Styrene-acrylic resin for spinning and preparation method thereof

Abstract

The invention discloses styrene-acrylic resin for spinning and a preparation method thereof, and relates to the field of styrene-acrylic resin. The propyl benzene resin for spinning is prepared from the following raw materials in parts by weight: 22 to 28 parts of styrene monomer; 48 to 55 parts of an acrylate monomer; 11 to 17 parts of dodecyl methacrylate; 4 to 8 parts of beta-cyclodextrin; 0.8 to 1.3 parts of a cross-linking agent monomer; 5-10 parts of a maleic anhydride grafted polylactic acid monomer; 3-6 parts of an emulsifier; 0.2 to 0.5 part of an initiator; 24 to 35 parts of water; the maleic anhydride grafted polylactic acid monomer is obtained by performing prepolymerization and catalytic melt polymerization on maleic anhydride and lactic acid. The styrene-acrylic resin prepared in the invention can improve the stiffness of a fabric after dip finishing of the fabric, does not affect the softness and whiteness of the fabric, does not cause yellowing of the fabric, and has good durability and washing resistance of an emulsion.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of styrene-acrylic resin, in particular to a styrene-acrylic resin for textile and a preparation method thereof. BACKGROUND

[0002] Styrene-acrylic resin is a polymer copolymerized by styrene, acrylic acid and its esters, which has the advantages of UV resistance, corrosion resistance, good transparency and mechanical properties, low cost, etc., and is widely used in fields such as construction, papermaking, aviation and textile.

[0003] In the field of textile, styrene-acrylic resin can be used as fabric finishing agent, printing and dyeing aid, and printing adhesive. When used as fabric finishing agent, styrene-acrylic resin can improve the appearance and touch of fabric, making the fabric more stiff and wrinkle-resistant.

[0004] When used as fabric finishing agent, styrene-acrylic resin is usually in the form of styrene-acrylic resin emulsion for impregnation of fabric. However, the existing styrene-acrylic resin emulsion has the problems of affecting the softness of fabric, poor durability of emulsion coating and possibly causing yellowing of fabric after finishing of fabric, which affects the application of styrene-acrylic resin in the field of textile.

[0005] Therefore, the present application provides a styrene-acrylic resin for textile, which can improve the stiffness of fabric after impregnation and finishing of fabric, without affecting the softness and whiteness of fabric, without causing yellowing of fabric, and with good durability and washability of emulsion. SUMMARY

[0006] In order to solve the above problems, the present application provides a styrene-acrylic resin for textile and a preparation method thereof.

[0007] The styrene-acrylic resin for textile and the preparation method thereof provided by the present application adopt the following technical scheme: In a first aspect, the present application provides a styrene-acrylic resin for textile, which comprises the following raw materials by weight: styrene monomer 22-28 parts; acrylate monomer 48-55 parts; dodecyl methacrylate 11-17 parts; beta-cyclodextrin 4-8 parts; crosslinker monomer 0.8-1.3 parts; maleic anhydride grafted polylactic acid monomer 5-10 parts; emulsifier 3-6 parts; initiator 0.2-0.5 parts; water 24-35 parts; The maleic anhydride grafted polylactic acid monomer is obtained by pre-polymerization and catalytic melt polymerization of maleic anhydride and lactic acid.

[0008] By adopting the above technical solution, dodecyl methacrylate is added as a polymerization monomer to the styrene-acrylic resin emulsion of this application. The resulting polyacrylate system introduces hydrophobic long side chains into the side chains, which increases the flexibility of the side chains and helps to maintain the softness of the fabric during stiffening. Maleic anhydride-grafted polylactic acid monomer introduces double bonds into the lactic acid monomer, which can copolymerize with the acrylate monomer. The polylactic acid monomer has good biocompatibility and degradability, which makes the resulting styrene-acrylic resin emulsion more compatible with fabrics of various fiber materials, and at the same time improves the hand feel of the treated fabric. β-cyclodextrin plays a solubilizing role in the system, and at the same time increases the polymerization rate of hydrophobic monomers and acrylate monomers in the aqueous phase through phase transfer.

