0053] The printing paste is prepared by adding 5wt% of the printing paste into water, stirring and mixing until uniform, and then adjusting to 100wt% after complete dissolution and uniform color of the system. The printing color paste is prepared by adding 55wt% of the printing paste, 1.5wt% of weak alkali (sodium bicarbonate), 0.5wt% of resist salt S, 2.5wt% of reactive dye (reactive turquoise blue dye), and 6wt% of urea into water, stirring and mixing until uniform. The printing color paste is printed on the polyester fabric, and the specific process is as follows: printing color paste (5mm / s, 3V)→drying (110℃, 4min)→steaming (102℃, 10min)→cold water washing→alkali water washing (50℃, 5min)→alkali water washing (100℃, 3min)→hot water washing (80℃)→cold water washing→neutralization→drying.

[0054] Performance test:

[0055] PVID: The apparent viscosity of the printing paste at 60r / min and 6r / min is measured at 25℃ by using a Brookfield DVII viscometer, and PVID = η 60 / η6;

[0056] Water retention: The printing paste with a concentration of 1wt% is prepared, a qualitative filter paper with a width of 1cm is vertically immersed into the paste for 1cm, and the height of the paper after 30min is measured. The height less than 0.5cm is good, the height greater than 0.5cm and less than 1cm is better, and the height greater than 1cm is poor.

[0057] De-paste rate: After printing, the mass difference between the mass of the fabric after drying and the mass of the fabric after washing is divided by the mass difference between the mass of the fabric after drying and the mass of the fabric without printing, and then multiplied by 100% to obtain the de-paste rate. In the formula, W1 is the mass of the fabric after printing and drying, W2 is the mass of the fabric after washing, and W0 is the mass of the fabric without printing.

[0058] Color yield: The K / S value of the fabric after printing is measured by using an Easychromel electronic colorimeter. The larger the K / S value, the deeper the color.

[0059] Hand feeling: The smoothness, softness, and elasticity of the printed fabric are evaluated by using the methods of pinching, touching, and grabbing. If the fabric is soft, smooth, and elastic, the hand feeling is good. If the fabric is not smooth and feels hard and lacks elasticity, the hand feeling is poor.

[0060] Color light brightness: The color light brightness is evaluated by visual observation. If the printed pattern of the fabric is uniformly colored and the color is bright, the color light brightness is good. If the color is dark or pale, the color light brightness is poor.

[0061] Contour fineness: the most fine line in the pattern is clearly visible, the contour is clear, the thickness is uniform, and the printing effect is good; if the contour of the fine line in the pattern is somewhat blurred, and the medium-thick line is clearly visible, the printing effect is better; if the medium-thick line in the printed pattern is blurred, and the thick line contour is clear, the printing effect is general; the thick line is blurred, and the printing effect is poor;

[0062] Rubbing fastness: refer to GB / T 3920-2008 "Textile color fastness test rubbing fastness" for rating.

[0063] The test results of the printing paste obtained in the above examples and comparative examples are shown in Table 1 as follows:

[0064] Table 1 Test results of the printing paste obtained in the examples and comparative examples

[0065] Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 PVID value 0.53 0.60 0.58 0.79 0.75 Water retention Good Good Good Fair Poor Doffing rate (%) 96.6 95.7 95.9 83.8 76.9 Hand feeling Good Good Good Poor Poor Color yield (K / S) 26.9 26.1 26.3 21.7 21.4 Contour fineness Good Good Good Fair Fair Color lightness Good Good Good Poor Poor Rubbing fastness 5 5 5 3-4 3-4

[0066] From the above Table 1, it can be seen that the printing paste according to the present application has the characteristics of high paste forming rate, good water holding property, high color yield, bright and vivid color, clear pattern contour, good paste removal effect, and good hand feeling, and the comprehensive performance is better than that of the printing paste prepared by using sodium alginate or sodium alginate compounded with cationic polymer thickener alone.

[0067] The above description is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art, according to the technical solution and the invention of the present application, can make equivalent replacement or change within the technical scope of the present application, which should be covered in the protection scope of the present application.