[0009] This application generates a styrene-acrylic resin emulsion by polymerizing raw materials in an aqueous phase. A coating film is formed on the fabric by promoting the crosslinking agent, which improves the stiffness of the fabric without affecting its softness. At the same time, the emulsion has good compatibility with the fabric fibers and crosslinking reaction, which improves the washability. Meanwhile, the emulsion has little impact on the whiteness of the fabric.

[0010] Optionally, the maleic anhydride-grafted polylactic acid monomer is prepared by the following steps: Lactic acid and maleic anhydride are mixed, stirred and heated to 130-150℃, dehydrated under normal pressure for 2-3 hours, and then prepolymerized under vacuum for 8-10 hours to obtain the prepolymer. Add the catalyst to the prepolymer, evacuate and heat to 160-180℃, polymerize for 4-6 hours. After polymerization, release the vacuum, dissolve in methanol, precipitate with deionized water, wash, filter and dry the filter residue to obtain maleic anhydride-grafted polylactic acid monomer.

[0011] By employing the above technical solution, maleic anhydride and lactic acid are polymerized in two steps. By controlling the reaction towards ring-opening and esterification polycondensation, double bonds are introduced into the polylactic acid monomer, facilitating subsequent polymerization with acrylate monomers. This successfully introduces lactic acid monomers into the styrene-acrylic resin emulsion, resulting in good biocompatibility. Maleic anhydride-grafted polylactic acid monomers, through surface treatment, reduce the hydrophilic groups of the lactic acid monomers. After polymerization with acrylate monomers, the emulsion retains strong hydrophobicity, allowing for hydrophobic treatment of fabrics after film formation.

[0012] Optionally, the molar ratio of lactic acid to maleic anhydride is (7-20):1, the weight of the catalyst is 1%-2.2% of the weight of the prepolymer, and the catalyst is selected from zinc chloride, zinc oxide, and stannous oxide.

[0013] Optionally, the acrylate monomer is a mixture of a first monomer and a second monomer in a weight ratio of (22-25):(26-30), wherein the first monomer is one or more of butyl acrylate and acrylic acid, and the second monomer is one or more of methyl methacrylate and isooctyl methacrylate.

[0014] By adopting the above technical solution, and by controlling the ratio of hard monomers to soft monomers to be approximately 1.4:1, the hard monomers control the strength of the coating film on the surface of the finished fabric, while the soft monomers control the flexibility of the coating film, thereby improving the stiffness of the fabric without affecting its softness and hand feel.

[0015] Optionally, the crosslinking agent is selected from one or more of diacetone acrylamide and methylene bisacrylamide.

[0016] By adopting the above technical solution, a small amount of crosslinking agent can promote the crosslinking strength of styrene-acrylic resin emulsion, and at the same time, the hydroxyl groups of the coating film and fabric fibers can undergo crosslinking, thereby improving stiffness and breaking strength, making the fabric more resistant to washing.

[0017] Optionally, the emulsifier may be selected from two or more of fatty alcohol polyoxyethylene ether, castor oil polyoxyethylene ether, fatty alcohol sulfate monoethanolamine salt, and sodium dodecyl sulfate.

[0018] Optionally, the emulsifier is a mixture of fatty alcohol polyoxyethylene ether and sodium dodecyl sulfate in a weight ratio of (1.4-1.8):1.

[0019] By adopting the above technical solution, the choice of emulsifier determines the stability of styrene-acrylic resin emulsion. Using a specific proportion of emulsifier results in less coagulation and more uniform emulsion particles, thus leading to better film-forming performance.

[0020] Optionally, the initiator is selected from one or a mixture of potassium persulfate, sodium persulfate, and ammonium persulfate in any proportion.

[0021] Secondly, this application provides a method for preparing styrene-acrylic resin for textiles, comprising the following steps: At room temperature, water, emulsifier, styrene monomer, acrylate monomer, dodecyl methacrylate, and maleic anhydride-grafted polylactic acid monomer are added to a flask and pre-emulsified by high-speed stirring for 30-50 minutes to obtain a pre-emulsion. The pre-emulsion is divided into two parts. One-quarter of the pre-emulsion is mixed with β-cyclodextrin and heated in a water bath to 70-75°C. An initiator is slowly added dropwise to initiate the reaction. Then, the remaining pre-emulsion and crosslinking agent monomer are added dropwise over a period of 1.5-2 hours. The water bath temperature is raised to 80-85°C and the reaction is maintained for 30-40 minutes. The mixture is then cooled, and the pH is adjusted to neutral with ammonia. The mixture is then filtered to obtain styrene-acrylic resin for textiles.

[0022] By adopting the above technical solution, styrene-acrylic resin emulsion is prepared through a semi-continuous seed emulsion polymerization method. The production method is simple, environmentally friendly, and low in cost.

[0023] In summary, this application has the following beneficial effects: 1. In the styrene-acrylic resin emulsion of this application, dodecyl methacrylate is added as a polymerization monomer, thereby introducing hydrophobic long side chains into the resulting polyacrylate system, which increases the flexibility of the side chains and is beneficial to maintaining the softness of the fabric during stiffening finishing; maleic anhydride-grafted polylactic acid monomer introduces double bonds into the lactic acid monomer, which can copolymerize with the acrylate monomer. The polylactic acid monomer has good biocompatibility and degradability, thereby enabling the generated styrene-acrylic resin emulsion to be more compatible with fabrics of various fiber materials and to be more environmentally friendly; β-cyclodextrin plays a solubilizing role in the system, and at the same time, it improves the polymerization rate of the hydrophobic monomer and the acrylate monomer in the aqueous phase through phase transfer.

[0024] 2. This application generates a styrene-acrylic resin emulsion by polymerizing raw materials in an aqueous phase, and forms a coating film on the fabric by promoting the crosslinking agent. The stiffness of the fabric is improved without affecting the softness. At the same time, the good compatibility and crosslinking reaction with the fabric fibers improves the washability, and the emulsion has little impact on the whiteness of the fabric. Detailed Implementation

[0025] The present application will be further described in detail below with reference to Examples 1-5 and Comparative Examples 1-2.

[0026] The sources of raw materials in the following examples and comparative examples are: Dodecyl methacrylate, purchased from Wuhan Haorong Biotechnology Co., Ltd., brand name Haorong; β-Cyclodextrin, purchased from Shenzhen Jinfuyuan Biotechnology Co., Ltd.; Fatty alcohol polyoxyethylene ether, purchased from Guangdong Huayu Fine Chemical Co., Ltd., brand name AEO-9; Castor oil polyoxyethylene ether, purchased from Hubei Xinrunde Chemical Co., Ltd., brand name EL-60; The fatty alcohol sulfate monoethanolamine salt was purchased from Zhejiang Chuanhua Huayang Chemical Co., Ltd. Sodium dodecyl sulfate, purchased from Shanghai Hengfei Biotechnology Co., Ltd., Aladdin brand.

[0027] Preparation Example Preparation Example 1 Maleic anhydride grafted with polylactic acid monomer is prepared by the following steps: Lactic acid and maleic anhydride in a molar ratio of 7:1 were mixed, stirred and heated to 130°C, dehydrated under normal pressure for 2 hours, and then prepolymerized under vacuum for 8 hours to obtain the prepolymer. Zinc chloride catalyst was added to the prepolymer, with the catalyst weight being 1% of the prepolymer weight. Vacuum was applied and the temperature was raised to 160°C. Polymerization was carried out for 4 hours. After polymerization, the vacuum was released, and the prepolymer was dissolved in methanol, precipitated and washed with deionized water. After filtration, the filter residue was placed in a vacuum drying oven to dry, thus obtaining maleic anhydride-grafted polylactic acid monomer.