Claims

1. A wax-like printing paste for polyester, characterized in that, Its components and parts by weight include: 50-70 parts of anionized sodium alginate, 10-30 parts of cationic polymer thickener, 5-10 parts of polyhydroxy crosslinking agent, and 1-3 parts of penetrant; The anionized sodium alginate is obtained by etherifying sodium alginate with an anionizing etherifying agent; the cationic polymer thickener is obtained by copolymerizing cationic monomers, nonionic monomers and hydrophilic organosilicon monomers. The anionic etherifying agent is selected from at least one of sodium chloroacetate, sodium 2-chloroethylsulfonate, or sodium 3-chloro-2-hydroxypropylsulfonate; the cationic monomer is selected from at least one of diallyl dimethylammonium chloride or acryloyloxyethyltrimethylammonium chloride; and the nonionic monomer is selected from at least one of acrylamide or methacrylamide.

2. The polyester imitation wax printing paste according to claim 1, characterized in that, The weight ratio of sodium alginate to anionic etherifying agent is 1:0.1-0.

3.

3. The polyester imitation wax printing paste according to claim 2, characterized in that, The etherification reaction is carried out under alkaline conditions at a temperature of 30-50°C for 1-5 hours.

4. The polyester imitation wax printing paste according to any one of claims 3, characterized in that, The structural formula of the anionized sodium alginate is shown below: , Where R1, R2, R3 or R4 are independently hydrogen or groups containing carboxylate or sulfonate salts, and m and n are integers greater than 0.

5. The polyester imitation wax printing paste according to any one of claims 4, characterized in that, The cationic monomer is at least one of diallyl dimethyl ammonium chloride, acryloyloxyethyl trimethyl ammonium chloride, or (3-acrylamidopropyl)trimethyl ammonium chloride; the nonionic monomer is at least one of acrylamide, methacrylamide, N-vinylmethylacetamide, ethyl acrylate, butyl acrylate, or n-octyl acrylate; the hydrophilic organosilicon monomer is obtained by hydrosilylation reaction of hydrogen-containing silicone oil with polyethylene glycol diallyl ether. The mass ratio of the cationic monomer, the nonionic monomer, and the hydrophilic organosilicon monomer is 1: 5-10: 5-10.

6. The polyester imitation wax printing paste according to any one of claims 5, characterized in that, The polyhydroxy crosslinking agent is at least one of hydroxyethylidene diphosphonic acid, polyethylene glycol, or polyethylene glycol methyl ether.

7. The polyester imitation wax printing paste according to any one of claims 6, characterized in that, The penetrant is at least one of the following: fatty alcohol polyoxyethylene ether penetrant JFC, alkylphenol polyoxyethylene ether penetrant JFC-1, fatty alcohol and ethylene oxide condensate penetrant JFC-2, or polyoxyethylene ether compound penetrant JFC-S.

8. A method for preparing a polyester imitation wax printing paste according to any one of claims 1-7, characterized in that, include: After the anionized sodium alginate, cationic polymer thickener, polyhydroxy crosslinking agent and penetrant are mixed evenly, the imitation wax printing paste for polyester is obtained.

9. The application of the polyester wax-like printing paste according to any one of claims 1-7 in polyester wax-like printing, characterized in that, include: The printing paste is added to water and mixed evenly to obtain a printing paste; the printing paste, a weak alkali, an anti-dyeing salt, and a reactive dye are added to water and mixed evenly to obtain a printing color paste; The printing paste is then printed onto a polyester fabric.

10. The application of the polyester wax-like printing paste according to claim 9 in polyester wax-like printing, characterized in that, The weak base is at least one of sodium citrate, disodium citrate, trisodium citrate, sodium bicarbonate, or sodium carbonate; the anti-dyeing salt is anti-dyeing salt S or anti-dyeing salt K; the reactive dye is at least one of monochlorotriazine reactive dye, vinyl sulfone type reactive dye, or monochlorotriazine and vinyl sulfone type dual reactive dye.

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