[0028] Preparation Example 2 Maleic anhydride grafted with polylactic acid monomer is prepared by the following steps: Lactic acid and maleic anhydride were mixed in a molar ratio of 20:1, stirred and heated to 150°C, dehydrated under normal pressure for 3 hours, and then prepolymerized under vacuum for 10 hours to obtain the prepolymer. Zinc oxide catalyst was added to the prepolymer, with the catalyst weight being 2.2% of the prepolymer weight. Vacuum was drawn and the temperature was raised to 180°C. Polymerization was carried out for 6 hours. After polymerization, the vacuum was released, and the prepolymer was dissolved in methanol, precipitated and washed with deionized water. After filtration, the filter residue was placed in a vacuum drying oven to dry, thus obtaining maleic anhydride-grafted polylactic acid monomer.

[0029] Preparation Example 3 Maleic anhydride grafted with polylactic acid monomer is prepared by the following steps: Lactic acid and maleic anhydride in a molar ratio of 14:1 were mixed, stirred and heated to 140°C, dehydrated under normal pressure for 2.5 h, and then prepolymerized under vacuum for 9 h to obtain the prepolymer. Zinc chloride catalyst was added to the prepolymer, with the catalyst weight being 1.7% of the prepolymer weight. Vacuum was drawn and the temperature was raised to 170°C. Polymerization was carried out for 5 hours. After polymerization, the vacuum was released, and the prepolymer was dissolved in methanol, precipitated and washed with deionized water. After filtration, the filter residue was placed in a vacuum drying oven to dry, thus obtaining maleic anhydride-grafted polylactic acid monomer. Example

[0030] Example 1 A styrene-acrylic resin for textiles comprises the following raw materials in parts by weight: 22 parts of styrene monomer; 48 parts of acrylate monomers, specifically including 22 parts of butyl acrylate and 26 parts of methyl methacrylate; 11 parts of dodecyl methacrylate; 4 parts of β-cyclodextrin; 0.8 parts of crosslinking agent monomer, specifically methylenebisacrylamide; Five parts of maleic anhydride-grafted polylactic acid monomer were selected, specifically the maleic anhydride-grafted polylactic acid monomer prepared in Preparation Example 1. Three parts emulsifier, specifically two parts fatty alcohol polyoxyethylene ether and one part castor oil polyoxyethylene ether; 0.2 parts of initiator, specifically potassium persulfate; 24 parts water.

[0031] Textile styrene-acrylic resin is prepared through the following steps: Water, emulsifier, styrene monomer, acrylate monomer, dodecyl methacrylate and maleic anhydride-grafted polylactic acid monomer were added to a four-necked flask at room temperature and pre-emulsified by high-speed stirring for 30 min to obtain a pre-emulsion. The pre-emulsion was divided into two parts. Three-quarters of the pre-emulsion was transferred to a dropping funnel, while the remaining one-quarter was kept in a four-necked flask and mixed with β-cyclodextrin. The four-necked flask was heated in a water bath to 70°C, and an initiator was slowly added to initiate the reaction. At the same time, the remaining pre-emulsion and crosslinking agent monomer were added dropwise to the four-necked flask over a period of 1.5 hours. The temperature was then raised to 80°C and maintained for 30 minutes. After cooling, ammonia was added to adjust the pH of the emulsion to neutral. The emulsion was then filtered to obtain styrene-acrylic resin for textiles.

[0032] Example 2 A styrene-acrylic resin for textiles comprises the following raw materials in parts by weight: 28 parts of styrene monomer; 55 parts of acrylate monomers, specifically including 25 parts of butyl acrylate and 30 parts of isooctyl methacrylate; 17 parts of dodecyl methacrylate; 8 parts of β-cyclodextrin; 1.3 parts of crosslinking agent monomer, specifically diacetone acrylamide; Ten parts of maleic anhydride-grafted polylactic acid monomer were selected, specifically the maleic anhydride-grafted polylactic acid monomer prepared in Preparation Example 2. Six parts of emulsifier, specifically four parts of fatty alcohol polyoxyethylene ether and two parts of fatty alcohol sulfate monoethanolamine salt; 0.5 parts of initiator, specifically sodium persulfate; 35 parts water.

[0033] Textile styrene-acrylic resin is prepared through the following steps: Water, emulsifier, styrene monomer, acrylate monomer, dodecyl methacrylate and maleic anhydride-grafted polylactic acid monomer were added to a four-necked flask at room temperature and pre-emulsified by high-speed stirring for 50 min to obtain a pre-emulsion. The pre-emulsion was divided into two parts. Three-quarters of the pre-emulsion was transferred to a dropping funnel, while the remaining one-quarter was kept in a four-necked flask and mixed with β-cyclodextrin. The four-necked flask was heated in a water bath to 75°C, and an initiator was slowly added to initiate the reaction. At the same time, the remaining pre-emulsion and crosslinking agent monomer were added dropwise to the four-necked flask over a period of 2 hours. The temperature was then raised to 85°C and maintained for 40 minutes. After cooling, ammonia was added to adjust the pH of the emulsion to neutral. The mixture was then filtered to obtain styrene-acrylic resin for textiles.

[0034] Example 3 A styrene-acrylic resin for textiles comprises the following raw materials in parts by weight: 25 parts of styrene monomer; 51 parts of acrylate monomers, specifically including 24 parts of butyl acrylate and 27 parts of methyl methacrylate; 14 parts of dodecyl methacrylate; 6 parts of β-cyclodextrin; 1.1 parts of crosslinking agent monomer, specifically N-hydroxymethylacrylamide; Seven parts of maleic anhydride-grafted polylactic acid monomer were selected, specifically the maleic anhydride-grafted polylactic acid monomer prepared in Preparation Example 3. Five parts emulsifier, specifically three parts castor oil polyoxyethylene ether and two parts fatty alcohol sulfate monoethanolamine salt; 0.3 parts initiator, specifically ammonium persulfate; 29 portions of water.

[0035] Textile styrene-acrylic resin is prepared through the following steps: Water, emulsifier, styrene monomer, acrylate monomer, dodecyl methacrylate and maleic anhydride-grafted polylactic acid monomer were added to a four-necked flask at room temperature and pre-emulsified by high-speed stirring for 40 min to obtain a pre-emulsion. The pre-emulsion was divided into two parts. Three-quarters of the pre-emulsion was transferred to a dropping funnel, while the remaining one-quarter was kept in a four-necked flask and mixed with β-cyclodextrin. The four-necked flask was heated in a water bath to 72°C, and an initiator was slowly added to initiate the reaction. At the same time, the remaining pre-emulsion and crosslinking agent monomer were added dropwise to the four-necked flask over a period of 1.5 hours. The temperature was then raised to 82°C and maintained for 35 minutes. After cooling, ammonia was added to adjust the pH of the emulsion to neutral. The emulsion was then filtered to obtain styrene-acrylic resin for textiles.

[0036] Example 4 The difference between this embodiment and Embodiment 1 is that the emulsifier in the styrene-acrylic resin raw material for textiles is different.

[0037] In this embodiment, the emulsifier in the styrene-acrylic resin for textiles is a mixture of fatty alcohol polyoxyethylene ether and sodium dodecyl sulfate in a weight ratio of 1.4-1, specifically 1.75 parts fatty alcohol polyoxyethylene ether and 1.25 parts sodium dodecyl sulfate.

[0038] The preparation method of styrene-acrylic resin in this embodiment is the same as that in the previous embodiment.

[0039] Example 5 The difference between this embodiment and Embodiment 1 is that the emulsifier in the styrene-acrylic resin raw material for textiles is different.

[0040] In this embodiment, the emulsifier in the styrene-acrylic resin for textiles is a mixture of fatty alcohol polyoxyethylene ether and sodium dodecyl sulfate in a weight ratio of 1.8-1, specifically 1.92 parts fatty alcohol polyoxyethylene ether and 1.08 parts sodium dodecyl sulfate.

[0041] The preparation method of styrene-acrylic resin in this embodiment is the same as that in the previous embodiment.

[0042] Comparative Example Comparative Example 1 The difference between this comparative example and Example 1 is that the raw materials of the textile styrene-acrylic resin are different.

[0043] In the raw materials of this comparative example of styrene-acrylic resin, butyl acrylate was used in place of dodecyl methacrylate in equal parts by mass, and β-cyclodextrin was not added to the raw materials.

[0044] The preparation method of the styrene-acrylic resin in this comparative example is the same as that in the examples.

[0045] Comparative Example 2 The difference between this comparative example and Example 1 is that the raw materials of the textile styrene-acrylic resin are different.

[0046] In the raw materials of the styrene-acrylic resin in this comparative example, no maleic anhydride-grafted polylactic acid monomer was added.

[0047] The preparation method of the styrene-acrylic resin in this comparative example is the same as that in the examples.

[0048] Performance testing Finishing process for fabrics: The styrene-acrylic resin prepared in the above examples and comparative examples is formulated into a finishing solution with a mass concentration of 200 g / L. The cotton fabric is subjected to two dips and two nips using the finishing solution, with the liquid retention rate controlled at 85%. The fabric is then taken out, pre-dried at 100°C for 3 min, and finally placed at 160°C for 2 min to obtain the finished fabric.

[0049] The following properties were tested on the finished fabric: Stiffness: Refer to GB / T 18318.1-2009 "Textiles - Tests of bending properties - Part 1: Inclined plane method" to test the radial stiffness of the fabric.

[0050] Washability: The test was conducted in accordance with GB / T 8629-2017 "Test Procedures for Household Washing and Drying of Textiles". The stiffness and whiteness of the fabric were remeasured after 5 washes.

[0051] Whiteness: The determination was made in accordance with GB / T 17644-2008 "Test Method for Whiteness and Color of Textile Fibers".

[0052] Hand feel (softness): Touch the finished fabric with eyes closed, and rate it in groups of 5-10 people. The fabric is rated according to different hand feel, and is divided into 5 levels. Level 1 is the worst, indicating that the fabric is stiff and has poor smoothness; Level 5 is the best, indicating that the fabric has good hand feel and good smoothness.

[0053] Table 1 According to the data in Table 1, the styrene-acrylic resin emulsion prepared in this application uses a specific blend of raw materials. Dodecyl methacrylate is added as a polymerization monomer, maleic anhydride-grafted polylactic acid monomer is added as a modifying monomer, and β-cyclodextrin is added to promote the dissolution of hydrophobic monomers in water and the rate of polymerization reaction. The resulting styrene-acrylic emulsion is a white emulsion with a bluish tint, has good stability, and can be stored for a long time.

[0054] The styrene-acrylic resin emulsion of this application, when used for finishing fabrics, allows for good cross-linking and compatibility with various fabric materials through the introduction of lactic acid monomers. Cross-linking agents and various active groups can cross-link with the hydroxyl groups of the fabric fibers, thereby forming a uniform coating on the fabric surface, improving fabric stiffness with minimal impact on whiteness. The good cross-linking strength imparts excellent wash resistance to the coating; it does not wash off after multiple washes, and the fabric retains good bending length and whiteness even after five washes. The introduction of long hydrophobic side chains and maleic anhydride-modified polylactic acid monomers into the acrylate system improves the flexibility of the molecular chains, thus maintaining the fabric's hand feel and softness.

[0055] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this specific embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. A styrene-acrylic resin for textiles, characterized in that: Including the following parts by weight of raw materials: 22-28 parts of styrene monomer; 48-55 parts of acrylate monomer; 11-17 parts of dodecyl methacrylate; 4-8 parts of β-cyclodextrin; Crosslinking agent monomer 0.8-1.3 parts; 5-10 parts of maleic anhydride grafted with polylactic acid monomer; 3-6 parts emulsifier; Initiator 0.2-0.5 parts; 24-35 parts water; The maleic anhydride-grafted polylactic acid monomer is obtained by prepolymerization and catalytic melt polymerization of maleic anhydride and lactic acid.

2. The textile-grade styrene resin according to claim 1, characterized in that: The maleic anhydride-grafted polylactic acid monomer is prepared by the following steps: Lactic acid and maleic anhydride are mixed, stirred and heated to 130-150℃, dehydrated under normal pressure for 2-3 hours, and then prepolymerized under vacuum for 8-10 hours to obtain the prepolymer. Add the catalyst to the prepolymer, evacuate and heat to 160-180℃, polymerize for 4-6 hours. After polymerization, release the vacuum, dissolve in methanol, precipitate with deionized water, wash, filter and dry the filter residue to obtain maleic anhydride-grafted polylactic acid monomer.

3. The textile styrene resin according to claim 2, characterized in that: The molar ratio of lactic acid to maleic anhydride is (7-20):1, the weight of the catalyst is 1%-2.2% of the weight of the prepolymer, and the catalyst is selected from one of zinc chloride, zinc oxide, and stannous oxide.

4. The textile-grade styrene-acrylic resin according to claim 1, characterized in that: The acrylate monomer is selected from a mixture of a first monomer and a second monomer in a weight ratio of (22-25):(26-30). The first monomer is selected from one or more of butyl acrylate and acrylic acid, and the second monomer is selected from one or more of methyl methacrylate and isooctyl methacrylate.

5. The styrene-acrylic resin for textiles according to claim 1, characterized in that: The crosslinking agent is selected from one or more of diacetone acrylamide, methylene bisacrylamide, and N-hydroxymethylacrylamide.

6. The styrene-acrylic resin for textiles according to claim 1, characterized in that: The emulsifier is selected from two or more of fatty alcohol polyoxyethylene ether, castor oil polyoxyethylene ether, fatty alcohol sulfate monoethanolamine salt, and sodium dodecyl sulfate.

7. The textile styrene resin according to claim 1, characterized in that: The emulsifier is a mixture of fatty alcohol polyoxyethylene ether and sodium dodecyl sulfate in a weight ratio of (1.4-1.8):

1.

8. The textile styrene resin according to claim 1, characterized in that: The initiator is selected from one or more of potassium persulfate, sodium persulfate, and ammonium persulfate.

9. A method for preparing a styrene-acrylic resin for textiles according to any one of claims 1-7, characterized in that, Includes the following steps: At room temperature, water, emulsifier, styrene monomer, acrylate monomer, dodecyl methacrylate, and maleic anhydride-grafted polylactic acid monomer are added to a flask and pre-emulsified by high-speed stirring for 30-50 minutes to obtain a pre-emulsion. The pre-emulsion is divided into two parts. One-quarter of the pre-emulsion is mixed with β-cyclodextrin and heated in a water bath to 70-75°C. An initiator is slowly added to initiate the reaction. Then, the remaining pre-emulsion and crosslinking agent monomer are added dropwise over 1.5-2 hours. The water bath temperature is raised to 80-85°C and the reaction is maintained for 30-40 minutes. The mixture is then cooled, and the pH is adjusted to neutral with ammonia. The mixture is then filtered to obtain styrene-acrylic resin for textiles.

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